Re: [Elecraft] KPA 500 voltage drop on key down

2015-11-20 Thread Cliff Frescura
, November 20, 2015 7:46 AM To: Elecraft Reflector Subject: [Elecraft] KPA 500 voltage drop on key down I just set up my KPA 500 and the HV on standby is 72.5 volts. On key down, however, it drops to 48 volts and the lights in the shack noticeably flicker a bit. Would changing a the tap

[Elecraft] KPA 500 voltage drop on key down

2015-11-20 Thread Matt Murphy
I just set up my KPA 500 and the HV on standby is 72.5 volts. On key down, however, it drops to 48 volts and the lights in the shack noticeably flicker a bit. Would changing a the tap on the transformer potentially help things? Or is the real issue the voltage drop between the pole and the wall

Re: [Elecraft] KPA 500 voltage drop on key down

2015-11-20 Thread Ron D'Eau Claire
7:46 AM To: Elecraft Reflector Subject: [Elecraft] KPA 500 voltage drop on key down I just set up my KPA 500 and the HV on standby is 72.5 volts. On key down, however, it drops to 48 volts and the lights in the shack noticeably flicker a bit. Would changing a the tap on the transformer pot

Re: [Elecraft] KPA 500 voltage drop on key down

2015-11-20 Thread Jack Brindle
; To: Elecraft Reflector > Subject: [Elecraft] KPA 500 voltage drop on key down > > I just set up my KPA 500 and the HV on standby is 72.5 volts. On key down, > however, it drops to 48 volts and the lights in the shack noticeably flicker > a bit. > > Would changing a

Re: [Elecraft] KPA 500 voltage drop on key down

2015-11-20 Thread Guy Olinger K2AV
Hi, Matt, On Fri, Nov 20, 2015 at 11:13 AM, Cliff Frescura wrote: > Sounds like the amp is plugged into an outlet that is potentially > overloaded > or underrated. > > Changing the tap won't solve the problem and may damage the amp. > Precisely so! Put an AC voltmeter on the

Re: [Elecraft] KPA 500 voltage drop on key down

2015-11-20 Thread Harry Yingst via Elecraft
Is the amp running off of 240? The amp does draw quite a bit and really works best on 240 From: Matt Murphy <m...@nq6n.com> To: Elecraft Reflector <elecraft@mailman.qth.net> Sent: Friday, November 20, 2015 10:45 AM Subject: [Elecraft] KPA 500 voltage drop on key down I