TROOPER
09-29-2008, 01:45 PM
Background:
The satellites (birds) transmit the signals to us on Transponders (TP's). Each Transponder has its own frequency unique to that bird (AKA Transponder Frequency in Receivers Satellite setup screen). The Transponder frequency can carry a number of TV/Radio channels or other non-TV/Radio Channels, NOTE: Not all TP's are TV/Radio, and do NOT show up as active, on the FTA receiver . With all entertainment birds for each transponder there are 2 polarities, called Vertical and Horizontal, and doubles the TV/Radio channels for each Transponder. The owner or operator of the bird can program which Transponder, channel and polarity that any given TV/Radio channel is on. They make frequent changes to this line-up for various reasons.
Blind Scan: When you blind scan, your receiver locks onto the bird and scans for Transponders, when it finds a Transponder, It puts into the receivers memory, the data for the found Transponder. Then the Receiver using the saved Transponder data, scans each of the saved transponders for the TV/Radio channels. These are the channels that we sort by Station IDentfication number (SID) and know as the channel numbers on our Receivers.
Standard (Auto) Scan: The Receiver does NOT scan for Transponders, it uses a list of Transponders that is in the software that has previously loaded (.bin's). It uses this list of Transponders to scan for the TV/Radio channels.
If the software load has a current list of the Transponders you are OK. If the list is outdated, you may not receive all channels available on that bird, thus a blind scan would be in order, to update the receivers transponders memory.
Why a blind scan is better
Upon receiving my new receiver on 2007/10/19, I loaded it with the current .bin that was dated 7 days ago.
I set it up to receive Bev 82/91 and Dish 110/119.
Then I did the Standard Scan, the results were;
Satellite - TV/Radio; Nimiq2 82W - 72 TV/2 Radio, Nimiq1 91W - 317 TV/47 Radio, Echostar 8,10 110W - 325 TV/4 Radio, Echostar 7 119W - 302 TV/133 Radio
With a Blind Scan, the results were;
Satellite - TV/Radio; Nimiq2 82W - 77 TV/2 Radio, Nimiq1 91W - 335 TV/48 Radio, Echostar 8,10 110W - 333 TV/4 Radio, Echostar 7 119W - 341 TV/160 Radio
For Bev a increase of 24 channels (5%), and Dish increase of 74 Channels (9%)
The satellites (birds) transmit the signals to us on Transponders (TP's). Each Transponder has its own frequency unique to that bird (AKA Transponder Frequency in Receivers Satellite setup screen). The Transponder frequency can carry a number of TV/Radio channels or other non-TV/Radio Channels, NOTE: Not all TP's are TV/Radio, and do NOT show up as active, on the FTA receiver . With all entertainment birds for each transponder there are 2 polarities, called Vertical and Horizontal, and doubles the TV/Radio channels for each Transponder. The owner or operator of the bird can program which Transponder, channel and polarity that any given TV/Radio channel is on. They make frequent changes to this line-up for various reasons.
Blind Scan: When you blind scan, your receiver locks onto the bird and scans for Transponders, when it finds a Transponder, It puts into the receivers memory, the data for the found Transponder. Then the Receiver using the saved Transponder data, scans each of the saved transponders for the TV/Radio channels. These are the channels that we sort by Station IDentfication number (SID) and know as the channel numbers on our Receivers.
Standard (Auto) Scan: The Receiver does NOT scan for Transponders, it uses a list of Transponders that is in the software that has previously loaded (.bin's). It uses this list of Transponders to scan for the TV/Radio channels.
If the software load has a current list of the Transponders you are OK. If the list is outdated, you may not receive all channels available on that bird, thus a blind scan would be in order, to update the receivers transponders memory.
Why a blind scan is better
Upon receiving my new receiver on 2007/10/19, I loaded it with the current .bin that was dated 7 days ago.
I set it up to receive Bev 82/91 and Dish 110/119.
Then I did the Standard Scan, the results were;
Satellite - TV/Radio; Nimiq2 82W - 72 TV/2 Radio, Nimiq1 91W - 317 TV/47 Radio, Echostar 8,10 110W - 325 TV/4 Radio, Echostar 7 119W - 302 TV/133 Radio
With a Blind Scan, the results were;
Satellite - TV/Radio; Nimiq2 82W - 77 TV/2 Radio, Nimiq1 91W - 335 TV/48 Radio, Echostar 8,10 110W - 333 TV/4 Radio, Echostar 7 119W - 341 TV/160 Radio
For Bev a increase of 24 channels (5%), and Dish increase of 74 Channels (9%)