Subject: EXPANDED RX / TX MOD FOR ALINCO DJ-S41 Performing this modification will void any warranties All
standard disclaimers apply This mod is for the DJ-S41T, and not the DJ-S41© 10 mW version 1 Place the
radio face down on a soft towel This avoids scratching the display and gives you a place to put the seven
tiny screws to be removed 2 Remove the batteries 3 Remove the three screws on the upper rear cover, and
the four screws inside the battery compartment The rear cover can be lifted and removed easily, as there are
no wires to be concerned about The antenna connection is made by means of a gold-plated spring contact 4.
Look for a small (about 1 mm) green surface mount resistor (actually a 0 ohm jumper), located on the far left
side of the exposed circuit board, located to the "northwest" of the speaker There is a marking in white
letters, OP/CL, this resistor is over the top of the "P" It is the only green component visible on the
board (This radio does not have the traditional Alinco red and blue wires which have become so familiar...)
5 Carefully remove this resistor, using a small tip soldering iron, tweezers and a steady hand 6.
Re-assemble the radio, being careful that the thin rubber gasket is seated around the inside edge of the rear
cover Replace the batteries, press and hold the "F" button on the left side of the radio, and turn it on.
The display should show all segments and markings Release the "F" button and the radio will now be capable
of operating from approximately 425 MHz to above 470 MHz, depending on the VCO's tuning The display will
blink if the VCO is taken out of its range Re-tweeking of the VCO is not recommended THE NOT-SO-FINE PRINT:
7 Although reception on the expanded frequencies is legal, transmission is not This unit is not FCC
type-accepted for anything but ham band (425 - 440.995 MHz) operation KB1MZ 28-May-1997
Source QRZ: The Windows Ham Radio CDROM |
