[AMPS] 8877 amp failure

[Steve Bookout]

Thanks Phil,

I've already mounted them on a piece of plexiglas, so that should not
happen again.  

It was not a nice experience.  Happened while running on 40 during the WPX
CW contest.  Lost my composure and  lost my frequency.

73 de Steve, NR4M

At 04:59 PM 1/3/00 , Phil Clements wrote:
>
>> The original problem was that the HV took a short cut thru the side of a
>> Millen HV connector to the chassis.  My B+ surge resistor did it's job but
>> lost it's life in the process.  Apparently, this is when the zener went
also.
>
>There are two types of Millen HV connector users when dealing with < 2500v.
>Those who have had a big bang, and those who will do so soon.
>
>I use them all the time here with voltages < 6000 by taking two precautions:
>
>1. Never use the yellow ones..they are not made of the same stuff as the
>    black or red ones.
>
>2. Cut the middle hole over-sized; 1/16 inch less diameter than the width
>     of the chassis connector. Fabricate a sheet of teflon or plexiglass with
>     three holes in it to match the connector and install between the
connector
>     and the chassis.
>
>
>Works good, lasts a long time!
>
>(((73)))
>Phil, K5PC
>
>
>
>
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---------------------------------------------
Steve Bookout, NR4M (ex NJ4F)
Rapidan Data Systems

'DX4WIN...The way logging programs should be!'
Free demo at http://www.erols.com/pvander

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