[Moon-net] 28 MHz signal splitter

[Edward R. Cole]

Jim,

That's what I did for feeding two 2400 MHz Drake convertors with output of
one preamp...worked fine!  I also combined two preamps on 2m using a pot
for continuous polarity adjustment (each preamp was followed by a
mincircuits 0-180 deg. phase shifter).

But I now have the 2m-eme running only one preamp with a sma relay chosing
either H of V antennas.  Some day I hope to have parallel SDR's to feed
Linrad and recover the polarity in sw.  BTW I will split the output of my
2m preamp to feed both the new DEMI 144/28 + SDR-IQ, and my FT-847 Rx,
simultaneously.  Yep a simple BNC Tee will do it.

Getting real close to QRV on 2m-eme (again).  All antennas and arrays
tested and just need to test the relay box and tywrap a few
cables...hopefully will have 2m array back in the air this weekend (praying
for no wind!).

73's Ed - KL7UW

At 09:42 PM 12/7/2006 -0600, you wrote:
>
>Hi Lance.
>
>Here is the less clumsey answer you were waiting for.
>Do your receivers really have a 50 ohm input?
>I would be very surprised if they did.
>SWR is not a factor in this case.
>Even if SWR did cause additional loss, you said you had
>plenty of gain.
>Just use the T connector and conventient lengths of 50 ohm
>coax to your receivers.
>
>Here is another thought.
>Does one receiver get WAY more signal then it needs?
>Put a series resister in line at the T connector to that receiver.
>The other receiver now gets nearly all the RX signal.
>
>73, Jim Shaffer, WB9UWA.
>
>
>
>----- Original Message ----- 
>From: "Lance Collister" <w7gj at accessoutwest.com>
>To: "'moon-net'" <moon-net at list-serv.davidv.net>
>Sent: Thursday, December 07, 2006 1:13 PM
>Subject: [Moon-net] 28 MHz signal splitter
>
>
>>I am planning to divide the output of my 28 MHz receive converter
>> between my main receiver (TS830S) and a new secondary receiver (SDRIQ).
>> I am planning to do this with a BNC T connector and two 1/4 wavelength
>> long pieces of 75 ohm RG59-U coax.  I seem to have plenty of gain out of
>> my converter for this (I have to use a step attenuator on the converter
>> output now, to prevent from overdriving the receiver) but I wonder if
>> there might be a less clumsy way to do this than what I have been
>> planning.  TNX and 73, Lance
>>
>>
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>> 
>
>
>
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73's,
Ed - KL7UW  
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144-EME: FT-847, mgf-1801/1402, 4xM2-xpol-20, 170w
432-EME: FT-847, mgf-1402, 1x21-ele (18.6 dBi), 60w
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