copied from the Internet:
From: yoony@aix.rpi.edu (Young-Hoon Yoon)
Newsgroups: rec.radio.amateur.misc
Subject: Re: Mods for Standard/Heath desired

tucker@dlj.enet.dec.com (David Tucker) writes:

>I bought the Heath HW 2M when Heath was closing out.  Can anyone point me
>to (or supply) any mods or undocumented tricks for this radio.  Thanks.

>David / KC4ZGO

I owned the same exact radio, but it was a Japanese version.  But I think
the mod will be the same. 

Turn of the power.
Press and hold "3" then power on.  This would release any blocks on
                                   receiving.

                                      73...DE...N6ZUD/2  Young-hoon Yoon
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Note: I haven't tried or verified this, proceed at your own risk.  WA2ISE
/EX