Well today I had another play, 10MHz source(locked to Droitwich) and counter
left on for a couple of hours so I was happy they were stable. Tuned into my
10MHz signal and measured a tone on my frequency meter of 595Hz on a cold K3 -
now over the next 30 minutes it drifted down to 583Hz. So over
I don't think the K3 has a drift problem. but what it could be is the other
station that is listening to you is tuning his dial slightly to adjust to
get the tone or voice to where he likes it, and then when you go back to
receive you see that he is off freq. thinking that you drifted.
Ed
I don't think the K3 has a drift problem. but what it could be is the other
station that is listening to you is tuning his dial slightly to adjust to
get the tone or voice to where he likes it, and then when you go back to
receive you see that he is off freq. thinking that you drifted.
the ones
I see this problem running PSK31. My solution is to use the two
decoder windows in cocoaModem. With the one I'm using for
transmit, I never change the frequency. I chase the other guy as
his frequency changes using the other decoder window. If other
side of the QSO changes tuning to better
I see this problem running PSK31. My solution is to use the two
decoder windows in cocoaModem. With the one I'm using for transmit, I
never change the frequency. I chase the other guy as his frequency
changes using the other decoder window.
Don't need to worry about it with WinWarbler (part
Ed's experience is pretty common. When I was curious about that, I had
a similar experience. Enough to know not to ever worry about it again.
I have the TCXO. 73, Guy.
On Tue, Jan 13, 2015 at 4:52 PM, KD7PY emoss98...@msn.com wrote:
I just did a freq. calibration of my K3.
with the dial set to
.
Another culprit is having a cold shack in wintertime, the initialturn on until
warm-up can show a fair amount of thermal drift
From: Robert Sands k7vora...@gmail.com
To: K2 Elecraft@mailman.qth.net
Sent: Tuesday, January 13, 2015 1:40 AM
Subject: [Elecraft] K3 Drift
KV6X has noticed his
.
From: Robert Sands k7vora...@gmail.com
To: K2 Elecraft@mailman.qth.net
Sent: Tuesday, January 13, 2015 1:40 AM
Subject: [Elecraft] K3 Drift
KV6X has noticed his temperature controlled crystal is drifting in his K3.
I notice it too. This is a new thing. I have never seen a post about K3
drift
Guys,
Everything drifts. It is just a matter of how much and whether that
amount is acceptable for the proposed use.
I've done extensive drift measurements on the K3 and K3 with high
stability oscillator. All comparisons were made to a RB locked
oscillator. Up to three days of data
Subject: Re: [Elecraft] K3 Drift
I just did a freq. calibration of my K3.
with the dial set to 9.999.000 in usb for wwv at 10 mhz, that gave me a 1
khz tone that I sent to the computer using Spectran that will show the freq
of the audio. I was able to set thr REF CAL in the K3 to be within .03
I just did a freq. calibration of my K3.
with the dial set to 9.999.000 in usb for wwv at 10 mhz, that gave me a 1
khz tone that I sent to the computer using Spectran that will show the freq
of the audio. I was able to set thr REF CAL in the K3 to be within .03 cycle
of dead beat. I calibrated my
News to me, Bob -- but the modes you operate may
make it more or (in my case) less noticeable.
It might be good if you provided more into:
* Which modes?
* Only after an extended key-down TX period or
on receive, too?
* How much drift in what period of time?
* Do you have the
KV6X has noticed his temperature controlled crystal is drifting in his K3.
I notice it too. This is a new thing. I have never seen a post about K3
drift. Anyone had this problem??
Bob
K7VO
__
Elecraft mailing list
Home:
After 9 months of ageing my K3 # 604, I ran a cold to hot Reference
Oscillator Test.
My Reference Oscillator is the Optional 1ppm Temp Compensated Crystal
Oscillator (KTCXO3-1).
This TCXO came with a Factory calibration data sheet which shows
frequency verses temperature over a wide range.
During the past week I have noticed my K3 drifting during the first 20
seconds after power up. I hadn’t noticed this previously in my three month
old K3 (SN 1672), so I’m wondering if this is normal? With winter here it
is colder in my basement shack (maybe down 55 F), so perhaps that could
...@notes.udayton.edu
Sent: Tuesday, December 30, 2008 10:16 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3 drift
During the past week I have noticed my K3 drifting during the first 20 seconds
after power up. I hadn’t noticed this previously in my three month old K3 (SN
1672), so I’m
Hi Steve,
I have not noticed anything like this. In fact yesterday I did some
measurements of drift in order to see if the 1 ppm TXCO would be a
worthwhile upgrade. I used spectrogram to measure the drift while tuned
to WWV. From a cold start, until warm up, the Front panel temperature
rose
I have turned on my K3 and immediately initiated PSK31 contacts without
missing a burble. For my practical purposes there is no drift. Then again
here in Florida we are pretty much temperature compensated in the house!
Monty K2DLJ
___
Elecraft
johnamcc...@verizon.net; elecraft@mailman.qth.net
Sent: Tuesday, December 30, 2008 2:08 PM
Subject: Re:Re: [Elecraft] K3 drift
steven.zabarn...@notes.udayton.edu wrote:
During the past week I have noticed my K3 drifting during the first 20
seconds after power up. I hadn’t noticed
steven.zabarn...@notes.udayton.edu wrote:
During the past week I have noticed my K3 drifting during the first 20
seconds after power up. I hadn’t noticed this previously in my three month
old K3 (SN 1672), so I’m wondering if this is normal? With winter here it
is colder in my basement shack
JIM DAVIS-11 wrote:
It seems that in our hobby why in the heck would any individual really
need a TCXO or whatever
in the first place? As most ovens are only switched on when the rig is
instead of being
on CONTINUOUSLY whether the main rig is ON or OFF!!! Ovens really don't
make that
Gary KI4GGX Wrote:
I was considering getting the “KTCXO3-1” for my K3 and appreciate your
observations.
Unfortunately, without knowing on which frequency you were listening to
WWV, it’s difficult to gauge your K3’s temperature stability. Were you
listening on 5, 10, or 15 MHz?
Hi Gary,
Yes,
On Tue, 30 Dec 2008 15:16:41 -0800 (PST)
Julian, G4ILO julian.g4...@gmail.com wrote:
JIM DAVIS-11 wrote:
It seems that in our hobby why in the heck would any individual really
need a TCXO or whatever
in the first place? As most ovens are only switched on when the rig is
instead of being
on
The 1PPM TCXO of the K3 is supposed to support the ability to be
calibrated
over a range of temperatures so it doesn't need the rig to be on all the
time to improve stability. Unfortunately, unless I missed it in one of the
updates, the firmware support for this is still on the list.
Just
Jerry, W4UK, gets a Kewpie doll for noticing that such a DMM would not be
very good, measuring a 1k resistor at just a bit over 1 ohm!
So what's a comma vs a decimal point between Hams?
Ron AC7AC
-Original Message-
We've had several dust-ups here from people convinced their DMM was
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