Hi Marvin, I think we have had the MR350 for two years, it is fantastic (I don't profit in any way from the sales of this product, well I guess I do in a way, its always nice to be able to give someone a heads up on something that really works!). The internal antenna was just a pain for us and signal was dropped on a regular basis, not that it was a horrible problem but it did happen.
Now with the antenna/receiver outside and up top we get a couple to three more satellites and the signal is lost about 95% LESS of the time, I really can't say enough about the product.
What we did learn the hard way is that you really should use the piece of heat shrink tubing over the usb adapter immediately. I did not and the connection at both the laptop and the nema adapter at the 350 went to poop in a very timely manner. I ended up having to solder the connection from the MR350 cable to the adapter and it was a pain, a real pain. So be advised, if you use a usb connector with this prouduct that piece of tubing is supplied for a very good reason...
Now I do also have to mention the Smooth Talker cell booster. This Canadian made product should be required by law to be installed in every motor vehicle. Time and time again it has made the difference in being able to make/receive cell calls and not being able to use the cell phone; and this has happened in both areas near the Canadian border here in the Northeast, to rural areas of Maine, NH, VT, CT, NY, PA down through the hills of TN, NC, SC, everywhere we like to go when we do get to jump in our small rv and hit the road.
Has it saved our or anyones life, not yet!
http://www.smoothtalker.com/
http://www.globalsat.com.tw/eng/prod...l_00000045.htm
Forgot, if you do get a MR350 remember to order the usb adapter cable if you want to connect through a usb port OR make certain that the cable is included, the first time we ordered it was not-though the company made it clear and the second time the cable was included-and do some searching, the price varies ALOT, the last time around we got both the MR350 and the usb cable for about $65usd....
Thanks for a great site