Iain
Well done, I might just get one of those and I see they are £75 from Amazon
best 73
David
G3UNA
- Original Message -
From: Iain Kelly i...@m0pcb.co.uk
To: elecraft@mailman.qth.net
Sent: Tuesday, January 08, 2013 9:44 PM
Subject: Re: [Elecraft] K3 Remote VFO tuning control
Cliff,
That is not a problem - that is the SCK line that you inquired about before.
73,
Don W3FPR
On 1/9/2013 1:21 AM, Clifford Hynds wrote:
Troubleshooting my K2 U4 on RF board Pin 7 shows 4.8V DC manual says 0 ?
other pins correct .
Any one confirm this please,
thank you
Cliff VK2CCJ
Cliff,
There are two areas of the K2 transmit chain that have frequency
dependent components. The Transmit Buffer and the feedback loops from
collector to base of Q5 and Q6.
Check the soldering for the components connected to RF Board U9,
especially R94 and C150 on the bottom of the board.
Check the continuity from the connector to the paddle tip to the dit
contact on the paddle ring to the dash contact and the sleeve to
ground. in your case I am suspicious that ground may not be made.
On 1/8/2013 10:55 PM, Mark Kopec wrote:
I have been unable to get my new BY-4 paddle
I strongly suspect you have a common mode problem. These can be very
frequency dependent.
Read: http://audiosystemsgroup.com/RFI-Ham.pdf especially the section on
common mode chokes. There is a cookbook near the end for band specific
chokes.
For more details on the math read:
This has happened enough to raise it as an issue.
I have a SDR on the subrx IF. I operate mostly CW. The SDR is set so
that frequencies agree at zero beat on CW. A/B VFO's are linked for
normal everyday operation. I use ROCKY for everyday use and SKIMMER for
contests.
If I change mode
Can anyone who has done the 160/80 meter LP filter mod tell me if there are
parts now on the pads on the circuit board? If there are, did you just
break them off (then clean up the pads) or heat them and remove them?
--
John Fritze Jr
K2QY
AARA president 2013
ACACES secretary 2013
Albany County
Sounds like the 4:1 balun may be overheating on 12M. Chances are if
you've been doing this for a bit, it's ruined. Heat anneals the core
and changes it's electrical properties for the worse. Heat may have
cracked it.
Now whether a 4:1 balun is the thing to use is another issue.
You don't
I posted a question concerning an issue with broadcast band interference on
my KX3 and received several good replys. Here's more info on this
issue.there is a local AM broadcast station about 8 miles away but that
is not the one I'm hearing. It's sounding like a Shortwave AM broadcast
from
I've been following this thread but have not responded since my impression
of the original request was for a self-contained tuning knob that did not
require use of external software and an associated computer. I agree with
Ian's proposal that, although it is not a standalone solution, the Shuttle
I am wondering if anyone has used the k3 in any rtty contests and what
their menu settings are for the radio, thoughts comments, expectations
etc as opposed to all the greatness I hear on the y 5k reflector.
I know the K3 is a great radio but I don't seem to read too many
operator comments on
Somewhere in the back of my head is a recollection of issues surrounding
spurious signals caused by the mixing of strong signals in things like corroded
gutter joints etc. If there is a strong signal present from the AM station at
all times then the other signal varying in strength might cause
Gary,
Direct detection of AM signals is inherent problem with zero IF SDR. The
best solution is the use of RX SHIFT.
You can possibly use high Q filter at the input of the radio if you know the
frequency of the interfering AM station and if it is only one such a
station. But it is hardly
While the rusty bolt syndrome is real, what is being discussed here is likely
what is called am broadcast bleed through. This is a consequence of a direct
conversion receiver and as I understand it is second order issue in the
receivers front end, which basically makes it act as a detector to
Being mainly confined to evening operation when the higher bands are closed
to me at this time of year, I decided to try out PSK31 on 40 and 80m. My
mentor (George G3ICO) is a very experienced CW operator who always gets much
better DX with his QRP (5W) KX3 than anything I can do with SSB and 100
Ray,
Why do you want an external interface? You can use the soundcard in your
computer or spend the money on a nice external soundcard. The line in is
already isolated.
See you in the waterfall.
73 de Eric, KG6MZS
On Jan 9, 2013, at 9:19 AM, Ray Coles wrote:
Being mainly confined to
The K3 and filters are no longer available, as I've decided to hang onto
them. Thanks to everyone who inquired about the rig and filters!
73,
Scott, N9AA
On 1/8/13 11:19 AM, Scott Manthe wrote:
For sale: Excellent K3/100 SN 3019, with auto tuner, 13k, 6k, 2.8k,
500hz, 200hz filters. KXV3,
If that balun had overheated and become ruined on 12m it almost
certainly would have affected other bands as well. A ruined balun is a
changed balun.
Dave AB7E
On 1/9/2013 7:26 AM, Brian Alsop wrote:
Sounds like the 4:1 balun may be overheating on 12M. Chances are if
you've been
Dear Jim:
Something is screwy. I run the same sound card, but usually run around level
10 on the k3 to put the input in the middle of the Tascam input level knob
range.
Make sure you are using the right input jack on the Tascam, and the line out on
the k3.
When I used an internal sound
Bill, I use RTTY often in contests and find it incredibly easy to use. I built
a very simple interface and use FSK rather than AFSK. that does not require any
adjustments etc. I do some of the AFSK modes as well but one mans settings will
not be the same as another depending on software volume
Dave,
Most likely a tuner is being used.
If the balun failed one might not notice that since one generally tunes
to min SWR. Unless one recognizes something changed, one wouldn't know
it failed. This is especially true for auto tuners.
This not knowing it failed is wide spread for bead
I used mine in this weekend's ARRL Round-Up in conjunction with N1MM (using the
FLDIGI modem) and a sound card. The system, of which the K3 is more or less the
RF front end, worked great. It's nice to be able to pick out an S3 multiplier
station next (next-next) to an S9 +30 honker with no AGC
In a message on 17 August 2009, Wayne Burdick wrote
..
- We could display just about anything on the P3's LCD
..
- I'd love to demodulate SSTV with the P3, and it's on the wish-list.
..
I would be interested to know whether there is any progress on this. How
far down the wish-list is
Not a K3 user, yet! but I use a IC-718 with N1MM and a Signalink USB in
AFSK but of course I have to use LSB, if I don't and use the RTTY setting
on the radio my ALC is through the roof. I would like to go FSK but I need
to build a different interface. I have been looking at this product which
Jim,
A shot in the dark here but, is it possible you have line out set to Phones ?
Note: Normally, LIN OUT sets a fixed-level receive-only output for main/sub
(L/R), compatible with digital modes. Tappingswitches LIN OUT to =PHONES,
where the line outputs match headphone audio, audio level
Used my K3/P3/KPA500/KAT500 combo this past weekend in the RTTY Roundup. I
use a Numark USB soundcard from Amazon for about $30 and it worked great.
This is one of the soundcards recommended by Jim Brown, K9YC.
Setup is easy just follow the instructions in the K3 manual for AFSK. The
only thing I
From a troubleshooting point of view jumping right to the balun
requires making a lot of assumptions, most of them unwarranted given
what little we know so far from his post. More importantly, a balun
with a ruined core is going to look bad for SWR no matter what power
level is fed to it,
Because ultimately it is simpler and keeps extraneous noises off of the air
such as system sounds. It also means that you can set/forget audio settings
once properly set. If you choose to use a soundcard, a cheap USB soundcard
is just fine.
Of course, PSK is inherent in the K3 abilities so a
I agree that the balun should be checked but that it is likely NOT the issue
here as it works on the other bands. If it is replaced, using a 1:1 common
mode choke (not just a voltage balun or series of ferrite cores on the coax)
would be a good thing to try. I opted for the 10KW rated version as
Hi Group,
Looking for a K3 in any configuration, even in kit form and preferably
purchased in the last year. I wanted to see if there was anything out there
before buying new. Please contact me off the reflector.
Thanks!
Chad
N0YK
Sent from my iPad
I have a K3 for sale.
Serial is 2765 with the following options:
Filters:
- 6.0 AM, 2.8 SSB, 400HZ CW in the
main receiver
KBPF3 - General coverage RX on the main rcvr
KDVR3 - Digital Voice Recorder
KTCXO3 - TCXO
KAT3 - Antenna Tuner
KPA3 - 100 Watt PA Module
Hmm that's news to me ;)
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike Flowers
Sent: Monday, December 24, 2012 3:38 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 and HRD
I've logged a few bugs in HRD's
If it is RFI problem (as it was initially suspected) I would first
disconnect the control cable between K3 and KPA500. I would use only
separate PTT line to the amd and see if the problem is gone on the affected
band.
73, Igor UA9CDC
- Original Message -
From: Rick Bates
John,
The 160/80 meter mod that improves IMD dynamic range requires replacing
a total of four parts in the T/R switching and one of the BP filters.
The mod would not be overly difficult for someone proficient with SMD
rework but I wouldn't recommend it for someone who isn't. To answer
your
Ok guys.. this is K3/KX3 week
What do you all think is missing in HRD that the K3 command set supports?
Not bugs, but things that aren't implemented.
And it HAS to be in the cat controls to be implemented..
Rick - W4PC
-Original Message-
From: elecraft-boun...@mailman.qth.net
There was some chatter about this issue earlier in the year but did not see any
clear resolution. Like what others were seeing, the utility program
successfully completes 5 and 50 watt calibrations but settles on 0.1mw when
performing the 1 milliwatt cal; i.e., fails to achieve 1.0mw.
With
Gary,
As an alternative to using RX SHFT, you could try reducing gain in the
RF section if you have the preamp on. Try preamp at the 10dB setting or
preamp off.
73,
Rich AC7MA
On 01/09/2013 07:15 AM, Gary Auchard wrote:
I posted a question concerning an issue with broadcast band
There was a change in K3 firmware around version 4.43 where we had to use a
different PC command to ask for 1 milliwatt out. The current K3 Utility uses
different PC commands to request 1 milliwatt depending on MCU revisions.
If you're using an older K3 Utility you might see 0.1 milliwatt
Its not anywhere near the top and its unlikely we will do this. We are
swamped on other areas.
Eric
---
www.elecraft.com
On 1/9/2013 10:12 AM, David G4DMP wrote:
In a message on 17 August 2009, Wayne Burdick wrote
..
- We could display just about anything on the P3's LCD
..
- I'd
I did the mod and yes currently there are SMD parts at the locations of the
four devices you need to replace. I had no trouble heating the existing
devices to remove them. I also had no problem soldering the new devices in
place. It was normal two pad SMD stuff, nothing special.
For reference I
First, a thank you to everyone who has taken an interest and provided
information on my problem.
In an attempt to quantify the problem, I sent Jack W6FB a copy of the fault
dump on the KPA500. I sent Dick K6KR, the trace he requested from the KAT500. I
also sent him the information he
Hello,
This has probably already been suggested, but I would like:
- A four-digit code to turn on the radio, to prevent unauthorized access.
- An automatic power reduction for data modes, like TUN PWR.
Gil.
--
PGP Key: http://keskydee.com/gil.asc
Regarding direct frequency entry, it would be nice to be able to enter
directly the 100Hz digits; for example in entering a 60M dial
frequency this is frequently needed. Could this please be added to the
enhancements to be done later list?
Many thanks de Dave, W5SV
Yep. Ran in the RTTY RoundUp this last weekend. My setup is maximally
minimalist ... two RS stereo cables between LINE IN/OUT on the K3 and
LINE OUT/IN on the laptop running N1MM+MMTTY. I have the K3 in AFSK,
PITCH=915Hz [I can't hear anything above about 1200 anyway]. Set 915Hz
in MMTTY.
excellent answer.
On Jan 9, 2013, at 1:58 PM, Eric Swartz - WA6HHQ, Elecraft
e...@elecraft.com wrote:
Its not anywhere near the top and its unlikely we will do this. We are
swamped on other areas.
Eric
---
www.elecraft.com
On 1/9/2013 10:12 AM, David G4DMP wrote:
In a message on 17
More info:
I have the ATU installed in the KX3. Even with the KX3 directly connected
to a good 50 ohm load, running an autotune on the XV bands (28 MHz) causes
lots of relay chatter in the radio, and a displayed SWR of 25.4 that does
not change. On the other bands (including 28 MHz) it
A suggestion that I would like to see implemented:
An option in the CW Key menu of None, so one could use a 3.5mm mono plug,
ignoring the short to ground across what would be the ring in a stereo
plug.
73 - Jim K8MR
In a message dated 1/9/2013 5:53:39 P.M. Eastern Standard
Hello everyone,
I've released a new app to the Mac App Store named KX3UI.
The App Store listing is available here:
https://itunes.apple.com/us/app/kx3ui/id590043143?mt=12
I have 40 promo codes available for anyone who wants to download it for
free. I welcome any feedback you may have. Please
Hi Dick,
That did it, thanks. My utility program was not THAT old, but old enough - hi.
73,
John K1JD
Santa Fe, NM
On Jan 9, 2013, at 2:56 PM, Dick Dievendorff die...@comcast.net wrote:
There was a change in K3 firmware around version 4.43 where we had to use a
different PC command to ask for
Hi Rick,
The TUNE button properly sets the KAT3 tuner tuning operation. I had to
make a new CAT command to change it to an actual TUNE (send a carrier) to
tickle the KAT500 into knowing what band portion I was on or for retuning.
Um, SWH16? I'd have to look again.
Unless I've totally missed
One thing I miss in my Elecraft Transceivers from my IC-7000 days.
I miss the end of band notification. Especially in the KX3 when operating it
portable or mobile.
Not as critical in the K3 but would be a nice feature in both K3 and KX3 for
sight impaired or sightless hams or old guys like me
I resumed troubleshooting by going back to the basics. First, I cut off the
connectors on one end of the Bencher factory cable. Instead of using the
Bencher keyer, I then connected the red and white wires to a post on my
Vibroplex Original keyer, and the black wire to another post on this keyer.
Where is the related information listed on the Elecraft web site?
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of John Fritze
Sent: Wednesday, January 09, 2013 06:12
To: elecraft@mailman.qth.net
Subject: [Elecraft] [KX3]
Hello, all -
I installed the KXBC3 and charged up the batteries. It's all working well.
My understanding from reading the manual is that the KXBC3 does not
automatically charge the batteries.
For example, if you use the KX3 on battery power for a few hours and then plug
it into the power
Correct. You can set the time on the charge too, using the VFO A
dial. Charge rate runs about 200 mA, so in general a 12 hour charge
works for fully discharged batteries. It's one of those YMMV things.
matt W6NIA
On Thu, 10 Jan 2013 00:17:06 -0600, you wrote:
Hello, all -
I installed the
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