[Milsurplus] A little off topic, satellite TV receivers and image freqs help respectfully requested

[Gregory W. Moore]

GA,All,

Does anyone in the group have any experience with NEW (as opposed to the 
   1970-80 vintage satellite recievers?  Specifically the IF of the LNB, 
the LO and also the IF of the reciever/descrambler.

I have a strong CW signal on 32 (Actually 29.998 Mhz) with an audio 
image on roughly 600Hz intervals, as documented by a spectrogram, using 
Spectrum Lab.  I can't copy the MixW waterfall, as the 'puter which I am 
using for all my radio equipment doesn't have any photo programs with 
screen capture capability.

It not only is effecting my Digital Cable and Digital voice thru 
Comcast, but is S9 on my gud ole ICOM 746PRO.  Had a cable tech out
(one who actually knew something about electronics, after going thru
about 6 doofuses) with his handheld spec analyzer, and he ID'd the sig
coming from my neighbor.  I suspect that this could be wrong, as there 
are at least 8 dishes on my block (row house neighborhood, all the 
houses next to eachother), and most of them are aimed differently.  I 
can ID at least 3 aimed right toward my property.

OK, the 32MHz freq is actually one harmonic, as I have heard the same
CW sig as far down as 6 MHz, and it appears to attenuate above the 
32Mhz.  I have, just to be informative, informed the Friendly Candy 
Company about this, and they are going to send a "sniffer" out to try 
and seriously DF the signal, as with my present antenna configuration, I 
simply don't have HFDF capability without building a couple of loops and 
a sense ant from scratch, as well as the electronics involved.

Now here's some add'l info... I don't know who the satellite service 
provider of the neighbor is, but I do know the neighbor on the other 
side from the suspected source has a 3LNB dish and simply thru a little
dectective work, learned that he has broadband computer uplink capability.

I don't want to look like I have my tinfoil hat ready to don, unless I 
have some more info than I already possess.  Sri guys, I have been 
HF/VHF/UHF all my life (both an electrical and aeronautical engr, but 
spent most of my time in the pointy end as a comml pilot in Flight Test, 
until a closed head injury and venous stasis retinopathy in my left eye 
made the FAA yank my medical, as well they should, considering I have
vertigo in the QTH, and wind up "flying IFR" by using horizontal 
surfaces as a horizon, just like using one's ADI/Gyro horizon to fly IFR 
--hi-- so the training still pays off..)

Any info that would be offered would be greatly appreciated, because I 
do suspect that I am dealing with a real dirty LNB here, and don't want 
to go around pointing fingers at neighbors who have been really great 
about my "antenna farm", and never have complained about any 
interference from this station.

I am going to x-post this msg on my other radio groups in hopes that
someone will have the info I need.  If anyone wants to see the 
spectrogram display, I will put it up on my website, but will wait until
someone actually wants to see it....

73 es tks in advance for any and all info
de Greg "GW" Moore  WA3IVX/NNN0BVN
-- 
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