Thread: Circular to linear and all that jazz...

Ok smart guys heres one for ya. I put ads on craigslist often for people wanting old dishes cleared off their property. I get amazing responses :-) Last week i went and picked up an old super dish. I already have a super dish, its one of the fiberglass channel master built ones. This one is a newer metal one with different LNBs. The linear LNB that was for 105 i believe can be taken apart and rotated to move the wave guide and from what i understand makes it a circular lnb. Looking closely at the white hockey puck on the top there are 2 lines about 45 degrees apart. one says LP and the other CP, which i assume mean linear and circular. So i went ahead and rotated it and threw it on my superdish that was at 97 and moved it over to 119/118.8 to try to see if i could get the congrats your on 118 screen. No luck, it was a really nice weekend out so i wanted to play with the dish in the yard to see if i could get some sun but i dont know where my problem is. Im sure i rotated it correctly and all but im not sure if i have it pointed wrong or if the problem is in my receiver, its also a DP LNB and i went over that last time with iceberg about how to use the bandstacked lnbs with my receiver so i dont think thats the problem. Has anyone done anything like this and have some input or should i just give up? I guess its possible that i dont have it aimed right but i am wondering if when i aim it, will it show the the sat ID in the menu?

I sent you a PM (The site has a lot of good information, but they are a hack site ) .

I was looking for similar information last week, I wanted to modify a LNB to scan 118 for any FTA channels, but I ran out of time and never started the project.
So I am trying to weight the benefits, is it worth the effort to modify an LNB for one channel saying "You are pointing at...."

I decided to try a modification, I tried the Fortec Star Universal LNB with two tennis ball can lids cut to the right size and I put it into the "feedhorn" of the LNB. (I think the lid is to thin so a few more layers might help, or a better dielectric plate).

About 150 channels scanned in, only two which were FTA . The signal level for the two were at the border line for reception, 66% and 70% on my Coolsat 6000.

11804 V/R 20000
VPID - 5154
APID - 5155
PCR - 5154

Is the "Congratulations! You have a DISH system pointed at 118 W.L."

EDIT: Attached (118.8 W Vertical / Right) spectrum scans. Top image is the LNB without the dielectric plate, bottom image is the same LNB with the dielectric plate.

The dielectric plate makes a big difference in the spectrum scan!

Yup your right only 2, I got it playing around after work. Look at this RIG setup! hehe

My problem turned out being with out those peices of wood, i wasnt in the focal point :-)

Nice job! What size dish did you uses? and what was your signal quality like (high, average, low) ?