Why go to all that expense of coaxial relays for 30 meters? Why not
just use a simple spst relay to short out the quarter wave loop when
you don't want it? Build the whole thing in a box with connectors for
the feedline, antennas and loop, then power it via the feedline.
At 08:42 AM 4/8/2007, Clint Talmadge wrote:
>I am building a set of Phased verticals for 30M. I was going to
>switch in a quarter wave length of coax using a DPDT coaxial relay,
>to steer the signal 90 degrees (Broad side to End fire). I went
>looking for the appropriate relay and found some (Surplus Sales) but
>the cost was more than I have in the two verticals and the cabling.
>Does anyone have an inexpensive source for one or an idea on how I
>might do it with a "regular" DPDT relay? I have some Potter
>Brumfield that will take the power but how much impedance "bump"
>will that insert and should I worry about it?
>
>
>
>Ideas and suggestion are welcome.
>
>
>
>Clint - W5CPT
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Jim Rhodes K0XU
jim@rhodesend.net
Experience is the thing you have left when everything else is gone.
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