Something unusual

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Foxcreek
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Something unusual

Post by Foxcreek » Tue Feb 10, 2015 2:30 pm

Hey,

If you aim your dish at 110W you will find a Sat which is backwards !
Using a standard Linear polarized FSS ( 11.7 - 12.2Ghz. ) L.O. 10.75 Ghz. LNB
You'll find a Sat that is transmitting in the BSS band ( 12.2 - 12.7 Ghz. ) but
using Linear polarization. I found this to be rather odd ! It's as if it's hiding behind
Echostar 10 / 11. It's not ITC.

Freq. S/R Pol
12560 20000 H
12662 20000 H
12560 20000 V
12603 20000 V
12662 20000 V

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Costactc
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Re: Something unusual

Post by Costactc » Tue Feb 10, 2015 5:03 pm

Those look like dish network frequencies and sd symbol rates.
10' mesh-24" vonweise actuator-psi x2 lnbf-X2 Premium III-Vu+Zero.
8' solid- esx 241 lnbf(c)-amiko l104 lnbf-24" vonweise actuator-GI HD-X2 Premium-Azbox Ultra.
4' solid- invacom twf-031 lnbf/gibertini c120 feedhorn-stab 1.2hh-TM 5402 M3.

Foxcreek
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Re: Something unusual

Post by Foxcreek » Tue Feb 10, 2015 6:42 pm

costactc,

Did you take a look at these TP's yourself ? I guess Dish has used linear polarization
elsewhere but this is unconventional and why isn't this shown on Lyngsat ?

I guess there must be a lot of isolation between circular and linear polarization to
be able to do this.

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Re: Something unusual

Post by Titanium » Wed Feb 11, 2015 10:24 am

These are not linear signals. You are receiving the Dish Network circular polarity transponders on a linear polarity LNBF. There is an approximate 3dB attenuation when receiving circular with a linear or visa versa.
Titanium - Brian Gohl
He who dies with the most toys... is dead. - unknown
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Foxcreek
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Re: Something unusual

Post by Foxcreek » Wed Feb 11, 2015 12:22 pm

titanium,

That's what I thought at first. I contacted my friend who is a professional uplinker and told him what
I found. He immediately jumped into action with all the engineering equipment available to him
( he's also the head engineer at PBS chan. 8 in Phoenix, AZ.) Looking at the BSS band 12.2 - 12.7 Ghz
with Linear polarization on a spectrum analyzer he was able to verify these TP's.

Also the LNB that I'm using is 2 LNB's in one unit with circular polarization for 12.2 -12.7Ghz and
Linear polarization for 11.7 -12.2 Ghz. with 2 separate L.O.'s 11250 / 10750 I F's for both are
950 - 1450 Mhz. The outputs are separate and I have a 22khz switch where I can select either
output. When I select the BSS band ( circular ) I can't see them. However when I select FSS ( Linear )
they appear with good strength / quality. Another thing....... the receiver I'm using ( openbox S10 )
is QPSK the TP's on Echostar 10 / 11 @ 110W are 8PSK turbo so I can't see them anyway. So I'm 100%
sure their not Echostar 10 /11 @ 110W that I'm seeing !

Foxcreek

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Costactc
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Re: Something unusual

Post by Costactc » Wed Feb 11, 2015 4:33 pm

I used to scan in circular tp with a linear lnbf on Echostar 9 in the past but I haven't attempted it in years.
10' mesh-24" vonweise actuator-psi x2 lnbf-X2 Premium III-Vu+Zero.
8' solid- esx 241 lnbf(c)-amiko l104 lnbf-24" vonweise actuator-GI HD-X2 Premium-Azbox Ultra.
4' solid- invacom twf-031 lnbf/gibertini c120 feedhorn-stab 1.2hh-TM 5402 M3.

elko
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Re: Something unusual

Post by elko » Wed Feb 11, 2015 7:42 pm

12603 R 20000

NIT: 110.0W 12.603 GHz RHCP 20000 7/8 QPSK, DVB-S

PMT PID 16 (0x0010) - Network
PMT PID 33 (0x0021) - Program 7634 WHAM
PMT PID 33 (0x0021) - Program 7635 WROC
PMT PID 33 (0x0021) - Program 7636 WHEC
PMT PID 33 (0x0021) - Program 7637 WUHF
PMT PID 33 (0x0021) - Program 7640 WXXI
PMT PID 33 (0x0021) - Program 9125 WKBW
PMT PID 33 (0x0021) - Program 9126 WIVB
PMT PID 33 (0x0021) - Program 9127 WGRZ
PMT PID 33 (0x0021) - Program 9128 WUTV
PMT PID 33 (0x0021) - Program 9129 WNYO
PMT PID 33 (0x0021) - Program 9131 WNED
PMT PID 33 (0x0021) - Program 9132 WNLO
PMT PID 33 (0x0021) - Program 9133 WNYB
PMT PID 33 (0x0021) - Program 9134 WPXJ
PMT PID 33 (0x0021) - Program 9135 WBBZ

They appear to be locals.

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Re: Something unusual

Post by elko » Wed Feb 11, 2015 7:45 pm

12662 R 20000

NIT: 110.0W 12.516 GHz RHCP 20000 7/8 QPSK, DVB-S

PMT PID 16 (0x0010) - Network
PMT PID 33 (0x0021) - Program 130
PMT PID 33 (0x0021) - Program 159
PMT PID 33 (0x0021) - Program 163 VH1CL
PMT PID 33 (0x0021) - Program 231 RFDTV
PMT PID 33 (0x0021) - Program 259
PMT PID 33 (0x0021) - Program 309
PMT PID 33 (0x0021) - Program 321
PMT PID 33 (0x0021) - Program 329
PMT PID 33 (0x0021) - Program 330
PMT PID 33 (0x0021) - Program 347
PMT PID 33 (0x0021) - Program 837
PMT PID 33 (0x0021) - Program 867
PMT PID 33 (0x0021) - Program 4072 LTD2
PMT PID 33 (0x0021) - Program 4630
PMT PID 33 (0x0021) - Program 4687 VH1CL
PMT PID 33 (0x0021) - Program 4694
PMT PID 33 (0x0021) - Program 4764
PMT PID 33 (0x0021) - Program 4813
PMT PID 33 (0x0021) - Program 4864
PMT PID 33 (0x0021) - Program 5871 DISH
PMT PID 33 (0x0021) - Program 5872 DISH
PMT PID 33 (0x0021) - Program 5873 DISH
PMT PID 33 (0x0021) - Program 5874 DISH
PMT PID 33 (0x0021) - Program 5875 DISH
PMT PID 33 (0x0021) - Program 5876 DISH
PMT PID 33 (0x0021) - Program 5877 DISH
PMT PID 33 (0x0021) - Program 5878 DISH
PMT PID 33 (0x0021) - Program 5879 DISH
PMT PID 33 (0x0021) - Program 5880 DISH
PMT PID 33 (0x0021) - Program 5897
PMT PID 33 (0x0021) - Program 36849
PMT PID 33 (0x0021) - Program 36854 DNL10
PMT PID 33 (0x0021) - Program 36855 DNL7
PMT PID 33 (0x0021) - Program 36857 DNL6
PMT PID 33 (0x0021) - Program 36859 DNL3

More dish channels. They are circular polarity.

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Re: Something unusual

Post by elko » Wed Feb 11, 2015 7:48 pm

Your linear LNB is picking them up even if they are circular polarity. Circular polarity is in fact nothing more than two Linear Polarity signals: one H and one V that are 90 degrees out of phase. That is why a linear LNB can pick them up, although there will be a -3dB or -50% signal attenuation since your LNB only tunes the H portion or V portion of the signal.

Foxcreek
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Re: Something unusual

Post by Foxcreek » Wed Feb 11, 2015 9:22 pm

elko,

If these are circular why do I only see them when I have the Linear polarization selected ?

I can't see them at all when I select Circular polarization ! I'm beginning to think that my dish
isn't pointed at Echostar 10 / 11. Perhaps I'm seeing Anik F2 @ 111.1

The freqs are wrong in that case........ This is too weird !

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