On 7/19/22 3:04 PM, Joe Subich, W4TV wrote:
On 2022-07-19 4:34 PM, Lee Hiers wrote:
>
Does anyone know of a commercial stack-matching box (for 2 antennas)
that will send the unselected antenna to another port?
MicroHAM stack Switch would do that for two or three antennas. AFAIK,
the product has been discontinued.
I believe the Array Solutions Stack Match will do that *with* the
optional external relay. However, since I don't use those products
I suggest contacting the manufacturer for details.
73,
... Joe, W4TV
On 2022-07-19 4:34 PM, Lee Hiers wrote:
Hi all...
Does anyone know of a commercial stack-matching box (for 2 antennas)
that
will send the unselected antenna to another port? As in: I'm using the
high antenna on radio A, and that makes the low antenna available for
use
on Radio B. And vice-versa.
I envision two antenna connections and a stack output and an alternative
output...something along those lines.
I thought I'd seen a commercial product that did this, but I can't
find it
now. I'm sure something could be rigged up using external relays
(and I'd
love to hear from anyone who's done that as well), but I would like to
evaluate other options.
Thanks,
Some other things to think about are "port to port isolation" and "fail
safe" .
You want to structure the switch matrix (e.g. if using SPDT switches) so
that the radios are always isolated from eachother.
If all you have is 2 antennas and 2 radios, what you want is a "transfer
relay" or, in microwave parlance, a "baseball switch", or for DC motors,
a "reversing switch". It's a DPDT set up to swap paths.
THey're available surplus for moderate powers (and, I suppose high
powers), but they're designed so that you never inadvertently have
output from Radio A going into Radio B.
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