View Single Post
Old 10-12-2011, 08:59 AM
DaveInDenver's Avatar
DaveInDenver DaveInDenver is online now
Hard Core 4+
Join Date: Jun 2006
Location: Larimer County
Posts: 7,865

There is nothing special about CB feedlines. Cable length makes no difference if the antenna is tuned and presents a 50 ohm feedpoint impedance.

The 9' foot thing would be if the feedline is acting like an impedance transformer, which is a special case if the antenna is 1/2w.l. and does not have a matching network. A 1/4w.l. of 50 ohm coax would transform a very high impedance as seen on a 1/2w.l. antenna.

However, a good antenna would be built with one (e.g. the Larsen antennas) and the cable length should be the length between your radio and the antenna with enough slack to lay out of the way.

What antenna are you using?
'91 Pickup - Imelda / '08 Tacoma TRD - Donna
'09 Kawasaki KLR650
'98 Rhygin Juke SS / '12 Gunnar Rockhound 29 / '16 REEB Dikyelous

"Our task must be to free ourselves from this prison by widening our circle of compassion to embrace all living creatures and the whole of nature in its beauty. Nobody is able to achieve this completely, but the striving for such achievement is in itself a part of the liberation and a foundation for inner security. " --Albert Einstein
Reply With Quote