[Elecraft] K2/100 RFI problem using Astron 20A

[Paul Heller]

>So in the end I have a 17AmHr Gell pack here that I float across the PSU’s
>output this will help the PSU cope with the odd high current pulse and also
>act as a standby Supply in the event of a mains failure.
>
>
>  
>
That's what I do, except that the battery is bigger (80 AH or so).  My 
theory is that the battery will handle the need for intermittent current 
spikes better than the power supply alone, plus if the power supply does 
something nasty, like lose regulation and decide to put out a high 
voltage or some spikes that might zap the gear, the battery should 
absorb that and hopefully blow the power supply fuse.  This also 
provides a nice emergency power source - I ran my K2/100 from home 
during field day weekend just from the battery, power supply unplugged, 
and had enough battery voltage left to continue for a while if I'd 
wanted to after two days of CW operation (much longer than that and it 
would be time to crank up the generator, but two days isn't bad).

/Paul
 W3PH

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Paul Heller
ph at his.com