Softcam.key file limitations

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Feralkiwi
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Softcam.key file limitations

Post by Feralkiwi »

I was testing the limits of the softcam.key file.

I made a file with 2400+ lines of BISS code, each one different but for the same channel.

eg;
B 0001 04147:05630:V 000000000000101 ; line 1
B 0001 04147:05630:V 000000000000202 ;
B 0001 04147:05630:V 000000000000303 ;
B 0001 04147:05630:V 000000000000404 ; line 4
----------
B 0001 04147:05630:v 0000000000096B74 ; line 2411
B 0001 04147:05630:v 0000000000096C75 ;
B 0001 04147:05630:V 2016255b02aa22ce ; Real code.
B 0001 04147:05630:v 0000000000096D76 ;
B 0001 04147:05630:v 0000000000096E77 ; line 2414

I then Imported this into the V8 Golden.
The BISS section of the key entry lists only had the first 1000 lines. The other lines were not Imported.
I could add more lines manually. eg 1002+ lines of BISS.
I could add powerVu lines to the softcam.key file in addition to the 1000 BISS lines.
With all the BISS lines having the same SID (0001) and the same Freq / RS / V ( 04147:05630:v) the code was not found unless it was in the first few lines, eg line 4 or 5.

WHY do this???
Just wondered how many lines you could have.
There are 281,474,976,710,656 (256x256x256x256x256x256) different BISS codes possible.
The code is two parts with check sums.
The first 6 digits are hex code and then two digits of check sum and then the same again.
123456xx123456xx The "xx" are the check sums. They are the the last two digits of the sum of the 3 sets of 2 digits, in hex
12 + 34 +56 = 7A (hex).

And yes it is raining outside and I had nothing better to do.

Owen
Dishes; 3x3m, 2.4m and 4.1m, 10+ ku, 2 movers, USARLS. V8 Combo, Pro, V8 Golden, Nova V8Pro2, GTC, Super.V7HDs, Combo and V7s V7Plus Finder, Finder-Meter V8X / UHD V7Pro GT/XCombo. Sats 100.5E to 177W. I'm a Sat hobbyist who helps out.

spok2010
Posts: 103
Joined: Fri Aug 12, 2016 1:15 pm

Re: Softcam.key file limitations

Post by spok2010 »

It's clear to me that, if you want Freesat to work faster, you should have only the keys you need in your softcam. Unfortunetly, my file has keys from satellites that I will never tune in Brazil.

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