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Test Equipment needed:
Hex tuning tool.
Flat blade tuning tool.
Voltmeter.
Signal Generator.
VSWR Meter and/or RF Power meter
Soldering Iron.
De-soldering equipment.
Sharp knife or scalpel.
Philips screwdriver
Wire cutters.
Needle nose pliers – small size.
Conversion Project Overview.
There are five major events to modify your raw low band transceiver.
Initially - Test transceiver. [This has to be done before any other operation.] This operation
should take one night for all users to be satisfied that their transceiver works!!
If you not happy with your soldering, then become a partner with somebody that is competent
with soldering.
Z-273 EPROM Modifications. Either use a Z-273 board programmer or; remove the EPROM
from the Z-273 PCB, solder in a low profile 22 pin socket into the 2716 EPROM holes, reprogram
the 2716 EPROM & place into the 22 pin socket.
Synthesizer Modification. Remove PCB board, remove coil, make coil, replace board, place
capacitors onto underside of board, synthesizer alignment and replace PCB board into transceiver.
In this part, you will use test equipment. [ie Frequency counter & DC meter. Plus tuning tools.]
Receiver Modification. Remove PCB board, solder place capacitors onto underside of board,
alignment of Receiver and replace PCB board into transceiver. In this part, you will use test
equipment. [ie Signal Generator & DC meter. Plus tuning tools.]
Transmitter PA Modifications. Remove PCB board, remove coils, make coils, solder capacitors
and coils onto underside of board, alignment of Transmitter and replace PCB board into
transceiver. In this part, you will use test equipment. [ie RF Power meter & DC meter. Plus tuning
tools.]
The Z-273 EPROM Modifications and Synthesizer Modification must be done first, before alignment can
be done
For members not savvy with the use of Test Equipment, please find an amateur who will be available to
guide you in alignment procedures.
Midland 70-066 low Band Conversion to 6 Meters: - Introduction Part 1
Page 1.6
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