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- From cbfsb!att!rutgers!network.ucsd.edu!dog.ee.lbl.gov!nosc!crash!slic!mikey Sun Mar 15 08:45:14 EST 1992
- Article: 15912 of rec.radio.amateur.misc
- Path: cbfsb!att!rutgers!network.ucsd.edu!dog.ee.lbl.gov!nosc!crash!slic!mikey
- From: mikey@slic.cts.com (Mike Shirley)
- Newsgroups: rec.radio.amateur.misc
- Subject: Re: Icom IC-22s mods request...
- Message-ID: <X41LHB1w164w@slic.cts.com>
- Date: 14 Mar 92 05:00:44 GMT
- References: <9203112106.AA11308@ca.novell.com>
- Organization: SLIC Amateur Radio Support, San Diego, CA
- Lines: 47
-
- mlodge@ca.NOvell.COM (Michael Lodge) writes:
-
- >
- > I am looking for any/all mods to the rather elderly Icom
- > IC-22s 2-meter transceiver. I have made a couple myself
-
- Just happened to trip over my hard-drive and found this...
-
- Radio & Electronics RT
- Category 6, Topic 34
- Message 13 Sat Dec 08, 1990
- MURREY [Brian KB9BVN] at 20:12 EST
-
- Here's what I have on the ICOM mod for the 22S
- ==============================================
-
- Icom IC22S.MOD Packet Modification
-
- The Icom IC22S is a ten watt diode matrix PLL synthesized 2 meter rig
- manufactured in the early 1970's. In it's stock condition it tunes 146-148
- MHz in 15 KHz steps. Since I am sure there are a few of these sitting on
- shelves collecting dust due to the limited tuning range, why not modify them
- for the perfect packet rig.
-
- First replace the 7.68 MHz Oscillator/Divider crystal (X1) with a 5.12 MHz
- crystal. This will move the band to 145.00- 146.94 MHz in 10 KHz increments.
- The repeater offset will now be 400 KHz which should not pose a problem in
- simplex packet operation. I will give the diode matrix settings for the most
- commonly used packet frequencies. You can formulate others as needed using
- the formula N=100*(f-145)+61 and the manual. The diode positions indicated
- ARE WHERE DIODES ARE PRESENT. The other positions are left empty.
-
- 145.01= D5,D4,D3,D2,D1
- 145.03= D6
- 145.05= D6,D1
- 145.07= D6,D2
- 145.09= D6,D2,D1
-
- 73's de Scott N5JLQ @ K6IYK....RELAYED BY WB0SEN & N0KGX
- ----------
-
-
- --
-
- Mike Shirley, WB6WUI INET: mikey@slic.cts.com
- PO Box 460 (San Diego) UUCP: {hplabs!hp-sdd nosc}!crash!slic!mikey
- Lakeside, CA 92040-0460 GEnie: SLIC
-
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