I also have several of these, they are OK for what they are, "a negative gain antenna." That is correct, the main problem I have with this antenna is the False advertising on the package, obviously written by the Marketing department, not the Engineering department (assuming RS even has an Engineering department any more). The package says "6db gain over a stock 800 MHz antenna..." There is no mention of the reference "dbd" or "dbi" nor as to WHAT stock antenna is being referenced.Radio Shack 800 MHz rubber duck antenna is what you want.
800MHz Scanner Antenna : Scanner Antennas | RadioShack.com
I've used my BCD396XT for a while now but I am thinking it might be time to try something other then the stock antenna. Any thoughts?