Modifications for the ICOM - RogerK

Turning this board over with the LCD now facing you there is position for 7 SMD diodes marked A or A2 on the right hand sidejust above the central mounting point.The easiest way of removing them without damaging the assembly is to desolder one end with desoldering braid and the whileheating the contact with the soldering iron lift that end with a small pointy screw driver (0.7mm jewellers are good!). They justneed to clear the board by a fraction and then they can be easily reinstalled if necessary.Reverse this procedure to reassemble and be bloody carefull!!!.CheersERIC.Many tnx to Eric for finding the programming diodes.In the European version (IC-Q7E) there are 3 diodes mounted. Counting from the screwhole, there are # 1,3 and 7 installed.Number 1 sets the VHF tx range to 144-146 MHz.Number 3 sets the UHF tx range to 432-438 Mhz.Number 7 enables the facilities dedicated to the E-version, 1750Hz etc...So, if You want to keep the E-version don't remove #7.Removing #1 and 3 enables tx range from 136-174 and 400-470 MHz.For expanding only rx at the celluar band on 800 MHz, it seems to be another mod. too.Take a look at ZANA's home pageá www.alles.or.jp/~zana/index.htm if you are keen on Japanese.This modification is read 3070 times.top of page23-03-1999(IC-Q7) Icom Q7A mods from the factoryI have received the mods for the Q7A radio from Icom.You will have to take dissasemble the radio by :1. Removeing the batteries2. Removeing the 2 screws in the battery compartment3. Remove rear cover4. Desolder and remove the back board5. Remove the last screw on right side of radio6. Remove the antenna and volume knob and the two nuts7. Desolder the speaker leads8. Slide main board out9. Hold board that faces the front of the radio towards you10. Remove the SMT (s) as per ic-q7a.gif image11. Reassemble12. ReprogramI have tried this on my radio and it works just great. TX is from 140 Mhz to 170 Mhz and 400 Mhz to 470 Mhz with nodegradation in the receiver or transmitter.I also placed the radio on a service monitor and specs were the same as manufacturers specs. ( except the transmitter He He He) Be careful and have fun, Any questions about this mod please feel free to E~Mail me anytime.Ray N2ZEMThis modification is read 2973 times.top of page