YAESU 757GX

Open the radio and flip an unmarked but quite accessible switch.

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KENWOOD 2600

"All-Band  Transmit Modifications"

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.


ICOM IC-720

Transmitter is unlocked by cutting 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.

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).