There were 2 major classic models, the MK I with the MB8719 PLL chip, and 3 xtals, and the MK II - MC 145106 PLL and 3 IC's instead. The first version was my favourite, i did alot of work on these radio's years ago when
CB was big over here. The MK I had slightly nicer
SSB TX audio i always found, and the
RX was a little more deaf, the beep was very distinctive too. The MK II was a easier / simpler device to add extra bands on to, had better
RX, a much more normal sounding beep too
I used to put crystal IF filters in for the locals, they used to like that. really improves the
RX of the MK I too. i would like to pick up one for 10m use sometime, a MK I that is
Nice old set !
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