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-   -   Question - Coax Cable - What's Between Your Antenna and Radio ? (https://www.radiobanter.com/shortwave/124414-re-question-coax-cable-whats-between-your-antenna-radio.html)

Eric F. Richards September 1st 07 06:32 AM

Question - Coax Cable - What's Between Your Antenna and Radio ?
 
Ross Archer wrote:

On Aug 30, 10:15 pm, RHF wrote:
QUESTION FOR ONE AND ALL :

Coax Cable - What's Between Your Antenna and Radio ?http://groups.yahoo.com/group/Shortw.../message/14610

Low Loss type Coax Cable ?

RG58 Coax Cable ?

RG8 Coax Cable?

RG6 Quad-Shield Coax Cable ?

WHY - Cost ? Performance ? Value ?

hope this helps - iane ~ RHF
.
.
. .


I'm using Belden 9913F7 (this is 9913 with a foam dialectric instead
of the generic 9913's air dialectric). I'm using it because I bought
a good bit of it for UHF/VHF work where its low loss is really
important.As an aside, avoid air dialectric cable because it can act
as a "wick" and conduct water and moisture via capillary action if
exposed to the elements and not adequtely waterproofed.

A very experienced ham swears by LMR-400, either ultraflex or
standard. The ultraflex is a lot less stiff and can turn corners a
lot better and that's what he uses.

Ladder line or window line is worth a look too, and it can be
relatively cheap. :)

http://www.vk1od.net/LOLL/index.htm

An interesting hybrid approach would be to use ladder or window line
from the antenna feedpoint to the outside entry point, then transition
to a 6:1 or 4:1 balun and coax for the final run into the house. :)

Wonder if anyone has tried this instead of coax, and how their success
was?

The main reason I'm using coax is the antenna does both TX and RX
duty, and I didn't want to deal with the possibility of "RF in the
shack" issues.


Hey, Ross,

Long time no read!

I'm using LMR-400 (standard) for a V/UHF run and have fallen back to
RG-213 for HF runs. I had used 9913UF for the longer HF run, but the
on-paper performance didn't last when the cable was exposed to intense
UV.

--
Eric F. Richards

"Nature abhors a vacuum tube." -- Myron Glass,
often attributed to J. R. Pierce, Bell Labs, c. 1940


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