Another Openbox Question (1 Viewer)

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FaT Air

HOA Free Zone
Feb 27, 2010
6,668
914
97W 48N
I have the same prob with the DMX c band lnbf. It seems this lnbf is really picky about the voltage for vertical polarity. I have tried with and without a disqc inline, no change. I left my "Cheap 'n' Dirty" fix inline that I used to correct the same prob first experienced with the Pansat 9200. I just mounted a couple of chassis "F" connectors on a aluminum box and soldered the diode to the center pins. band side of diode to dish/lnbf. Receiver lnb input -->]-- 1n4001 diode --- lnbf. I don't experience any sig degradation.
 
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Copykat

SatelliteGuys Family
Apr 16, 2010
91
0
NE US
I do a lot of blindscanning with my C-Band dish, so most of the time I run the 5-28-2010 firmware that has polarity selection. I noticed awhile ago that some satellites may have polarity issues I saved a satellite list with a satellite set to one polarity and then loaded the list with newer firmware. There is no option to select the polarity, so you are stuck at what it was set at with the earlier firmware. Especially troublesome if you are trying to power an LNBF. Setting a satellite to AUTO polarity with the old firmware before saving and loading the channel list into the newer firmware fixes the problem.

BTW, the 5-28 firmware was the last to include polarity settings.
 

Mr Tony

SatelliteGuys Pro
Supporting Founder
Nov 17, 2003
295
43
Mankato, MN
interesting. I know the SSO works fine with the GeosatPro C2 LNB

I left my "Cheap 'n' Dirty" fix inline
heh sounds like what I had to do.....put a receiver inline so the vertical side would work....hmmm....wonder if I change the LNB LO on it like shultz did...Mine is KU though
 

Pixl

Senior Member
Pub Member / Supporter
Feb 27, 2010
1,902
66
Traverse City, Michigan
interesting. I know the SSO works fine with the GeosatPro C2 LNB

Yes, works fine with my GKC001 too which I think is the same as the Geo, just different branding.

Fat Air I like your diode approach to this. It addresses the same thought I had of too high vert voltage. The diode would reduce it by 0.7 volts, might be what is going on with Icebergs solution of using a switch in line.
 

shultz

SatelliteGuys Pro
Jul 13, 2006
217
2
87W 40N
Ok, so this is what i did now. I took the switch off the 12'er, pluged the cable out of the Gbox into the old Fortec setting in the closet, looped out of the Fortec and into the SSO and it works great! NO dups, gets both "H" and "V", tracks the arc fine. Im a happy camper now and this will get me by till the weather gets better to get outside and switch the lnbf's. Just seems strange the 241 won't work on the SSO but will on every thing else i have.
 
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