Anyone know how low the TBS6925 will go?
Mine doesn't reach below 10545 MHz, so unlikely to be much good for receiving the AMSAT transmissions.
BTW, a converter such as the Zinwell SUP-2400, which I have used with a US DirecTV Ka LNB for shifting its low IF output to the 950-2150 range, is ideal for use here. No need to open up your LNB to change its local oscillator.
A small modification is required to the unit, a wire or two to solder in. Widely available for a few quid from the States, an online search will bring up loads of sellers.
My Promax analyser has the usual 950-2150 IF range which cannot be extended, so I used this with the SUP-2400 for seeing if I can go down to, for instance 10000 MHz. An Octagon Optima OTLSO PLL LNBF was used for reception of signals generated by a VMA Spectrum Analyser.
Works fine. Obviously, without a relevant transmission yet from ES'Hail 2, I have to use the Promax to show the results with just the signal from the VMA source, rather than any STB etc. The SUP-2400 spectrum output is reversed, so it has to be taken account of when we convert the frequencies to a LOF figure in whichever receiver we use.
To find the LO frequency to set in a receiver for a specific received transmission, here's an example for 10000 MHz :-
10000 MHz minus 9750 MHz (LNB's LO) = 250 MHz.
Reversed spectrum of the SUP's 2400 MHz minus 250 MHz = 2150 MHZ. That's on the edge of your receiver;'s IF range!
For the LO figure to put in your receiver, 10000-2150 = 7850 MHz.
