----- Original Message -----
Subject: Topband: k9ay loop
> is anyone aware of a kit for building this k9ay loop system, other than
> AS. i just can't see
> putting out almost $400 for a relay and an xfmr !
>
> david/wd4kpd
I built from scratch and it was a nice project. I used an old 4 position
RS-232 computer switch enclosure to build the control box in...used three
toggle switches to create a manual operated binary encoded terminating
resistor selector.
Couple of relays and a piece of perf board in a Home Depot (Carlon) plastic
box at the antenna came out just right. Exterior bottom of the box holds
the 5 binding posts, BNC bulkhead and barrier strip for the control cable
wiring.
There are a few sites on the web that outline how to roll you own including
the K9AY page if I remember correctly.
Mine is self supporting with a couple and a half pieces of PVC SC40
pipe....top section is stepped down to reduce it's mass. Didn't glue any of
it so it can be disassembled during the summer months..
Give it a try...not as hard as it might seem...
Cecil Acuff
K5DL
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