Summary: My Garmin 660 had quit picking up satellites and rather than send it to Garmin to be repaired (at a cost of $100+) I purchased this antenna. Plugged it in, turned on the 660, works like a charm!
Summary: I was really sureprised, given the other good reviews, to find that not only my c340 didn't register any signal improvements, but also the connector requires quite a bit of sterngth to be plugged into the GPS unit, and the small brass part at the end gets stuck into the GPS when you pull the anteena...
Pros: unobtrusive design
Cons: Connector popped off and hard to plug in Haven't detected any improvements in signal
Summary: My c320 would sometimes take 5 or 10 minutes to acquire satelites, but with this antennae the wait time has been drastically reduced. It finds me in no time flat. I put my gps in a permanent mount, and now I don't have to deal with the difficulty unplugging the antennae unless I'm removing the whole...
Pros: price, signal strength,
Cons: difficult to unplug from gps unit, but getting easier
Summary: This antenna is a great value for the money. I use it to connect to my Garmin i3 in the car and bring it along in the field for use with my Garmin 60c. The antenna will boost my satellite receiver signal by one or two bars.
Pros: Very small and long cord.
Cons: The connector can be a bit hard to push on and pull out.
Summary: I think this antenna has helped my Garmin C320 quite a bit. While the unit itself has a good reception, the antenna helped it a lot in cities with tall buildings and in the woods. At times I used to lose signal downtown, but now I keep it far more often.
Pros: Increases the signal strength of the GPS unit. Allows for faster pickup of satellites.
Cons: At times I have problem with the cord in the door, I feel like rain or something could come in the place where the cord goes.
Summary: Nice way to remotely mount your Garman GPS. I was able to put the C320 in the console below my radio and run the remote antenna to the top of my dash. I hid the antenna under the upper cover of my dashboard. It picks up signal slightly faster over the intergrated antenna.
Summary: This low profile antenna does exactly what it is supposed to do - it increases the reception for your GPS unit. I have been using it on a GPSMAP 76CSx unit for improving the unit's reception while in the car.
Pros: Low price & good performance = excellent value