copied from UUCP:
Newsgroups: rec.ham-radio.packet
Subject: Re: PK-88 RFI problems

> Hardware:     AEA PK-88, battery powered, out of warranty
> 
> Problem:      With no cables except power connected, the PK-88
>               generates enough RFI on 145.01 to open the squelch on
>               my Kenwood TH-215A (squelch set to max; duck) about
>               30 feet away.  

AEA says the clock on the PK-88 does indeed put out a birdie on 145.01, but
they do have a mod you can make to fix the situation. The clock frequency is
controlled by C38, a 33 pF capacitor. If you change this to an 82 pF cap
(use a silver mica cap), it will lower the clock frequency enough to move
the birdie out of the packet band.  (Hopefully, you won't RFI your use or
your neighbor's use of another part of the 2M band! WA2ISE).

If you have any trouble, call Ryan at AEA customer service at 206 775-7373.

Good Luck,

Kevin Redden, WB2ZLF
AT&T Bell Labs, Lincroft NJ