Your method of direct satellite tracking by telemetry signal is interesting. Can you suggest us some particular models of DVB-T dongle please? Which one do you use?
I am using the Terratec Cinergy T Stick+ (chipset RTL2832U/E4000), no longer in business.
This is only part of the declared compatible:
NooElec TV28T v1 (chipset RTL2832U/E4000)
NooElec TV28T v2 (chipset RTL2832U/R820T)
NooElec NESDR Nano (chipset RTL2832U/R820T)
NooElec NESDR Nano-P (chipset RTL2832U/R820T)
NooElec NESDR Mini (chipset RTL2832U/R820T)
NooElec NESDR Mini+ 0.5PPM TCXO (chipset RTL2832U/R820T)
NooElec NESDR Mini 2 (chipset RTL2832U/R820T2)
NooElec NESDR XTR (chipset RTL2832U/E4000)
EzTV666 (chipset RTL2832U/E4000)
Newsky TV28T v2 (chipset RTL2832U/R820T)
ezcap USB 2.0 DVB-T/DAB/FM dongle (chipset RTL2832U/E4000)
Terratec Cinergy T Stick RC (Rev.3) (chipset RTL2832U/E4000)
Terratec Cinergy T Stick+ (chipset RTL2832U/E4000)
Terratec NOXON DAB/DAB+ USB dongle (rev 2) (chipset RTL2832U/E4000)
Compro Videomate U620F (chipset RTL2832U/E4000)
Compro Videomate U650F (chipset RTL2832U/E4000)
KEEDOX DVB-T USB TV RTL-SDR FM+DAB (chipset RTL2832U/R820T)
Notes:
Tuner E4000, frequency available 52 to 1100 end 1250 to 2200 Mhz.
Tuner R820T, frequency available 24 to 1750 Mhz.