[Elecraft] Shack equipment noise

[Alan Slusher]

If this is the case one would need to open the outlet box and replace the 
"exploded" MOVs.
Or purchase a new outlet strip, open it up, and install an MOV across each 
pair of wires (three in all).  Try Radio Shack.

Cheers,

Alan V31FA

----- Original Message ----- 
From: "Jim Wiley" <jwiley at alaska.net>
To: "Keith Heimbold" <ag6az at hotmail.com>
Cc: <Elecraft at mailman.qth.net>
Sent: Saturday, December 10, 2011 8:02 PM
Subject: Re: [Elecraft] Shack equipment noise


> May not have been your radio at all, but instead might have been a
> "surge protected" multiple AC outlet box.  I have a few Tripp-Lite
> "Isobar" outlet boxes, and if they "catch" a surge, they will make a
> VERY loud bang!  Fooled me for a while until I figured out what was
> happening.  Sounds like some has let off a .22 rifle shot under the
> operating bench. Dissipating the energy from a big surge take some
> doing, and the result is often a very loud bang. Might that have been
> what you heard?
>
>
> - Jim, KL7CC
>
>
>
> Keith Heimbold wrote:
>> Wayne-
>>
>> I am a bit embarrassed about something that just happened in my shack 
>> because i think i just blew up my external 6m preamp.
>>
>> I was putting in line my six meter preamp and using a db15 Y connector 
>> with my Yaesu Quadra amp on the other connector. I was not transmitting 
>> and just getting it connected and then I heard a super loud pop.
>>
>> I disconnected eveything and then tested the transceiver and the amp. 
>> The K3 is fine but the amp was locked. I turned off the amp and restarted 
>> it and and it was fine.  I reconnected the preamp and put the antenna in 
>> direct line with the K3 disconnecting it from the amp. The preamp when 
>> energizes reduces the signal strength. I think the pop came from the 
>> preamp. It is hard for me to isolate the noise source because I had my 
>> headset on. For sure it was working for about 20 seconds and then the pop 
>> occurred. It scared my dogs and myself it was so loud.
>>
>> I am not sure how I can test the preamp to see if it indeed blown. Any 
>> thoughts would be appreciated.
>>
>> Thanks,
>>
>> Keith
>> AG6AZ
>>
>> Sent from my iPhone please excuse typos
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