copied from the Internet: From: kraft@perdita.gac.edu (Steven Kraft) Newsgroups: rec.radio.amateur.misc Subject: Re: HT receive coverage mods, IC 2SAT? Keywords: ic2sat mod Modifying the IC2SAT for extended receive is very simple if a certain diode was not installed at the factory, as was the case with my 2SAT. Turn the radio off, simultaneously press <#>,, and turn it on. (The button is not labeled, it is on the side under the wrist strap.) Release those three buttons after the radio beeps. (I think that mine beeped.) It can now receive over three large frequency ranges and will receive AM aircraft band transmissions acceptably. Experiment to find which frequencies you can get. The memory channel number will display the letter "U" to show that the PLL circuit is unlocked on frequencies that cannot be received. It will tune from 0-1300MHz but the operable ranges are not that big, its highest receiving freq is a little over 300MHz. If that doesn't work, a diode will have to be removed. It is a glass diode mounted on the PTT switch circuit board, and I think it is the only standard component in that area. It is mostly surface mount components. Standard disclaimers apply, since I cannot be responsible for whatever you may do if and when you must remove the front to look for a diode. (The owner's manual explains how to open the 2SAT.) Steven Kraft KRAFT@GAC.EDU KE9RW to other hams ==================================================================== Note: I haven't verified or tried this, proceed at your own risk! WA2ISE /EX