If you would like to have the finest low-loss, light-weight coax cable
for your aircraft radio installations, get Andrew FSJ1-50A Heliax
Superflexible Foam Cable. It's pricier than the RG's, but the
performance is so far superior that your com, VOR, Xpndr, and whatever
will give you range performance like you've never seen. Andrew also has
a matching BNC male connector, the F1PBM. The cable is rated at 6.4kW
peak power, minimum bend radius of 1", and 0.54 oz/ft. Compare that to
RG58 at 0.35oz/ft. It is 0.29" OD, whereas RG58 is o.116" Isolation or
leakage is at least 300dB due to the solid outer jacket, vs 45dB at
best for RG58, and more likely 25dB after being flexed around. Anyone
who uses an RG cable in their aircraft with this stuff available
doesn't really care about good radio rx/tx! Check out their catalog
pages on www.andrew.com .