Thread: Dual Polarity for Muzak dish / flange?

Originally Posted by Bill_KY

Are these available on E-bay? How much do they cost?

I don't think so... I got mine from an old commercial installation and had remove it off the building's roof.

Originally Posted by Larobpra

Take the four screws out of the adapter on the Zinwell LNB and use the 4 holes to mate up to the 8 hole LNB. Should do the trick. You will probably find 8 holes in the Zinwell too.

Only (4) holes in the Zinwell... but otherwise you're on track (see my prior post).

I thought it might work.

Originally Posted by cruzin

...I have the other type muzak dishes with the 3 arms that come out and a clamp that holds a lnb. I was able to modify it for other types of lnbs.

That looks just like a Prodelin 1.2m I have. I would be most grateful if you would post a closeup pic or two of how you modified the original feed bracket to host the 40mm dia. LNB that was (teasingly) shown!

Originally Posted by RnR

That looks just like a Prodelin 1.2m I have. I would be most grateful if you would post a closeup pic or two of how you modified the original feed bracket to host the 40mm dia. LNB that was (teasingly) shown!

I think at that time I just used some straping with holes in it and put bolts through the holes in the strap and through the holes in the original holders bottom. I do not use that lnb any longer and have since went to this setup with 2 lnbs for 97 and 101.

Originally Posted by RnR

Ya know... why don't the installers EVER skew their commercial dishes?? I've looked at several of these installs and they are oriented perfectly vertical no matter what bird they're looking at. Dish and Direct have to because of multiple birds scattered across the arc - but these single bird dishes like to stand tall and pretty, I guess. They must lose some efficiency along the way doing that...

The dish itself may not be skewable (usually the elliptical ones are), but if the dish isn't skewed, the LNB certainly must be if the dish is aimed at a satellite that isn't near true south.

Well, here we are!

97w is stable and active on the dish (which I guess is actually classified as an 84cm) - both polarities.

Getting started, SatMex6 was the first satellite I discovered with my cheapo sat finder and a bit later, I headed back east and ended up one slot past 97.0w, then finally settled in on G19 when I got around to doing blind scans on a decent receiver. My old favorite... a Coship 3188c, is presently suffering from leaky power supply capacitors and is out of commission for the moment. But a born again Coolsat 5000 did just fine as a stand-in and will be relied upon over the next day or two as I see just what effect the rectangular opening in that WR75 "transition" collar (aka. polarizer) has on signals of both H & V polarities.

So... for now the peaking remains to be performed but I'm happy that the mechanics of the feed coupler didn't throw too big of a monkey wrench in the works.