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photoman76

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Reply with quote  #1 
I can't lock this one:

SES 1
3840 V 30000


SES 1.jpg 



midwestmac

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Reply with quote  #2 
I'm not sure but would be curious to see what a up linker on this forum thinks.
Because one day I saw signal on my spectrum analyzer pop up and immediately
Tried to lock, and the constellation looked like that
Then about a minute later the up linker Musta gave it some power and the signal went from one spot to four.
( Qpsk) I cuaght the signal before they had set up things in their truck, I guess?
That's my best quess anyway of what those are or could be.
photoman76

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Reply with quote  #3 
Definitely something odd about the signal.
Crazyscan takes over 30 seconds to even start the constellation diagram.
majortom

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Reply with quote  #4 
I can't say for sure, not an uplinker or satellite engineer. But on those signals where everything shows up in one quadrant, they look like something a guy might transmit to keep an amplifier happy while there is no real traffic.
Have seen signals like that in various places for years.

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Perfect 10 7.5' mesh Chapparal C/Ku Co-Rotor feed, Norsat 8115 CBAND, Norsat 4106A Ku Thomson Saginaw Actuator, Vbox positioner,
Home Brew Polarotor683 Servo circuit. Openbox S9, Prof7500, v4l-updatelee linux drivers installed.
majortom

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Reply with quote  #5 
here is another example idler, on 103w H Ku... with no fec lock.

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Click image for larger version - Name: 11850_h_5600.png, Views: 10, Size: 64.59 KB 

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Perfect 10 7.5' mesh Chapparal C/Ku Co-Rotor feed, Norsat 8115 CBAND, Norsat 4106A Ku Thomson Saginaw Actuator, Vbox positioner,
Home Brew Polarotor683 Servo circuit. Openbox S9, Prof7500, v4l-updatelee linux drivers installed.

photoman76

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Reply with quote  #6 
Quote:
Originally Posted by majortom
here is another example idler, on 103w H Ku... with no fec lock.


I can lock that one.  Sometimes it locks as 16APSK and sometimes as 32APSK.

SES3 11849H 16APSK.jpg 

SES3 11849H 32APSK.jpg 

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Fellow Members, your posts are welcome here! Do not worry about posting everything perfect. Different receivers and LNB's will give you different Frequencies and Symbol Rates. Some set top boxes, PCI cards and USB receivers, Do Not Require all of the same information that others may need. It is not Required to post everything that others may need to tune in a feed. It is just most important to share the find. We can always adjust the Frequency and Symbol Rates and try the various Modulations and FEC's on our own receivers until we get a lock and then give a polite reply with what works for your receiver, as that information might help others as well. We all appreciate the efforts and energy of the Posters!

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