[MAMS] 5.7 GHz rainscatter question

[Dr. Gerald N. Johnson]

On 8/8/2012 12:12 PM, Danny Pease wrote:
> I see I can get a couple of boards and devices from a seller on Ebay for 1
> watt out for a very reasonable price, but I was pretty sure that 1 watt and
> the 18 inch dish I have would be a little on the weak side plus having to
> split the single output of the transverter into separate TX and RX for the
> amplifier and preamp, meaning a decent pair of relays or PIN diode switches.
> I am getting a little antsy to try this stuff out and I am pretty sure the
> few milliwatts I have available won't get me too many QSO's from around
> here.
>
> Danny NG9R
> EN40la
>
>
Bigger dishes aren't difficult to acquire. Look for a 30" at a farm that 
used to get data from DTN on KU satellite. Or Channel Master dishes are 
sold on line at reasonable prices (though any price is infinitely 
greater than free).

Can the Tx and Rx lines be separated inside the transverter, and their 
combining relay moved outside? The only case of them being inherently 
combined thatt I can think of is seeing the mixer directly which means 
poor receiver sensitivity and minuscule Tx power.

Sometimes suitable relays can be had at reasonable prices like from 
Hangar 18 Surplus. The may take 28 volts though.

73, Jerry, K0CQ