Re: [Elecraft] KXPA Power Output

vin.sto...@mediacombb.net> Date: 04/17/2016 4:18 PM (GMT-08:00) To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KXPA Power Output WRU nailed it. I missed it in the original posting. You're losing 1.7 volts in 8ft of that "#14 wire". That's about as bad as it gets. Why did

Re: [Elecraft] KXPA Power Output

:08 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KXPA Power Output I see your points. I'm just a little more conservative (paranoid) than others. I like a little headroom. I've got a pair of RS-35M's that are 24 and 20 years old. I can't kill em. On 4/17/2016 6:47 PM, Ron D'Eau Claire

Re: [Elecraft] KXPA Power Output

] Sent: Sunday, April 17, 2016 5:05 PM To: Ron D'Eau Claire; Elecraft Reflector Subject: Re: [Elecraft] KXPA Power Output Glad that a 20 A supply works for you, but the specs say: "12-15 Vdc (13.8 V nominal), at least 24 A peak capacity. About 1 mA parasitic drain current whenever dc

Re: [Elecraft] KXPA Power Output

a switcher or a cheaper supply. I use the Elecraft supplied power cables on everything. 73, Ron AC7AC -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Kevin Stover Sent: Sunday, April 17, 2016 4:19 PM To: elecraft@mailman.qth.net Subject: Re: [Elec

Re: [Elecraft] KXPA Power Output

; cheaper supply. > > I use the Elecraft supplied power cables on everything. > > 73, Ron AC7AC > > -Original Message- > From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Kevin > Stover > Sent: Sunday, April 17, 2016 4:19 PM > To: e

Re: [Elecraft] KXPA Power Output

, April 17, 2016 4:19 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KXPA Power Output WRU nailed it. I missed it in the original posting. You're losing 1.7 volts in 8ft of that "#14 wire". That's about as bad as it gets. Why didn't you use the power cable supplied with the amp

Re: [Elecraft] KXPA Power Output

WRU nailed it. I missed it in the original posting. You're losing 1.7 volts in 8ft of that "#14 wire". That's about as bad as it gets. Why didn't you use the power cable supplied with the amp? I believe it's #12. What kind of power supply is running the amp? It has to be 25 amps peak

Re: [Elecraft] KXPA Power Output

Make sure the 3db attenuation switch on the back is set to out/auto, not in. Had the same problem myself the other day. David On Sat, Apr 16, 2016 at 7:29 PM, Tom Field wrote: > I'm having difficulty getting more than about 70 to 80 watts out of the > KXPA 100. I have it

Re: [Elecraft] KXPA Power Output

> On Apr 17, 2016, at 11:44 AM, Art Nienhouse wrote: > > My rest voltage is 14.1 the key down voltage is 12.4 […]. the 14 gauge zip > power cable is what comes with a 100watt Icom the length is 4 foot there is > no loss here that I can see to cause this low power output. And

Re: [Elecraft] KXPA Power Output

*/I have found that to get a correct (calibration) done using the utility and to correct a issue with my K3 KPA500 that developed 2 years after I built it .. I needed to use this dummy load for calibration. https://www.rfparts.com/dummy-loads/dummy-50/m1426.html All my other dummy

Re: [Elecraft] KXPA Power Output

Thanks for the replies. I have gone through the procedure again. I used the calibration procedure outlined on the Elecraft Website. Some observations. With no load I have 14.63 volts coming into the KXPA 100. With the radio and amplifier on and resting, the current is approx 0.3 Amps Steps Set

Re: [Elecraft] KXPA Power Output

will need to reset the POWER control for CAL 75 on 50 MHz. 73, Ron AC7AC -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Tom Field Sent: Saturday, April 16, 2016 5:30 PM To: elecraft@mailman.qth.net Subject: [Elecraft] KXPA Power Output I'm having

Re: [Elecraft] KXPA Power Output

You need to do the 70 watt cal with at lest 14 volts at amp power pole. And use biggest and shortest cable to minimize losses. Same power setup for operation. Sent from my iPhone ...nr4c. bill > On Apr 16, 2016, at 8:29 PM, Tom Field wrote: > > I'm having difficulty

Re: [Elecraft] KXPA Power Output

Look at the actual voltage into the KXPA100 during transmit. This can happen if the voltage is below 13.8-14. I had to adjust my Astron 35 amp as at 13.5V I saw almost the same thing. -- View this message in context:

[Elecraft] KXPA Power Output

I'm having difficulty getting more than about 70 to 80 watts out of the KXPA 100. I have it connected to a KX3 with the Elecraft cable and have gone through the calibration procedure as outlined in the owners manual and in Fred Cady's excellent book. For Example if I go through the calibration