[Heathkit] Tom Cat Urine

[Bill Guyger]

409 has also been known to attack plastic surfaces such as meter and dial covers. I screwed up a SB-301 that way and had to polish the meter and dial cover with tooth paste to buff out the damage. A real pain in the ....!

Bill AD5OL

>>> Peter Burbank <peterlee at qx.net> 07/19/05 10:16PM >>>
At 11:00 PM 7/19/2005, SBJohnston at aol.com wrote:

>   Scrub the covers separately with the usual cleaners like 409.  Leave
>the chassis and covers out in the hot sun to dry - thoroughly - before
>applying power again.

409 is ok for covers but not for insulators. I washed a J-38 key base with 
it and
it was useless for grid block keying after that. A friend told me that 409 was
heavily ionic. I'm not a chemist so maybe someone can verify this.
73 Pete NV4V


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