R: [TowerTalk] Coaxial Switch

[Maurizio Panicara]

Mike,

thanks for the idea but the Spinner switch I've is probably activated by a
step relay or a motor. I suppose it's not impossible the pin to be energized
could be one (or a specific group) for the wanted port combinations and the
positions similarly identified by an hi or low state (or again a
combination) of some pins in the DB9 connector.
I'd like to avoid giving some 24V were I shouldn't, and, before doing it as
the extreme resource I definitely prefer to wait and see if a schematic
diagram can be available.


73,
Mauri I4JMY
-----Messaggio Originale-----
Da: Mike Nash, ND6A <nd6a@arrl.net>
A: Maurizio Panicara <i4jmy@iol.it>
Data invio: luned́ 6 settembre 1999 17.11
Oggetto: Re: [TowerTalk] Coaxial Switch


> Why not build a little box with 4 LED's on it so that when you apply power
> to one antenna port the appropriate LED will light.
> This would require knowing which wires go to which one and dropping
> resistors for each LED, but really a simple circuit.
> Mike...ND6A
>
>








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