[Antennas] Joining Feed Lines

2002年4月21日 08:15:17 -0500

Kevin, no doubt there is some "loss" brought about by reflections at each
joint, but I doubt (gut feel) that it is very serious. If it really
matters, why not put together two lengths of coax joined as you describe
and take a wattmeter and measure the power loss? If it is more than you can
accept, then go for the new cable, preferably one of the newer low-loss
cables aimed at UHF operation.
73/72/oo, George W5YR - the Yellow Rose of Texas 
Fairview, TX 30 mi NE of Dallas in Collin county EM13qe 
Amateur Radio W5YR, in the 56th year and it just keeps getting better!
QRP-L 1373 NETXQRP 6 SOC 262 COG 8 FPQRP 404 TEN-X 11771 I-LINK 11735
Icom IC-756PRO #02121 Kachina 505 DSP #91900556 Icom IC-765 #02437
Kevin Nathan wrote:
>> Hi All,
>> It's been a while since I've dealt with this and I just don't remember the
> answer. I need to move two antennas from a rooftop tripod to my tower.
> They have been fed with approximately 70 feet of RG8 each. One of them is a
> 2 meter/70 centimeter collinear and the other is a six meter three element
> yogi. How much would I lose going through connectors and a barrel which
> would allow me to use RG8 lengths I already have as opposed to the expense
> of new single runs of cable for each.
>> I'm not looking for a debate here, just some consensus as to what I might
> lose before I take a run to the radio store tomorrow.