nelson_b
Contributor
- Joined
- Jul 27, 2008
- Messages
- 1,965
- Reaction score
- 2,030
- Points
- 113
- Age
- 73
- My Satellite Setup
- Strong 4375 driving a 2.4 m Channel Master dual focus offset + Invcom Quad C120 K/U l.n.b. + BSC 421 and Zinwell C band l.n.b.,s - DR HD F15 - TM5302 - Octagon SX88+Optima - GT Media V7 - HD receivers. + other dishes currently in use - Antique 3.0 m Prodelin P.F. - Channel Master 1.8 m offset - Channel Master. 1.2 m.
- My Location
- North West Yorkshire - near Lancashire & Cumbria borders.
Thanks Nelson, I swapped over the feed arrangement from the Zinwell LNBF in a "non polo pipe" to a Titanium Wimax LNBF without any type of pipe. I had to fit a shorter set of feed support arms to get the Titanium LNBF feed throad aperture closer to the dish and to its correct focal distance.
The LNBF swap over probably got me about 0.4db instantly and then I adjusted the Az/El for the new feed arrangement which nicked a few more fractions of a dB. It was just enough to tip a few of the frequencies persistently just under a lock into the lock zone. The other factor is time of day, most of the frequencies I locked seem to have higher signal levels in the evening.
I might swing the dish back round to 46.0 East now I have changed the feed arrangement to see if I can squeeze any more juice from that satellite? On the other hand, I am tempted to start twizzling about with the polarity skew and the feed/scalar pair distances to see if I can nick a few more fractions of a dB.
Yes - Maybe you can get a little more. ( You have been already spending some time on it re the feed arrangement and arms ) On such weak signals as Paksat every last bit of possible adjustment counts - i think.
Do you think the Titanium Wimax LNBF is much better than the standard one ?. I have a older regular one and to be honest i don,t find it to be especially good on my offset dishes. i found it was good for linear signals in its side / offset position on my 1.8 until i tried a Zinwell - which fully out performed it in that side / offset position.
The best LNBF for me on my offset dishes in a centre focus position - especially for circular, is the BSC 421 - it locks weak signals better than any other LNBF that i,v tried so far. Maybe its just an C.M. offset dish thing :-)