[NLRS] DEM 8 watt 10 gig amps

mike Kana aa9il at sbcglobal.net
Sun Mar 26 21:49:29 EST 2006


Greetings

My plan to integrate the 8 watt amp with the
2w transverter will use the following scheme:
A DEMI sequencer is activated by a manual T/R switch.
The sequencer switches the relay, and T/R voltage
THEN
closes the Key and Microphone PTT switch path with
sequence relay 4.
This way, the IF rig can not be keyed until all
the previous states have been resolved.
Return the T/R switch to rcv to switch back the
sequencer.
I have used this method for my portable 10g rig
and 24ghz rig and it works quite well.
I did have a question if a regular sma relay could
handle 8 watts and it appears so.  I plan to 
mount the transverter, amp, and preamp at the
rear feed of a 2ft MA/COM dish.

73 de AA9IL
Mike


--- W0ZQ at aol.com wrote:

> 
> 
> Has anyone incorporated their 8 watt DEM 10 GHz amp
> with their 2 watt DEM  
> system ?   If so, I'm particularity interested if
> you used any  sequencing and 
> how you handled the PTT control between the
> transverter, amp, and  your IF rig. 
>     
>  
> It seem that if the IF rig keys the transverter (as
> it normally does), it  
> presents some problems with trying to sequencing the
> RF relay (with the current  
> design).   Seems that there should be an easier, and
> better,  way.
> 
> 73, Jon
> W0ZQ
> 
> 
> Come and join us here in Bloomington,  Minnesota,
> home of the Mall of 
> America, July 27 & 28, 2006 for the 40th  annual
> Central States VHF Society 
> Conference hosted once again by the  NLRS.
>  
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