Recent content by altman

I would aim at 2G being in the middle, but what I usually end up doing is making a list with the channels I want to receive, and maximise those, not caring much at the theoretical maximum I usually have a minimum around lunch hour, and all channels including HD after dinner I'm shopping for a...

a small nudge awarded me with BBCs, C4 and a few others, I'll try to check snr, but HD is nonexixtant, and lots of SD still missing. Guess I'll have to move further north this time, I'm running out of space in the yard for bigger dishes.

its a good render of the situation, one of the best I've seen, but I think the blue line ( the second null ) should be 100Km further East, right over the Algarve, and Lisbon. that's the one I'm not getting: 11023 H my sathunter is able to get dvbS2 but not the 8psk modulation so tuning for...

that can't be entirely correct, as I am watching almost all of it, without interruptions right on that blue line ;) 1.8m marrafa, quad invacom, crappy receiver

the "different frequency bands" theory sounds plausible EDIT: I couldn't find a beacon on any of the astra birds, got a lock on Eutelsats and a few others, it would be a perfect measuring method as the beacons are generated on the bird, so they are only affected by the return path. anybody has...

if it can be done with a dm500s I have two spares, only thing that is missing is the big dish that I'm still hunting down 6db of snr from 10906V isn't enough for proper measurement :(

and he has a multiswitch system, I think measurements only matter on the LNB outputs, 3db drop on a multiswitch might be caused by someone plugging a damaged receiver on another output. Camping, on one of your photos, you showed the old 1.8m still installed, it could be used as a comparison, to...

not really: http://satellites-xml.org/signal-graphs/28E-SNR-table.php 10758V how much has it dropped on your installation?

just did a SDR scan from 1.5 to 2.1Ghz searching for the beacons.. but found other thing instead: my signal path is utter crap, TPs after 1.7Ghz dive into the noise the skystar receiver confirms it all the other cable in the house is brand new 28db/100m premium cable, except the computer drop...

is there a pilot tone, like a unmodulated carrier, with a known frequency being transmitted on the KU band somewhere? in the analogue days I retuned a few DROs by "ear" using a few known good lnbs for reference, now in the digital age, if they are off by more than what the tuners AFC can...

hexah: with PF, you adjust a bit, get out of the way then measure ;) but yes its a pain, lost count of how many times the SH200 fell because of that. I've been studying feedhorn theory, and have to agree with Huevos, considering the same frequency band, bore is what changes the beamwidth (F/D)...

not really, just think about it, 2.3m has 0.41 F/D, to make a 3.1 you just bolt the petals, by extending the parabola, the F/D must decrease until a matched feedhorn is used, the dish behaves as a 2.3m with a shield against edge noise, no more gain, or marginal at best its the same problem I'm...

Have you ringed Famaval so that they can advise on the correct feedhorn for their antenna? they make one for 0.41 http://www.famaval.pt/pt/contactos.html I think I have two old feedhorns that might work there, send me a PM with your location in Lisbon, I go there from time to time.

thank you for the readings this lnb is offset, a really old one, I think it works because the FD of the dish is 0.43 and Televes offsets were 0.5 instead of the more common 0.6~7 it has also been cherry picked, I have 6 more of the same model, all bad performers on 60cm televes offset, average...

much better now, the list, head still hurts a bit ;) 12110H 16db (2A south) 11307V 10db (e28 super) 12480v 6.5db (north beam) 10906v 6.3db (uk spot)