I am glad that I started soundcard programs way back before
commercial interfaces were born. It is so simple to make. I bought
two 600-ohm pc board 1:1 audio transformers from RS and one 2n3904,
some resistors and caps. That was to set up my FT-847 on psk-31. I
then used the interface to
H . . . can you route the RCA-connector enable-cable from the K3 thru the
tuner-amp-disable contact connectors thence to the amp?
Btdt with Alpha and Ten Tec. Hth.
Brgds,
Dave, N3HE
--
View this message in context:
Thanks Richard (AD7FZ) for the replacement parts. Elecraft rocks!
73,
David AJ4TF
On Mon, 2011-01-10 at 00:22 -0500, david wrote:
So far so good. The KPA100 passed the first functional test without
issue. The only thing I have run into is that I was missing one small
capacitor, and one
Please add my name to this request. I have the same setup as Phil and
Roger. It would sure be handy if the amp enable line setting could be
custom configured to adapt to this specific environment.
Lu - W4LT
K3 # 3192
Subject: Re: [Elecraft] K3 Amp Key configuration request
Early this SAT morning gettin gready to play in NAQP code I fired up
both K3's, the logging PC and such. I started double checking SO2R
setup in N1MM when all of a sudden radio #1 (K3 sn 594) flashed the
ERR 12v message, and I think it said CHECK CIRCUIT BREAKER etc. I
looked at circuit breaker
Why not set the tune to 1-2W? K3 allows for this as opposed to nearly all
other radios.
The number of software options in K3 is reaching the sky and many problems
of current operators stem from not remembering options that were turned on
by mistake.
Ignacy, NO9E
--
View this message in
DX Eng makes good stuff, Adriano, and I would think this to be a good
vertical active whip. You might want to also check out the active whip from
Clifton Labs. It is also a high quality unit with good overload
characteristics and ability to automatically turn off during Xmit periods.
Available
The DXE NCC1 is also a nice unit that gives the ability to adust the phase
between two rx antennas. I use one with two of the clifton labs active
antennas and also installed two of Jack's new HP filters in the NCC1 (It has
provisions for filters but DXE decided not to build the filters).
73
Greg
Craig
I'm most interested in your system and I wonder if you could describe it
further. What size is your loop and do you use a separate phasing unit
before injecting the result into the K3 rx input?
David
G3UNA
Another possibility you might want to explore is a K9AY loop array, even
if
I divided all the components of rf board bags into parts boxes (really
handfull!), but in this way i discarded the crystal filters bag with the number
necessary for alignment as indicated on page 54 of the manual. What can i do???
On the crystals is written this:
ECSX V
4.9136-S
CHINA K8
Tnx
Ignacy wrote:
Why not set the tune to 1-2W? K3 allows for this as opposed to nearly all
other radios.
The number of software options in K3 is reaching the sky and many problems
of current operators stem from not remembering options that were turned on
by mistake.
Ignacy, NO9E
I think
Hi Ron,
Yes, I would say they are related. From the owner's manual section on
troubleshooting transmit problems:
... low voltage may cause an erroneous temperature reading...
The ERR 12V message also indicates low voltage.
I think you're on the right track checking the circuit breaker lugs,
I use CM500 for few months now. I don't hear difference between Heil proset and
CM500. Microphone is a bit different and TX EQ needed to be adjusted and mic
gain reduced significantly. But the main CM500 advantage, aside from being 3
times cheaper than the Heil, they are much more
Pippo,
Just assume the bag was marked with 3.7. That is the most common, and
is close enough to get you through the process.
After the K2 is complete and the KSB12 is installed (if you are adding
that option), I recommend you refine your filter alignment in any case -
Use Spectrogram and
Hi John. First, make sure that you are using the top port on the
SteppIR controller. Second, you can't use a standard cable. The SteppIR
requires a special cable which you can make yourself. It needs to be
3-wire null modem (crossover), with pins 79 tied together on the
SteppIR side. Here is
I got no help from the DX4WIN reflector on this. Maybe (hopefully) someone
here can help?
I use DX4WIN 8.08 and a K3. I have been experiencing an oddity that I have
not been able to resolve:
With K3 tuned to 3500.0, if I double click on a spot at 3503.5 the K3 goes
to 3503.5. No problem.
Wayne,
I would wager that you have your CW pitch set to 650 Hz, either in the
K3 or in DX4WIN or both.
Then I would guess that DX4WIN is changing the mode first and then
changing the frequency. Done that way, the frequency can be off by the
amount of the sidetone pitch. If the frequency
Fred:
Dumb question, but you wouldnt have one or both of the
following conditions:
1 - Fan speed on FN1 for noise abatement and not on AUTO,
or:
2 - Something like a monitor base or a radio interface
sitting over the grille on the top of the radio's cabinet,
thus blocking or severely
Hi All,
Just completed assembling my K2 kit I had on the shelf for 7 years SN 3089.
After engineering a cap change to get the VCO voltage correct (C72 from 270 to
300pf) it appears to work now.
I went through the tuning OK but wanted to ask if there is a better way to
adjust the BFO so that
Dave,
Go to my website www.w3fpr.com, and look at the article dealing with K2
Dial Calibration - it includes the filter setting, but you may as well
do the whole thing and have good dial calibration as well.
Spectrogram is available for download at Tom Hammond's website
www.n0ss.net, and Tom
In the K3's CONFIG:CW WGHT configuration item, what is your setting for
automatic VFO offset on SSB/CW mode changes (changed by tapping the 5
button)? If this option is set to VFO OFS and the frequency change is
performed before the mode change, the mode change will result in an
offset equal
Wayne,
As I said, I had this problem a few months ago. Here is the solution from
Rich, VE3KI:
What is your setting for CONFIG:VFO OFS (see CONFIG:CW WGHT in the
manual)? If you have CONFIG:VFO OFS turned on, the mode change between SSB
and CW will cause the dial frequency to jump by the CW
...all of a sudden radio #1 (K3 sn 594) flashed the ERR 12v message, and
CHECK CIRCUIT BREAKER etc... circuit breaker was not tripped...
I've had multiple occasions of a similar situation.
N1MM via MicroHam to K3to Acom amp.
During the last few CW contests, occasionally in the middle of a
On Tue, Jan 11, 2011 at 2:56 PM, Ralph Parker ve...@dccnet.com wrote:
...In normal (non-contest) operation, I have had no problemsI'm now
waiting for the next contest to see what happens...
At the moment, Murphy is vacationing in the Spratly Islands. He will be back
to visit your shack
After properly performing the TX Gain calibrations, I don't
see any significant difference between tones (K3 s/n 477):
Mark Space Difference
at 100W100.50 100.40 -0.004 dB
80W 80.70 79.50 -0.06 dB
60W 60.90 60.00
The effect of the skew (difference in amplitude of the mark and space
tones) is to cause an undesired amplitude modulation in addition to the
desired frequency modulation of the FSK. If the skew is due to a
constant slope in the frequency response, then the shape of the
modulation is the same for
On 11 Jan 2011 at 15:03, Tony Estep wrote:
At the moment, Murphy is vacationing in the Spratly Islands. He will be
back to visit your shack right after the flag drops for the next
contest.
And that might be sooner than you think. Posted today from the DX0DX
team, still marooned in DU land:
Thanks to all the responders. Unhappily I haven't yet found the problem:
Here's what's been suggested:
I would wager that you have your CW pitch set to 650 Hz, either in the K3
or in DX4WIN or both. I believe it is set to 650, but I can't find
anything that would cause the spot offset.
Try
after the 62nd recommendation for this headset I have finally ordered one.
http://www.samash.com/p/Yamaha_CM500-Headphones-with-Microphone_-49969751
Mark n2qt
__
Elecraft mailing list
Home:
Thanks for the info Mark, good price and no shipping cost!
I also have succumbed to the many recommendations and realized that
I was hopelessly induced to buy the headphones. :)
Bob
K6UJ
On Jan 11, 2011, at 2:44 PM, Mark n2qt wrote:
after the 62nd recommendation for this headset I
On 1/10/2011 5:42 AM, py5eg wrote:
Has someone tested for yaesu rigs? What are the results?
Yes. A few months ago, I made a simple adapter to connect a CM500 to an
FT1000MP for use at PJ4A. I checked it out with the MP that's still on
my shelf (and for sale), and got critical on the air
On 1/7/2011 7:04 PM, Tony Estep wrote:
If you have a wire antenna, disconnect it, put 50 ohms across the coax and
hook it to your scope. If you are like me, you will see a hideous waveform
of mixed harmonics of 60 hz,
If you see a lot of 60Hz and its harmonics on a scope as you have
described
On 1/6/2011 2:55 PM, George Jan wrote:
It is not critical at all - should be at least 10 times the microphone
impedance.
Actually, the current applicable IEC Standard DEFINES the impedance of a
microphone as 5X its rated load impedance. And yes, a higher input Z is
better -- the rated
Guy,
Look at Fair-Rite 2643167851 This MIGHT allow several turns of some
smaller window line, maybe enough to be useful at HF. Remember that you
need a complete magnetic circuit, so this makes it unlikely that ferrite
parts designed for ribbon cable will fit your need.
I assume you're
Coincidently I ordered my second pair this morning at that same site,they
charged me $47 shiped to Florida.They said also they have a strore in Tampa
here so I should have them in two days.
AD4C
If freedom means something,it is the right to tell others what they don't want
to hear –George
no shipping cost
Not exactly truth,they told me there is no free shiping for the state of FL
although it was just few bucks.
AD4C
If freedom means something,it is the right to tell others what they don't want
to hear –George Orwell
--- On Tue, 1/11/11, Robert Harmon k...@pacbell.net
Problem solved - thanks to Dave, N4QS.
Under CONFIG CW WGHT - tapping 5 toggles between VFO offset on SSB/CW mode
change (VFO OFS) or
no offset (VFO NOR, default). After Dave pointed this out I went to the pdf
version of the manual and sure enough - it included this option. I guess I
need to
Wayne,
I would not trash that hard copy manual - it contains information about
the connections to the K3 and the various buttons and knobs that are
still valid.
The biggest changes are in the menu system, so I would advise to
download the latest .pdf version of the manual and print the
For no particular reason (that I know of) my K3 serial #849 suddenly has no ptt
function. I have gone into the menu and cannot re-engage the PTT. I get an
error message of err tfx. The rig will tune in cw, but no PTT. What am I
doing
wrong? I'm sure it is painfully obvious.
K0GFY R.
My financial circumstance requires that I reluctantly need to sell my K3 and
related equipment. My K3 (100W) includes the KAT3 (auto tuner) and the KXV3
(Transverter interface). I also have the W2-A Wattmeter (SWR Bridge) with the
1.8-54 MHz 200 Watt coupler -- all factory assembled.
Hunter,
The ERR TXF is significant. If you check the manual, you will find that
message is telling you that you do not have the correct transmit filter
selected.
The easy way is to use K3Utility. The Transmit filter for CW, Data
modes and SSB must be the 2.7 (2.8) kHz filter.
73,
Don
I decided that rather than depend on a hand-waving argument I would go
ahead and do a Mathcad simulation to calculate the effect of 1 dB of
tone skew (unequal mark and space tone amplitudes) on the transmitted
FSK spectrum. Basically, I found that it made no significant
difference.
A PDF of the
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