[DSP-10] Problems with Serial Shift Registers.

[Chuck E. Swedblom]

Hi Courtney,

The San Bernardino Microwave Society received permission to
operate the 40M telescope for EME, so I built up two transverters
for 1296MHz and 10GHz that we have been using for the past
couple months.  The 1296MHz system worked out great and we
have had many contacts there.  But, on 10GHz we have had problems
getting a high power (25W or better) power amplifier, so have been
running 2 Watts. 

My objective was to map the Moon on 10GHz to find the best locations
for two-way contacts.  Last month I was able to get the first mapping 
results
and have found three locations that are suitable for EME.  Even with 
the low power I was able to get 28dB S/N returns.  At that time the
winds came up too high for operations and we had to shut down.

We have two possible leads on higher powered PA's and hope to get
them back on in the near future.  With the low power we would be limited
to EME with only the larger stations.  When we first came on the air,
we were running 30W with a TWT and tried to make contact with one
station, but was unsuccessful and the TWT failed due to high humidity.
With that power we were getting 40dB S/N on our own returns.

Since the 40 Meter telescope puts a spot on the Moon of about 216
miles in diameter, it is necessary to locate the best reflectors if we
are
gong to be successful on EME.

Thank  you for your inquiry

Chuck   WA6EXV


On Fri, 17 Mar 2006 16:53:01 -0800 Courtney Duncan
<cbduncan at earthlink.net> writes:
> Chuck,
> 
> What are you listening to at 10 GHz at OVRO?  Do you work there (or 
> 
> Caltech) or know somebody?
> 
> I was once out there on a GPS field experiment (CASA UNO, early 
> 1988) 
> and enjoyed touring the grounds.
> 
> Courtney
> 
> n5bf/6, still at JPL...
> 
> P.S.  What is the grid square at OVRO / Lone Pine?  DM06?
>