Hi all

Maybe my problem looks solved. Referring to suggestions I checked all coax cables. I found a cable with bad poor contact at both end plugs. K3 see very high SWR instantaneously
and it shout down.
I have not seen the problem for several hours since bad cable was replaced.

Thanks again for suggestions.

73


On 2020/06/10 7:15, Yoshida Akira wrote:
Hi all

Thanks for more suggestions, however I am not happy.
I noticed this a several times yesterday when transmitting FT8 with 50W.

I checked DX cable and connectors. It looks OK. I look at voltage, current and PA Temp with internal meter. I do not notice any significant jump just before shut down.

It is better for me to send K3/100 to JA dealer who checked everything, sometimes
replaced parts before.

BTW: my K3/100 s/n 00060  arrived on 2007/12   I still like this radio best.

Thanks

73


On 2020/06/09 11:33, Yoshida Akira wrote:
Hi all

Thanks for suggestions. All look OK to me.

Power supply is Powerwerx ss-30DV. I do not use Powerpole connector
in the front panel, instead use terminal in the back panel.

I use this power supply for another TRX also and have never noticed the problem.

73

On 2020/06/09 9:00, Yoshida Akira wrote:
Hi all

I have never seen this for many years, however I recently noticed twice
when transmitting FT8 with 100W. No alarm and error message.
When I simply push POWER button in front panel then it turns ON again.

PA temp, DC voltage and DC current looks good. I do not believe RFI
cause this problem.

Any idea ?

--
73 de aki
JA1NLX
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