[TowerTalk] Fw: Feeding single band HF yagis 500+ ft from the shack
Jim Brown
jim at audiosystemsgroup.com
Mon May 16 22:51:10 EDT 2022
Hi Dave,
I tend to agree with Wes, but I would first want to know how you will be
using them. Do you plan SO2R operation, which requires a run for each,
or only one at a time, with a single run switched at the tower?
I also saw "towers" plural. Are they relatively close to each other, or
widespread? I'd try to run 7/8-in to a central point where it can be
switched to something smaller that goes up the tower(s). Most of my
antennas above 30M are in 7/8-in, but I've managed to find all of it
used or reel ends.
A couple of short runs (~150 ft total) to monobanders are mostly in
half-wavelengths of 1/2-in CATV hard line.
73, Jim K9YC
On 5/16/2022 3:39 PM, dave arruzza via TowerTalk wrote:
> To all...
> I have a new QTH and the towers for the monoband yagis will be 500-600 feet away from the shack.
> I remember reading about utilizing 2 transformers and open wire line to minimize loss.
> One transformer at the tower base to transform the yagi coax to open wire.
> A run of open wire line to another transformer at the shack end.
> Then coax to the shack.
> I know that I can buy hardline to accomplish this but that becomes costly.
> 73 Dave W1CTN / 4
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