Astra 2 and BADR 26 on a Monoblock in S.France

[rodscha]

The market offers 3°lnbs to get 19 and 16,or 16 & 13(hotbird),but how do I get 28.2° and 26° ?
Has anyone tried? the interest is,26 has the MBC channels with lots of English language stuff,FTA bbc world,and TV5_maghreb,so a nice addition to Astra 2 FTA fare
any suggestion?

 

[BlindFaith]

Can you get the channels on Astra 2E, 2F at 28E with 80cm in your place?

 

[sonnetpete]

When I first began experimenting with my multisat setup, I tried to get both. I suppose with two Inverto Multiconnect LNB's it might be possible to achieve the small seperation but even using two narrow feed LNB's I couldn't. Given a larger dish (as a general rule of thumb the larger the dish the wider the space between LNB's) it might be possible but it would be fiddly to do. I'd put up another dish for 7W. I get the MBC SD mux on a 1M Gibertini here even in moderate rain...

 

[rodscha]

Hello Blindfaith,thank you for the quick answer!
I am in Carcassonne ,Languedoc,100ks S-East of Toulouse
I get the UK beam only in clear weather with a 75-ishcm dish & no-name lnb
Pan Euro full blast/26° quite same strength as UK beam
i am considering a fixed 1m dish with a monoblock 3°lnb for astra 2 and badr 26°
and wondering,going up from 75cm to 1m would improve reception by...what factor?

 

[BlindFaith]

going from 75cm to 100cm would be a theoretical gain of 2,5dB (20*log(100/75)). That's quite substantial. And as @sonnetpete wrote, the 3° spacing of your monoblock relates to a smaller dish (read the specs of the monoblock). With a bigger dish it will be less than 3°. But you could also take 2 dielectric feed single LNBs

 

[Tururu]

En general, la separacion del LNB doble/monoblock es....
Los monoblock de 3º ==> antenas de 60cm.
Los monoblock de 6º ==> antenas de 80cm.
Para antenas mas grandes, el LNB monoblock no funciona bien.
Mejor sueltos.

Un monoblock de 6º en antena de 100cm, no mejora el rendimiento al perderse parte de la señal.
Una imagen mejor que 1000 palabras, vemos que la señal no entra al 100% por la boca del monoblock 6º.
-------------
In general, the separation of the double/monoblock LNB is ....
The 3º monoblock ==> 60cm antenna.
The 6º monoblock ==> 80cm antenna.
For larger antennas, the monoblock LNB malfunctioned.
Best loose.

A monoblock 6º in antenna 100cm, does not improve performance on loss of signal.
A picture is better than 1000 words, we see that the signal does not go to 100% by the mouth of the monoblock 6º.

 

[sonnetpete]

What I'm thinking is that at the moment, on a Triax TD88 I have mounted a standard LNB for 28E and a slimline LNB for 23.5E. I've mounted them together with a pipe clamp (see photo). That's a 4.5 degree seperation and you can see they are touching. If you were using standard LNB mountings you couldn't get them close enough to achieve the 3 degrees you would need for 28/26. I'm sure with a lot of experimenting, adjusting, swearing and patience it could be done but it would take you ages.

 

[Tururu]

Triax-Hirschmann 80cms????
Triax TD78 Dimensions (cm): 70x78
Triax TD88 Dimensions (cm): 85x95
http://www.triax.co.uk/upload/product_guide.0208_001.pdf

Triax TD78..28E--26E--23.5E.....no.
Triax TD88..28E--26E--23.5E.....no
100cm.........28E--26E--23.5E.....OK.

Instalacion de/ installation J-puig, LNB/soporte Inverto.