I want to be able to switch a piece of #14 house wire onto the far
end of a sloper wire I have for 75 M phone so I can operate lower in
the band. I'm thinking of adding a relay in a weather-resistant box
at the sloper's end insulator and continue with the extension wire
beyond that.
The voltage at the end of the sloping wire is probably too high for
the contact to coil "withstand" of any reasonable 12V relay. You
would probably be better served to use a relay to switch a coil in
series with the sloping wire at the feed point on your tower. Most
any "automotive" or other open frame relay should work in that
application.
73,
... Joe, W4TV
On 11/23/2017 12:17 PM, Gene Smar wrote:
TT:
I want to be able to switch a piece of #14 house wire onto the far end
of a sloper wire I have for 75 M phone so I can operate lower in the band.
I'm thinking of adding a relay in a weather-resistant box at the sloper's
end insulator and continue with the extension wire beyond that.
FYI: The sloper wire runs from the 50 foot point on my tower to my
house roof where it is tied to an end insulator and thence to a PVC vent
pipe via a bungee cord. The wire runs through tree limbs, hence my need for
a flexible connection. I'm thinking I can mount the relay/box near the end
insulator and extend the additional wire further across the roof. I'm
thinking I can run 15 +/- VDC to it from the station supply in the shack via
RG-58 coax up and across the roof to the relay box.
My question to this august group: What relay (and supplier) would you
recommend for the job?
In the alternative, can you point me to a good source of info on
designing traps for said application? The trap would not require any DC for
switching but might take more "cypherin' " to get working.
Many thanks and Happy Thanksgiving to all y'all.
73 de
Gene Smar AD3F
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