Re: [Elecraft] Power spike early K3

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Re: [Elecraft] Power spike early K3

an.qth.net On Behalf Of N2TK via Elecraft Sent: Saturday, 20 May, 2023 15:51 To: m...@sj2w.se; elecraft@mailman.qth.net Subject: Re: [Elecraft] Power spike early K3 I had the same problem with the K3/KPA1500 combination. I recalibrated the K3. Then I made sure I don't run the K3 at exactly

Re: [Elecraft] Power spike early K3

45 am Subject: [Elecraft] Power spike early K3 Hi, We have an early serial K3 which has got an issue with power spikes. I have done a TX gain calibration without it making a difference. The spike happens mainly when you have changed to a new band and during the first transmission. After that the spike

Re: [Elecraft] Power spike early K3

I had a similar problem and traced it to voltage sag under load at the K3. The power supply was good under load but there was too much loss in the stock cable which was wired directly to the PS. I replaced it with a heavier, shorter cable. I found that I had to run the TX gain calibration twice

Re: [Elecraft] Power spike early K3

Hi Mike, I saw that you had posted a similar question in January 2023 and had some suggestions including running the TX Gain calibration, which you did, but apparently without effect on the spiking. There have been numerous reports of TX power spikes on first dit or first voice sound. Some found

[Elecraft] Power spike early K3

Hi, We have an early serial K3 which has got an issue with power spikes. I have done a TX gain calibration without it making a difference. The spike happens mainly when you have changed to a new band and during the first transmission. After that the spike is a lot smaller and not much of an issue.