From philabs!prls!pyramid!oracle!apple!bloom-beacon!tut.cis.ohio-state.edu!ucbvax!business.uwo.CA!bitlib Tue Feb 14 09:06:30 EST 1989 
Article 9582 of rec.ham-radio: 
Path: philabs!prls!pyramid!oracle!apple!bloom-beacon!tut.cis.ohio-state.edu!ucbvax!business.uwo.CA!bitlib 
>From: bitlib@business.uwo.CA (School of Business User Group Server) 
Newsgroups: rec.ham-radio 
Subject: mods for many radios 
Message-ID: <8902131531.AA11344@julian.uwo.ca> 
Date: 13 Feb 89 14:03:00 GMT 
Sender: daemon@ucbvax.BERKELEY.EDU 
Organization: The Internet 
Lines: 93 
 
Date:     Tue, 17 May 88 17:09 EST 
>From: <REID@IUBACS.BITNET> 
To: MBRAMWEL@BUSINESS.UWO.CDN 
 
ICOM IC-2AT, IC-02AT 
 
     Wright, Tim AL7DS: "Those Tantalizing Twos," _73_ magazine, June 
     1986 p. 60. 
 
Description of modifications requires illustrations.  Article has very 
good mod for IC-2AT, to cover portion of 150 MHz range and preserve 
ham band.  The IC-02AT modifications are valid only for units with 
serial numbers below 34000. 
 
A simpler IC-2AT mod is described in _73_, October 1981 p. 113. 
 
-- 
 
YAESU 757GX 
 
     Lert,Peter: "Bootleg HF Radios,"  _IFR_ magazine, Premiere issue, 
     1985, p. 12. 
 
Open the radio and flip an unmarked but quite accessible switch. 
 
Article also describes airborne HF antennas. 
 
-- 
 
KENWOOD 2600 
 
     West,  Gordon:  "All-Band  Transmit Modifications," _Popular 
     Communications_, March 1968 p. 60. 
 
Locate the two diodes standing on end with Teflon covering the top 
part of their leads (which at one time were soldered together, broken, 
and then resoldered).  Simply clip these two leads to unlock the 
transmitter, but be sure to reset the microprocessor by pushing the 
reset button before the set is capable of transmitting on any 
frequency at 150 MHz. 
 
KENWOOD TS-430S 
 
Unplug 3-wire plug on the RF board that mates with socket 10.  When 
looking at the top front of the radio, it's to the left front side 
right beside a larger white plug.  You'll need to carefully examine 
the circuit board and locate the number 10 with a circle around it to 
insure you have the right plug. 
 
KENWOOD 940 
 
Locate IC number 109.  Now find diode 130 and cut it for all-band 
transmit.  If you want just MARS coverage, locate IC 111 and 112, and 
snip diode 135 beside it. 
 
KENWOOD 930 
 
Modifiable; requires several jumper. Details not given. 
 
ICOM IC-720 
 
Transmitter is unlocked by snipping the light blue wire that's at the 
very end of the top hatch cover to the left middle side of the 
transceiver. 
 
ICOM IC-735 
 
To unlock the transmitter: cut diodes D33 and D34 that are standing on 
end near the microprocessor section toward the rear top of the radio. 
 
ICOM IC-745 
 
Locate the RF board on the side of the radio and cut the light brown 
wire at jack 7., which is going to pin 1.  Your transmitter is now 
unlocked. 
 
ICOM IC-751 
 
Locate the RF board on the side of the radio and cut the black wire 
going to pin 1 of jack 2.  Your transmitter is now unlocked.  (This 
mod also described in _73_, July 1985 p. 12.) 
 
ICOM M-700 Marine Transceiver 
 
Despite that the literature says, no lock-out is employed.  For ham 
frequencies on 40, 80 or 160 meters, set the mode switch to the hard 
left position of "A3," to enable the lower sideband filter (all marine 
HF uses upper sideband). 
 
-- 
Frank  W9MKV 
bitnet: reid@iubacs 
arpa: reid@gold.bacs.indiana.edu 
 
 
 
 
