[NLRS] Harmonically related microwave frequencies

[Mike King - KM0T]

Scott,

Im sure some of the other guys who have been around longer can comment on 
"why" things are the way they are, and it sounds like a fine idea...however 
I dont think you will find anyone around here to work on those frequencies 
as their equipment wont work there due to IF restrictions and how their 
transverters are set up in terms of bandpass.

Seems to me that their is another "magic" frequency to use as an LO with a 
96 MHz reference that gets you to all the band plan freqs...its 1152 MHz.  I 
believe thats where it all started...but not sure.

73 and GL

Mike - KM0T

----- Original Message ----- 
From: "Scott" <acepilot at bloomer.net>
To: "Chippewa Valley VHF Group" <cvvhf at cvvhf.org>; "NLRS List" 
<nlrs at mailman.qth.net>
Sent: Saturday, November 19, 2005 2:47 PM
Subject: [NLRS] Harmonically related microwave frequencies


>
>
> Question:
>
> Where exactly did the normal calling frequencies on the microwave bands 
> (2304.1, 3456.1, 5760.1, 10368.1) come  from?  Seems to me it is 
> harmonically derived, ie 144 X 3 = 432, etc.
>
> I'm looking at adding bands (have 10368 now).  DEMI transverter kits all 
> come with an external (not part of the transverter board) LO board.  It 
> seems wasteful to have to have 4 LO boards with 4 different crystals to 
> run 4 microwave bands.  If I set up one LO board to run at 1125 MHz (for 
> example), I could get signals (144 MHz IF) at 1269.1, 2394.1, 5769.1 and 
> 10269.1 ... not the traditional frequencies, but still within band edges. 
> Seems I would get more bang for the buck.  In fact if I ordered 3 
> transverter boards with parts only, I could get the fourth for free by not 
> having to pay for 3 LO boards.  I know these wouldn't fall into the ARRL 
> bandplans, but being cheap, I could get on more bands without so much 
> approval from the local war department...
>
> Comments?
>
> -- 
> Scott N0EDV
> http://corbenflyer.tripod.com/
> Gotta Fly or Gonna Die
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