Recent content by IanW

Dovercat - your point about your Televes LNB matching your Televes antenna is well made, the feedhorn design should illuminate the antenna surface efficiently without 'seeing' beyond it ideally, to create a reasonable antenna pattern. The old saying 'it's all in the twig' is so true. Good...

Hi Turok, The ITU-R (International Telecommunications Union- Radio) handles all co-ordination of satellite systems, they are a part of the UN, in effect. Only a sovereign nation can make an application or 'filing' for a satellite system, many smaller nations and territories have acted for...

Hey Yasha, I would keep it simple and separate. 2 antennas. 40E - C-Band only. A small (90cm) prime focus mesh (perforated metal reflector) with C-Band circular polarised feed. You can use a conventional linear C-Band LNB and prime-focus linear C-Band feedhorn, then add a Circular > Linear...

Hey Feraza, Spot on. I guess the issue for a DTH (Direct-To-Home) service on C-Band is more about C/NI - the I (Interference) being the limiting element. Interference from; Terrestrial sources on shared bands. Adjacent or other off-axis satellites. But if you choose a robust setting of DVB-S2...

Boni, Spot on. Scintillation, lots of atmosphere, ionosphere. Not to mention ground noise. IanW.

Hi Flexi, OK, I have the scuttlebuck. Officially, Sirius-3 Vertical you're on the 31dBW contour, and Horizontal 34dBW-ish (I'm extrapolating between the 31 and 36 dBW countours). If you bang the numbers into this truly excellent Link Budget Calculator...

Hi Flexi, I think you are in the 'must try harder' area for Sirius-3. I do know someone who ought to have a definative answer, I'll ask. However, Thor-3 should be fine with a 1.8m, I have by sheer coincidence just measured the worst offending transponder (12054 H - trp.18) here (55 miles south...