To enable extended receive a jumper has to be removed. To
enable extended transmit a diode has to be removed. I have only
tested the extended receive which gives you from 118-174.995
and 320-479.995.
Open the case by removing all the screws on the top, bottom
and left/right sides and separating the top and bottom
covers from the chassis.
Next remove the plastic front panel that covers the logic circuit
board by removing the two top and two bottom screws that attach
it to the chassis.
Next remove the front panel logic board by taking out the four
front screws that attach it to the chassis.
Position the logic board so that the side normally near the chassis
is on top and a round flat battery attached via leads is visible with
the connector near the bottom and the cut out at the bottom right.
Below the battery on the lower right there are a number of
diodes, most likely surfaced mounted. Look just to the left of
the diodes, there will be a very small surface mount jumper at
the bottom (-#WW#- on diagram below). There is no silk screen
on the board to identify it (on mine at least) but the part
itself may have a zero printed on it for zero ohms. Removing
this jumper will give you extended receive capability.
Diagram (very bad but hopefully you get the idea)
R O U N D
B A T T E R Y
! ! ! ! !
! # # # # -#D#-
D D D D -#D#- -#D#
# # # # ! -#D#- -#D#-
-#WW#- ! ! ! ! -#D#- -***-
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