Searching the net I found this old link
https://www.qsl.net/ve3mcf/elecraft_reflect/K2_TX_Lock_Enquiry.txt
Well the K2 is still licenced in Thailand and obviously Elecraft is probably
still selling the necessary firmware.
73 - Pierre - FK8IH
Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of JCG
Sent: Sunday, March 3, 2024 07:35
To: elecraft@mailman.qth.net
Subject: [Elecraft] K2 - Transmit limits
Sir,
I plan to order and build a CW K2 to use it in Thailand. That country is very
strict about licencing of transceivers
Sir,
I plan to order and build a CW K2 to use it in Thailand. That country is
very strict about licencing of transceivers and require that they cannot
transmit outside of the local Ham Bands limits.
Your manual v1 shows on page 95: "Transmit Limits: Some countries
require transmit to be
On 8/11/2020 5:17 AM, Peter Eijlander (PA0PJE) wrote:
>> and they have a right to be strict.
>
> Sorry Pierre, "they" don't... Not for radio amateurs.
I am a legal professional in the communications regulatory field having
spent many decades on both the governmental side and the
On 10-08-2020 at 22:35 jcj...@lagoon.nc wrote:
and they have a right to be strict.
Sorry Pierre, "they" don't... Not for radio amateurs.
Professional use like land, sea and air maybe yes.
CB certainly.
Amateurs have a license to live up to. Government may restrict
commercial amateur gear
Hi all,
When raising this question I did not plan to transmit outside of the Ham
bands but only to import a K2 in a country where the authorities do not
allow the use of a transceiver which can transmit outside of the Ham
bands. Yes such countries still exist and they have a right to be
Bonjour Pierre,
David put the finger on the right point, because my answer was not complete.
Thank you!
I plan to buy, build and use a K2 and have one question : during the setting of this
transceiver is it possible to strictly put limits to the frequencies which can be used
like for exemple
I don't believe there is any ability to frequency restrict the K2. It's
essentially a bag of components, and most countries allow licensed
amateurs to home construct from components, and applying hard limits in
such cases would be difficult.
On 09/08/2020 08:29, Ingo Meyer, DK3RED wrote:
Bonjour Pierre,
I plan to buy, build and use a K2 and have one question : during the setting of this
transceiver is it possible to strictly put limits to the frequencies which can be used
like for exemple limit strictly the 17m band to 18,068 to 18,168 as in some countries a
transceiver will
I plan to buy, build and use a K2 and have one question : during the
setting of this transceiver is it possible to strictly put limits to the
frequencies which can be used like for exemple limit strictly the 17m
band to 18,068 to 18,168 as in some countries a transceiver will not be
authorized
I plan to buy, build and use a K2 and have one question : during the
setting of this transceiver is it possible to strictly put limits to the
frequencies which can be used like for exemple limit strictly the 17m
band to 18,068 to 18,168 as in some countries a transceiver will not be
authorized
Aaron,
Your K2 was tested with an Elecraft MH2 microphone which needs bias
voltage. That Kenwood microphone is a dynamic type which should not
have the bias voltage applied.
Remove the left side panel and lift the end of the resistor soldered to
pin 1 of the microphone jack.
Since you have
I'm not sure if something is wrong or its my lack of experience. I just got
my K2 put together and sent it to Don to do some repairs and align it. Don
got it working good. I then got a Kenwood MC-43S microphone and hook it up
like Don told me to. I still have not been able to make a single contact
n.qth.net
> Subject: [Elecraft] K2 Transmit
>
> I'm not sure if something is wrong or its my lack of experience. I just got
> my K2 put together and sent it to Don to do some repairs and align it. Don
> got it working good. I then got a Kenwood MC-43S microphone and hook it up
> l
ould meet up with you?
> Where are you calling?
>
> Have a great day,
>
>
> --... ...--
> Dale - WC7S in Wy
>
>
>
>
>> Date: Thu, 7 Jan 2016 17:29:04 -0600
>> From: k5atg.aa...@gmail.com <mailto:k5atg.aa...@gmail.com>
>> To: elecra
Aha, I think I found it. It appears that I have swapped C14 (22uF) with
C50 (2.2uF).
On 6/6/2014 11:09 PM, Michael Eberle wrote:
Okay, I have gone through all the filters and adjusted them using a
noise source and spectrogram. The carrier showing up on PTT in USB or
LSB has disappeared
Good job, Mike. Caps are pretty easy to mix up;
I've done that several times.
Phil W7OX
On 6/7/14, 12:54 AM, Michael Eberle wrote:
Aha, I think I found it. It appears that I have
swapped C14 (22uF) with C50 (2.2uF).
On 6/6/2014 11:09 PM, Michael Eberle wrote:
I still have problems with
Unfortunately, switching the caps to their correct positions did not
solve the problem.
On 6/7/2014 9:22 AM, Phil Wheeler wrote:
Good job, Mike. Caps are pretty easy to mix up; I've done that several
times.
Phil W7OX
On 6/7/14, 12:54 AM, Michael Eberle wrote:
Aha, I think I found it.
What's the source of the 700 Hz tone? Are you sure it is clean?
If you reduce the level of the 700 Hz tone, do the spikes go down at the
same rate as the fundamental, or faster? If the latter, you may be
overdriving the K2.
On 6/7/2014 7:40 AM, Michael Eberle wrote:
Unfortunately, switching
Anything other than a *perfect* sine wave will have harmonics which will
also appear in the output spectrum. Non-linearities within the radio
will also create extraneous products in the output.
With a P3 or other panadapter, take a look at WWV with the radio in AM
and the span around 6 or 7
Okay, I have gone through all the filters and adjusted them using a
noise source and spectrogram. The carrier showing up on PTT in USB or
LSB has disappeared but I think this went away with installing the top
cover.
I still have problems with the audio. I set the dial frequency to
I recently started trying to use my K2 for digital modes and noticed my
transmit audio seems to have some buzz or him in it. I never really
noticed it before on SSB, but if I listen carefully it sounds robotic,
like talking in front of a fan. When monitoring the SSB signal on my
K3/P3, I
On 6/3/2014 4:54 PM, Michael Eberle wrote:
It is adjusted as low as it will go with the carrier balance pot on
the SSB board.
I suspect a simple problem with the audio interface. Study my tutorial
on this.
http://audiosystemsgroup.com/HamInterfacing.pdf
What sounds like inadequate carrier
Mike,
I can't say for certain, but yes, your carrier balance may not be
optimized *and* your SSB OP1 filter settings may not be correct. Either
or both could cause the condition you state.
Carrier Balance - you do not have to connect a mic when doing that - the
mic may pick up ambient noise
I ran a transmit test today on my recently built (serial 7059) K2/100, with SSB
adaptor, KAT 100 antenna tuner and elecraft balun. For the station antenna, I
have an 80 meter dipole with each leg currently cut to 66 feet. The center of
the dipole is not quite 40 feet high. The two ends are
Paul,
Did you set the menu ATU parameter to AUTO and then do a TUNE before
trying to transmit?
If you did, you should have heard relays clack while the KAT100 found a
match, then the SWR indicators should have settled to less than 1.5.
If you followed that procedure, then yes, you can
Paul, you can use an 80 meter dipole on 40 as you describe. Many have done
it with success. However, you may have to fool with it to get it to work,
since the antenna is being fed at a very high impedance point.
I assume the balun you're talking about is 4:1. To start, I'd suggest
grounding the
Tony and all,
Those counterpoise wires should not just be dangled on the ground.
They will carry RF current, and the RF voltage at the ends can be quite
high. Treat them just like an antenna radiating element - keep them
clear of possible contact for humans and pets, and use insulators on
Paul,
In addition to the points in my last post, a check of the feedpoint
impedance (with an antenna analyzer) at the end of the parallel line
would be informative. If you have an 80 meter radiator and a feedline
that is close to a half wavelength on 40 meters (34 feet or some
multiple of
Installing T4 correctly appears to have done the trick. Output power
went up and current draw went down, and seem reasonable.
The xmit mixer buffer output voltages changed after fixing T4, but are
still out of whack:
All measurements Vrms using RF probe, key down)
Xmit mixer
K2 #7150 is assembled. It receives, but shows low power and high
current on transmit. Doing the 40 meter transmitter alignment
procedure, I get these results.
When not transmitting: 13.6V, 0.22A
TUNE, 5.0W selected: 5.0W indicated, 13.3V, 2.00A
TUNE, 10.0W selected: Hi cur warning, 5.8W
Wayne,
The first place to look is the Low Pass Filters and possibly T4.
Make certain the number of turns on the toroids is correct - count the
number of times the wire goes through the center of the core rather than
counting turns on the outside. When winding a toroid, a straight wire
I had trouble aligning on all bands with the KPA. So, I rewound T5 and
found D21 broken and replaced it. Now, the power is erratic. I once had
the 2 watts set on 7100 hz and now it won't go above 0.1 watts. Is there a
way to reset the K2 power output? I've gone clear back to the beginning and
Ron,
Do you have power output on any band? Try them and see.
The display of 0.1 watts is as low as it will indicate. An indicated
'output' of 0.1 or 0.2 usually means no power output at all.
Check the other bands and get back with us for further troubleshooting,
your answer will indicate
At first I had no transmit. I found the problem in T2 where the winding
wire had not made a good connection. Now, I have 17.4 watts power no matter
what I do. The V-Power signal from U8 Pin 2 on the Control Board is 0.00 in
Tune. Changing the Power setting has no effect on the Power readout.
My K2 (05386) has developed a problem affecting the 20 meter and 12
meter bands only. When I key up, the power fluctuates wildly. On the 20
meter band rx seems normal, on 12 there is a chorus of birdies.
My assumption is that a common component was cold-soldered or has
failed.
I note that in the
Hello,
doing the 40m transmitter alignment, i saw that my new K2 (#6454) has
no rf out and Q6 becomes hot. The built in meter goes to 0.1 W. I
checked and rewound T2 and T3 but there is no other result, The
problem exists on all bands.
With the power setting at 2 Watt, power
Michael,
Q6 getting hot is likely caused by excessive DC bias.
Check the voltage on the base and the emitter (compare with the DC
voltage chart) for the transmit condition.
Other components that deserve to be checked are RFC6, R49, C120, C121,
T1, R47, R48, C124, C125, Q10, and R46.
73,
2007 23:30
To: elecraft@mailman.qth.net
Subject: [Elecraft] K2 Transmit audio bubbly
Hello,
Until today I have had no audio problems but this noon while I was in
QSO I was told that my audio was clipping and progressively worsening.
This was confirmed by another ham on freq. I monitored my
Don't forget the magnetic field susceptibility.
Move the rig away from the big ole power supply transformer.
Dan / WG4S / K2 #2456
snip
sounds rather bubbly or bumpy as if I were operating mobile on a washboard
road.
/snip
___
Elecraft mailing list
Ed,
I suggest for your first step that you remove the right side panel from
the K2 and tuck the ribbon cable and speaker wire up into the area near
the top of the control board. If those cables are run over the KSB2
board it can often cause symptoms about like you describe.
Unless you have
Don Wilhelm wrote:
Unless you have an 'RF in the shack' condition that creates mic
feedback, I can't think of anything that would be caused by the addition
of the KAT100 - except for the additional data traffic on the ribbon
cable to the KPA100 needed to talk with the KAT100, and dressing
Greetings Elecrafters. I wired up a hand mike for my K2 today, and the SSB
signal report was that my transmit frequency was about 100 hz low. Any
suggestions on how to address this. I have aligned the rig the best I could
during build. Thanks in advance for any assistance.
73,
Mike
N4JX
Mike,
First of all ... who's 100 Hz? (:-))
The listener's ear? Was his RIT ... or your XIT ... on and
not quite zeroed?
Too many variables to ponder ... and in the end 100 Hz
isn't worth the concern.(:-))
73! Ken Kopp - K0PP
[EMAIL PROTECTED]
- Original Message -
From: Ken Kopp [EMAIL PROTECTED]
To: Mike Geddes [EMAIL PROTECTED]; Elecraft
elecraft@mailman.qth.net
Sent: Sunday, May 20, 2007 6:20 PM
Subject: Re: [Elecraft] K2 Transmit Frequency
Mike,
First of all ... who's 100 Hz? (:-))
The listener's ear? Was his RIT ... or your XIT
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Mike Geddes
Sent: Sunday, May 20, 2007 4:00 PM
To: Elecraft; Ken Kopp
Subject: Re: [Elecraft] K2 Transmit Frequency
Thank Ken. Probably true not much to worry about. I did check XIT and it
was not on . . . not sure
Message-
From: Ken Kopp [EMAIL PROTECTED]
Sent: May 20, 2007 6:20 PM
To: Mike Geddes [EMAIL PROTECTED], Elecraft elecraft@mailman.qth.net
Subject: Re: [Elecraft] K2 Transmit Frequency
Mike,
First of all ... who's 100 Hz? (:-))
The listener's ear? Was his RIT ... or your XIT
My K2 is still transmitting at 10+ watts even though it is set at a
lower level.
When transmitting the K2 says Hi-Cur and then shows a power level of 0.1
even though the wattmeter shows 10+ watts. I have checked pin 10 of the
control board P4 and it shows
0 volts when receiving and 1.2 watts
Kieth,
OK, you seem to have VRFDET in proper order on your K2, so next step is to
check the circuits that are driven by the uP to control the power level.
To briefly explain how the power control works in the K2 - the power
requested is known to the uP, and the actual output power is indicated
While tuning up my K2 filters with spectrogram and tuning the bandpass
filters, I decided to see how the transmitted CW sounded on my K2 Rev B
with keying mod, temperature compensated oscillator mod, and KAT1 tuner,
so I drug out my 75S-3B receiver to listen as I tuned up into my dummy
load.
50 matches
Mail list logo
