|[AMRadio] Looking for antenna multi-coupler|
JRusgrove at comcast.net
Fri Jan 19 15:34:11 EST 2007
Assuming it is terminated properly, a two way power splitter such as the PSC-2-1 has 3 dB loss in
the two way split plus another approximately 0.5 dB loss for a total loss to each output of about
3.5 dB. For the four way like the PSC-4-1, the loss to each output will be about 6.5 dB. This loss
may not be noticeable on the lower frequency bands. If the loss is objectionable a preamplifier
ahead of the splitter can be used.
----- Original Message -----
From: "James M. Walker" <chejmw at acsu.buffalo.edu>
To: "Discussion of AM Radio in the Amateur Service" <amradio at mailman.qth.net>
Sent: Friday, January 19, 2007 2:45 PM
Subject: Re: [AMRadio] Looking for antenna multi-coupler
> Ah actually,
> 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...
> > Brett
> > N2DTS
> >> -----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
> >> affecting
> >> Things...
> >> 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.
> >> Thanks!
> >> Cheers
> >> John
> >> KB6SCO
> >> DM09fg
> >> PS: Naturally - I just sold the nice one I had lying around,
> >> last year at
> >> a swap meet.... D'OH!
> >> ______________________________________________________________
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