's.)
>
>
>> On 11/07/2020 20:40, elecraft-requ...@mailman.qth.net wrote:
>> From: Frank O'Donnell
>> To: "elecraft@mailman.qth.net"
>> Subject: [Elecraft] KX3 power out
>> Message-ID: <07eb80bf-c36b-e2f8-b4f8-52144e84b...@inkbox.net>
>>
ecraft-requ...@mailman.qth.net wrote:
> From: Frank O'Donnell
> To: "elecraft@mailman.qth.net"
> Subject: [Elecraft] KX3 power out
> Message-ID: <07eb80bf-c36b-e2f8-b4f8-52144e84b...@inkbox.net>
>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Af
I also have the KX3 with 2m module and ATU.
My understanding is Auto is used to tune the antenna but you then
switch to MAN to operate after the ATU tunes to your antenna (my
KXPA100/KXTA100 works the same way).
My original 2m module (kit) did not reach full output so I returned
the module
On 7/11/20 8:40 PM, Mark Goldberg wrote:
The KX3 will definitely cut way back on power out if it sees a
mismatched load or a line voltage drop. I use my KX3 to tune a
screwdriver antenna. I normally set the power out to about 3W, but
sometimes forget and leave it at 15W. When matched, it puts
On the KX3 display, the voltage is 14.3v at idle, 13.8v key-down. At the
power supply, 14.5v idle, 14.15v key-down.
On 7/11/20 7:51 PM, Brian Hunt wrote:
What is the key-down voltage seen on the KX3 display? Measure the regulated
voltage at the PS under the same conditions. Is it OK? I had
On Sat, Jul 11, 2020 at 7:06 PM Frank O'Donnell wrote:
> As for Walter's point about the ATU, the results are mighty odd. I just
> set the KX3 to 40 meters with 15 watts out, appropriate slug in the Bird
> 43, set ATU to bypass and started keying. The power out dropped to about
> 5w. I then set
What is the key-down voltage seen on the KX3 display? Measure the regulated
voltage at the PS under the same conditions. Is it OK? I had power control
problems on my K3 until I solved the sagging voltage problem. GL & 73, K0DTJ
> On Jul 11, 2020, at 12:42, Frank O'Donnell wrote:
>
> Always
I believe that the KX3 does not have bypass relays in its ATU.
Instead, when you select "Bypass", it sets the ATU to have no C
or L added. If the ATU is not functioning correctly, perhaps
with a stuck relay, it may still be affecting the measurements.
73 Bill AE6JV
On 7/11/20 at 10:05 PM,
This procedure (manual, or automated via the KX3 Utility) applies only to 160-6M
Grant NQ5T
> On Jul 11, 2020, at 10:05 PM, Frank O'Donnell wrote:
>
> On 7/11/20 1:19 PM, Grant Youngman wrote:
>> As a start, I’d recommend running through TX GAIN calibration using the KX3
>> Utility …
>
>
On 7/11/20 1:19 PM, Grant Youngman wrote:
As a start, I’d recommend running through TX GAIN calibration using the KX3
Utility …
Good suggestion. If a 2-meter module is installed, as is the case with
mine, I wonder if the automated calibration using the KX3 Utility flies
through all the
You should not need an ATU with a dummy load. Put the ATU in bypass.
Did you send dits or a constant carrier? I recommend using RTTY or FM to get a
constant carrier.
wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)
> On Jul 11, 2020, at 12:42 PM, Frank O'Donnell
As a start, I’d recommend running through TX GAIN calibration using the KX3
Utility …
Grant NQ5T
> On Jul 11, 2020, at 3:42 PM, Frank O'Donnell wrote:
>
> Always something else I remember just after hitting send.
>
> The KX3 is running off the Pro Audio Engineering PAE-Kx33 power supply,
On Sat, Jul 11, 2020 at 12:41 PM Frank O'Donnell wrote:
>
> After a fair time of non-use, today I got out my KX3 and started working
> through configuration checklists. Among other things I thought I'd check
> the power out.
>
> For this test I used a Bird 43 and MFJ-260C dummy load. For HF I
Always something else I remember just after hitting send.
The KX3 is running off the Pro Audio Engineering PAE-Kx33 power supply,
plugged into the 9-15 vdc connector.
On 7/11/20 12:40 PM, Frank O'Donnell wrote:
After a fair time of non-use, today I got out my KX3 and started
working through
After a fair time of non-use, today I got out my KX3 and started working
through configuration checklists. Among other things I thought I'd check
the power out.
For this test I used a Bird 43 and MFJ-260C dummy load. For HF I used a
Bird 2-30 MHz 25w element, and for 2m a 100-250 MHz 10w
John,
The KX3 (or the K3 or K2) will not control its power output properly
unless you drive the audio sufficiently.
The ALC meter on the K3 and KX3 is a combination of an audio level
meter and ALC meter. Below 5 bars indicated is really the 'no ALC'
range. So adjust the soundcard audio
Thanks Walter. I think I understand now.
What is the loop bandwidth of the power control loop?
Thanks.
John, kx4o
On Mon, March 2, 2015 05:54, Walter Underwood wrote:
No. Most likely the power varied as it was hunting for the right level.
It probably started low then increased power slowly
That is a question for the designers, but it clearly adjusts much, much more
slowly than amplitude modulation frequencies (to avoid distortion).
This is a closed loop power control, like commercial transmitters. Most amateur
transmitters are fixed gain, so this is a surprise for nearly every
Hello all,
I had a successful binge of RTTY this weekend in the NAQP using the KX3,
audio interface and N1MM (MMTTY).
This was hastily assembled after the audio interface arrived Saturday.
Things came together splendidly whereupon I made QSOs with west coast
stations from Virginia. Only
barefoot.
73,
Barry
K3NDM
- Original Message -
From: John k...@hamradio.me
To: elecraft Elecraft@mailman.qth.net
Sent: Monday, March 2, 2015 12:13:05 AM
Subject: [Elecraft] KX3 - Power out vs. ALC bars
Hello all,
I had a successful binge of RTTY this weekend in the NAQP using
Is it safe to say my very low input audio level was compensated by the
KX3's power control loop to yield 5 watts out (the actual radio power
setting)?
It's hard to shake my Icom digital interface habits.
Thanks.
John, kx4o
On 3/2/2015 12:34 AM, k3...@comcast.net wrote:
John,
The manual
No. Most likely the power varied as it was hunting for the right level. It
probably started low then increased power slowly throughout each transmission.
wunder
Walter Underwood
wun...@wunderwood.org
http://observer.wunderwood.org/ (my blog)
On Mar 1, 2015, at 9:44 PM, John k...@hamradio.me
, March 2, 2015 12:44:07 AM
Subject: Re: [Elecraft] KX3 - Power out vs. ALC bars
Is it safe to say my very low input audio level was compensated by the KX3's
power control loop to yield 5 watts out (the actual radio power setting)?
It's hard to shake my Icom digital interface habits.
Thanks
23 matches
Mail list logo
