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thing I forgot, and this is just a shot in the dark, it's possible the signal
polarity may be different between the series 3 and series 4 birds - try
reversing the polarity on the LNB either by voltage or changing the slab
orientation in the LNB itself
21/03/2020 at 10:08, Paul Gulliver via Groups.Io <paulg1953@...
to hear you are receiving C band data from 4F3,
I don't know of any continuous c-band signals on 3F5 - that would make life
too easy, the 2 most active frequencies for me are 1533.81 and 1534.36 both
10500bps burst. There are other frequencies that have 10500bps burst but the
data is infrequent so I tend not to bother monitoring them.
laptop I use is not very powerful, if I try to monitor too many frequencies
it tends to crash.
these frequencies are approximate, exact values depending on your LNB
oscillator frequency - with temperature drift these frequencies can change up
to 30KHz during the day especially if we have a chilly night followed by a
warm day - I think my LNB must be particularly bad for temperature
If all else fails, make a small helix along theses lines https://uhf-satcom.com/satellite-reception/l-band
and swap it for the LNB and align the dish with L band signals (aero on 1545.0
to 1545.3MHz for 3F5) theses are fairly strong and continuous so it makes
Hope this info helps
20/03/2020 at 22:00, Fred Albertson <albertso@...
I wrote a while ago that I was going to put together a
You provided a lot of valuable info that I
considered as I developed
It took a while, but
I'm "on-the-air" with a 120cm Prime Focus dish
and C1W-PLL LNB.
I have no problems getting data from the 4F3 satellite, but I can't
the signals from the 3F5 bird.
Do you have a solid
ACARS downlink frequency from 3F5 that I can search for
position the antenna?
Here are some frequencies I have found on
the 4F3. All are listed as the translated
1531.125 - 1200 data
1534.975 - 10500 burst - Good ACARS
1535.200 - 10500 burst
1535.800 to 820 - 1200