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Subject:IC2410 wideband RX

I've accomplished the

wideband RX mods (cutting D8,D9, and D10). Here's how to open up the

VHF TX:

1. Remove the 12 black screws that hold the top and bottom covers.

2. Remove the covers and carefully unplug the speaker from the circuit

board.

3. Remove the 4 screws that hold the head/faceplate to the chassis.

4. With the radio right side up, carefully separate the face from the

chassis about 3/8 of an inch. Be careful of the ribbon cables!

5. Tip the face down so that you may view the backside of the head

unit.

6. Locate the three diodes along the bottom center that you cut for

wideband receive. (D8, D9, D10) Look towards the top and slightly

to the left of these diodes. You should see two, rectangular

foil runs that don't have any solder on them. They should be gold

colored. This is called a "land point".

7. BEING VERY CAREFUL OF THE SURFACE-MOUNT DEVICES THAT ARE VERY CLOSE

TO THE "LAND POINT" AND USING A SOLDERING IRON WITH A SMALL TIP,

PLACE A SMALL DROP OF SOLDER ACROSS THE LAND POINT. (and I mean a

small drop. just enough to connect the two foil tabs) Make sure you

are very careful not to accidently touch a surface-mount device

with your iron. They lift off very easily and can be a real bear to

put back into place. The smaller the iron tip, the better!

8. Reassemble the radio in the reverse order that you disassembled it.

Remember to reconnect the speaker!

When you reapply power you should be able to transmit 136-174 MHz. This

comes in handy if you are a MARS operator.REMEMBER:Transmitting outside

of the HAM bands is ILLEGAL unless it is an EMERGENCY! i.e.a matter of

life and death.

Any questions can be directed to N6YUJ @ KA6FUB.#NOCAL.CA.USA.NA

73,

Pat N6YUJ

Amsterdam

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