Odd signal results from Zinwell- AV-COM combination

RimaNTSS

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My Satellite Setup
Some SAT-related hardware.
My Location
N-E from Riga
here is my result ....with a little over 0.3 out
Well, to fix that you need to lift LNB little bit (perhaps several mm) to have it exactly in the focus. To be able to do that, something like that (not necessary same) can be done IMG_20170629_201244 (Large).jpg IMG_20170629_201305 (Large).jpg But, as you say , what you have may be acceptable for C-band reception, and possible gain could be marginal.
 

nelson_b

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My Satellite Setup
Strong 4375 driving a 2.4 m Channel Master dual focus offset + Invcom Quad C120 K/U l.n.b. + BSC 421 and Zinwell C band l.n.b.,s - DR HD F15 - TM5302 - Octagon SX88+Optima - GT Media V7 - HD receivers. + other dishes currently in use - Antique 3.0 m Prodelin P.F. - Channel Master 1.8 m offset - Channel Master. 1.2 m.
My Location
North West Yorkshire - near Lancashire & Cumbria borders.
Well, to fix that you need to lift LNB little bit (perhaps several mm) to have it exactly in the focus. To be able to do that, something like that (not necessary same) can be done View attachment 108283 View attachment 108284 But, as you say , what you have may be acceptable for C-band reception, and possible gain could be marginal.

That,s very nice .. :) i may need something like that with fine adjustment when i start playing with k/u band without the sub- reflector ...

been playing with C band on the 2.4 tonight .. i think motorised l.n.b in - and out adjustment as well as skew adjustment would be needed to get the most out of this AV-COM arrangement on this dish ... it is good - but very tricky on weak signals, and is seeming to need quite different in/out settings or even different l.n.b,s between different transponders when in in circular mode ... its driving me mad trying to make sense of it :eek:
 
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