I’m a bit puzzled by the need for lots of isolation in such a switch. I
understand why it’s needed between different transceivers, but how much is
truly needed between antennas to the *same* transceiver? How much isolation
exists between the antennas themselves, regardless of the switch? As an
example, how much isolation is there between my 20 m tribander and my dipole
for 17 m, all on the same mast? It’s got to be much less that across the ports
of the RCS-4, doesn’t it?
Kim N5OP
"People that make music together cannot be enemies, at least as long as the
music lasts." -- Paul Hindemith
> On Oct 23, 2019, at 9:20 PM, Jim Brown <jim@audiosystemsgroup.com> wrote:
>
> On 10/23/2019 7:12 PM, David Gilbert wrote:
>> I'd build my own remote switch with input and output relays for each channel
>> before I'd buy the RCS-4.
>
> The 4O3A switching units are excellent. I measured the isolation of the most
> expensive, the 8x2 Antenna Genius, at better than 100 dB! The lower cost 6x2
> measured better than 75dB. The Array Solutions Six Pak came in at about 55 dB.
>
> 73, Jim K9YC
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