|[AMRadio] Looking for antenna multi-coupler|
James M. Walker
chejmw at acsu.buffalo.edu
Fri Jan 19 14:45:01 EST 2007
there is little loss if done properly. I use the Mimi-circuits labs
PSC4-1, which is from the TCI receiver multicoupler, and the
device gives good throughput, without loss of signal, great isolation
between ports, it is 50 ohms in and out 1 port in 4 out, and easy
to inplement, no power necessary.
Data sheet at
I have about four of the units, and all receivers are connected to
the receive only antenna all the time. Also yes there is a protective
circuit to prevent overloading the receivers.
as usual YMMV
----- Original Message -----
From: "Brett gazdzinski" <brett.gazdzinski at verizonbusiness.com>
To: "'Discussion of AM Radio in the Amateur Service'"
<amradio at mailman.qth.net>
Sent: Friday, January 19, 2007 2:23 PM
Subject: RE: [AMRadio] Looking for antenna multi-coupler
> Are you going to listen to all 5 at once?
> What I do is install a simple rotary switch so I can select
> any receiver, same with transmitters (bigger switch), and its all
> built into a rackmount box with the mod monitor takeoff, muting relays,
> 110vac in to operate the tr relay, etc.
> Any kind of one antenna in to 5 receiver out passive device
> will include LOTS of loss, each receiver would get less then
> 1/5 the signal.
> Any active device would likely cause much more problems than
> its worth with added noise, overload, etc.
> Just my two cents...
>> -----Original Message-----
>> From: amradio-bounces at mailman.qth.net
>> [mailto:amradio-bounces at mailman.qth.net] On Behalf Of John Lawson
>> Sent: Friday, January 19, 2007 2:09 PM
>> To: amradio at mailman.qth.net
>> Cc: r-390 at mailman.qth.net; Johnson at mailman.qth.net
>> Subject: [AMRadio] Looking for antenna multi-coupler
>> Have four, possibly five boatanchor recievers to feed from the same
>> antenna port - looking for a 50-ohm multi-coupler to
>> accomplish this -
>> right now everything is BNC-teed together and of course it's
>> Tube or solid-state, no matter - although a tube-operated
>> device would
>> not interfere with the AM Boatanchor Metaphor of my current station.
>> Connectors can be N, BNC, SO-239, even SMA.
>> PLEASE REPLY DIRECT TO ME, off-list to: jpl15 at panix.com with asking
>> price, including pack/ship, to Northern Nevada (Carson City)
>> zip 89706.
>> PS: Naturally - I just sold the nice one I had lying around,
>> last year at
>> a swap meet.... D'OH!
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