You might want to check the solder connection beneath the BNC
connector. It involves opening up the case, but it isn't too difficult
as long as you keep track of the tiny screws and different components.
A friend of mine had the performance of his JRC take a serious
downgrade, and he opened up the case and found a split solder
connection beneath the BNC connector, with a quick re-solder all was
fixed. Shortly after I had the exact problem and solution with my JRC.
It now works well!

Mike Reyes

wrote:
All,
I have been using a JRC JHP-500 handheld radio for field
communications
and have been a bit disappointed with it's performance. It has a
standard 6" flex antenna. When I am in the air and someone tries to
talk with me using the handheld, the transmission always sounds very
weak, even if I am flying right over the top of them at the airport.
For all I know, the radio is fine and the real culprit may simply be
the antenna.
Any suggestions?
Any suggestions on other (stock) handheld transceivers that have
worked
well for others that won't break the bank?