Considerations about ALINCO ----------------------------------------------------------------------------- Hello FELLOW Packeteers! I just got off the phone with Matt from Alinco! I have been asked if the 9600 baud Mod that I posted would also work for the 110. YES IT WILL! The 110, 112 and 1200 radios are identical except for the power output of the 1200 (25-watts high power compared to the 45-watts of the 110 and 112!) and the 112 has a LCD display to replace the piece of junk one on the 110! Also, if you want to have more power in the 1200, you can buy the 100/112 PA Board (45-watts) for $65.00 from Alinco. It also requires buying 4 high power switching diodes for $20.00 from Alinco. $85.00 for 20-watts?...Doesn't sound like a good investment to me. Don't forget the time involved with doing this mod. I discourage the use of HIGH POWER and have posted bulletins on this subject! Never the less, I feel obligated to pass this info on to you, I am not the U.S. Government, I will NOT keep things from you! To follow is the 9600 baud Mod I received from Alinco. Alinco warns that the Warranty is void if this Mod is performed! KA1BOY has been great enough to try this Mod and says it works great for 1200 baud as well as 9600 baud! From all of us to you, THANK YOU BARRY! One point to remember, you will not be able to use the radio for voice. This mod uses the Mic Connector... TRANSMITTER 1. Remove R-31 2. Remove C-40 (save this part, it is to be reused!) 3. Connect one leg of C-40 to PIN 7 of the VCO Board 4. Connect a jumper from the free leg of C-40 to the HOT end of C-35 The MIC input is now connected DIRECTLY to the VCO! RECEIVER 1. Disconnect the PINK wire connected to the MIC connector and the PC Board from the PC Board 2. Reconnect the PINK wire to PIN 2 on the IF Board connector This eliminates the low pass filtering on the discriminator! That is it to the MOD for the 110, 112, and the 1200! Remember, you now use the MIC Connector For inputting 9600 baud and it WILL work for 1200 baud! A special note to all SYSOPS out there...Buy this radio and do this MOD! It will allow users to set their TXDelay down to a lower setting giving the channel MORE throughput! USERS, make a DONATION to your SYSOPS so they can help make the system YOU are using, BETTER! We must all do our part to help! I would like to hear from all of you that tries this MOD! I GIVE PARTIAL CREDIT TO BARRY, KA1BOY, FOR HIS INPUT ON THIS MODIFICATION!!! 73 FELLOW PACKETEERS!!! DINO...KC6RIX @ WF6O.#SOCA.CA.USA.NA I have made this mod, and I have the following suggestions: (a) you can get a "map" of the board via FAX or snail mail from Alinco -- this helps a LOT (it's impossible to read component labels) -- Alinco is in Torrance Calif, in the phone directory. (b) Throw away C40, it is impossible for a mere mortal to do what they are suggesting. Replace that SMT C40 with an axial .01uf cap (non-polarized, anything kind you want, I used a tant.) and some insulation tubing over the leads (it needs to stretch 2 inches across the bottom of the pcb. Alinco claims this mod makes 1200bps unusable, untrue, I use my modded 1200 on both 1200 and 9600 bps without noticable degredation of performance. ----------------------------------------------------------------------------- I have made this mod, and I have the following suggestions: (a) you can get a "map" of the board via FAX or snail mail from Alinco -- this helps a LOT (it's impossible to read component labels) -- Alinco is in Torrance Calif, in the phone directory. (b) Throw away C40, it is impossible for a mere mortal to do what they are suggesting. Replace that SMT C40 with an axial .01uf cap (non-polarized, anything kind you want, I used a tant.) and some insulation tubing over the leads (it needs to stretch 2 inches across the bottom of the pcb. Alinco claims this mod makes 1200bps unusable, untrue, I use my modded 1200 on both 1200 and 9600 bps without noticable degredation of performance. Regards, Paul ----------------------------------------------------------------------------- If you are not used to working on these small circuits send the radio to your local ham repair station. I cannot teach soldering via packet radio so only do if you can solder in small places. STEP 1 - Remove top and bottom cover STEP 2 - Remove 3 knobs from front of radio STEP 3 - Remove nut from shaft of the channel selector STEP 4 - Remove nut from the microphone connector STEP 5 - Remove front plate from radio, This has snaps on top and bottom, SO BE CAREFUL !! STEP 6 - Remove 3 small philips screws that hold the PC board to the front of the radio. DO NOT CUT WIRES !!! STEP 7*- Locate tabs that are holding the display to the PC board and bend straight. BE CAREFUL DO NOT BREAK OFF !!! STEP 8*- Remove display from pc board and set aside. * Step 7 and 8 can be eliminated if you can find the 2 lites that light up the display from the back of the pc board STEP 9 - Locate lites (6). 1 lite under the off/on sw 3 above the row of small switches. These 4 lites have a blue rubber cover on them. 2 lites mounted where the lcd display was. STEP 10- Replace lite under power switch, remember to use the blue cover over the new lite as well as the yellows sleeves on wires. This lite you solder from the front. STEP 11- Replace 3 lites that are above the micro switches on the front of the pcboard. This will have to be un-solder from the back. Also replace the blue covers over the 3 lites. STEP 12- Replace 2 lites that stick through holes that go where the lcd display is, also replace the yellow sleeves. These lites solder from the back. STEP 13- Re-install the lcd display and be sure there is no contamination of the contacts on the board and lcd display. Be shure to re twist the tabs on the display that goes through the pc board. This display must be tight to the pc board or the display will not work either with missing lcd segments or no segments on. This lcd display shows the freq. signal strength, channel number, and other functions. STEP 14- Test the display by powering up the radio. If you are getting missing numbers, pull the lcd display and clean the contacts on the pc-board and the display. I did by scrapping the pc board with a screw driver as well as the lcd display contact ribbon. STEP 15- assemble the radio and check the display at each major assembly point. STEP 16- Reset the cpu as shown in your owners manual. This is because that the cpu is located on the board you were working on and may have some bad data after working on the rig. You may have to reset the cpu when you test the rig in order to show the full lcd display THANKS AND 73'S FRANK N2JYG @ WA0PTV.#WNY.NY.USA.NOAM a special note: i have had an alinco dr-110 for the last several years on the shermn node f loacated in sherman NY and it keeps on ticking even when the storms roll through. As well as A DR-410 and no problem, except for the led lites....oh well !!! ======================================================================== Note: I haven't tried or verified this, proceed at your own risk. WA2ISE -----------------------------------------------------------------------------