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Thread: New LNBF - only one wire?
- 03-04-2010 11:18 AM #1
New LNBF - only one wire?
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I just bought a new LNBF (to mount on my new 1.8m dish) from a dealer that used to be listed at the top of this page. To my surprise, the only connector on the thing is the F connector for the signal. There are no terminals for skew or polarization. What have I done? My old ten footer required lots of wires. The actuator only requires 4 wires this time, but it's this LNBF that has me stumped.
- 03-04-2010 11:18 AM # ADS
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- 03-04-2010 11:25 AM #2
The LNBF switches polarity via the coax cable voltage. When 13 volts is supplied it's V and 18V it's H.
- 03-04-2010 11:31 AM #3
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Okay, that sounds good, but does my ancient 4DTV unit know that? Also, I remember something about autoskew. How does that fit in with this newer LNBF?
And thanks for your help.
- 03-04-2010 11:37 AM #4
In the 4DTV receiver setup menu there is a selection for LNB types. LNBFs work fine. I'm presently running 2 receivers with them. The skew is determined by the rotation when mounting it in the scalar ring.
What brand, model LNBF is it? Is it a fixed dish or motorized?
- 03-04-2010 11:51 AM #5
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It's an Eagle Aspen C-Band Stacked LNBF, with scalar ring included. Man, you're making this sound too easy. I went through flames back in Las Vegas with my old rig. I'm actually looking forward to this new install. I bought the polar mount antenna and a slightly oversized (24") actuator.
- 03-04-2010 11:56 AM #6
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Can the 4DTV receiver process a stacked signal? If not, and if this LNBF only puts out a stacked signal, than an external destacker will have to be added to the installation.
- 03-04-2010 11:56 AM #7
I hate to be the one to say this but, the 4DTV receiver is not compatible with bandstacked LO frequency of the LNBF. It will require 5150 mhz not 5750 mhz.
It will however work fine with most FTA receivers.
- 03-04-2010 12:11 PM #8
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No wonder these were on a blowout sale. I'll just toss it on the pile of scrap satellite parts in my garage. Can you tell me what I now need to buy, and from whom?
Thanks.
- 03-04-2010 02:38 PM #9
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I bought the wrong LNBF
I just found out from some of the members on the C-band forum that I bought the wrong LNBF to hook up to my 4DTV. I bought the Eagle Aspen C-Band Stacked LNBF with a scalar ring. It was a blowout sale... they were going for $29.00 as I recall. Now I find out that the 4DTV will not work with a stacked LNBF. So I was wondering if someone from this forum can tell me which LNBF to buy. I need a good one, because my dish is so small (6 ft).
Thanks.
- 03-05-2010 11:48 AM #10
A GEOSATpro C1 LNBF or a DMX241C should work nicely for 4DTV. Just make sure any model you purchase states the LO frequency as 5150 mhz.

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