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- From philabs!prls!mips!versatc!ames!ucsd!sdcsvax!ucsdhub!hp-sdd!hplabs!hpfcdc!hpldola!hp-lsd!col!billp Tue Apr 25 09:05:05 EDT 1989
- Article 11320 of rec.ham-radio:
- Path: philabs!prls!mips!versatc!ames!ucsd!sdcsvax!ucsdhub!hp-sdd!hplabs!hpfcdc!hpldola!hp-lsd!col!billp
- >From: billp@col.hp.com (Bill Pherigo)
- Newsgroups: rec.ham-radio
- Subject: ICOM 32AT MODS
- Message-ID: <4380043@col.hp.com>
- Date: 21 Apr 89 18:54:19 GMT
- Organization: HP Colorado Springs Division
- Lines: 34
-
-
- MODS FOR ICOM 32AT
-
- 1. Remove battery and antenna.
- 2. Loosen two screws on top of unit as much as possible without removing them.
- 3. Loosen 4 flat head screws on bottom of unit 1 turn.
- 4. Loosen 2 screws near PTT switch 1 turn.
- 5. Remove 4 black screws on back of unit.
- 6. Lift bottom of front cover .25 inch, slide it down .25 inch, then lift
- front cover up 1 inch.
- 7. Disconnect plug on 4 wires coming from the speaker.
- 8. Lay front panel on table up-side down being careful of the flex circuit.
- 9. All mods are done to the back of the front panel. Notice places for 5
- axial diodes, which I will call 1 through 5, 1 being nearest the display.
- Add/remove diodes so there are diodes in positions 3 and 5. This will
- open up receive coverage for VHF & UHF and enable keyboard entry of the
- 10 MHz digit.
- 10. Notice 4 surface mount resistors slightly left of center directly above the
- speaker, lined up in a row. Solder the anode (the side without the bar)
- of two diodes to the right side of the lower of the four caps. Now find
- the CPU. It's the PGA under the shield near the top of the board. Find
- the row of pins on the CPU nearest the speaker. Notice the the 8th pin
- from the right has a thicker trace coming from it. Now notice that there
- are small solder pads about .25 inch toward the speaker on both the fat
- trace and the two traces to the right of it. Solder one each of the
- cathodes of the 2 diodes to the solder pads on the two smaller traces.
- This will open up the transmit for VHF & UHF.
- 11. Put unit back together in reverse order.
-
- This procedure worked for my unit (and many others), but I can't
- guarantee it will work for yours.
-
- Bill Pherigo
- WR0Y
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