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mfdeng5 wrote:Hi Guys, i bought one of those NIB Maxar 80s on fleabay.....they are in sealed boxes!!! Could not believe it. Well anyway i made a mistake they are 31mhz split not 46mhz which i wanted (got caught up in moment and didnt read specs) Did anyone ever change a board out to get the higher split? I need it to receive only. Thanks Kevin
mfdeng5 wrote: Did anyone ever change a board out to get the higher split? I need it to receive only. Thanks Kevin
jackhackett wrote:I looked at the schematic for those, lowband came in 3 ranges, M, H and HH (why they didn't call them "L M and H" I don't know.. it's Moto, go figure) and there are a whole bunch of parts whose values change from one range to another... no way would it be worth trying to convert one.
Denton is comming up this weekend and it would be nice to be better informed about these units when I get there.
jackhackett wrote:Looks like a CA3089 based demodulator with no second IF, just the 10.7.
Receive appears to be low side injection for all splits, Fosc = Fc - 10.7
Transmit crystal freq is doubled in the M split, tripled in the H and HH splits.
And the model number gives no clue as to the split, just the number of channels, squelch type, and whether or not it has an extender.
swg wrote:A long time ago somebody told me the Moxy was essentially an FM'd CB chassis, looks like this one doesnt even rate that with single conversion.
jackhackett wrote:swg wrote:A long time ago somebody told me the Moxy was essentially an FM'd CB chassis, looks like this one doesnt even rate that with single conversion.
The Moxy looks pretty close to the Maxar circuit, including being single conversion. Definitely not a modified CB chassis.
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