[TowerTalk] AC operated relays for ant switching

[dan hearn]

I have a home built ant sw using relays w 110 a.c. coils. They work fine and do
not overheat with 24 v.d.c. on the coils. This, of course is much safer than
using the 110 a.c. I use  a back connected diode across each coil to keep the
inductive h.v. spike on disconnect from damaging the selector sw. Haven't found
bypassing necessary if the diodes are slow speed power types like 1N4001
series. Good Luck, Dan, N5AR

zeitler@ibm.net wrote:

> Gents,
> I have some ceramic insulated DPDT relays that I would like to use for
> remote antenna switching. They have 120vac coils. Will this be a problem RF
> wise? Any interference? Any precautions? Bypassing?
>
> Comments welcomed.
>
> Lane Zeitler
> Ku7i
>
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