I am trying to learn the behavior of the K3 ATU Tune. I am switching between
two loads. One is dummy load with SWR of about 1.1. The other is a mismatch
on an antenna with a measured SWR of about 4.9 (as read off of the LP-100A
meter). I am attempting to use the ATU Tune button to bring
Phil,
The LP-100A (or any external SWR/power measurement device) is not
accurate when you are using the KAT3 (K3 internal ATU) since it is
on the *output* of the tuner and not the *input*.
A tuner *DOES NOT CHANGE THE SWR BETWEEN THE TUNER AND ANTENNA* it
only changes the SWR seen by any device
Phil,
Actually you can believe both the K3 and the LP-100A.
The KAT3 is inside the K3, and the SWR it reads is that at the INPUT to
the tuner. Tuning the internal K3 tuner will *not* change the SWR on
the outside of the K3, it will still be whatever you read on the LP-100A
- that is the
About my second question on the different readings of the K3 ATU and the
LP-100A. Gosh Darn It -- I knew that. I was not thinking. I had been doing
so many different measurements this morning that when that came about (the
different readings), I was surprised but it was obviously not a
The thing that prompted me to ask send the message was the first
question about the fold back on power and if it needs the K3 ATU
Tune button to be pressed to reset even though the load is well
matched and should not fold back at all.
I don't understand this question. If you have engaged
Hi,
Something curious has happened to my K3 SN 3975 - when I tap the ATU
Tune button the power out shown on an external power meter is full
power, a little over 100W. The K3 power out indicator also kicks up
to full power. I have the unit set to 50W and when I key it normally
(CW) it shows
* On 2010 29 Oct 15:45 -0500, L. D. Ingram wrote:
Hi,
Something curious has happened to my K3 SN 3975 - when I tap the ATU
Tune button the power out shown on an external power meter is full
power, a little over 100W. The K3 power out indicator also kicks up
to full power. I have the unit
The power level used by the ATU Tune process is internally set to 5/10W. As
for the K3 power display, during the tuning process, the scale changes from
a max of 100W to a max of 10W. I can't say why your external meter appears
to indicate 100W, but is it possible that your meter is auto-ranging
Hi again,
Stan KR7C hit it on the head, the external meter is autoranging and
the output is 10W not 100 (red face on this).
Thanks Stan and others who answered.
Larry Ingram AG4NN
__
Elecraft mailing list
Home:
Hello,
Actually ATU TUNE is configured per band. Is there any option to have it OFF
in all bands and not to be remembered?
Something like SPLT SV (yes/no) for the SPLIT mode. But I couldn´t find the
same for ATU TUNE.
Thanks,
Jorge
CX6VM
-Mensaje original-
De:
-Mensaje original-
De: Greg - AB7R [mailto:a...@cablespeed.com]
Enviado el: Jueves, 15 de Abril de 2010 11:01 a.m.
Para: 'Jorge Diez - CX6VM'
Asunto: Re: [Elecraft] K3 ATU TUNE per band only?
Jorge,
Just set the ATU to Bypass on the bands (all if that's what you want) and it
will
remember
K3 remembers whether ATU is engaged or bypassed per ANT1/ANT2 per
band, and remembers L/C settings per band. You are asking it
specifically to return to bypass when you leave a band?
It's not like you have to do some complicated thing down in the menus.
Front panel button HOLD ATU TUNE toggles
Is there an output available for the K3 to key a remote ATU via the Tune
feature/button in the absense of an internal ATU?
Regards,
Dick - KA5KKT/4
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the
This would be nice. I used the tune function that my Icom radios had
that keyed them up at 10 watts to activate my SGC antenna coupler.
The low power saves the relays as well as reducing interference. I
bet it's on the firmware enhancement list already.
Dave W5DHM
On 9/6/07, Edward Dickinson,
I too would like this and rather hope Elecraft have already incorporated it.
I have a long wire tuned with an SG237 outside the shack with its coax
coming inside. I am planning on continuing to use that when at home (and
probably put a 1/2 G5RV on the other Ant in).
I currently have an FT-857
The ATU TUNE would also be great for use with an external amplifier, along
with an external high power autotuner (Palstar AT-1K Auto, MFJ-994B/998, LDG
AT-1000, etc). The external tuner could apply a Request low power CW
signal output like the IC-706 (and others) does, and the K3 could respond
16 matches
Mail list logo
