BULLETIN: AL3115 VENDOR: ALINCO SUBJECT: ADJUSTMENTS FOR DR110 and DR112 TOP VIEW ----------------------------------------- | | ----------------------------------------- | | | | | |--------- | | | | VR6 VR5 | | | | O O | | | | O O O | | | | VR7 VR4 VR2 | | | |---------------- | | | | VR3 | | | | O | | ---------------------------------| | | VR9 | | | -------- TP3 | O | | | | VCO | O TC2 | | | | |TC1 TC2| O | | | | | O O | | | | | --------- VR1 | -------- | O | | | | | | | | __X__ | | | / \ | | ----------------------------------------- | | ----------------------------------------- FRONT OF RADIO NOTE: IF UNSURE OF ADJUSTMENTS, THEN TAKE YOUR RADIO TO A QUALIFIED TECHNICIAN. I ASSUME NO RESPONSIBILITY, BUT OFFER A PHOTO COPY OF DOCUMENT SENT TO ME BY ALINCO WHICH SHOWS THIS DIAGRAM/ADJUSTMENTS. KB8CMQ ITEM ADJ POINT METHOD ------------------------------------------------------------------------------- VCO P/D VOLTAGE TC2 ADJUST TC2 SO THAT THE VOLTAGE OF TP3 IS 4V (RX) (VCO BOX) ON THE RECEIVING MODE. ------------------------------------------------------------------------------- VCO P/D VOLTAGE TC1 ADJUST TC1 SO THAT THE VOLTAGE OF TP3 IS 3V (TX) (VCO BOX) ON THE TRANSMISSION MODE. ------------------------------------------------------------------------------- FREQUENCY TC2 SET THE UNIT IN TX MODE AT 145.00 MHZ AND (MAIN BOARD) ADJUST TC2. ------------------------------------------------------------------------------- POWER OUT VR6 (HI) ON "HI" POSITION, TURN VR6 FOR 45 WATTS OUT VR7 (LO) ON "LO" POSITION, TURN VR7 FOR 5 WATTS OUT MAKE THESE ADJUSTMENTS ON 145.00 MHZ ------------------------------------------------------------------------------- RF POWER METER VR4 TURN VR4 SO THAT 3 SEGMENTS WILL LIGHT ON "LO" POSITION. ------------------------------------------------------------------------------- DEVIATION VR3 INPUT A SIGNAL OF 1 KHz/25 mV INTO THE MIC JACK AND ADJUST VR3 SO THAT YOU OBTAIN 4.9 KHz/Dev IN THE TX MODE. ------------------------------------------------------------------------------- MIC GAIN VR2 INPUT A SIGNAL OF 1 KHz/10 mV INTO THE MIC JACK AND ADJUST VR2 SO THAT YOU OBTAIN 4.0 KHz/Dev IN THE TX MODE. ------------------------------------------------------------------------------- PROTECTION CIRCUIT VR5 DISCONNECT ANTENNA AND IN TX MODE ADJUST VR5 TO 5 AMP CURRENT CONSUMPTION. ------------------------------------------------------------------------------- S-METER VR1 TURN VR1 SO THAT THE '1' BEGINS TO LIGHT. (SG OUTPUT: 3 dBu EMF) ------------------------------------------------------------------------------- SQUELCH SENSITIVITY VR9 TURN SQUELCH FULL CLOCKWISE AND TURN VR9 SO THAT THE SQUELCH WILL BE CLOSED AT THE SG OUTPUT OF -6 dBu. ------------------------------------------------------------------------------- DALE CAVANAUGH LAKE MILTON, OHIO