Notes from the Editor (WA6ILQ):

N1BEC wrote this conversion and it is similar to KD3IJ's mod.

This modification moves the top end of the RF circuits to 54 MHz.
No changes are made in the audio or control circuits.

Mitrek High Split to 6M Ham Band Conversion 11-02-03 By Tom Herman, CETma N1BEC/7 Here are the parts that need to be changed out to make the low band-high split Motorola Mitrek operate well on the Six Meter Ham Band. The criteria here was to make the conversion as easy as possible, and to do this by changing out capacitors only, and just as many as are actually needed for good operation. Possibly other parts could be changed out, but the following list will get you the best performance for the least grief! Do yourself a favor, and use a good, hot soldering iron. To do this conversion, a number of coil shields must be removed, and some of the parts are soldered onto fairly substantial groundplanes. Also, if you do not solder the cans back on well, you will wind up with annoying intermittents! After re-tuning, the Mitrek in question gave me the rated power of 50 watts, and good receiver sensitivity. Transmitter: Part # Orig. Value 6M Value Notes: C701 16 pF 12 pF Watch soldering on cans of C703 24 pF 20 pF L701 - L705: Very Hi Q C704 150 pF 120 pF circuits! Poor Soldering C707 33 pF 24 pF will cause erratic TX power! C710 22 pF 15 pF C712 22 pF 15 pF C713 27 pF 20 pF Receiver: Part # Orig. Value 6M Value Notes: C166 100 pF 80-90 pF Rx picked up 0.05 uV sens. C101 30 pF 15 pF Tunes much better after C104 22 pF 15 pF conversion! C106 22 pF 15 pF C108 22 pF 15 pF C110 22 pF 15 pF Good Luck and have fun! -Tom N1BEC

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