Mike,
Ignoring the mode in use, into a dummy load the K3 is shutting down at
power in excess of 40W on tune.
I'm using a 40A PSU and a new factory made power lead. I am beginning
to suspect the PA.
73
Colin, G3PSM
On 25/07/2017 17:24, Mike Flowers wrote:
If you have a dummy load, try running JT8 or JT65 into that at your usual
power. If problem does not reoccur, then likely RFI is the culprit.
If it does reoccur, then likely the K3 is having issues.
- 73 and good DX de Mike, K6MKF, Past President - NCDXC
-----Original Message-----
From: [email protected] [mailto:elecraft-
[email protected]] On Behalf Of Colin
Sent: Tuesday, July 25, 2017 9:15 AM
To: [email protected]
Subject: [Elecraft] Fwd: Re: K3 SHUTTING DOWN OPERATING JT65
Buddy/Mike, further to my earlier email the current on receive is actually
1.05A
as measured on a digital multimeter and not 5A as indicated on the PSU
analogue
meter.
Of course this doesn't solve the immediate problem.
73
Colin, G3PSM
-------- Forwarded Message --------
Subject: Re: [Elecraft] K3 SHUTTING DOWN OPERATING JT65
Date: Tue, 25 Jul 2017 16:01:10 +0100
From: Colin <[email protected]>
To: [email protected]
Mike, I am experiencing a similar thing. I had a session on FT8 a few
days ago and my K3 shut down completely, in fact it blew a 20A fuse on my
alternate 20A PSU but just shuts down on my 40A supply.
One thing I notice is that it appears to be drawing nearly 5 Amps on
receive
which is excessive and one occasion while I was testing actually shut down
on
receive.
It isn't the DC lead as I have replaced that with a factory supplied item.
I'm still working on it but unless the experts in this group have any
ideas I will
attempt to re-invent the wheel.
73
Colin, G3PSM
On 23/07/2017 03:17, Michael Walker wrote:
Hi Buddy
I can thing of 2 things. Overheating .. not likely since usually the
RF section shut downs.
RF getting into the power supply. Grounding might not make a
difference.
RF Chokes on the power supply DC cord might help.
Oh, the 3rd thing, Is your power supply up to the task? Might it be
failing? Throw a volt meter on it.
Mike va3mw
On Sat, Jul 22, 2017 at 9:28 PM, buddy s <[email protected]> wrote:
i am using wsjt-x software for jt65 using my k3. after operating for
approximately 2 hours today, i answered a cq, and after 30 seconds
the k3 shut down completely. i waited a few minutes and changed
antennas. the k3 powered up, and i tried again. same result,
shutdown after 30 seconds of transmitting. my power is set to 30
watts, and i am using a kat500 with both antennas.
any suggestions, any questions?
73 de
W3BS, Buddy Spiegel
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