Midland 70-066, Manual

Page: 4 / 74

Midland 70-066 low Band Conversion to 6 Meters: Part 1 Page 4
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.
The Project.
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. Remember that if you break or burn something, we cannot replace the transceiver
If you are not sure what you are doing, ask somebody.

Z-273 EPROM Modifications . If you do not have a Z-273 board burner then remove the Z-273
PCB and the associated 2716 EPROM. Then burn the EPROM & return it to the Z-273 PCB via a
2 pin socket; Else program the Z-273 via the Z-273 PCB programmer.

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. It is advisable that members split into groups, doing an event for each group.