Today I was playing with my K3 AGC settings to learn more about them. At
some point I had placed my Heil Pro Set Plus on top of the K3. A strong
signal presented itself resulting in a increased audio level from the K3’s
speaker. Unfortunately VOX was still on and the K3 started transmitting. I
I had a similar oops with my K3, a faulty cable/adapter on the KEY
input socket caused my K3 to go to full CW carrier output on 6m, in a
hurry to stop the transmission, I turned the power supply mains off as
the K3's controls seemed to be locked... Big mistake, the uncontrolled
power down of
Thank you Dave for your reply, but it was a entirely different problem.
I'm embarrassed like you won't believe. Before posting my problem on the
reflector I thought I had checked everything to make sure that is was a
genuine problem. After an hour of doing something else, I turned the K3 back
on
Glad to hear it was such an easy fix, Maarten! But you do bring up an issue
that has appeared on the reflector before: the K3 *wants* an orderly
shutdown sequence to avoid unusual and troublesome issues.
An orderly shutdown requires the POWER button be pressed on the K3 before
the power supply is
This brings up the question of what is a good UPS for the K3 and usually
attendant computer?
I live in a rural area and I have the entire house on a 15 KW backup
generator but it requires 32 seconds to kick in. This morning we lost
power for 5 seconds and I was fortunate the brains didn't get
Sid -
Any good computer UPS will keep the K3 running for 32 seconds. I wouldn't
transmit during that time, however, unless you allow for that in your UPS's
capacity. I recently bought a large-capacity APC unit for our plasma TV to
isolate it from the mains (Florida is lightning capital of
Ron D'Eau Claire wrote:
An orderly shutdown requires the POWER button be pressed on the K3 before
the power supply is shut down.
---
Ron,
Is there any interface available on the K3 which would allow an external
automatic protective shutdown
or shutting off the supply.
73,
Ron AC7AC
-Original Message-
From: Geoffrey Mackenzie-Kennedy [mailto:gm4...@btinternet.com]
Sent: Sunday, June 07, 2009 9:11 AM
To: Ron D'Eau Claire
Cc: Elecraft Discussion List
Subject: Re: [Elecraft] K3 not transmitting anymore
Ron D'Eau Claire wrote
From the owners manual (page 44 in rev D2):
Remote Power On/Off
A remote-control system can pull the POWER ON line to ground (ACC
connector, pg. 18) to turn the K3 ON. To turn it OFF, the controller
must send the K3 a PS0; remote-control command via the RS232
interface, then deactivate
Just felt that a word of reassurance may be worthwhile. My older K3 (#228) has
now worked about 35000 QSOs in Africa with appalling power problems - switching
off the rig before the PSU would be a luxury indeed. Also losing power while
transmitting has been quite frequent (and unavoidable). The
Hi Joe,
Give it half a second (literally). In practice it should never take
more than 100-200 ms, but this will give you some margin.
I'll also note this in the Owner's Manual.
73,
Wayne
N6KR
On Jun 7, 2009, at 9:45 AM, Joe Planisky wrote:
From the owners manual (page 44 in rev D2):
Joe,
Many thanks for your help.
I had been toying with the idea of buying a K3 for use at another QTH, but
there the mains supply is not 100% reliable. If bad things can happen if the
13.8V supply shuts down as the result of a mains outage, that is serious.
73,
Geoff
GM4ESD
Joe Planisky
Personally, I don't see that as a major jeopardy. A UPS is fairly cheap
(certainly in comparison to a K3), kicks in within milliseconds, and
should easily give you enough time to do an orderly shutdown. Most
modern UPS's link to the computer via USB and will provide an orderly
shutdown to
Keep in mind that I've powered down my K3 many, many times by pulling the
plug, not hitting the POWER button, with no problems whatsoever.
That's why I asked Wayne about it when the issue came up before and he said
that it is *possible* for data to be corrupted *if* a write process is going
on
I am using an Alinco DM-330M power supply. Across the output of the power
supply I have a 26 AH battery. If the AC power quits I have many hours to shut
down the K3.
I have the output of the power supply set to 13.8 V. Should it be slightly
higher? How much?
Sometimes I do not even turn on
15 matches
Mail list logo
