From: glenne@sr.hp.com (Glenn Elmore)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: 10GHz counter
Date: 7 Apr 1995 15:15:31 GMT
Organization: Hewlett Packard Sonoma County
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Komljanec, Tony: OS_TDO (komljant@tor1a.ic.gc.CA) wrote:

: For others experimenting with the SOLFAN units...  try refrigerating the
: Gunn source for five minutes.  When you pull it out, hook it to a Spec'A
: and watch it gooooooooooooo!  I found 5 minutes in the cooler = 15 MHz of
: drift.  It is like a train....  you wait for it at the crossing and watch
: it go by.  Any suggestions for stabilizing the thing?

  Well, it might be of use to put the drift in context first.  The
numbers don't appear to be quite so awful that way.  15 MHz for 20-30
degrees C change is on the order of what many microwave oscillators do.
YIG tuned oscillators are often in this vicinity.  Also, 15 MHz drift at
10500 MHz is comparable to 6 KHz drift at 4 MHz.  Would your
non-temperature compensated VFO design for a 75 meter rig be all that
much more stable if you put it into the cooler for the same length of
time?  Perhaps a bit but probably not a lot.

  Still, for medium to narrowband use, 15 MHz is a lot.  Why don't you
consider phaselocking the Solfan if you want it not to drift?  I show
all the necessary circuits to make a 10 GHz SSB station in Feb/Jun/Oct
1988 Ham Radio Magazine.  The microwave oscillator used is none other
than a phaselocked Solfan source with bias push tuning.  Also shown is
the resultant phase noise.  It's not as good as the best one can do but
it's very acceptable even for very narrowband work; SSB and CW.  This is
the same hardware architecture I used when we originally pushed the long
standing 200+ mile 10 GHz over-land record out to 400+ miles.



Glenn Elmore n6gn

amateur IP:	glenn@SantaRosa.ampr.org
Internet:	glenne@sr.hp.com 

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From: eus.eusmge@memo.ericsson.se (Mike KD6PKJ)
Newsgroups: rec.radio.amateur.equipment
Subject: Re: 10 ghz + dish source cheap
Date: Fri, 2 Jun 1995 09:14:57
Organization: Ericsson, Inc.
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Glenn Johnson writes:

>Anyone interested in SHF/10 Ghz + bands should look into 
>this source for dishes:

>MCM Electronics
>1-800-543-4330

>Equipment:

>DSS and SMC 18" metal dishes $13.15 
>LNB's, mounting parts, etc !!!

>Ran across this in their catalog, thought someone here
>could use it!

>Glenn


I called and they said they sell replacement parts for existing systems.  You 
would need a specific part number or system number to place an order.
 
I asked for a catalog to do this, and the (very nice) receptionist took my 
info and said I would recieve one shortly.

Hopes this helps others out, and thanks for the tip Glenn!