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| THE NL3ASD MODIFICATION FILES - THE HAM RADIO MODIFICATION - PAGES PAGES A TO D | HOMEPAGE |
Date: 7 Jul 90 04:22:14 GMT From: philmtl!philabs!briar!rfc Subject: Alinco DR510 Crossband Repeater Mod To: info-hams29789 BF 4806 0 24-Jun 0021 N8KNJ 2111_KA3T MODSVehicular Extender Modification I discovered this modification the other day and wish to share it with other 510 owners, I did it and it works for me! I did not originate the modification and will NOT accept any responsibility for any damage the may occur as a result (I won't myself WA2ISE) How to do it 1 Remove bottom cover 2 Remove 2 Phillips screws at corners of subtone board (small board near center in front) and move the tone board out of the way 3 Solder an 16V electrolytic capacitor (10MFD to 100MFD but best to use 40MFD to 50MFD) as follows:A Neg (-) lead to pin 8 on device (IC) labeled - M54959P B Pos (+) lead to pin 3, counting from left while facing front of transceiver of the white 11 pin connector ANT Power cord -----------------Rear---------------------------- l_l_l_l_l_l_l_l l M54959P l l_____________l (-) l l l l l l l l------47uF+ /(+) / [][][][][][] [][][X][][][][][][][][] ------------------Front--------------------------- 4 Remove top cover and faceplate of transceiver Be careful of speaker wires! A To remove faceplate:1. Remove main dial knob and retaining nut 2 Remove mic socket retaining ring 3 GENTLY lift tabs, located approximately 3/4" in from each side, on top of faceplate and "rotate" toward front of the transceiver 4. When tabs are "free", turn transceiver over and repeat the process Remember - gently! 5 Set free plate aside 5 Locate surface monnt device labeled R-35 on control board (front of transceiver) A R-35 is positioned between, and slightly below, the squelch and high/low power button To the left of device R-35 is a "circle" trace inside the "circle" trace are two solder pads, one of which is already soldered to R-35 6. Bridge the unsoldered pad to the soldered pad inside the "circle" trace 7 Short R-35 ----------------------Top---- LCD (Vol) (Seq) [Power] (ll)- + [Hi/low] ^ ^ l R-35 l "circle" trace pads ----------------bottom------- 8 Replace faceplate, retaining nut, retaining ring, tone board, bottom and top of transceiver Operation 1 Store different bands (2m or UHF) in VFO mode and Memory Channel 1-9 Any thing you can store in memory 1-9, split, subtone enc, subtone dec will work 2 Store "DUAL" mode in VFO (Simplex) also it will accept subtone enc and subtone dec. 3 Turn power off and then keep pressing the REV key, turn on the power switch 4 Audio Vol control is your deviation control in repeater mode 5 To return to normal operation turn off power then turn on again without pressing any keys Notes:The transceiver scans back and forth between the VFO and Memory until it finds a signal then it locks on and transmits what it hears on the other band This scanning causes a slight delay when keying up as the radio takes time to scan I recommend the use of subtones when possible so that the radio will not key up on noise and not allow non-authorized personal to use your radio, the transmissions of which YOU are responsible Good Luck, es 73's Rick N8KNJ Note:I haven't tried this, proceed at your own risk WA2ISE ------------------------------ Source QRZ: The Windows Ham Radio CDROM |
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