Re: [Elecraft] use the fan on the KPA 500

2011-09-30 Thread KD3RF
Thank you for a refreshing point of view on dealing with the KPA500 hum. -- View this message in context: http://elecraft.365791.n2.nabble.com/use-the-fan-on-the-KPA-500-tp6840979p6849615.html Sent from the Elecraft mailing list archive at Nabble.com. _

Re: [Elecraft] use the fan on the KPA 500

2011-09-28 Thread Ron D'Eau Claire
o:elecraft-boun...@mailman.qth.net] On Behalf Of jim danehy Sent: Wednesday, September 28, 2011 9:56 AM To: elecraft@mailman.qth.net Subject: [Elecraft] use the fan on the KPA 500 The humming of the transformer in the KPA 500 is somewhat analogous to the SWR indicator on the KPA500 showing yellow

[Elecraft] use the fan on the KPA 500

2011-09-28 Thread jim danehy
The humming of the transformer in the KPA 500 is somewhat analogous to the SWR indicator on the KPA500 showing yellow leds. The external antenna has a lot to do with the SWR. The primary's ac voltage and frequency (hz) has the same type of external affect on the transformer's humming. To assume