[AMPS] Technical Question #1

[km1h@juno.com]

On Wed, 20 May 1998 19:40:12 -0500 bob alexander <realex@flash.net>
writes:
>Karl,
>The main cause of damage to the band switch in the SB220 is
>Parasitics!  These parasitics get into the fingers of the operator
>who is trying to tune the SB220 and causes him/her to rotate the
>band switch instead of the loading cap while full drive is applied.
>The resulting arcing and sparking converts part of the switch to a gas
>which is inhaled by the operator who has just had a sudden rather
>sharp intake of breath.  This gas remains in the operators system
>for years, even decades, and eventually causes the operator to do 
>the same thing.  
>Most operators never realize the physical layout of the SB220
>front panal is the primary cause of these parasitic infections of
>the fingers.
>
>Seriously, show me a longtime SB220 owner who says this has never
>happened to him and Ill show you someone with a 20 year old virtually
>unused amp.
>73, Bob, W5AH


The main reason the old K1OX multi-multi contest station removed the
bandswitch knob from his SB-220's Bob!  Some operators do strange things
at 2AM.

73  Carl  KM1H

>

_____________________________________________________________________
You don't need to buy Internet access to use free Internet e-mail.
Get completely free e-mail from Juno at http://www.juno.com
Or call Juno at (800) 654-JUNO [654-5866]

--
FAQ on WWW:               http://www.contesting.com/ampfaq.html
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com
Search:                   http://www.contesting.com/km9p/search.htm