Using a diode protects against the possibility of
"seconday failure", by providing isolation between the
two radios. Therefore I would try it first.
George Fritkin, W6GF
--- "Dr. Gerald N. Johnson"
<geraldj@storm.weather.net> wrote:
> On Thu, 2006-09-21 at 17:15 -0700, george fritkin
> wrote:
> > Use a simple diode or gate. 1n4148 or 1n4001 will
> > should do it. Tie diode anode together and this
> gets
> > connected to amp. The individual cathodes get
> > connected the respective transceiver. And you
> will
> > love your ORION
> >
> > --- Rob Santello <Orion@drumon.com> wrote:
>
> When one output is open collector, and the other is
> open contacts,
> wiring them in parallel makes a WIRE OR, and the
> diodes aren't needed as
> far as I can tell. It could be that the 1N4148 will
> have a volt or more
> of drop depending how much current it takes to key
> the amplifier and
> that diode drop may keep it from working right.
> --
> 73, Jerry, K0CQ,
> All content copyright Dr. Gerald N. Johnson,
> electrical engineer
>
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