NSS-7 (22west) Frequencies

PacMan

Hi all,
A question about certain freq on this and some other satellites.
Many are listed as, for example, 3.761 L or R
I have a Palcom FTA box (bought from the excellent satellites.ie site) and wondering what dish etc I would need to pick stations up with these frequencies.
Many thanks
Peter

Greenman

PacMan wrote:

Hi all,
A question about certain freq on this and some other satellites.
Many are listed as, for example, 3.761 L or R
I have a Palcom FTA box (bought from the excellent satellites.ie site) and wondering what dish etc I would need to pick stations up with these frequencies.
Many thanks
Peter

You'll need a 3 meter dish for that, that is the C band where as what you're now getting is on the Ku band. That freq you mentioned is for here.

Hope this of some help!!!

Zaphod

The C-band TPs on 22 West are reasonably high powered. On our own 2.4M, I found the following:
Freq MHz, Signal %, Quality %
3650, 66, 82
3756, 54, 65
3931, 42, 50
4055, 57, 78
4126, 67, 78

So you could easily receive those with a 1.8M dish, which are reasonably common and turn up every so often secondhand. Maybe even a 1.4M would do in ideal conditions. But it would have to be prime focus, because there are no C-band LNBFs available for offset dishes.

As for the LNB itself, most C-band stuff uses mechanical skew control in the feedhorns - handy for changing between linear polarization (H and V) and circular polarization (R and L). But your receiver doesn't support that. So you'd have to get an LNBF with voltage controlled polarity switching (like your Universal LNB). I've one from Astrotel and it works well (C band LNBF 13/18V +/-2.0MHz).
http://www.astroteleurope.com/astrotel_tvro_lnbs.asp
Note that for C-band LNBs, the noise figures are quoted in degrees Kelvin not dB as for Ku-band. So 17K is better than 20K.
When ordering, you can get them to insert a teflon slab (dielectric plate) into the LNBF throat which will allow you to receive circularly polarised signals.
http://www.smw.se/qa/qa5.htm

PacMan

Many thanks for your very detailed replies.
Thanks again

Tony

Are there any interesting channels on these transponders?

Zaphod wrote:

The C-band TPs on 22 West are reasonably high powered. On our own 2.4M, I found the following:
Freq MHz, Signal %, Quality %
3650, 66, 82
3756, 54, 65
3931, 42, 50
4055, 57, 78
4126, 67, 78

Zaphod

Various flavours (flavors?) of CNN (US, International, transatlantic feeds),
http://www.freewebs.com/bealach/html/22_west.html
FTA South American and Arabic channels, and a bunch of encrypted others.