Re: StarTrek Digital LNB
Right,
first of all, nr 6 seems to be the mixing Diode - most often a pair of two, mixing input and Lo frequency.
to generate these 3 frequencies what comes into my mind is to modify the hole LNB or use it in reverse as an up converter -
generate 450mhz, 250mhz, 850mhz with a pll and vco and feed them into the IF port(output of lnb) or use a vco at 850mhz-1ghz, frequency locked and upc controlled,
generate 850mhz, 450 and 250mhz via diviers and feed them into IF port - watch out for the IF amps nr7/8 - disassemble them
then use LNB mixer to mix these 3 frequencies with 9,75 and 10,6GHz, retune the bandpass and turn around the amps nr 3 - there you get your output frequencies -
try to filter them cause there will always be sum and diffrence frequency in mixing processes
try to find some notes in the internet where amateur radio guys use LNBs to
build 10GHz transmitters maybe they have additional notes
just an idea
hope that helps
dorgi