Looking for C-Band actuator rubber booth

Advertisements

monz

Well-Known SatelliteGuys Member
Original poster
Dec 8, 2012
28
3
Repentigny, Québec
I there.
I have this old Superjack XL model QBRL302440A, 36 inches C-band actuator and I'm searching for the upper rubber booth (the one where the arm goes inside one another) because the grease is washed out by rain and makes it out of order, especially in winter.
Actuator parts are very difficult to find.
Thanks in advance for helping me.
00.webp
 
I there.
I have this old Superjack XL model QBRL302440A, 36 inches C-band actuator and I'm searching for the upper rubber booth (the one where the arm goes inside one another) because the grease is washed out by rain and makes it out of order, especially in winter.
Actuator parts are very difficult to find.
Thanks in advance for helping me.
View attachment 192237
Tek2000 used to sell those, but I don't know if they still do.
 
  • Like
Reactions: FTA4PA
monz i have that same exact dish like the one in picture and i have a question? what is the fd on that dish thanks.
 
Have you by chance taken measurements and checked out the Fernco rubber couplings at the hardware store?
Just a hint.
 
monz i am not hijacking your post, but i have the similar dish that i play with and i cannot seams to get it going because my focus length, distance between lnbf and the depth of the dish that i measure is not working right, i try many different positions with my lnbf and its the same. The lnbf works, but cannot get it going with that dish you have in picture thanks
 
monz i am not hijacking your post, but i have the similar dish that i play with and i cannot seams to get it going because my focus length, distance between lnbf and the depth of the dish that i measure is not working right, i try many different positions with my lnbf and its the same. The lnbf works, but cannot get it going with that dish you have in picture thanks
It's EASY to calculate the F/D ratio for your prime focus dish. Measure the diameter of the dish from edge to edge in centimeters. Then, put a flat board or straight on its edge 2x6 all the way across it from rim to rim. Then measure the depth in centimeters in the middle of the dish (deepest part) from the bottom edge of the 2x6.

Plug those values in this calculator, and hit Calculate: F/D Ratio - Satellite Calculators | SatLex®

For instance, lets take a 10ft dish that's 304.8 centimeters in diameter. Let's also say it's 20 inches deep which equals 50.8 centimeters. That dish would be 0.375 F/D ratio.
 
  • Like
Reactions: phlatwound
Wow! I think that phlatwound has answered your question.
I'm far from being an expert like him, but I can tell you that it's an 8-foot dish I got from the roof of a motel near my place, so it was beforehand perfectly fitted.
I swapped out the LNB for one of this type.

Also, if it can help, it is located approximately 1 inch from its tip and 33 inches from the base of the antenna.
1.webp
2.webp
3.webp
 
  • Like
Reactions: primestar31
Mister Controversial here.
If the dish is still true and not sagging, etc from age. AND was made as a true parabolic from the factory.
The calculations "should" get you in the ballpark.
But. Like me and me bleedin' dish. Toss the finite calculations out the door.
A 4-poster scalar/lnb mount gives zero "wiggle room" for scalar adjustment.
You are able to slide the LNBF in and out and rotate it to get the maximum signal.
So instead of getting confused why this and that measurement doesn't add up to the calcs. Try moving the LNBF position.
Of course you'll want to make sure that the LNBF is aimed dead knutz at the center of the dish and acquire a signal.
In other words. Try to not be off aim of a sat. by a little and aim the LNBF off of the dish center to compensate.

and oh....four-five bucks for a fernco reducer. superjack main tube, 2" O.D.? extension tube, not sure but we could check.
no shipping, no waiting. probably a cut or two with a utility knife.
 

YTA - Nostalgia TV

Auction of the Upper C-Band Frequencies