Yes, the TT25 is compatible with older Alpha models, including the Alpha 100, Alpha 10, Alpha 200/200i, Alpha 300/300i, Astro 430, ans Pro 550+. Ensure both devices have the latest firmware for optimal functionality

What Customizations Are Available on the Garmin TT25?

The Garmin TT25 is one of the most versatile tracking and training collars on the market, offering a wide range of customizable options to fit your specific needs. Whether you're running small game dogs or large hounds, the TT25 can be tailored to match your hunting style, dog size, and terrain. Below is a breakdown of all the customizable features:

Flex Band Options

You can choose from multiple collar band styles based on your dog’s size and hunting conditions:

Zero Length Short Flex Band: Offers the smallest fit possible, reducing the neck size needed to almost nothing. Ideal for small breeds like rabbit beagles, Mountain Feists, Boykins, terriers, and puppies—but still fits large breeds comfortably.

Standard Flex Band: The default band included with the TT25, recommended for most users. It fits a wide range of dog sizes and provides a balanced mix of comfort and durability.

Rugged Flex Band: Built for extreme conditions such as hog, bear, and cat hunting. Offers extra durability for harsh environments where collar damage is more likely.

Battery Pack Options

The TT25 features a modular battery system, allowing you to swap out battery packs to suit your runtime needs:

Standard Battery Pack: Comes with all TT25 and TT25 Mini collars. Offers up to 68 hours of dynamic tracking runtime. Suitable for all dog sizes.

Extended Battery Pack: Sold separately for users needing longer runtime. Provides up to 136 hours of use—ideal for multi-day hunts. Best used on medium to large dogs due to added weight and size.

Strap Customization

You can swap out the collar strap itself to change colors, fit different neck sizes, or match existing gear. Available in a wide variety of colors and materials.

Antenna Options

The TT25's GPS antenna and VHF antenna can also be replaced or upgraded. You can choose between different antenna lengths to improve range or reduce snagging, depending on your terrain and hunting style.

Modular Design

All of these components—flex bands, battery packs, straps, and antennas—are designed to be easily swappable. No special tools are required, making in-field changes quick and convenient.

In Summary

From battery life and band size to antenna type and strap color, the TT25 can be customized to fit everything from a small terrier to a rugged hound. Whether you're hunting rabbits or tracking bears, there's a setup that’s just right for your dogs and your gear.

Yes, the Garmin TT25 collar is waterproof.

It is rated IPX7, which means it can withstand accidental submersion in water up to 1 meter (about 3.3 feet) for up to 30 minutes. This makes it safe for use in rain, wet brush, creeks, swamps, and other environments where your dog may get soaked.

Key Waterproofing Notes:

• It's built for rugged outdoor use, including wet and muddy conditions.
• It will continue to track and function even if your dog swims with it or gets caught in a downpour.
• While it is waterproof, Garmin does not recommend extended underwater use like diving or deep submersion beyond the IPX7 rating.
  
  

What Is Dynamic Update Rate?

Dynamic Update Rate is a smart feature on the Garmin TT25 that automatically adjusts how often the collar updates your dog’s location based on their movement.

• When your dog is sitting still, the collar slows down location updates to save battery.
  
• When your dog starts moving, it speeds up the updates to give you real-time tracking.

This helps extend battery life without sacrificing accuracy when your dog is active.

How to Set It Up

On your Garmin handheld (like the Alpha 300, Alpha 200i, or Alpha 100):

1. Go to your Dog List.

2. Select your TT25 collar.

3. Open “Tracking Settings” or “Update Rate.”

4. Choose the option labeled “Dynamic.”

5. Confirm and save.

Note: Wording may vary slightly depending on your handheld model.

When to Use It

Use Dynamic Update Rate when:

You want longer battery life without constant updates.

You’re on a long hunt or multi-day trip.

Your dogs stop and rest often.

You don’t want to manually change the update rate during the day.

It’s ideal for most hunters and dog handlers unless you need updates every few seconds for high-speed tracking.

How to Check the Firmware on a Garmin TT25 Collar

You can check the firmware version of your Garmin TT25 collar in two ways: through your Garmin handheld or by using Garmin Express on your computer.

Method 1: Check Firmware on a Garmin Handheld

Turn on your handheld and TT25 collar.
Make sure the collar is connected and communicating with your handheld (Alpha 300, Alpha 200i, Alpha 100, etc.).

Go to the Dog List.
From the main menu, select “Dog List” or “Dogs”.


Select your TT25 collar.
Tap on the name of the collar you want to check.


Scroll to “About” or “Information.”
This screen will show the collar’s details, including the firmware version.

Method 2: Check Firmware Using Garmin Express on a Computer

Remove the battery pack from the TT25.
This reveals the charging port.

Connect the collar to your computer using the Garmin charging clip and USB cable.


Open Garmin Express on your computer.If you don’t have it, download it for free from Garmin’s official site.

Add the TT25 to Garmin Express.
Once connected, Garmin Express will recognize the collar and display its current firmware version.

Check for Updates.
Garmin Express will tell you if a software update is available and walk you through installing it.

Tip:

Using Garmin Express is a great option if your handheld isn’t available or you want to ensure everything is fully up to date before a hunt.

How Long Does the TT25 Battery Last?

Battery life depends on the update rate and which battery pack you’re using:

• Standard Battery Pack:
  
  Up to 68 hours of use in Dynamic Update Rate mode
  
  Around 25–55 hours on fixed update rates (like 2.5s or 5s)
  
  
• Extended Battery Pack (sold separately):
  
  Up to 136 hours in Dynamic mode
  
  Around 50–100+ hours on fixed update rates depending on usage
  
  

Tips to Extend Battery Life

Use Dynamic Update Rate

This is the #1 way to extend battery life. It automatically slows updates when your dog is resting and speeds them up when they’re moving.

Avoid Using Fast Fixed Update Rates (Like 2.5 Seconds)

These drain the battery faster because they constantly transmit. Choose 5 or 10 seconds, or use Dynamic when possible.

Turn Off Unused Features

Makes sure things like collar lights are off when not in use to conserve battery life.

Fully Charge Before Use

Make sure the battery is fully charged before heading out. Partial charges can limit runtime.

Keep Software Updated

Garmin occasionally releases firmware updates that improve battery efficiency.

Store Properly When Not in Use

If you’re storing the collar for an extended time, power it off completely and recharge every few months to keep the battery healthy.

What Size Dogs Do the Garmin TT25 Collars Fit?

The Garmin TT25 collar is built to fit a wide range of dog sizes—from small hunting dogs to large working breeds.

The TT25 Mini can fit necks as small as 7 inches, making it ideal for very small dogs and puppies.

The standard TT25 fits neck sizes from approximately 9 inches up to 24 inches, depending on the strap and band style used.

Both versions can fit any neck size, but for dogs with necks larger than 24 inches, you may need to purchase a longer custom strap separately to ensure a proper and secure fit.

Works well for:

Small breeds: like rabbit beagles, Mountain Feists, Boykins, terriers, and puppies

Medium to large breeds: like hounds, retrievers, and curs

Customizable Fit Options:

Choose from Zero Length, Standard, or Rugged Flex Bands

Swap out straps for different lengths, materials, or colors

Bottom Line:

From 7" necks on tiny terriers to 24"+ necks on big hounds, the TT25 and TT25 Mini collars offer a flexible, customizable fit for nearly every dog.

Let me know if you'd like this formatted for a product page or printed handout!

How to Master Reset a Garmin TT25 Collar

A master reset can help resolve several common issues with the Garmin TT25 collar. It’s especially useful if:

• The collar is frozen or unresponsive
• Battery information appears incorrect
• The collar is not communicating properly
• You're preparing to sell or transfer the collar and want to clear all personal data and track logs

Steps to Perform a Master Reset

1. Connect to Charger

Plug the TT25 collar into its charging cable and ensure it begins charging normally.

2. Initiate the Reset

With the collar still connected to power, press the power button 4 times in a row.

• Allow about ½ second between each press
• Do not hold the button—use quick, even presses

3. Confirmation Sequence

After the fourth press, the collar will go through a sequence of flashing lights and audible beeps. This indicates the reset process is complete.

4. Re-add to Handheld

Important: Once the collar is reset, it is no longer paired with any handheld device. You must re-add the TT25 to your Garmin handheld before it can be used again.

How to Update a Garmin TT25 Collar

Keeping your TT25 collar updated ensures it has the latest features, bug fixes, and performance improvements. You can update it wirelessly through a compatible handheld (like the Alpha 300 or Alpha 200i) or manually using Garmin Express on a computer.

Option 1: Update via Handheld (Wireless Method)

Compatible with Alpha 300, 200, 200i, and some other models.

1. Power on your Garmin Handheld and TT25 Collar.

Make sure both devices are charged and turned on.

2. Ensure Bluetooth and Wi-Fi are enabled on your handheld.

You can check this in your handheld’s settings menu.

3. Check for Updates:

• 
  Main Menu > Collar Settings > TT25 > Software Update.
  
• If an update is available, you’ll see a prompt to install it.

4. Install the Update:

• Follow the on-screen instructions.
• The collar may restart once the update is installed.
• 
  This process can take a few minutes depending on the size of the update.

5. Reboot Devices (if needed):

After the update, restart both the collar and the handheld for best performance.

Option 2: Update via Garmin Express (Wired Method)

1. Download and Install Garmin Express:

Visit https://www.garmin.com/express and install Garmin Express on your PC or Mac.

2. Plug In the TT25 Collar:

Use the included USB cable to connect the charging clip to your computer and attach it to the collar.

3. Launch Garmin Express:

• Open the app and follow the prompts to add the TT25 as a device.
  
  
• If updates are available, Garmin Express will prompt you to install them.

4. Install Updates:

• Follow the on-screen instructions.
• Keep the collar connected until the process is 100% complete.

5. Safely Eject and Disconnect the Collar.

How to Change the Update Rate on a Garmin TT25 Collar

The update rate (also known as the refresh rate) determines how often your TT25 collar sends location information to your handheld. Faster rates (like every 2.5 seconds) provide more real-time tracking, while slower rates (like 30 or 120 seconds) help conserve battery life.

Steps to Change the Update Rate

These steps are for compatible Garmin handhelds like the Alpha 300, Alpha 200i, or Alpha 200:

Power on your Handheld and TT25 Collar.

Make sure the collar is actively connected to the handheld.

Go to the Dog List.

On your handheld, press the Dog button or go to the Main Menu > Dog List.

Select the TT25 Collar.

Tap or select the dog/collar you want to adjust.

Open Collar Settings.

Scroll down and choose "Update Rate" or "Tracking Update Rate."

Choose Your Desired Update Rate:

Common options include:

• dynamic mode ( only in TT25/ T20)
• 2.5 seconds
• 5 seconds
• 10 seconds
• 30 seconds
• 120 seconds

Confirm the Selection.

Your new update rate will take effect immediately. The collar may briefly resync with the handheld after the change.

How to Set Up Wi-Fi on a Garmin TT25 Collar

Setting up Wi-Fi on the TT25 allows the collar to receive software updates over-the-air (OTA) when paired with a compatible handheld like the Garmin Alpha 300 or 200i. The collar itself does not connect directly to Wi-Fi — instead, it updates wirelessly through the handheld.

Wi-Fi Setup Process (Via Garmin Alpha 300 or 200i)

The handheld manages the Wi-Fi connection. Here's how to set it up:

1. Connect Your Handheld to Wi-Fi

• Turn on your handheld (Alpha 300, 200i, etc.)
• Navigate to: Main Menu > Setup > Wi-Fi
  
• Select Add Network
  
  Choose your network and enter the Wi-Fi password

• Once connected, the handheld will use this network for software updates
  
  

2. Enable Bluetooth on the Handheld
Ensure Bluetooth is ON:
Main Menu > Setup > Bluetooth > Status: On

3. Pair the TT25 Collar
If the collar is not already paired, go to:

Main Menu > Dog List > Add Dog > TT25

• Follow on-screen steps to pair the collar with your handheld

4. Set Up Wifi

With the collar nearby and powered on, go to: Main Menu > Dog List > Select Collar > Collar Settings > Collar Wifi > follow the prompted steps on handheld > select done > repeat these step as many times as needed

If an update is available, it will automatically begin downloading and installing via the handheld's Wi-Fi connection

Auto-Update Tip

To help keep your TT25 collar up to date without manually checking, simply:

• Bring the collar inside near your Wi-Fi network every couple of months
• Leave both the collar and handheld turned on
• As long as your handheld is connected to Wi-Fi and Bluetooth is enabled, it will automatically check for and install updates to the collar when available

Important Reminders:

• The TT25 does not connect directly to Wi-Fi — it receives updates via the handheld
• Keep the collar close to the handheld during updates
• Plug the collar into its charger if the update is large or taking time
• A series of beeps or flashing lights may occur during the update process — this is normal

Steps to Turn TT25 Lights On or Off (Using a Garmin Handheld)

1. Power On Your Devices
Make sure the TT25 collar and your Garmin handheld (Alpha 300, 200i, or Alpha XL) are both turned on and paired.

2. Access the Dog List

From the handheld’s main menu, press the Dog button or go to:

Main Menu > Dog List

3. Select the TT25 Collar
Tap or scroll to the collar you'd like to adjust.

4. Open Light Settings

Navigate to:

Adjust Collar Light > Blink Mode

Choose a Light Mode

You can choose from the following settings:

• Continuous
• Blink Slow
• Blink Fast
• Off
  

Steps to Turn TT25 Lights On or Off (Using a Garmin Handheld)

1. Power On Your Devices
Make sure the TT25 collar and your Garmin handheld (Alpha 300, 200i, or Alpha XL) are both turned on and paired.

2. Access the Dog List

From the handheld’s main menu, press the Dog button or go to:

Main Menu > Dog List

3. Select the TT25 Collar
Tap or scroll to the collar you'd like to adjust.

4. Open Light Settings

Navigate to:

Adjust Collar Light > Change Color

Choose a Collar Color

You can choose from the following colors:

• Red
• Green
• Blue
• Yellow
• Cyan
• Magenta
• White
  

Steps to Change the Collar Name

1. Power On the Handheld
   
   Turn on your Garmin handheld (Alpha 300, 200, 200i, or XL).
   

1. Go to the Dog List
   
   From the main screen, press the Dog button or navigate to:
   
   Main Menu > Dog List

3. Select the TT25 Collar You Want to Rename

Scroll through the list and choose the dog/collar you'd like to update.

4. Change The Name

You will now be in the dogs collar info/ setings. In the Top of the scrren you will see the dogs name. Tap the name > Edit The Dogs name using Keyboard < Select ✅ (Checkmark) in the bottom right corner to save change.

Steps to Change the Collar Name

1. Power On the Handheld
   
   Turn on your Garmin handheld (Alpha 300, 200, 200i, or XL).
   

1. Go to the Dog List
   
   From the main screen, press the Dog button or navigate to:
   
   Main Menu > Dog List

3. Select the TT25 Collar You Want to Change the track color on.

Scroll through the list and choose the dog/collar you'd like to track color update.


4. Change Track Color

To change the track color look at the top of your dogs info/ setting screen you will see the dogs name and next to it will be a colored box this is your track color.

To change this select track box < scroll select your new color < repeat this process for all needed collars

Dog tracks on the Garmin Alpha XL are colored lines that show each dog’s path on the map in real time. Each dog has a unique color, making it easy to track multiple dogs and see where they've been. This is helpful for spotting patterns, retracing steps, or checking how far a dog has traveled.

You can customize how long tracks stay visible by selecting from No Tracks, 5 minutes, 10 minutes, 30 minutes, 1 hour, 2 hours, or showing all. These settings help keep your map clean or provide full trail history. Track lines can also be turned on or off in the map or dog setup settings.

How To Turn On/ Off and customize dog tracks- To change how long dog tracks show on your map in the Alpha XL, start by going to Setup in the bottom right corner of the main menu. Then select Dog Tracking, followed by Dog Tracks on Map. From there, you can choose how long you want the tracks to stay visible—options include Show None, 5 minutes, 10 minutes, 30 minutes, 1 hour, 2 hours, or Show All. This setting helps you control how much trail history shows up on your map during a hunt.Dog Track Time Frame Options – What They Mean and When to Use Them

Show None – Turns off dog tracks completely. Great if you prefer a clean map with no track lines.

5–10 Minutes – Ideal for handlers running multiple dogs. It gives a quick view of where each dog has recently been and where they’re heading—without cluttering the screen.

30 Minutes – A balanced option for those with several dogs. It offers more trail history than 10 minutes but still keeps the display manageable.

1–2 Hours – Perfect for users with fewer dogs. These settings show a good overview of your dog’s movement patterns over a couple of hours and help you track their path without overwhelming the screen.

Show All – Keeps all dog tracks on the map until you start a new hunt. This is a great option for those running just a few dogs who want to see the full history of the hunt.

Bonus Tip:

Even if you choose a shorter track time (like 5 or 10 minutes), don’t worry—you can still view the full track for each dog in your Track Manager. The Alpha XL records the complete path, so you won’t lose any tracking data. It just keeps your map view cleaner while still saving everything in the background.

Steps to Remove a TT25 Collar

1. Power On Your Handheld
   
   
   Turn on your Garmin Alpha handheld.
   
2. Go to the Dog List
   
   
   From the main screen, tap the Dog button or navigate to:
   
   Main Menu > Dog List
   
3. Open the Options Menu
   
   
   On the Dog List screen, tap the menu icon (three horizontal lines, often called the "hamburger" icon) in the bottom left corner of the screen.
   
4. Select Remove
   
   
   Choose “Remove” from the menu options.
   

What Is Rescue Mode on the Garmin TT25 Collar?

Rescue Mode is an automatic battery-saving feature that activates when your TT25’s battery gets low. It changes the collar’s update rate to 2-minute intervals to conserve power and help you keep tracking your dog longer.

• Activates automatically at low battery (around 25%)
• Cannot be turned off or disabled
• Slows update rate to extend battery life

Tip:

If you have a lost or unreachable dog, we recommend manually putting the collar in Sleep Mode instead. Sleep Mode saves significantly more battery than Rescue Mode and helps preserve power until the dog comes back into range.

Steps To Put A TT25 in Rescue Mode

1. Power On Your Handheld
   
   
   Turn on your Garmin Alpha handheld.
   
2. Go to the Dog List
   
   
   From the main screen, tap the Dog button or navigate to:
   
   Main Menu > Dog List
   
3. Open the Options Menu
   
   
   On the Dog List screen, tap the menu icon (three horizontal lines, often called the "hamburger" icon) in the bottom left corner of the screen.

4. Select Rescue Mode

Select rescue mode and this will automatically put your collars into a rescue mode until it is turned off following the same steps.

Sleep Mode on a Garmin TT25 Collar is a power-saving feature designed to extend battery life when the collar is not actively being used. Instead of turning the collar off completely, you can place it into sleep mode to pause GPS tracking and communication with the handheld—while still keeping the collar ready to wake back up quickly.

What Sleep Mode Does:

• Stops GPS tracking

The collar pauses location reporting and tracking functions.

• Disables communication with the handheld

It won’t update or respond to commands until reactivated.

• Conserves battery power

Ideal when you're not using the collar for several hours or overnight.

When to Use Sleep Mode:

• While traveling to a hunt or event
  
• Between training sessions or hunts
• To preserve battery during downtime without powering the collar completely off

Steps To Put a TT25 Collar In Sleep Mode

1. Power On Your Handheld
   
   
   Turn on your Garmin Alpha handheld.
   
2. Go to the Dog List
   
   
   From the main screen, tap the Dog button or navigate to:
   
   Main Menu > Dog List
   
3. Open the Options Menu
   
   
   On the Dog List screen, tap the menu icon (three horizontal lines, often called the "hamburger" icon) in the bottom left corner of the screen.

4. Select Sleep Mode

Select sleep mode and this will auto put your collar into sleep mode. This feature will not be turned off until you follow the same steps and turn it off.

If You Are Adding a New TT25 That Belongs to You

If the interfering collar is yours (like a newly purchased or backup collar), then it’s safe to resolve the conflict by changing the ID—but the handheld will do this automatically as long as you follow the proper steps.

Steps to Add a New Collar Without Interference:

1. Make sure all your current collars are turned on and active.
This is critical so your handheld can detect their IDs and avoid conflicts during setup.

2. On your handheld, go to: Dog List > Add Dog.

3. Choose how you want to add the collar:

• Manual Collar Pairing
• Wireless pairing
• Manual code entry

4.When prompted, select “Track Both Devices.”

This tells your handheld to automatically change the new collar’s ID to something unique and non-conflicting.

Once added, the new collar will work alongside your other collars without tracking issues or ID interference.

If You Are Adding Someone Else’s Collar

If you try to add a TT25 that’s already assigned to someone else’s handheld and you get the message:

“The new collar ID conflicts with [Dog Name].”

You will have two options:

Add the collar but do not track it right now

The collar will be added to your dog list as inactive. You won’t receive location updates until you choose to activate tracking later.

Track the new collar

This will activate the new collar, but your handheld will deactivate the other dog’s collar that shares the same ID (you’ll lose tracking on that collar unless its ID is changed or reset).

⚠️ Do not proceed unless you’re 100% sure whose collar it is and that it’s safe to override your other dog’s data.

What to Do if a TT25 Collar is Jumping Between Locations or Showing Incorrect Tracking

If your TT25 collar appears to be “jumping” between different locations on the map or is showing a spot where your dog clearly isn’t, the issue is most likely due to collar ID interference.

This happens when two collars in the area are using the same collar ID. Your handheld may be receiving signals from both devices, causing it to mix up the location data—leading to confusing or incorrect tracking.

How to Fix It

To solve this, you’ll need to assign a new collar ID to your TT25. This ensures your handheld and collar use a unique signal that doesn’t overlap with any others nearby.

⚠️ IMPORTANT:

Do NOT change the collar ID while your dog is on the ground or out in the field.

If you change the ID while the dog is active and someone else is using a collar with the same ID, both of you could lose tracking entirely. Always wait until your dog is back in your possession and the collar is safely in hand.

Steps to Change the Collar ID:

1. Make sure the dog is with you and the collar is in your hand.
   
2. On your Garmin handheld, go to the dog list or dog settings.
3. Select the collar and look for the “ID” or “Collar ID” setting.
4. Choose a new, unused ID
5. Confirm and save your settings.
   
6. Let the collar and handheld resync.
   
   

What It Means if a TT25 Collar Has Lost Communication

If your TT25 shows “Lost Communication,” it means your handheld is no longer able to connect with the collar. This stops all tracking, battery updates, and command functions (like tone, vibrate, and LED). It’s as if the handheld can no longer “see” or “hear” the collar at all.

Why It Happens

• Collar is powered off or the battery is dead
• Collar is out of range (too far from handheld)
• Collar is under terrain blockage like hills or thick woods
• Collar is inside a dog box, metal crate, or vehicle
• Antenna is damaged, missing, or not connected (on collar or handheld)
• Radio/ ID interference or system glitch
• Software is outdated or corrupted
  
  Fixes to Try

1. Bring the Collar Closer

Move toward the last known location of the dog. If the collar is simply out of range or under terrain blockage, getting closer may restore signal.

2. Check the Battery

If you suspect the collar battery has died, power it back on or charge it as soon as you have the collar in hand. You can’t get communication if the collar is off or out of power.

3. Turn It Off and Back On

Once the collar is in your hands, power it down completely, wait a few seconds, and turn it back on. A quick restart can fix minor issues or reconnect a dropped signal.

4. Inspect the Antennas

• : Look for cuts, bends, fraying, or missing antenna wire. A damaged antenna can stop communication.
  
• : Make sure it’s securely screwed on and not broken.
  
  5. Replace the Collar Antenna (If Needed)
  
  If the antenna is badly damaged or missing, you’ll need to install a new one. The TT25 uses a user-replaceable long-range antenna.

6. Try Another Handheld

If you have access to another compatible handheld, try pairing the collar to it. This helps confirm if the problem is with the collar or the original handheld.

6. Update the Firmware

Use Garmin Express or a compatible handheld to check for updates. Communication bugs are sometimes fixed in newer versions.

7. Factory Reset the Collar (Last Resort)

If everything else fails and you have the collar in hand, you can try a factory reset. This clears all settings and restores the collar to default—but should only be done after confirming the issue isn’t hardware-related.

What It Means if a TT25 Collar Has Lost GPS

If your TT25 shows “Lost GPS,” it means the collar isn’t receiving satellite signals. This stops it from tracking your dog’s location or updating its position on your handheld.

Why It Happens

• Collar is indoors or in a crate
• Collar is in a metal dog box or under metal roof
• Thick tree cover or steep terrain
• GPS Flexband wire is damaged
• Software glitch or outdated firmware

Fixes to Try

1. Take it Outside

Make sure the collar is in an open area with a clear view of the sky. GPS signals can be blocked by metal, buildings, dense tree cover, or even being inside a vehicle or dog box.

2. Wait 5–10 Minutes

After powering on, give the collar time to reacquire satellites—especially if it was just restarted, charged, or moved a long distance (like traveling in a vehicle while powered off). It’s normal for it to take a few minutes to lock back onto satellites.

3. Turn it off and back on – A quick reboot may fix the issue. Once the Collar Is in your hands turn it off and let it restart to see if that fixes the issue.

4. Inspect The GPS Locator/ Flexband- Make sure there is no nicks, rips, tears, bite marks, etc in the GPS Flex Band. If this is the case the Band is most likely permanently broken and will need replacement.

5. Update the Firmware

Outdated software can lead to glitches. Use Garmin Express on a computer or pair the collar with a compatible handheld that can push firmware updates. Updated firmware often fixes bugs that affect GPS performance.

6. Try a Different Handheld

If you have access to another Garmin handheld (like a different Alpha or Astro model), pair the collar to it temporarily. This helps determine if the issue is with the collar itself or your main handheld.

7. Factory Reset the Collar (Last Resort)

If nothing else works, you can do a factory reset. This will remove all settings, clear memory, and return the collar to default. Only use this step if you've tried everything else, and back up any data you need before doing it.

Lost GPS (Collar Lost GPS Signal)

This means the collar itself is turned on and connected to the handheld, but it cannot determine its location because it’s not receiving signals from GPS satellites.

What You’ll See:

• The dog is still listed as connected, but shows “Lost GPS.”
• The last known location is frozen on the map.
• Distance, speed, and direction stop updating.
• The collar still responds to commands (tone, vibrate, LED) because communication is intact.

Common Causes:

• Collar is indoors or in a crate
• Collar is in a metal dog box or under metal roof
• Thick tree cover or steep terrain
• GPS Flexband wire is damaged
• Software glitch or outdated firmware

Fix:

Go under the " What to do if a TT25 collar has lost GPS section for detailed help.

Lost Communication (Handheld Lost Contact With Collar)

This means the handheld can no longer connect to the collar at all—either temporarily or completely. The handheld isn't receiving any signals, including GPS data, battery status, or command feedback.

What You’ll See:

• A Question Mark (?) will show up in the place of the dogs status.
• Lost Communication” message next to the dog’s name.
• All collar data stops updating (no location, battery, or movement).
• You cannot send tone, vibrate, or light commands.
• LED command doesn't reach the collar.
• You may hear a warning tone from the handheld (depending on model/settings).

Common Causes:

• Collar is out of range (typically 4–9 miles line-of-sight, less in rough terrain).
• Collar battery is dead.
  
• Collar is turned off.
• Antenna on the handheld or collar is damaged or missing.
• Interference from terrain, buildings, metal structures, or other radio devices.

Fix: Please go to the " What to do if a TT25 collar has lost Communication" for a detailed overview.

Rugged Flex Band for Garmin TT25 – Overview

What it is:

A heavy-duty replacement band for the Garmin TT25 dog collar. It's made for dogs that work or train in rough conditions.

Key Benefits:

• 
  Stronger than the standard band—less likely to tear or wear out.
  
• 
  Moves better with your dog while staying snug.
  
• 
  Handles mud, water, and brush with no problem.
  
• 
  Helps the TT25 unit stay in place during use.
  

Why You’d Use It:

Perfect for hunting dogs in rough terrain or heavy cover. Highly recommended for people hunting hogs, bears, cats, and other game where collars are more likely to get caught, chewed, or damaged. It’s built to last and helps protect your TT25 from unnecessary wear or failure.

Zero Length Short Flex Band for Garmin TT25 – Overview

What it is:

A compact band option for the Garmin TT25 collar that has virtually no extra strap length—it holds the tracking unit snug to the dog’s neck with the smallest footprint possible.

What it does:

This band makes the overall neck size needed to fit the TT25 almost nothing, making it the absolute best option for smaller dogs. It's a great choice for rabbit beagles, Mountain Feists, Boykins, terriers, puppies, and more. Even though it's ideal for small breeds, it still works just fine on larger dogs too.

With no extra slack or long straps, the collar stays clean, tight, and low-profile. The minimal design also helps reduce the chances of the strap getting caught in brush or chewed on by other dogs.

Why you’d use it:

If you’re working with small dogs or want the most compact setup possible, this band gives you the tightest fit available—shrinking the collar’s required neck size to nearly zero.

Standard Flex Band for Garmin TT25 – Overview

What it is:

The standard flex band is the default band included with the Garmin TT25 collar. It’s a balanced, all-purpose option designed to fit a wide range of dog sizes comfortably and securely.

What it does:

This band offers a flexible yet durable fit that works well for most hunting and working dogs. It provides enough strap length to adjust easily on medium to large breeds while still being slim enough for some smaller dogs. The material is rugged enough for regular field use but not as heavy-duty as the rugged flex band.

It’s a great middle-ground choice—easy to adjust, lightweight, and reliable for everyday use. This is the recommended option for most standard use cases where no extreme conditions or specialized needs are involved.

Why you’d use it:

Perfect if you want a standard, no-fuss setup that works for most dogs out of the box. Whether you're running hounds, retrievers, or general-purpose hunting dogs, the standard band is a dependable and comfortable option.

Standard Battery Pack for Garmin TT25 – Overview

What it is:

The standard battery pack is the default power option included with all Garmin TT25 and TT25 Mini collars. It’s designed to provide a reliable balance of battery life and weight, making it ideal for dogs of all sizes—from small breeds to large hounds.

What it does:

This battery pack gives you up to 68 hours of runtime in dynamic tracking mode, depending on usage and update settings. It offers excellent longevity for regular hunts, tracking sessions, and day-to-day use without adding extra bulk or weight to the collar.

Because it's the standard size, this is the battery included with both the full-size TT25 and the smaller TT25 Mini collars. It fits securely and maintains the collar’s low-profile, ergonomic design, making it comfortable for dogs of all sizes.

Why you’d use it:

Perfect for hunters and trainers who want dependable battery life without adding weight. Whether you're running small dogs like Feists or Beagles or larger breeds like hounds or retrievers, the standard battery pack is the right fit for all.

Extended Battery Pack for Garmin TT25 – Overview

What it is:

The extended battery pack is an optional power upgrade for the Garmin TT25 collar. It’s designed for users who need maximum battery life in the field, especially during long hunts, multi-day trips, or when recharging between uses isn't always convenient.

What it does:

This pack increases your collar’s runtime up to 136 hours in dynamic tracking mode—double the life of the standard battery pack. It gives you significantly more time between charges, which is ideal for extended tracking sessions or when running multiple dogs over several days.

While it does add a bit more weight and bulk than the standard pack, it’s still designed to mount seamlessly onto the TT25 and remain balanced and secure. It’s best suited for medium to large dogs due to the added size.

Why you’d use it:

Great for serious hunters and trainers who are out in the field for long periods and need extended performance. If you need more time between charges and don’t want to risk running out of power mid-hunt, the extended battery pack is your go-to option.

How to Replace or Reinstall a GPS Flex Band on a TT25 Collar

What You'll Need:

• TT25 collar
• Replacement GPS Flex Band of choice (Standard, Zero, or Rugged)
  
• Small Phillips head screwdriver (do not use a drill)

Steps:

Power Off the Collar

• Make sure the TT25 collar is completely powered off before starting any work.

Remove the Flex Band

• Unscrew and remove the existing flex band.
• If you're reusing the same band, inspect it and clean the connection port to remove any dirt or buildup.

Clean the Area

• Use an alcohol wipe or similar to clean the flex band connection area on the collar.
• Let the area dry completely before proceeding.

Reinstall the Flex Band

• Insert the screws into the flex band before aligning it with the TT25.
• Line up the flex band with the slot on the collar.
• Hold firm pressure on the band while installing it.
• Start by tightening one screw halfway, then do the same for the second screw.
• Once both are partially tightened, finish tightening both screws to ensure a proper waterproof seal.

Test the Collar

• Add the collar to your handheld device to verify it's working.
• You can also check the status light: it should change from yellow to green when GPS connection is active.

Note:

These instructions apply whether you're installing a brand-new GPS flex band or removing, cleaning, and reinstalling your current band to resolve GPS issues. Re-seating a dirty or loose flex band can often fix tracking problems.

How to Replace a TT25 Battery Pack

What You'll Need:

1. TT25 collar
2. Replacement battery pack (Standard or Extended)
3. T10 Torx screwdriver
4. Small Phillips head screwdriver
   

Steps:

1. Power Off the Collar
Make sure the collar is completely turned off before starting.

2. Remove the Antenna Cover

Carefully remove the antenna cover. This is the spot where your VHF antenna comes out of the collar. Underneath the cover is a hidden screw that must be removed using a small Phillips head screwdriver.

3.Unscrew the Battery Pack

After removing the hidden screw, use a T10 Torx screwdriver to remove the remaining outer screws on the battery pack.

4.Remove the Old Battery Pack

Gently lift and detach the battery pack from the collar body. It should come off cleanly once all screws are removed.

5. Attach the New Battery Pack

Align the new battery pack with the collar, ensuring all connection points are properly seated.

6. Reinstall Screws

Reinsert and tighten all screws, including the hidden one under the antenna cover. Be careful not to overtighten.

7. Power On and Test

Turn the collar back on and make sure it connects properly to your handheld.

Tips:

1. Standard battery: lighter weight, lower profile

2. Extended battery: longer runtime for extended use

3. Both options are interchangeable and easy to swap anytime

4. It's recommended to go around and half-tighten all screws first, then go back around to fully tighten. This helps ensure the water seal is properly seated and even.

How to Replace the VHF Antenna on a TT25 Collar

What You'll Need:

• TT25 collar
• Replacement VHF antenna
• Small Phillips head screwdriver
• Medium Phillips head screwdriver

Steps:

Power Off the Collar

• Fully turn off the TT25 collar before beginning the replacement.

Remove the Antenna Cover

• This is the plastic cover where the VHF antenna exits the collar.
• Use the small Phillips head screwdriver to remove the two screws holding the cover in place.
• Carefully lift off the cover to expose the antenna port.

Remove the Old VHF Antenna

• Use the medium Phillips head screwdriver to unscrew and remove the old antenna from its base.
• If the area is dirty, clean it using an alcohol wipe or similar product.
• Let the area dry completely before continuing.

Install the New Antenna

• Align the new antenna with the antenna hole.
• 
  Make sure the flat side is facing up and the curved (dipped-in) side is facing down—this ensures the antenna is oriented correctly.
• Carefully screw in the new antenna using the medium screwdriver.
• Do not overtighten, as the antenna screws can strip or break easily

Reinstall the Cover

• Position the plastic antenna cover back over the antenna port.
• Use the small Phillips screwdriver to reinstall and tighten the two screws.

Now you're ready to get back into the field with a fresh, properly installed VHF antenna!

How to Remove or Change the Prongs on a TT25 Collar

What You'll Need:

• TT25 collar
• Prong removal tool (comes with most Garmin collars)
• Needle nose pliers (if you don’t have the tool)
• Replacement prongs (short, standard, or long)
• Clean cloth (optional, for cleaning around contact points)

Steps:

Power Off the Collar

• Turn off the TT25 collar to avoid accidental correction while handling the prongs.

Identify the Prongs

• The prongs are located on the bottom side of the collar’s correction module—the part that touches the dog’s neck.

Unscrew the Old Prongs

• Use the Garmin prong removal tool to unscrew each prong by turning counterclockwise.
• If you don’t have the tool, needle nose pliers are a good alternative.
• Clean around the contact area with a dry cloth if needed.

Choose and Install New Prongs (Optional)

• If you want to reinstall prongs, pick the right length for your dog’s coat:
• Short for short-haired dogs
  Long for thick or long-haired dogs
• Screw in the new prongs by hand, then use the Garmin prong tool to gently tighten them.
• Be very careful not to overtighten. The prongs can break if too much pressure is applied.
  
• If you don’t want to reinstall prongs, you can leave them off. The collar will still work for GPS tracking and LED lights, toning, vibration but the training functions (stimulation) will be disabled.

Double Check Fit and Contact

• If prongs are installed, make sure they are snug and even.
• They should lightly touch your dog’s skin without pressing hard.
  

Power On and Test

• Turn the collar back on.
• Test the connection or features depending on whether prongs are installed.

Tips:

• Always use the Garmin prong tool for final tightening to ensure a secure fit—but never overtighten.
• Keeping a few extra prongs in your gear bag is a smart backup.
  
• Running the collar without prongs is completely fine if you don’t use the training feature.
• If stimulation seems inconsistent, check for loose or worn prongs.

Removing the Old Strap

1. Start at the GPS Locator End

Try pushing the strap by hand through the plastic GPS locator.

If that’s difficult, use a flathead screwdriver to gently wedge under the strap and lift it until you can slide it out. This works the same way as pulling it out by hand.

2. Feed Through the GPS Flex Band

Continue removing the strap by sliding it through the rest of the GPS flex band and the antenna keeper. After this step, the strap should only be threaded through the TT25 base unit.

3. Remove from the TT25 Base Sections

Use your flathead screwdriver to get under the strap in the first section of the TT25 base—right between the beginning of the collar base and the first small plastic divider.

Gently wedge the tool under and pull the strap up and out.

The smaller the sections you work through, the easier and safer it is to remove the strap without damaging anything.

Repeat this process for each remaining section until only the buckle end is holding the strap. Pull the strap completely out from there.

Clean the Unit (Optional but Recommended)

Take a damp sponge or rag and clean the collar thoroughly.

This step not only gives the collar a fresh look but also helps the new strap glide through more smoothly.

Make sure the collar is fully dry before reinstalling the strap.

Reinstalling the New Strap

Start Opposite the GPS Flex Band

• Feed the new strap into the collar on the side opposite the GPS Flex Band. Pull it through until the buckle sits snug against the edge of the TT25.

Work Through Each Section

• Slide the strap through each section of the TT25 base.
  
  If it gets stuck, apply a small pump of hand sanitizer to the strap’s end. Spread it out evenly to help it slide more easily.

Finish the Feed

• Continue until the strap has passed through all sections, including the GPS flex band and antenna keeper.