Midland 70-066, Manual

Page: 61 / 74

The Midland 70-066 Transmitter PA Board:
Before you remove the PA PCB board, unscrew the nut from the UHF RF socket at the rear of the
Midland 70-066 transceiver.
REMOVE UHF NUT:
Midland 70-066 PA module above:
UHF NUT
The Midland 70-066 Transmitter PA stage swings down by unscrewing the two screws on the side of the
PA stage. Then remove the top PA cover, by unscrewing the two screws at the bottom of the cover.
The RT85 Transmitter PA PCB [ P rinted C ircuit B oard] is fixed to the chassis; Remove the top cover
from the PA PCB.
Unscrew the three screws from transistors Q503 & Q502. [Remember when placing PA PCB back into
housing to use
temperature transfer compound on bottom of transistors.]
Remove the 6 screws from the side of the PA PCB.
Remove the PA PCB from its enclosure.
Unsolder the 3 wires from the PCB –> T8V , +B & G .
Mark the PCB with your call-sign by using your felt pen. Your PA PCB can now be freely un-soldered.
Don’t forget to unsolder the holes where the three wires were connected.
Midland 70-066 low Band Conversion to 6 Meters: Transmitter PA Part 4 Ver 2.2 21Nov09 Page 2