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- IC22S.1
-
- I have prepared information to modify the IC22S sythesizer to allow it to
- have 5 KHZ steps in lieu of the original 15 KHZ steps. This will allow the
- rig to go onto 145.01 MHZ for packet radio operation.
-
- In short, the modification requires changing a crystal, making some copper
- path cuts, adding some jumpers, and installing a new divide by N counter
- which consists of three CMOS digital integrated circuits.
-
- If you put it on a frequency as low as 145.01 you will also need to re-tune
- the front end and you may need to re-tune the VCO free running frequency. I have
- made the mod to my radio and am using it to up-load this file. I re-tuned the
- front end to increase sensitivity back to the normal although it did work
- without re-tuning. I did not have to adjust the VCO.
-
- If you would like to receive the information which consists of a schematic
- of new counter, old and new block diagrams and instructions to
- incorporate and test the modifications, send an SASE (standard business
- envelope, 22 cents postage) to:
-
- Jon Reeves, WB9CNE
- 12125 Trolley Rd.
- Oaklandon, In 46236-3056
-
- NOTE: The information which will be mailed is being prepared for publication.
- It is requested that the information be used only for modification of your
- personal radio and not be passed on without this note or placed on any
- bulletin board system. I am releasing the information now to assist packet
- radio operators in their efforts to move to 145.01 MHz and would
- appreciate consideration of this request.
- Downloaded From P-80 International Information Systems 304-744-2253
-