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Using spectrum analyzer at a comm site.
Posted 04 February 2011 - 12:18 PM
Thanks for the help.
Posted 04 February 2011 - 03:07 PM
There is a Christian TV Network on this bird at freq 12060-horz.
Here is the sight alignment information from your location. This should help.
Address: ewa beach hawaii
Satellite: 97W GALAXY 19 (G-19)
Azimuth (true): 101.4°
Azimuth (magn.): 91.5°
Posted 04 February 2011 - 03:15 PM
Posted 07 February 2011 - 12:08 AM
Posted 07 February 2011 - 09:09 AM
Are you sure the LNB is getting DC powering, either from the spec analyzer or from the satellite receiver? Can you arrange to connect your spec analyzer to a DBS DirecTV or DISH Network LNB downlead so that you can see what a robust RF spectrum looks like?
Edited by AntAltMike, 08 February 2011 - 04:34 PM.
Posted 07 February 2011 - 12:57 PM
Posted 08 February 2011 - 07:24 AM
You may be getting ingress right thru the cable.
If not, it's coming in at L-band, right thru the LNB. You might need a different LNB (something with a better filter on the input, or better shielding.
You might try a few torroids on the RF cable, to see if the L-band interference (from nearby cell and other transmitters) is getting fed back in to the LNB via the cable shield. You'd need to select the torroid's "mix" for L-Band frequencies, though. Call Tech Support at one of the Ferrite makers for their recommendations. (We had a similar problem with a UHF TV channel getting in "the back way" to a microwave receiver. Tech Support was very helpful in selecting the correct torroids. Then, we just ordered them from stock someplace, and got them in a day or two. Wish I could remember the company's name.)
Posted 08 February 2011 - 12:28 PM