[Moon-net] 28 MHz signal splitter

[Leif Asbrink]

Hi Lance and all,

I would just use a T-connector. A modest increase
of SWR would probably not have any adverse effect.

Only if you have a carefully designed system that
has the lowest possible gain to keep the noise floor
at the optimum level without any attenuator, the
additional loss of not power matching would be 
something to worry about. 

Connect one receiver to the T-connector and check
the level of a stable signal (or the noise floor.)
Then connect the second receiver. If you can accept
the amount by which the signal drops, you are
probably ok.

The IM3 characteristics of your 28MHz converter 
output might even improve compared to the IM3
it would have if you used an attenuator to reduce
gain by the same amount. IM3 could also degrade
but you will notice if it is a problem.....


73

Leif / SM5BSZ


> 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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