This unit works great. Helps me keep my dogs away from the highway. Also dont have to worry about my coonhound coming back when hunting......always know where he is. Gundogsupply is a great company to work with.....fast shipping!!!

Collar picks up quickly and updates often as dog is traveling. Great options for correction too with tone, vibrate, and stimulation.

Great tracking and training collar, very easy to get started on. I still am trying figure everything out with it mostly how to download the map so I can see ground my dog has covered.

Zero complaints with this system. I upgraded from a 220/DC30 system and haven’t regretted it. The biggest flaw with the system for me is it has made me a lazy hunter per say lol. I definitely don’t like hunting without it.

Very happy with my new Alpha 100 and tt15 combo. responds quickly to the dogs movements, easy to determine where he is, even in heavy cover.

I think I will ultimately be happy with the Garmin Alpha 100/TT15, but not without a lot of initial grief. I've spent a couple of long evenings preparing the physical and electronic component features of the collar and transmitter, and two days in the field and 3-4 hours on YouTube trying to figure out the system. The instruction booklet is extremely difficult to read and is incomplete. The diagrams and print are very small and the labeling is imprecise. The booklet should have larger diagrams and detailed step-by-step instructions. The first day in the field, three of us struggled for an hour to get the transmitter to follow the dog collar. Then someone mistakenly entered a way point that linked to the transmitter. The transmitter was no longer following the dog. After hunting a corn field and risking losing my dog, I had to clear everything out and start all over. The second time hunting, the GPS linkage finally worked OK. I rigged up a lanyard to carry the transmitter around my neck. (The instructions said there is a lanyard connection, but no instructions. My previous e-collars contained a lanyard attached to the transmitter, the Garmin did not). Every time I let the transmitter hang on my neck, the touchscreen would inadvertently contact my call-whistle, or a button, or my shirt, or chest, and open another function. Sometimes it would open an entry screen and each touch would enter a different letter or character. Then, every time I tried to located the dog, I had to undo the inadvertent touchscreen entries. After returning home, and watching a YouTube troubleshooting video, I discovered how to lock the screen. Even after locking the screen, when there is an inadvertent touch, I still have to back out of the entry denial screen to locate the dog. These are significant distractions from hunting. It would be nice if the transmitter would just stay on the GPS compass locator when selected. As stated in the beginning, maybe when I get past the learning curve, I will be satisfied. Too early to tell.

Great combination. I’m new to owning a hunting dog and first one I’ve ever trained. I’ve used the ecollar portion very little this far, but love looking at the tracks my dog takes and how he ends up hunting depending upon conditions. Waterproofness has been as advertised.

I am very happy with this purchase. I don't know if I really need this nice of a unit but I rather have and not need than need and not have. Have been on a few hints so far where my pup was on birds but I couldn't see him so the GPS which was my main reason for the purchase really came in handy. I have a pro 550 also which is also a good unit and also gets used mostly in places I'm really familiar with.

I have used this system for the last five years hunting chukar with my GSP. I have exchanged the handheld unit once during this period when it broke and am now on my third collar for the dog after the two previous collars ceased functioning. Durable it is not. Reliability is also less than great- can’t count the times the handheld sounded the on point alert and indicated the dog was somewhere other than where I could see her. However like many other Garmin products I have purchased over the years when this system works as promised it is great and really indispensable for finding an on point dog in the sagebrush

Have not had the Garmin a super long time yet, but I am finding it to be a super tool for bird hunting in both conifers, aspen, and beach with Grouse and in lower growth for Pheasant. I would not use it as a daily training collar that you want to use on a regular daily basis.

I purchase my Alpha 100 with TT 15 and was pleased with the ease of initial set up and use. I will be using it this fall on my started pup this fall. I look forward to the peace of mind it will give me when I’m out in the woods, I will be able to know where my pup is at all times, and make minor corrections when necessary.

Over the years I have had numerous hunting dogs, all German Shorthairs. During that time I have also used different products to help in keeping track of the dogs in field, most were some kind of beeper collar.

About three or four years back I decided to try the GPS style unit and glad I did. Although they're not perfect they sure make things a lot easier. Wish I had bought this back when I had three dogs in the field almost all the time.

I'm not into all the high tech stuff available with the unit but it does what I need it for, keeping track of my pointer.

nice unit, relatively easy to operate. Don't be too intimidated by the interface, it isn't that hard. I haven't used it for training yet but it will probably be adequate for a casual, every day handler.

This a great tool for training and keeping track of your dog in the field. In my case, the north woods.
Gun Dog Supply's typical great price and service sealed the deal.

So far this unit is packed with great features not as intimidating as when first out of the box. Became easier to use as I played with it.

This was my third Astro, the first one with the training feature in it. As always Garman products it was easy to set up, and works exactly as you expected to. A great product well serviced through Gun Dog Supply who were great to do business with.

I have had this system for about three months. Have used it in the field for training while trying to learn the various features before hunting season. I like the tracking feature using the compass. It has many bells and whistles that I doubt I will ever use, like finding nearby restaurants. I plan on downloading better maps before going to KS. It takes a bit of getting used to, especially changing the level of correction. The only negative I have experienced is the amount of time it takes to get the collar and handheld communicating with each other. I live around a lot of trees and it doesn't seem to work too well in the trees. But my hunting will be on the plains so expect it will do fine. I would recommend it for the tracking.

Works good

I don't care for the long antennae. It seems like to takes a very long time to charge the transmitter.
It came with a black collar instead of the orange collar I had to buy extra.

Instant notification when my dog is out of site. I know immediately what the dog is up to. It eliminates the need to call the dog back because you don't know where or what is going on. My biggest fear is to lose my dog while hunting. This unit eliminates that fear. There are features in this collar I will probably never need to use. The screen is very easy to view even in bad light. I like the vibrate mode on the collar as my dog responds very well to it when activated. I have not and to not intend to use the stimulation mode and have removed the prongs and placed the plastic cover in their place.
Very pleased with the collar and the fine people at Gun Dog Supply.

The screen changes randomly. The e collar buttons change the screen when activated/ pushed.

It works well very easy to work with.

Works great especially while training puppies.

Only problem I have with the system is I think we have to many Garmin collars in our area. We have up to two hundred or more in 10 to 15 mile radius. At times we have trouble with collar linking up with alpha and having problems during the hunt tracking dog. Have any suggestions?

I live in mountainous terrain, and keeping line-of-sight is not possible; however the Garmin TT15 maintained contact with my dog. I was able to track my dog over hills, and deep into ravines. I was quite surprised at how well this GPS performed.

Works as advertised. Nice to track dog when hunting grouse woods.

My husband has trouble reading the screen and wishes it were larger. He is slightly vision-impaired.