I am now using an Avenger Galaxy 19 single ku band lnb so as not require C-band dish sizes. Each of the receivers I used do not find any channels and one of my receivers is updated to recognize the current Satellite community up in orbit. I ought to find at least one channel. Right? I have narrowed down and believe some kind of interference is keeping me from finding at least one channel. I used my phone with an app powered by ATT data internet and satellite.
If I disconnect my lnb from the receiver I do not have a signal. However, when connected the signal is weak or weakened by the interference I spoke about earlier.
Your statement, "As all transponders on Galaxy 19 are high band you could try a GR-11 22khz generator, or an LNB with a single local oscillator (10.6 or 10.75GHz). " has something to do with the interference I spoke about. My parameters are probably off. Furthermore, with the updated receiver I tried HI/Low lnb settings and 22khz and not 22khz to no avail.