I am going to send this out to both reflectors, Elecraft and MicroHam because I
am not sure where I have set up the system incorrectly. The system does work
intermittently and I have had successful QSOs with it on both CW and digital
modes.
Setup; K3, MicroHam USB 3, Y cable to ACC to USB 3
Did you find your problem? Any fault codes?
I suggest contacting supp...@elecraft.com, but if were me, I'd check all
internal connections first and do a quick visual. I suspect a problem
with the elaborate TR switching circuit or something that controls it.
I see a couple 51 ohm resistors on
Just worked VK9CS, Cocos Keeling Island, JA1PBV, operator on 17 meters, with
K3, P3, and KPA500. Have the 2nd receiver in the K3 and using the sub to find
the worked station in combo with seeing it on the P3, is wonderful for working
the pileups or just working the DX split. Tnx to Elecraft for
Keith,
I cna perhaps help with your inability to get 4 bars on the ALC meter
with the 5th bar flickering - not that the 5th bar indicates the onset
of ALC, those bars below the 5th are an aid to setting the proper audio
level.
I suspect you are connected to the K3 Line In jack. That means it
Issue: I have intermittent performance with the USB 3 and my k3. At
times when using the device with FLDigi software the transceiver ends
up locking up on transmit and I usually have to exit out of FLDigi to
stop the transmit cycle as none of the buttons will work. This has
happened in
On 9/21/2012 6:40 PM, Wayne Burdick wrote:
The 6 kHz filter band-limits the transmit noise originating from the
DAC and the transmit mixer to a bandwidth appropriate for AM and ESSB
modes. The 15 kHz filter would allow a noise bandwidth over twice as
wide.
In an attempt to quantify this
Hello all:
I know this is old news to most of you, but
I just completed my K2 last night. By completed
My K 2 has all the options an last night I added
the KAT 100 tuner and that made a big difference
in operating with the radio at 100 watts.
I run Logic 8 logging program an it works great
Does anyone have experience with the subject combination? I just tried
using a newly-purchased version of my trusty old Keyspan USA-19HS and it
crashes Windows 7 (blue screen) when I try to TX with F1. Worked fine with
XP. I'll order KUSB if I get OK reports here. TIA!
73, Barry, K6RM
I had the damnest time getting my K2 and usb converter to work. Check all
params baud rates, com port #'s and nothing. Blue screen of death is
usually caused by a wrong chip set. Update drivers make sure you are using
FTDI chip set. This is my advise, but more info needed such as rig, brand
Thanks, Gerald. Apparently the Keyspan uses a TI chipset and I did try
their latest drivers. BTW, I have a K3 (connected via P3) on the serial
cable.
Barry K6RM
On Sat, Sep 22, 2012 at 10:47 AM, Gerald Manthey kc6...@gmail.com wrote:
I had the damnest time getting my K2 and usb converter to
If anyone needs a really good 300 gigabyte Ultra 320 wide SCSI hard drive, I
have one that was intended as a spare in a 1.5 terrabyte Raid 5 array. It is
in the hot swappable carrier for an HP Proliant DL-385 server and has been
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These sold new for
On a new to me K3, I am having problems with power output below 15M. For
example
the power output on 80 maxed out at 30 watts. (good swr etc., no alarms,
voltage input
is good etc.).
So figured it was a TX gain issue so set up recalibrate it. The 5 W
calibration goes fine
on 160, but fails
you should check this out http://www.consumernews7om.net/work/?alert=15993
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There are many old computers that have operating systems that are not supported
with Windows, Mac, or
Lenux Utility software but have communications programs that can talk to the K3
KX3. A command (let's call it TK for terminal to K3/KX3) that in CW Data
modes opens up the loading of the
On 9/21/2012 5:01 PM, Phillip Shepard wrote:
I tried tightening up the cables at both ends (BTW, I am using the control
cable between the rig and amp for maximum integration, and the K3 knows to
reduce the power out when the amp is in operate).
That is not totally true, for me at least. I
one more bit of info.
If I use the tuner into 50 ohms it finds a match but when I
manually transmit the swr through the tuner is high,
for example 4.4:1 on 40. Bypassing the tuner gives the
1:1 expected with the dummy load, although at 30 some
watts.
I really think there is a floating cable
Greetings,
My K3 just returned from the Elecraft after being serviced. I have not been
able to get it to send audio. I believe the rig is transmitting as I tune
the antenna and the transmitter keys up during the tune cycle from the auto
antenna tuner.
When I key the mic - there is no
Hi Keith.
Have you tried without the Y-cable?
Have you tried with lower output?
I think that either the Y-cable is messig up things, or that you have an RFI
problem.
There are no definitive answer of what the positions on the volum knobs on the
front shall be as they have to be adjusted
Martin,
I had it working on my other K3 real well with DM780 except for CW and then
when I wanted to get CW working it seemed to mess with digital modes. The Y
connector is from the recommended vendor. And I have NR had significant rfi
issues in a long while but I will check it out. I
thanks for the suggestion John. I tried it but it didn't allow calibration
to occur.
However I noticed that after the ATU tuned the 50 ohm load the rig showed
high SWR (4.1:1 or so) when I manually keyed it. Also on the bands the
power output it good, the Current drawn is shown as 2.3 Amps,
Thankyou Joe, Excellent examination of the situation.
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe Subich, W4TV
Sent: Sunday, 23 September 2012 12:23 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] New beta K3
It's not in TX test mode is it?
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike Paulin
Sent: Sunday, 23 September 2012 5:34 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] No output on my K3 - audio
Greetings,
My
Hi Joe,
Thanks for that analysis! It makes the situation clear to me: The FM filter
will do just fine for AM and ESSB, and I can free up a filter slot for a
narrow CW filter.
Wayne, it would be great to have this option. I hardly ever use ESSB or AM
TX, so I can't really justify having a filter
*Joe,
Thanks for taking the time to conduct the tests.
Now that I understand what the rationale for the request to Wayne, I am of
the same mind also.
As I use the FM filter rarely I would also be able to free up a filter slot
and add an additional narrow filter which would be good for me also.
Gary,
Joe did testing on a sample size of one K3. While manufacturing of K3s
can produce units that behave close to the average, I think it would be
wise to test on a greater number of K3s with different configurations.
In addition some testing of K3s under fault conditions should be done
The weekly Elecraft SSB net will meet tomorrow (9/23/12) at 1800Z on 14.3035
MHz +/- QRM. I will be the net control from western Oregon. Since my new
KPA500 has failed, and the SB200 has been relieved of duty; I will be at
100W. So, a strong west coast station to back me up will be helpful. See
Mark,
There is one possibility of a loose connection in the ground path for
the antenna connectors.
At the upper right-rear corner of the K3 there is a 2D connector, a long
screw and a standoff is fastened to the threads of that long screw.
The tightness of that standoff is important to the
It might also be interesting to see what happens to the noise pedestal
when audio is added to the equation.
73,
Scott, N9AA
On 9/22/12 6:31 PM, Don Wilhelm wrote:
Gary,
Joe did testing on a sample size of one K3. While manufacturing of K3s
can produce units that behave close to the
Scott et al, I changed the subject as it is being used for many things ot;
ref subject.
Just to elaborate if I set the XTAL config such that 2.1k xtal does not
engage until dsp 2.0k and listen at 2.1k as usual,
Then compare to setting the XTAL config such that 2.1k xtal does not engage
until dsp
On 9/22/2012 3:05 PM, Bill K9YEQ wrote:
Fred,
More than likely you are changing freqs and the amplifier/K3 are folding
back power based on detected antenna complex loading issues. Until the
KAT500 becomes available, you don't need 100 watts on any band to get 500W
out! Back off your per
Fred,
There is a known firmware issue which causes the K3 to sometimes forget
to go back to 100W when switching the KPA500 from OPER to STBY.
Mine has the same issue where I need to periodically reset the K3 PWR back
up to 100W when operating the KPA500 in STBY. So far the K3 remembers to
First, the bug (FW 1.12). I use scan a lot - it has worked very well on my K2
and on the KX3 as well. But on the KX3, if I switch to a new band, hit RCL
and have the condition that the RCL memory happens to be on the setting I
want, then I hit RCL again - the scan function is not aware that I made
I experience a similar thing. With KPA500 BAND CHG set to STBY and
using the KPA500 band buttons to change bands, it happens if the
KPA500 goes from OPER to STBY on band change. Elecraft support
confirmed the issue and said that it would be fixed in the next K3
firmware release.
Bob NW8L
Fred,
It would be very difficult to measure the out of band noise in the
presence of a 100W PEP multi-tone audio signal. Much of the opposite
sideband noise would be masked by amplifier IMD which measures -29 dB
(3rd order) to -51 dB (9th order) relative to PEP in the ARRL lab (QST,
January, 2009).
Joe,
That information on the sample of two is good, but since there is
variation between them, that is reason for me to suggest additional
testing - it takes 3 to vote on the correct answer and several more to
determine an average.
Joe, that was very good work, and the test setup is not
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