[Elecraft] Shack equipment noise

[Jim Wiley]

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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