copied from the Internet:
Newsgroups: rec.radio.amateur.misc
From: jon@Turing.ORG (Jon Gefaell (KD4CQY))
>> My Icom ICW2A can be modified via the keyboard (no cutting diodes) to
>> receive 100MHz - 1.2GHz.

Ah, the truth of the matter is that with the keyboard mod you can receive
(turn power on while holding 3, B and # keys

~108-136 AM (Air band)
~136-174 FM
~450-950 FM (including Cellular W/ a 30Kc step available)

It works quite nicely to boot...
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more info copied from the internet:
From: Jim_Sollows@mindlink.bc.ca (Jim Sollows)
AH the truth of the matter is that if you set PL to 100 you can enter and
recieve any frequency between 100MHz and 999MHz, then by rotating the tuning
dial you can push the radio beyond the 1GHz mark and keyboard enter all the way
to 1.2GHz.

Here is the complete Mod....try it for yourself.

Hold Down 3 # B
Turn power on
Hold for 30 seconds
Enter Set Mode
Use ^/Scan key to select PL
Use tuning dial to change the PL Setting as below:

          PL = 1 range 140.000 to 149.995
          PL = 10 range 100.000 to 199.995
          PL = 100 range 100.000 to 999.995
          note reception above 999.995MHz and below 100.000MHz is
          possible but very poor selectivity.
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Note: I haven't tried or verified this, proceed at your own risk  WA2ISE
/EX