C-band Sats – Part 3: 100.5E AsiaSat 5, 105.5E AsiaSat 7, 113E Palapa D

Continuing on my quest to hunt all the C-band satellites in sight, this post continues the series up from the western horizon to visit AsiaSat 5, AsiaSat 7 and Palapa D.

100.5°E AsiaSat 5

AsiaSat 5 serves direct to home customers and is a fairly well known satellite.

A scan of the whole band shows it uses the standard C-band layout with fairly well-defined transponders. The radar interference is visible especially on the vertical polarity. The BLscan report shows a decent number of lockable active DVB-S/S2 transponders:

TP N: 1
Frequency: 3660.871 Mhz
Symbol rate: 27499 KS
Polarization: Vertical
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -42 dBm
Signal/Noise: 10.4 dB
Carrier width: 37.124 Mhz
BitRate: 38.014 Mbit/s
----------------------------------------
TP N: 2
Frequency: 3679.185 Mhz
Symbol rate: 3599 KS
Polarization: Horizontal
Spectrum: Inverted
Standard/Modulation: DVB-S2/QPSK
FEC: 2/3
RollOff: 0.25
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -46 dBm
Signal/Noise: 10.2 dB
Carrier width: 4.499 Mhz
BitRate: 4.761 Mbit/s
----------------------------------------
TP N: 3
Frequency: 3700.827 Mhz
Symbol rate: 29999 KS
Polarization: Vertical
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 3/4
RollOff: 0.35
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -40 dBm
Signal/Noise: 8.4 dB
Carrier width: 40.499 Mhz
BitRate: 66.868 Mbit/s
----------------------------------------
TP N: 4
Frequency: 3726.920 Mhz
Symbol rate: 6666 KS
Polarization: Vertical
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 3/4
RollOff: 0.20
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -44 dBm
Signal/Noise: 8.2 dB
Carrier width: 7.999 Mhz
BitRate: 14.859 Mbit/s
----------------------------------------
TP N: 5
Frequency: 3760.908 Mhz
Symbol rate: 27499 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -41 dBm
Signal/Noise: 9.1 dB
Carrier width: 37.124 Mhz
BitRate: 38.014 Mbit/s
----------------------------------------
TP N: 6
Frequency: 3785.169 Mhz
Symbol rate: 3254 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -45 dBm
Signal/Noise: 6.3 dB
Carrier width: 4.394 Mhz
BitRate: 4.500 Mbit/s
----------------------------------------
TP N: 7
Frequency: 3820.806 Mhz
Symbol rate: 27497 KS
Polarization: Vertical
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -40 dBm
Signal/Noise: 8.7 dB
Carrier width: 37.121 Mhz
BitRate: 38.011 Mbit/s
----------------------------------------
TP N: 8
Frequency: 3840.906 Mhz
Symbol rate: 29719 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 5/6
RollOff: 0.20
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -40 dBm
Signal/Noise: 9.2 dB
Carrier width: 35.663 Mhz
BitRate: 73.673 Mbit/s
----------------------------------------
TP N: 9
Frequency: 4000.930 Mhz
Symbol rate: 28125 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -30 dBm
Signal/Noise: 8.1 dB
Carrier width: 37.968 Mhz
BitRate: 38.879 Mbit/s
----------------------------------------
TP N: 10
Frequency: 4020.914 Mhz
Symbol rate: 28095 KS
Polarization: Vertical
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 3/4
RollOff: 0.35
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -31 dBm
Signal/Noise: 7.6 dB
Carrier width: 37.929 Mhz
BitRate: 62.624 Mbit/s
----------------------------------------
TP N: 11
Frequency: 4040.865 Mhz
Symbol rate: 29719 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 5/6
RollOff: 0.35
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -31 dBm
Signal/Noise: 9.0 dB
Carrier width: 40.121 Mhz
BitRate: 73.673 Mbit/s
----------------------------------------
TP N: 12
Frequency: 4114.449 Mhz
Symbol rate: 18399 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 2/3
RollOff: 0.25
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -40 dBm
Signal/Noise: 8.3 dB
Carrier width: 22.999 Mhz
BitRate: 36.448 Mbit/s
----------------------------------------
TP N: 13
Frequency: 4132.493 Mhz
Symbol rate: 10587 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S2/QPSK
FEC: 2/3
RollOff: 0.20
Pilot: off
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -41 dBm
Signal/Noise: 9.2 dB
Carrier width: 12.705 Mhz
BitRate: 14.007 Mbit/s
----------------------------------------
Total Scan Time = 1707.445s

As usual, I try to tune into each of them and all the other known frequencies from the online listings. Because I got a bit lazy, for whole families of encrypted services, I started using * to denote “and others with the same prefix”.

Of the FTA services available, there’s not that many interesting ones, but at least there’s BBC World. Despite being within the coverage area, some of the transponders were visible but unlockable. This is probably due to the uplink itself, as where a transponder (e.g. commonly of 27Mhz, 36Mhz, 54Mhz, 72Mhz width) is shared with a number of carriers, the powers allowed from each of the carriers are controlled carefully to avoid the transponder from saturating, intermodulating or potentially getting damaged. Some uplink stations don’t have enough power or gain to fully saturate even a transponder that’s not fully used (e.g. satellite feed uplink trucks, VSAT terminals) which results in a reduced SNR. So while other carriers on the satellite may lock fine, that is no guarantee that the carrier you are interested in will lock fine as well.

Interesting Signals

A full swept spectrum of horizontal (top) and vertical (bottom) polarities. Nothing particularly special in terms of signals was identified, although some of the services seem to have taken transponder bandwidth use quite to the limit.

Beacons

At the high end of the C-band spectrum, three beacons were identified that were of horizontal polarity (upper), mostly disappearing in the vertical (lower). Frequencies are approximately:

  • 4197.451913Mhz (H, modulated, single subcarrier)
  • 4198.951163Mhz (H, modulated, dual subcarrier)
  • 4199.950913Mhz (H, modulated, dual subcarrier)

The spacing of the first two is about 1.5Mhz, and the last two is about 1Mhz, which seems quite deliberate.

The beacon at 4197.45Mhz seems to have a single narrow subcarrier at 48khz (PSK? narrow FSK?).

The beacon at 4198.95Mhz seems to have two wide PSK/FSK subcarriers, one at about 48khz, and the other at around 72khz.

The beacon at 4199.95Mhz has two subcarriers as well, it seems. The inner one is a narrow one at 16khz, with the outer being a wider FSK/PSK at 48khz. I wonder if the inner one is actually intended, or a byproduct of the LNB/analyzer/receiver/transmitter in use.

A few more beacons were found towards the lower end of the band, but their nature is so different that I’m not sure that they are beacons. I’ve tried to receive them as best as I can, but some of them are so weak that they could be products of mixing or neighboring satellites (possibly).

This was received at 3635.930376Mhz on the vertical polarity. The carrier seems to be phase modulated in some way, as are the subcarriers at around 28khz and 48khz. The subcarriers appear narrow, could be PSK or even FM of sorts. But there is a decent amount of intermodulation (it seems).

This one is another mystery. The carrier frequency is a bit weak in amplitude, at a frequency of 3747.452544Mhz on the vertical polarity. The subcarrier is at 48khz, but it’s extremely narrow – maybe it’s not even modulated.

This one was at 3754.921913Mhz on the vertical polarity. The subcarriers are very narrow at 32khz and 64khz, which implies the upper one may be a harmonic product.

This was received at 3755.91886Mhz in the vertical polarity, and seems to be a CW tone at first, but there are noise sidebands on both sides which suggest maybe the uplinking device has some residual noise that’s been repeated through, or maybe it’s actually modulated as some crazy modes designed to evade bandwidth limitations in the past have relied on hiding data in weaker sidebands.

This is pretty weak too, but it seems there’s at least one modulated beacon to the right. The one in the middle could be an unmodulated CW beacon … but it’s a bit hard to tell since the noise is pretty high compared to the signal.

Zooming up in detail, it’s at 3754.957189Mhz in the Horizontal, appears to have a narrow subcarrier at 32khz.

105.5°E AsiaSat 7

AsiaSat 7 is also another very well-known satellite that provides direct-to-home broadcasting and is the next one up the belt that serves Sydney, Australia.

According to the CrazyScan output, the radar interference has reduced as the elevation angle increases, further confirming the terrestrial nature of the interference. Some new interference at the high end has been spotted, but otherwise the result is a clean spectrum with many wide carriers. BLScan produced a very meaty report as a result.

TP N: 1
Frequency: 3645.463 Mhz
Symbol rate: 7119 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 3/4
RollOff: 0.20
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -45 dBm
Signal/Noise: 7.2 dB
Carrier width: 8.543 Mhz
BitRate: 15.868 Mbit/s
----------------------------------------
TP N: 2
Frequency: 3652.981 Mhz
Symbol rate: 14099 KS
Polarization: Vertical
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -45 dBm
Signal/Noise: 9.9 dB
Carrier width: 19.034 Mhz
BitRate: 19.491 Mbit/s
----------------------------------------
TP N: 3
Frequency: 3664.955 Mhz
Symbol rate: 2814 KS
Polarization: Vertical
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -46 dBm
Signal/Noise: 7.7 dB
Carrier width: 3.800 Mhz
BitRate: 3.891 Mbit/s
----------------------------------------
TP N: 4
Frequency: 3689.910 Mhz
Symbol rate: 14999 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 5/6
RollOff: 0.20
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -42 dBm
Signal/Noise: 11.4 dB
Carrier width: 17.999 Mhz
BitRate: 37.183 Mbit/s
----------------------------------------
TP N: 5
Frequency: 3690.364 Mhz
Symbol rate: 11393 KS
Polarization: Vertical
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -46 dBm
Signal/Noise: 6.7 dB
Carrier width: 15.381 Mhz
BitRate: 15.750 Mbit/s
----------------------------------------
TP N: 6
Frequency: 3706.579 Mhz
Symbol rate: 5999 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -44 dBm
Signal/Noise: 10.1 dB
Carrier width: 8.099 Mhz
BitRate: 8.294 Mbit/s
----------------------------------------
TP N: 7
Frequency: 3715.817 Mhz
Symbol rate: 8166 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -43 dBm
Signal/Noise: 8.3 dB
Carrier width: 11.025 Mhz
BitRate: 11.290 Mbit/s
----------------------------------------
TP N: 8
Frequency: 3725.909 Mhz
Symbol rate: 8165 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 2/3
RollOff: 0.20
Pilot: off
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -43 dBm
Signal/Noise: 10.2 dB
Carrier width: 9.799 Mhz
BitRate: 16.175 Mbit/s
----------------------------------------
TP N: 9
Frequency: 3734.871 Mhz
Symbol rate: 6499 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S2/QPSK
FEC: 2/3
RollOff: 0.20
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -43 dBm
Signal/Noise: 9.2 dB
Carrier width: 7.799 Mhz
BitRate: 8.598 Mbit/s
----------------------------------------
TP N: 10
Frequency: 3760.966 Mhz
Symbol rate: 25999 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 7/8
RollOff: 0.35
RF-Level: -39 dBm
Signal/Noise: 12.0 dB
Carrier width: 35.099 Mhz
BitRate: 41.931 Mbit/s
----------------------------------------
TP N: 11
Frequency: 3800.909 Mhz
Symbol rate: 28095 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 3/4
RollOff: 0.20
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -38 dBm
Signal/Noise: 11.9 dB
Carrier width: 33.714 Mhz
BitRate: 62.624 Mbit/s
----------------------------------------
TP N: 12
Frequency: 3820.892 Mhz
Symbol rate: 27499 KS
Polarization: Vertical
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 3/4
RollOff: 0.20
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -41 dBm
Signal/Noise: 8.7 dB
Carrier width: 32.999 Mhz
BitRate: 61.295 Mbit/s
----------------------------------------
TP N: 13
Frequency: 3840.973 Mhz
Symbol rate: 29719 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 5/6
RollOff: 0.20
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -37 dBm
Signal/Noise: 11.2 dB
Carrier width: 35.663 Mhz
BitRate: 73.673 Mbit/s
----------------------------------------
TP N: 14
Frequency: 3860.899 Mhz
Symbol rate: 28099 KS
Polarization: Vertical
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 3/4
RollOff: 0.25
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -39 dBm
Signal/Noise: 9.2 dB
Carrier width: 35.124 Mhz
BitRate: 62.633 Mbit/s
----------------------------------------
TP N: 15
Frequency: 3880.878 Mhz
Symbol rate: 27499 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -37 dBm
Signal/Noise: 11.9 dB
Carrier width: 37.124 Mhz
BitRate: 38.014 Mbit/s
----------------------------------------
TP N: 16
Frequency: 3890.476 Mhz
Symbol rate: 11839 KS
Polarization: Vertical
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 3/4
RollOff: 0.25
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -42 dBm
Signal/Noise: 8.1 dB
Carrier width: 14.799 Mhz
BitRate: 26.389 Mbit/s
----------------------------------------
TP N: 17
Frequency: 3899.460 Mhz
Symbol rate: 2240 KS
Polarization: Vertical
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 3/5
RollOff: 0.25
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -43 dBm
Signal/Noise: 7.5 dB
Carrier width: 2.800 Mhz
BitRate: 3.987 Mbit/s
----------------------------------------
TP N: 18
Frequency: 3906.967 Mhz
Symbol rate: 2814 KS
Polarization: Vertical
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -42 dBm
Signal/Noise: 10.9 dB
Carrier width: 3.800 Mhz
BitRate: 3.891 Mbit/s
----------------------------------------
TP N: 19
Frequency: 3914.051 Mhz
Symbol rate: 7258 KS
Polarization: Vertical
Spectrum: Inverted
Standard/Modulation: DVB-S/QPSK
FEC: 5/6
RollOff: 0.35
RF-Level: -41 dBm
Signal/Noise: 7.8 dB
Carrier width: 9.799 Mhz
BitRate: 11.149 Mbit/s
----------------------------------------
TP N: 20
Frequency: 3920.948 Mhz
Symbol rate: 29719 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 5/6
RollOff: 0.20
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -35 dBm
Signal/Noise: 11.6 dB
Carrier width: 35.663 Mhz
BitRate: 73.673 Mbit/s
----------------------------------------
TP N: 21
Frequency: 3940.945 Mhz
Symbol rate: 28099 KS
Polarization: Vertical
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 3/4
RollOff: 0.25
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -36 dBm
Signal/Noise: 6.4 dB
Carrier width: 35.124 Mhz
BitRate: 62.633 Mbit/s
----------------------------------------
TP N: 22
Frequency: 3960.920 Mhz
Symbol rate: 27499 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -32 dBm
Signal/Noise: 12.1 dB
Carrier width: 37.124 Mhz
BitRate: 38.014 Mbit/s
----------------------------------------
TP N: 23
Frequency: 3980.971 Mhz
Symbol rate: 28099 KS
Polarization: Vertical
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -33 dBm
Signal/Noise: 10.3 dB
Carrier width: 37.934 Mhz
BitRate: 38.844 Mbit/s
----------------------------------------
TP N: 24
Frequency: 4000.911 Mhz
Symbol rate: 29719 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 5/6
RollOff: 0.20
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -29 dBm
Signal/Noise: 11.3 dB
Carrier width: 35.663 Mhz
BitRate: 73.673 Mbit/s
----------------------------------------
TP N: 25
Frequency: 4020.947 Mhz
Symbol rate: 28095 KS
Polarization: Vertical
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 3/4
RollOff: 0.25
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -35 dBm
Signal/Noise: 8.5 dB
Carrier width: 35.119 Mhz
BitRate: 62.624 Mbit/s
----------------------------------------
TP N: 26
Frequency: 4040.966 Mhz
Symbol rate: 26499 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 1/2
RollOff: 0.35
RF-Level: -29 dBm
Signal/Noise: 10.5 dB
Carrier width: 35.774 Mhz
BitRate: 24.421 Mbit/s
----------------------------------------
TP N: 27
Frequency: 4060.951 Mhz
Symbol rate: 26666 KS
Polarization: Vertical
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -38 dBm
Signal/Noise: 6.7 dB
Carrier width: 36.000 Mhz
BitRate: 36.863 Mbit/s
----------------------------------------
TP N: 28
Frequency: 4065.930 Mhz
Symbol rate: 4295 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 3/5
RollOff: 0.20
Pilot: off
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -38 dBm
Signal/Noise: 10.2 dB
Carrier width: 5.155 Mhz
BitRate: 7.645 Mbit/s
----------------------------------------
TP N: 29
Frequency: 4070.957 Mhz
Symbol rate: 2962 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S2/QPSK
FEC: 5/6
RollOff: 0.35
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -36 dBm
Signal/Noise: 10.8 dB
Carrier width: 4.000 Mhz
BitRate: 4.902 Mbit/s
----------------------------------------
TP N: 30
Frequency: 4076.855 Mhz
Symbol rate: 6499 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 2/3
RollOff: 0.20
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -36 dBm
Signal/Noise: 9.9 dB
Carrier width: 7.799 Mhz
BitRate: 12.875 Mbit/s
----------------------------------------
TP N: 31
Frequency: 4083.117 Mhz
Symbol rate: 3184 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 5/6
RollOff: 0.35
RF-Level: -38 dBm
Signal/Noise: 9.1 dB
Carrier width: 4.299 Mhz
BitRate: 4.892 Mbit/s
----------------------------------------
TP N: 32
Frequency: 4087.700 Mhz
Symbol rate: 3180 KS
Polarization: Horizontal
Spectrum: Inverted
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -40 dBm
Signal/Noise: 8.8 dB
Carrier width: 4.293 Mhz
BitRate: 4.396 Mbit/s
----------------------------------------
TP N: 33
Frequency: 4100.945 Mhz
Symbol rate: 29719 KS
Polarization: Vertical
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 5/6
RollOff: 0.35
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -41 dBm
Signal/Noise: 8.6 dB
Carrier width: 40.121 Mhz
BitRate: 73.673 Mbit/s
----------------------------------------
TP N: 34
Frequency: 4120.877 Mhz
Symbol rate: 27499 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 7/8
RollOff: 0.35
RF-Level: -37 dBm
Signal/Noise: 11.2 dB
Carrier width: 37.124 Mhz
BitRate: 44.350 Mbit/s
----------------------------------------
TP N: 35
Frequency: 4140.921 Mhz
Symbol rate: 27499 KS
Polarization: Vertical
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -41 dBm
Signal/Noise: 8.1 dB
Carrier width: 37.124 Mhz
BitRate: 38.014 Mbit/s
----------------------------------------
TP N: 36
Frequency: 4146.553 Mhz
Symbol rate: 5316 KS
Polarization: Horizontal
Spectrum: Inverted
Standard/Modulation: DVB-S/QPSK
FEC: 5/6
RollOff: 0.35
RF-Level: -43 dBm
Signal/Noise: 9.5 dB
Carrier width: 7.177 Mhz
BitRate: 8.166 Mbit/s
----------------------------------------
TP N: 37
Frequency: 4165.929 Mhz
Symbol rate: 5039 KS
Polarization: Horizontal
Spectrum: Inverted
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -44 dBm
Signal/Noise: 10.7 dB
Carrier width: 6.803 Mhz
BitRate: 6.967 Mbit/s
----------------------------------------
TP N: 38
Frequency: 4173.003 Mhz
Symbol rate: 2481 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -44 dBm
Signal/Noise: 9.6 dB
Carrier width: 3.349 Mhz
BitRate: 3.430 Mbit/s
----------------------------------------
TP N: 39
Frequency: 4176.887 Mhz
Symbol rate: 2814 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -45 dBm
Signal/Noise: 10.8 dB
Carrier width: 3.800 Mhz
BitRate: 3.891 Mbit/s
----------------------------------------
Total Scan Time = 939.785s

The summary of the services that I found is as follows:

The first one is a feed, likely from a truck. Good to see C-band feeds still alive, but it seems they are not that common anymore since the trucks and dishes are physically bigger. Interesting services include Channel NewsAsia, Al Jazeera English, DW English, NHK World TV and Pheonix Infonews. I might park the dish here in the future given the variety of content still available, but it’s sad to see a lot is encrypted nowadays.

Going to the other extreme compared to examples shown in the previous part, this very fuzzy signal was locked and held.

Interesting Signals

Here’s the full swept spectrum in horizontal (above) and vertical (below) polarities, as usual.

Beacons

Looking around proved to be an interesting exercise. I didn’t record which polarity, but the beacon on the right was seen around 3635.439542Mhz, with the CW beacon 1Mhz below.

Zooming right in, it seems there is a main subcarrier at 32khz which seems to be a narrow FSK/PSK. I suspect the outer subcarrier at 64khz may be intended, this seem quite similar to the beacon spotted weakly on AsiaSat 5 but at a different frequency. Curious.

The upper frequency beacons were only seen in the horizontal polarization and were all very strong, making it easy to eliminate the weaker spikes (which may be spurious, or from adjacent satellites). Beacon frequencies were approximately:

  • 4192.943123Mhz (H, modulated, ~7.25Mhz space)
  • 4200.185623Mhz (H, modulated, 0.6Mhz space)
  • 4200.785623Mhz (H, modulated, 0.6Mhz space)

The weakest one at 4192.94Mhz proved interesting with a narrow subcarrier at 32khz which seemed to be unmodulated, and an outer FSK carrier that hopped between about 161.75khz and 166khz (~4.5khz shift).

The one at 4200.19Mhz has an inner subcarrier at 16khz and an outer at 48khz with a shift of about 10khz.

The highest frequency beacon at 4200.79Mhz has three (?) subcarriers, an inner narrow type at 24khz, a middle at 48khz and an outer at 72khz, the latter two being wide FSK/PSK type.

113°E Palapa D

Palapa D is an Indonesian satellite operated by Indosat Ooredoo Singapore which provides broadcast services to Indonesia and surrounding areas. It operates in the extended C-band, but only the global beam reaches Australia.

From the CrazyScan output, it doesn’t seem any of the extended C-band transponders make it to where I am in Sydney. The only transmissions heard are in the horizontal polarity, so if you try lining up the dish with the LNB powered in the vertical polarity, you’re not going to have much luck. In fact, a regular needle sat-finder with this LNB might well be more influenced by the “loud” LTE interference than the satellite signals! Anyhow, the BLScan output gave a few transponders to follow-up on.

TP N: 1
Frequency: 3746.111 Mhz
Symbol rate: 4399 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 3/5
RollOff: 0.20
Pilot: off
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -43 dBm
Signal/Noise: 11.4 dB
Carrier width: 5.279 Mhz
BitRate: 7.830 Mbit/s
----------------------------------------
TP N: 2
Frequency: 3752.009 Mhz
Symbol rate: 4699 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -43 dBm
Signal/Noise: 10.6 dB
Carrier width: 6.344 Mhz
BitRate: 6.497 Mbit/s
----------------------------------------
TP N: 3
Frequency: 3763.309 Mhz
Symbol rate: 3499 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -44 dBm
Signal/Noise: 10.5 dB
Carrier width: 4.724 Mhz
BitRate: 4.838 Mbit/s
----------------------------------------
TP N: 4
Frequency: 3767.700 Mhz
Symbol rate: 3999 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S2/QPSK
FEC: 4/5
RollOff: 0.20
Pilot: off
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -43 dBm
Signal/Noise: 9.1 dB
Carrier width: 4.799 Mhz
BitRate: 6.350 Mbit/s
----------------------------------------
TP N: 5
Frequency: 3774.512 Mhz
Symbol rate: 6499 KS
Polarization: Horizontal
Spectrum: Inverted
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -42 dBm
Signal/Noise: 10.4 dB
Carrier width: 8.774 Mhz
BitRate: 8.985 Mbit/s
----------------------------------------
TP N: 6
Frequency: 3787.089 Mhz
Symbol rate: 5631 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -43 dBm
Signal/Noise: 13.1 dB
Carrier width: 7.603 Mhz
BitRate: 7.785 Mbit/s
----------------------------------------
TP N: 7
Frequency: 3911.194 Mhz
Symbol rate: 1499 KS
Polarization: Horizontal
Spectrum: Inverted
Standard/Modulation: DVB-S2/QPSK
FEC: 2/3
RollOff: 0.20
Pilot: on
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -41 dBm
Signal/Noise: 12.5 dB
Carrier width: 1.799 Mhz
BitRate: 1.983 Mbit/s
----------------------------------------
TP N: 8
Frequency: 3926.123 Mhz
Symbol rate: 2589 KS
Polarization: Horizontal
Spectrum: Inverted
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -41 dBm
Signal/Noise: 10.9 dB
Carrier width: 3.496 Mhz
BitRate: 3.580 Mbit/s
----------------------------------------
TP N: 9
Frequency: 3934.186 Mhz
Symbol rate: 7199 KS
Polarization: Horizontal
Spectrum: Inverted
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -38 dBm
Signal/Noise: 12.2 dB
Carrier width: 9.719 Mhz
BitRate: 9.953 Mbit/s
----------------------------------------
TP N: 10
Frequency: 3988.696 Mhz
Symbol rate: 2500 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 5/6
RollOff: 0.35
RF-Level: -36 dBm
Signal/Noise: 12.3 dB
Carrier width: 3.375 Mhz
BitRate: 3.840 Mbit/s
----------------------------------------
TP N: 11
Frequency: 4015.166 Mhz
Symbol rate: 7199 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 5/6
RollOff: 0.35
RF-Level: -33 dBm
Signal/Noise: 14.4 dB
Carrier width: 9.719 Mhz
BitRate: 11.059 Mbit/s
----------------------------------------
TP N: 12
Frequency: 4081.188 Mhz
Symbol rate: 28124 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S/QPSK
FEC: 3/4
RollOff: 0.35
RF-Level: -34 dBm
Signal/Noise: 12.3 dB
Carrier width: 37.967 Mhz
BitRate: 38.877 Mbit/s
----------------------------------------
TP N: 13
Frequency: 4110.703 Mhz
Symbol rate: 11668 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 3/4
RollOff: 0.20
Pilot: off
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -40 dBm
Signal/Noise: 9.9 dB
Carrier width: 14.002 Mhz
BitRate: 26.008 Mbit/s
----------------------------------------
TP N: 14
Frequency: 4132.164 Mhz
Symbol rate: 12249 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S2/8PSK
FEC: 2/3
RollOff: 0.20
Pilot: off
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -40 dBm
Signal/Noise: 10.9 dB
Carrier width: 14.699 Mhz
BitRate: 24.265 Mbit/s
----------------------------------------
TP N: 15
Frequency: 4159.896 Mhz
Symbol rate: 13999 KS
Polarization: Horizontal
Spectrum: Normal
Standard/Modulation: DVB-S2/QPSK
FEC: 1/2
RollOff: 0.35
Pilot: off
Coding mode: CCM
Long frame
Transport stream
Single input stream
RF-Level: -45 dBm
Signal/Noise: -10.0 dB
Carrier width: 18.899 Mhz
BitRate: 13.845 Mbit/s
----------------------------------------
Total Scan Time = 1443.723s

The services I could lock included the following:

Interesting Signals

The spectrum scan in horizontal (above) and vertical (below) shows that virtually no services were resolved in the vertical polarity. A bit of unevenness is expected due to cable losses, impedance mismatches and LNB performance variations.

Some very weak and narrow data services seem to be running through the satellite on a near continuous transmission cycle.

Whereas some others seem to be using a longer TDMA system.

The most exciting ones are the short slot TDMA ones where transmissions are brief and light up the slots making pretty bands which remind me of DNA.

Beacons

At the low end of the band, it seems that a beacon might have been found in the vertical polarity, but it is very weak. Maybe it’s emitted out of the beam not intended for reception in Australia. The approximate frequency is 3702.101462Mhz, and it has a sideband at about 64khz.

At the high end of the band, it seems like there are two beacons (left pair) that are on the horizontal polarity, with the right-most beacon being circular polarity. The one in the middle appears to be vertical. There was also another beacon just out of shot. The frequencies are approximately:

  • 4184.098059Mhz (V, modulated)
  • 4188.643085Mhz (CP, modulated)
  • 4195.130585Mhz (V, modulated)
  • 4199.247244Mhz (H, modulated, ~0.5Mhz space based on later screenshot)
  • 4199.744615Mhz (H, modulated, ~0.5Mhz space based on later screenshot)

The beacon at 4184Mhz can be seen to be quite weak but has two subcarriers – a narrow one at 28khz and a wider one at 64khz.

The beacon at 4188.64Mhz appears to have narrow subcarriers at 32khz and 128khz but no modulation.

The paired beacons at 4199.24Mhz and 4199.74Mhz seem to be identical “twins”. They transmit the same data, with a wider FSK/PSK subcarrier at 65khz and a narrow subcarrier at 132khz which appears unmodulated.

Conclusion

Well, so far the hunt is going well, and it seems AsiaSat 7 might be a slot where I might park my dish. I’m pretty fond of NHK World, especially when it’s in HD, but it was dropped by Globecast off Optus D2 a while back to my dismay. Channel NewsAsia can also be worth watching for short periods.

Anyway, the more signals from satellites I see, the more similarities there seem to be. Beacons like to be towards the edges of the passband, tend to be AM modulated with subcarriers of either narrow or wider PSK/FSK types. Data services come in many varieties, which makes for some interesting spectrums.

The next post (when time permits) will continue along the hunt … there’s quite a few satellites in the C-band to visit!

About lui_gough

I'm a bit of a nut for electronics, computing, photography, radio, satellite and other technical hobbies. Click for more about me!
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