Trying to Find professional services for C Band LNB maintenance in Northern Cal

[buckstucky]

Does anyone know of any professional services that will service an LNB and or point a 12 foot dish to its proper satellite. I have used guys on my site and I think they have it pointed at Galaxy 31 but when I look at the output of the LNB on a spectrum analyzer I dont get the nice guassian hump Im used to seeing, and its sporadic and noisy and the DVB S300 receiver cannot lock or pick up a signal. I specifically bought a XR-3 to analyze the signal and I see a signal but its sporadic and jumps around between -40 and -60 dB (not steady) . Any help of getting someone who knows what they are doing would be appreciated.

 

[cyberham]

...and I think they have it pointed at Galaxy 31...

I'm sure somebody in California will have some advice for you. But I'm curious what you are keen on receiving from Galaxy 31 with a 12-footer?

 

[FTA4PA]

Does anyone know of any professional services that will service an LNB and or point a 12 foot dish to its proper satellite. I have used guys on my site and I think they have it pointed at Galaxy 31 but when I look at the output of the LNB on a spectrum analyzer I dont get the nice guassian hump Im used to seeing, and its sporadic and noisy and the DVB S300 receiver cannot lock or pick up a signal. I specifically bought a XR-3 to analyze the signal and I see a signal but its sporadic and jumps around between -40 and -60 dB (not steady) . Any help of getting someone who knows what they are doing would be appreciated.

Welcome to Satellite Guys! The members here may be able to help you sort this out but more info would be needed. You said you think you may be pointed at 121W. Have you done a blind scan to verify which channels, if any, are received?


If you can't or don't want to figure it out on your own you might be able to find an installer by searching here.

Satellite System Installer Referral - www.FTAinstall.com

 

[buckstucky]

Welcome to Satellite Guys! The members here may be able to help you sort this out but more info would be needed. You said you think you may be pointed at 121W. Have you done a blind scan to verify which channels, if any, are received?


If you can't or don't want to figure it out on your own you might be able to find an installer by searching here.

Thanks for the quick reply! Im pretty sure they have it pointed correctly. Its just that the signal is awfully noisy and there is no lock on the signal so no channels or data can be identified.

 

[buckstucky]

Thanks for the quick reply! Im pretty sure they have it pointed correctly. Its just that the signal is awfully noisy and there is no lock on the signal so no channels or data can be identified.

 

[buckstucky]

I'm sure somebody in California will have some advice for you. But I'm curious what you are keen on receiving from Galaxy 31 with a 12-footer?

I work for an organization that looks at weather patterns. This is weather data from NOAA National Weather Service

 

[Titanium]

Where are you located?

I assume that your team was repointing the dish to Galaxy 31 from a different satellite?

If so, what satellite was it on, Galaxy 28? Did they adjust the feedhorn skew?

FYI... From my location near Auburn, CA, the G28 satellite has a -33.2 feed skew and G31 has 0 (zero) feed skew. failure to rotate the skew angle would result in extremely poor SNR and/or no lock and decode.

 

[FTA4PA]

Thanks for the quick reply! Im pretty sure they have it pointed correctly. Its just that the signal is awfully noisy and there is no lock on the signal so no channels or data can be identified.

Perhaps 5G interference?

 

[buckstucky]

Perhaps 5G interference?

Wow I hope not... naw I think its something with the LNB, but They wont let me get on the cherry picker so I have to depend on others to do this . :<

 

[buckstucky]

Where are you located?

I assume that your team was repointing the dish to Galaxy 31 from a different satellite?

If so, what satellite was it on, Galaxy 28? Did they adjust the feedhorn skew?

FYI... From my location near Auburn, CA, the G28 satellite has a -33.2 feed skew and G31 has 0 (zero) feed skew. failure to rotate the skew angle would result in extremely poor SNR and/or no lock and decode.

Thanks for the tip!! I will let the guys know about his . I had no idea (I have to read up on this) . Im in Livermore

 

[Titanium]

Thanks for the tip!! I will let the guys know about his . I had no idea (I have to read up on this) . Im in Livermore

Any update?

 

[cyberham]

I work for an organization that looks at weather patterns. This is weather data from NOAA National Weather Service

Using a 12-foot dish should be easy for this task. Note attached that talks about an amateur radio operator who made his own 5-foot dish for the same purpose. Courtesy of July/2024 issue of QST magazine from ARRL.

 

[telstar_1]

Is there any reason he didn't just buy a 5' dish?

 

[cyberham]

Is there any reason he didn't just buy a 5' dish?

No idea. Maybe cost. But I'd like to think, and I admire, some get personal satisfaction from making their own technical stuff especially when it comes to antennas. Why? Just to see if they can do it.

 

[mr3p]

I admire him for the the DIY dish and seems like a fun project. It appears this was first done ~30 years ago. I guess being an aerospace engineer helps. https://www.worldradiohistory.com/A...73-magazine-1995/73-magazine-07-july-1995.pdf

 

[cyberham]

I admire him for the the DIY dish and seems like a fun project. It appears this was first done ~30 years ago.... https://www.worldradiohistory.com/A...73-magazine-1995/73-magazine-07-july-1995.pdf

You found a good link. The ads are even more interesting than the articles. Imagine an amateur radio store (Barry's) in downtown Manhattan!