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| THE NL3ASD MODIFICATION FILES - THE HAM RADIO MODIFICATION - PAGES PAGES A TO D | HOMEPAGE |
From: KPElecServ Subject: DJ-S11 mod The expanded frequencies for the Alinco two meter DJ-S11 is the same as for the DJ-S41 radio Remove 7 screws in the back case and battery compartment Carefully separate case halves Look for very small SMD green resistor jumper at left side near the middle of board labeled OP/CL Remove for expanded tx/rx Expanded frequency range is 136.00 to 173.995 mHz (There are two pads here, only the one nearest outside of radio is jumpered Didn't experiment to see what would happen if the other one or a combination of the two were jumpered but this might be the Mars/Cap mod.) Art, KC7GF ----------------------------------------------------------------- Subject: DJ-S11 Modification Subject: EXPANDED RX / TX MOD FOR ALINCO DJ-S11 This modofication is very much like the one described by KB1MZ for the DJ-S41 I like to thank him for initial modification Performing this modification will void any warranties. All standard disclaimers apply This mod is for the DJ-S11T 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 You will lose all of the memory contents 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 located near by 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 The thin board can be easily damaged by a high wattage soldering iron 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 136.000 MHz to above 173.995 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 (144 - 147.995 MHz) operation Again thanks to KB1MZ for his nice writeup 73's de KG7HQ; Michael Source QRZ: The Windows Ham Radio CDROM |
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