H/V voltage control on C Band MiniBud

[HDTVFanAtic]

I had always assumed that the dual output C Band LNBs that were voltage control for polarization were the same as DBS Ku band where 1 feed could be low voltage for odd and the other high voltage for even transponders.

I am now getting conflicting information that if you use a dual output lnb in C Band that is not the case, that both feeds must be on the same polarity.

Is this correct or is there a confusion factor here?

 

[voomvoom]

Never had a C-band lnbf before, but the dual DBS lnbf you're talking about doesn't have one side for low voltage and the other side for high voltage. The way it works is with a multi-switch. On the multi-switch there is an input for low voltage and another input for high voltage and that's how it works. There's no reason, I know of, why the C-band lnbf won't work the same way with a multi-switch. Of course since I've never had a dual C-band lnbf, I can't verify this, but it's certainly my assumption. You're going to need a multi-switch to make it work.

Al

 

[HDTVFanAtic]

So if you use 2 C Band Receivers and one wants T9 and one wants T10 on the same Bird, how is it accomplished?

 

[mikekohl]

Get a 2 port (orthomode) C-band feedhorn such as those made for Astrotel,
and a C-band LNB on each polarity. Depending upon your receiver's switching requirements, you can connect with a multiswitch, or do something such as
a dedicated power inserter (SPI 14/18 from Pico), and then split each of the resulting two outputs with an HFS-2, making separate independent connections to each receiver. MPEG-2 boxes can simply connect a 2-input DiSEqC switch and select H or V in that manner.

 

[GrumpyGuy]

So if you use 2 C Band Receivers and one wants T9 and one wants T10 on the same Bird, how is it accomplished?

Two coax runs, one from the horizontal LNB and one from the vert would do the trick.