Hello
(On behalf of a friend, Gerard, familiar with his K3, but not so much with
the English language )
When he sets the power of his K3 at 110, 100, or 90 watts, it decreases
gradually down to 50 watts, CW or SSB.
If set to 80 watts, no change !
Has anyone an idea ?
Best regards to everyone
Check out the antenna. Maybe the radio is 'folding' back the power due
to a serious antenna mis-match. The default foldback level may be 50
watts, and at power levels of 90, 100 or 110, it sees too high a VSWR
and protects itself. But at 80 watts, it isn't as bad so it plods on,
still
Following Eric's report of having his KAT3 hang in a strange state after
powering down without first pushing the K3 POWER button, I queried Wayne
about how this could happen.
He pointed out that can be the case if an EEPROM write operation happens to
be in progress when the power is removed. He
Next time I powered down by pushing the K3 power button instead of the Big
Switch. This time when I powered the K3 on again it remembered all settings.
Looks to me like the K3 doesn't store all settings unless its power switch
is pushed to shut down. Is this how it is supposed to work?
The
To: elecraft@mailman.qth.net
Sent: Sunday, March 01, 2009 12:58 AM
Subject: [Elecraft] K3 power loss: Last settings forgotten
I just shut down the station by pulling the big switch and then turned it
back on soon after. Of course I had to push the power button on the K3 to
get it going again
01, 2009 7:35 AM
Subject: Re: [Elecraft] K3 power loss: Last settings forgotten
What you experienced is not a bug. Do you turn off your PC by unplugging
it?
The K3 has a CPU in it, and in order to clean up and go to a power down
state, it needs to be RUNNING to stage itself down. Ever try
To: Guy Olinger, K2AV; elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 power loss: Last settings forgotten
Guy,
I am very familiar with the internals of computers, more than enough to know
that these behaviors can be expected unless one pointedly designs to
eliminate them, and that *can* be done
@mailman.qth.net
Sent: Sunday, March 01, 2009 11:04 AM
Subject: Re: [Elecraft] K3 power loss: Last settings forgotten
And the K3 is pretty resistant to the sort of craziness some CPU's
experience with unexpected shutdowns.
I'm not aware of anyone who has had a crash of the system due to the
power
/KPA3_12V_Sense_Modification_Rev_A.pdf)
Ron AC7AC
-Original Message-
From: Erik N Basilier [mailto:ebasil...@cox.net]
Sent: Sunday, March 01, 2009 10:44 AM
To: Ron D'Eau Claire; elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 power loss: Last settings forgotten
Ron, I have been shutting down the external power
Claire r...@cobi.biz wrote:
From: Ron D'Eau Claire r...@cobi.biz
Subject: Re: [Elecraft] K3 power loss: Last settings forgotten
To: 'Erik N Basilier' ebasil...@cox.net, elecraft@mailman.qth.net
Date: Sunday, March 1, 2009, 1:57 PM
Interesting Eric.
That's one you might post to k3supp
: [Elecraft] K3 power loss: Last settings forgotten
Ron:
I have never had this problem. I often operate with the power supply off.
I do have 75 AH of batteries connected to the K3. I sometimes operate for 3
to 5 days (intermittently) before turning on the power supply. Just my
backup plan.
73, Ty
01, 2009 11:57 AM
Subject: RE: [Elecraft] K3 power loss: Last settings forgotten
Interesting Eric.
That's one you might post to k3supp...@elecraft.com. I've not seen it here
and I suspect Wayne would be surprised to see it. (He monitors that list
carefully.)
Even though I frequently hit
Erik N Basilier wrote:
I am very familiar with the internals of computers, more than enough to
know that these behaviors can be expected unless one pointedly designs
to eliminate them, and that *can* be done. There is no fundamental
One factor to consider here is that the flash memory has
I just shut down the station by pulling the big switch and then turned it
back on soon after. Of course I had to push the power button on the K3 to
get it going again. Then I noticed what I never noticed before: The K3,
while still tuned to the same 40m cw frequency, came up in LSB mode, with
On all bands except 10m my K3 transmits down to 9.5V with pretty reasonable
supply current. This is commendable. That K3 requires 13.5V to shut down not
as often on 10m indicates a problem. I tried new KPA3 and it was more less
the same . Our problem could be in a bad capacitor in LPF for 10m or
Hi,
I am not out of the woods with respect to the K3 reducing power while
transmitting as I experienced during the 2008 December 10m contest. But I am
standing on the edge of the forest.
The K3 has built-in protection for the 100w power amplifier and
automatically reduces power when some sensor
During the 2008 10 meter contest this past weekend I experienced some power
loss during USB transmissions. The K3 was set to 100 watts, more or less.
The K3 firmware is the 2.58/1.94 vintage. In responding to another party
calling CQ I would send my call sign, N0YE. The N0 would be transmitted
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