Re: [Elecraft] KPA1500 SWR meter

On 5/7/2018 9:18 AM, Michael Walker wrote: Move it further away, invest in headphones, etc. If it is noisy, maybe drop down 3db to 1/2 power and 1/2 the heat generation. Put the amp in another room if you can. Since I'm primarily a contester, DXer, and weak signal VHF op, nearly all my

Re: [Elecraft] KPA1500 SWR meter

cool as possible. I have no problem with the high noise levels > necessary when things get really hot. I just keep my earphones handy. > > Don, N5LZKPA1500 s/n45 > > > Sent from Mail for Windows 10 > > From: j...@kk9a.com > Sent: Monday, May 7, 2018 5:17 AM >

Re: [Elecraft] KPA1500 SWR meter

@mailman.qth.net Subject: [Elecraft] KPA1500 SWR meter Hopefully Elecraft can duplicate the apparent temperature related SWR problem and resolve it. The loud fan noise contradicts preliminary reviews. Perhaps the early testers did not run the amp in a contest environment where it heated up. There are over 125

[Elecraft] KPA1500 SWR meter

Hopefully Elecraft can duplicate the apparent temperature related SWR problem and resolve it. The loud fan noise contradicts preliminary reviews. Perhaps the early testers did not run the amp in a contest environment where it heated up. There are over 125 KPA1500's that have been manufactured so

Re: [Elecraft] KPA1500 SWR meter

ever > it is.. > > Don, N5LZ (KPA1500 #45) > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike Crownover > Sent: Sunday, April 29, 2018 8:13 AM > To: elecraft@mailman.qth.net > Subje

Re: [Elecraft] KPA1500 SWR meter

. whatever it is.. Don, N5LZ (KPA1500 #45) -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike Crownover Sent: Sunday, April 29, 2018 8:13 AM To: elecraft@mailman.qth.net Subject: [Elecraft] KPA1500 SWR meter I have noticed

Re: [Elecraft] KPA1500 SWR meter

Mike, You mention this occurs when interior temp reaches 50c (122F). Just a guess that a device in the SWR ckt or indicator driver is changing bias with temp and giving a false indication. This is really a question for Elecraft Tech Dept. I I am correct in my supposition they, already

Re: [Elecraft] KPA1500 SWR meter

Mike, Have you looked at the SWR report shown in KPA1500 Utility? Try that and see whether it shows the same as the display. There are 2 pieces to the SWR - there is the sensor part and then there is the display part. There is a possibility that the sensor is doing OK, but the display end of

[Elecraft] KPA1500 SWR meter

If you're using the subject KPA1500, the K3S is only seeing the amp input SWR. John KK9A Carl Yaffey K8NU wrote: I have experienced strange SWR indications (high SWR) when the SWR shows 1:1 on the K3S. Note: no ATU in the K3S. __

Re: [Elecraft] KPA1500 SWR meter

Mike, May I suggest you inspect all the connections in your antenna system. There are connections that may be just fine at 500 watts, but will either break down or arc over at 1500 watts. What happens if you drive the KPA1500 only to 500 watts? If it behaves the same as it does at 1500

Re: [Elecraft] KPA1500 SWR meter

I have experienced strange SWR indications (high SWR) when the SWR shows 1:1 on the K3S. Note: no ATU in the K3S. > On Apr 29, 2018, at 10:13 AM, Mike Crownover wrote: > > I have noticed that after my KPA1500 gets above 50C the SWR indicator light > starts to show intermittent

[Elecraft] KPA1500 SWR meter

I have noticed that after my KPA1500 gets above 50C the SWR indicator light starts to show intermittent high SWR. My KPA500 did not do that. I'm using resonant yagis and the digital SWR meter shows 1.1:1 and doesn't change nor does the SWR indicator on the K3S. It seems the SWR indicator lights