Andrew/cm 184 subreflector

C

ceedjay

Member
Messages
11
My Satellite Setup
Fibo 90,Fibo 120,CM180
My Location
sweden
Hi.

I don't know if this is the right place to post this question but I give it a shot.

I came across a CM 184 antenna without the subreflector. Does anyone know if it possible to buy a subreflector as spare and how much will it cost?


Regards Christian
 
RimaNTSS

RimaNTSS

Super Moderator
Staff member
Messages
4,871
My Satellite Setup
Some SAT-related hardware.
My Location
N-E from Riga
@ceedjay could you show the picture of antenna?
It is possible to use it without subreflector. I am not sure whether it is possible to get original CM subreflector, but you can always find dual-reflector Fibo dish and use it's sub on Channel Master.
 
Channel Hopper

Channel Hopper

Suffering fools, so you don't have to.
Staff member
Messages
28,160
My Satellite Setup
A little less analogue, and a lot more crap.
My Location
UK South
Unless I’m mistaken, the same 1.8 mould is used on all CM dish designs, though a subreflector addition will assist with noise and cross pol issues .
 
RimaNTSS

RimaNTSS

Super Moderator
Staff member
Messages
4,871
My Satellite Setup
Some SAT-related hardware.
My Location
N-E from Riga
Of course, same mould, just connections for feedarms are not directly to the mirror but the back-frame. Just wanted to make sure TS has that dish on hands and we speak about same CM.
 
P

Pipedream

Regular Member
Messages
415
My Satellite Setup
0.9-1.2 & 2.2 precision dishes TM5402 mk3 TM5302 & V8 Golden
My Location
Sheffield
Hi.

I don't know if this is the right place to post this question but I give it a shot.

I came across a CM 184 antenna without the subreflector. Does anyone know if it possible to buy a subreflector as spare and how much will it cost?


Regards Christian
Do you have any pictures of what you are after? If it is the feedhorn, bracket and the rest as posted by Channel Hopper I think I still have it all in the garage.
 
nelson_b

nelson_b

Contributor
Messages
1,660
My Satellite Setup
Strong 4375 driving 1.8 C.M. offset + Inverto Black Ultra twin + BSC 421 and Zinwell C band l.n.b.,s - DR HD F15 - TM5302 and Skybox/Openbox M3 - HD receivers.+ other dishes in use - 2.4 CM offset - Alcoa 1.8 P.F. - C.M. 120.
My Location
north west yorkshire
@ceedjay could you show the picture of antenna?
It is possible to use it without subreflector. I am not sure whether it is possible to get original CM subreflector, but you can always find dual-reflector Fibo dish and use it's sub on Channel Master.
Hi -
Looking online here https://www.anistt.com/downloads/1.8m Channel master patriot.pdf it looks like the subreflector is the same one that is fitted to my 2.4 C.M. .... it would be interesting to try a fibo sub to see how it performed ... at 34 cm the Channel master sub is more or less 10 cm bigger than the fibo sub though ...

I agree that the dish will work very well without a subreflector once the correct l.n.b positioning has been found .. i made up some temporary arms last year - to original 2.4 non sub dish arm lengths - and used a normal Channel master l.n.b holder and inverto black ultra l.n.b ... results were very good overall ... i may make proper arms and return to make more detailed comparisons sometime in the future ..


DSC04725-Optimized.JPG4.jpg
 
RimaNTSS

RimaNTSS

Super Moderator
Staff member
Messages
4,871
My Satellite Setup
Some SAT-related hardware.
My Location
N-E from Riga
Some time ago I was experimenting in fitting Fibo subs on 1.2m CM and also 1.8m Prodelin antennas. Results were quite OK I must say. Actually, I was using not only SUB, but also the feedarm and original Fibo feedhorn, in that way it was possible to minimize numbers of possible installation mistakes.
 

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