Eric Swartz - WA6HHQ, Elecraft wrote:
Its now up on our manual download page in the K3 section. See:
http://www.elecraft.com/K2_Manual_Download_Page.htm#K3
73, Eric WA6HHQ
Many thanks Eric and a great job as always on the manual. Many thanks
to all involved.
73 Ian
--
Ian J Maude, G0VGS
Don Wilhelm-4 wrote:
I have been following this discussion with casual interest, and I
observe that we have come full circle once again with receiver front
ends.
[snip]
I wonder what is next - It seems to me that we reach a practical limit
for front end sensitivity when a
Hi Bill
Here's my two penn'orth:
Operating in dxpeditions I usually use around 28 to 32wpm, down to 20wpm
depending on conditions, eg 160m. In ideal conditions I would get up to
around 190 contacts per hour and my friend SWH would get around 260 at
similar speeds. The bottom line is that 3
In a recent message, Julian, G4ILO [EMAIL PROTECTED] wrote ...
I don't really care what goes on inside the box but I want my radio in a box
marked radio with its own independent controls, that works separately from
any computer.
I do concur with that, Julian, which is why I have not gone for
Bill W4ZV wrote:
That's ~2.5 per minute or roughly one complete QSO every 24 seconds over
the entire 48 hour period. Perhaps now you see their obsession with
saving time by minimizing the exchange and sending it at high speeds!
Yeah, and 4L0A's obsession with saving time also involves
Steven.Zabarnick wrote:
Oops, mistakenly sent this with the wrong subject line.
Jack's measurements of the K3 AGC on the link listed below are quite
interesting. As my noise level on the low bands is usually at least S3 or
4, his plots indicate that the noise (S3 is approx -90 dBm) is
Hello Julian,
Technology is wonderful, but I still have an extreme reluctance to adopt any
kind of SDR that is based on general purpose computers...
The one of the interesting things about using personal computers for SDR
is imho that generally more people can take part in their development
I would argue for the piggyback approach. Use a pair of sprung tweezers
that can grasp the SMT resistor at a comfortable angle. (I use a 1/8 inch
chisel tip iron for almost all my work - gets in and out very quickly compared
to a smaller tip.) There is plenty of space around the two
Hi Gary et al,
As you might remember I did have some problems connecting my K3 to a new PC
(HP) using Windows Vista 64-bit. The problem was connecdted to 64-bit which
still is fairly unusual.
Some good input from Gary, Elecraft and Simon (HB9DRV) turned my eyes away
from USB interfaces.
I just
Hi,
I guess you did *not* install any drivers yourself, rather the default
Windows drivers were used when you switched the PC on?
I don't think exsys sell outside Europe - I have their PCI and USB devices
and have never had a problem.
Simon Brown, HB9DRV
www.ham-radio-deluxe.com
-
For some unknown reason my K3 (897) tripped out 3 times last night when on
160m cw.
I was running 90w out with a 1 to 1 swr - auto ATU installed.
Each time I brought it back to life by hitting the POWER button.
It is a little disconcerting when in mid QSO!
Has anyone else had this happen to
I would argue for the piggyback approach. Use a pair of sprung tweezers
that can grasp the SMT resistor at a comfortable angle.
At first, I detested working with SMT parts. I slowly got over it and have
developed a certain comfort level but I almost need to meditate first as the
iron is
G4AFU Paul wrote:
For some unknown reason my K3 (897) tripped out 3 times last night when on
160m cw.
I was running 90w out with a 1 to 1 swr - auto ATU installed.
Each time I brought it back to life by hitting the POWER button.
It is a little disconcerting when in mid QSO!
Has anyone else
I have had this happen to me, mkae sure the power connector plugged in fully.
The type that is used by Elecraft tends to not stay plugged in completely,
as the wire is pretty stiff it tends to pull out sometimes.
Craig K6ML
G4AFU Paul wrote:
For some unknown reason my K3 (897) tripped out
Good afternoon,
After replacement pair of these resistors there are any changes in work
of a linear output?
Any results of changes in a graphic kind are welcomed. Thanks!
73! Alex UR5LAM
K3/100F #0568
___
Elecraft mailing list
Post to:
Yep, same here.
I agree, I think it's the power cable.
73,
Tony W7GO
Craig KA0CT wrote:
I have had this happen to me, mkae sure the power connector plugged in fully.
The type that is used by Elecraft tends to not stay plugged in completely,
as the wire is pretty stiff it tends to pull out
While a bad connection in the power certainly can cause this, it's worth
checking your power supply crowbar point. As you know, most power supplies
have over-current protection (crowbar circuit) that shuts them down if the
current exceeds some preset level, even instantaneously.
Some supplies,
From N8GU... I have the 1.8 roofing filter. It is okay during a contest.
Tighter than that makes understanding the voice on the other end extremely
difficult. For a general SSB QSO I usually tighten the DSP filter to 2.1 to
2.2 and that sounds excellent.
JD wrote:
Hello,
Has anyone
Re-send of yesterday's AM email ending this thread..
Please, lets end the CW speed thread now.
73, Eric WA6HHQ
Elecraft List Moderator (really!)
--
Eric Swartz - WA6HHQ, Elecraft wrote:
Lots of good info in this thread regarding CW speed, but its time to
put it to rest for now. We're
Lennar,
Vista and USB have nothing to do with each other. I did all my K3 firmware
updates through a Microham Digi Keyer.
The problem with USB2SER hardware and software ports is that more
applications have 'seen' the COM PORT and lock or poll them even if these
applications are not running
Excellent points made by Ron, AC7AC. Probably would not be a bad idea to check
DC input volts and amps with B knob in the meter mode for a given power on each
band to see what demands are being placed on the power supply.
Voltage drop due to resistance of power plug connector/s might also be
Toby Deinhardt wrote:
I've got a hankering to unite a panadapter with
information from the WinTest band map, DX-cluster spots and maybe a few
other goodies. No idea when and if I'll actually do this, but with this
kind of an open system I (much more easily) can if I want.
This is
These are all excellent observations, IMX. I use a magnifying headset for a
good many things. Excellent lighting is important too. My bench is equipped
with two 100 watt 5800K compact fluorescent lamps (CFLs) on swing arms. The
5800K color temperature is close to sunlight where we humans have the
That's a sign the contacts are not fully inserted in the connector housing.
I ran a little test on my APP connectors, and it requires just about a
kilogram (2 lbs) to separate them. That's enough to drag the K3 around the
table top!
Ron AC7AC
-Original Message-
I have had this happen
P.B. Christensen wrote:
Somewhere on the web, an ingenious fellow developed a slick third hand
for SMT work The device is clamped to the edge of the PCB and pivots much
the same way that we used to adjust a crystal radio's detector by varying
the catwhisker arm position and tension on a
-Original Message-
From: [EMAIL PROTECTED] [mailto:elecraft-
[EMAIL PROTECTED] On Behalf Of G4AFU Paul
Sent: Thursday, December 04, 2008 5:30 AM
To: elecraft@mailman.qth.net
Subject: [K3] [Elecraft] K3 power tripping out
For some unknown reason my K3 (897) tripped out 3 times
Hi Larry,
I have lots of experience with video editing suites, both traditional, and
high end workstation based systems. They each have their advantages, and I
haven't noticed any speed advantage for either when it comes to
post-production. When it comes to live production, however, buttons and
Floated off? Did you heat both ends at the same time?
I haven't checked the parts on that particular board, but many such parts
are attached to the board with a drop of adhesive before they're soldered.
When mounting SMDs - piggyback or on a bare board, I tack one lead with a
slightly wet
Yes, it has been an informative thread indeed. I considered weighing in,
but everything seemed to be covered in excellent detail. I will say
that, based on my measurements, a much bigger issue today is transmitter
performance rather than receiver performance. The main culprit is of
course
The one of the interesting things about using personal computers for SDR
is
imho that generally more people can take part in their development in
major
or minor ways. This is why I just recently decided to purchase the QS1R
I can understand the attraction of that for hams, just as I
On Thu, 2008-12-04 at 06:10, Jon K Hellan wrote:
G4AFU Paul wrote:
For some unknown reason my K3 (897) tripped out 3 times last night when on
160m cw.
...
This happens to me when SWR is a bit off, and also happened with my
previous rig. I haven't measured, but I suspect that it's pulling
Julian, G4ILO wrote:
a dedicated and focussed team, as in the case of Microsoft.
That should have been as in the case of Elecraft!
-
Julian, G4ILO. K2 #392 K3 #222.
http://www.g4ilo.com/ G4ILO's Shack http://www.ham-directory.com/ Ham
Directoryhttp://www.g4ilo.com/kcomm.html
Hi Ron and the group,
I use a homemade (by my friend K8DR) hold-down tool for soldering SMT parts,
and I agree with Ron that they get easier to install with a little practice.
However, I still believe that most hams would find easier the through-hole
version of the audio upgrade mod, and since
Nico, this is truly exceptional phase noise performance! My sincerest
congratulations to you. Have you described how you achieved this somewhere?
73, Bill W4ZV
Nico Palermo, IV3NWV wrote:
Bill,
the phase noise of Perseus is as follow:
Offset (kHz) 25 1020 50
On Thu, Dec 4, 2008 at 1:54 PM, Julian, G4ILO [EMAIL PROTECTED] wrote:
The one of the interesting things about using personal computers for SDR
is
imho that generally more people can take part in their development in
major
or minor ways. This is why I just recently decided to purchase the
On Thu, Dec 4, 2008 at 2:23 PM, Bill W4ZV [EMAIL PROTECTED] wrote:
Nico, this is truly exceptional phase noise performance! My sincerest
congratulations to you. Have you described how you achieved this somewhere?
73, Bill W4ZV
Not to speak for Nico, but direct sampling SDRs use a
On Thu, Dec 4, 2008 at 1:54 PM, Julian, G4ILO [EMAIL PROTECTED] wrote:
I was really more concerned with what support there will be for the current
generation of SDR radios in, say 10 years time. If the PC that runs the
current software dies, and you can't get a new PC that runs XP (or whatever
If it only takes 15 minutes to install the RFC 47 via the long method, then I
suspect this is a modification in a K3 without the KRX3. I used the short
method because I did not want to have to remove the KRX3 and the TMP cables. I
find the TMP cable connections to the KRX3 are difficult to
Jim,
I'm with you in that most folks find it easier to work with leaded
components on a SMT PC board -- until things start going bad. So, I'll take
the counterpoint on this one...
I learned the hard way that using leaded components on a surface mount
pad/trace can lead to permanent PCB
Phil and Chen,
Thanks! I thought it looked like crystal filter performance but was
thinking it was synthesized. This looks like a much better system
than Flex's QSD. I wonder how long it will be before Flex goes to the
same system? Phase noise and BDR have been Flex's weak links IMHO.
I just
Hello,
I am working on the receiver and transmitter alignment at the end of the
build process. I used a signal generator to peak up all of the band pass
filters and they works as expected. When I try to check the transmit
alignment I am not getting to the proper power output. Even peaked up for
On Dec 4, 2008, at 1:06 PM, Bill Tippett wrote:
This looks like a much better system than Flex's QSD.
For single signal use, I agree completely Bill. By the time you've
matched the sampling rate of a direct SDR to a signal with 500 Hz
bandwidth, you have adequate dynamic range. (And not
thanks for the idea don . i have 2 spdt relays coming. should do what i
want. the article you mentioned helped alot/
thanks, ron
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info
Roy Morris wrote:
If it only takes 15 minutes to install the RFC 47 via the long method,
then I suspect this is a modification in a K3 without the KRX3. I used
the short method because I did not want to have to remove the KRX3 and
the TMP cables.
Another variation is to remove the top
I have found something in the operation of the digital bandpass filters I don't
quite understand and hope someone will be able to set me straight. When
listening to a CW signal, the bandwidth is narrowed. I have a 2.7 kHz and 400
Hz roofing filters installed. As I narrow the bandpass with
I have found something in the operation of the digital bandpass filters
I don't quite understand and hope someone will be able to set me
straight...
Can anyone explain what might be happening?
Yes.
I suspect you are using the Rx Equalizer and have it set to boost your
desired pitch. If
Bill, W4ZV wrote:
Make one! http://www.al7fs.us/AL7FS5ATSprint2.html (2nd pix down)
...and http://www.qsl.net/n5ib/surface_mount/
73, Bill
Thanks, Bill. I heartily endorse this little device. I built mine from a wire
coathanger, a couple of fishing weights, a toothpick and a two-screw
I do not think anyone opting to make the short procedure has anything to worry
about regarding putting pressure on the PC board when mounting the RFC 47.
This choke is mounted between the thru-hole on the 12V trace and the pigtail
through the solder pad for the original RFC on top of the
JH,
I would definitely say the 20/30 meter low pass filter needs to be
checked. Low power output combined with HI CURR messages normally
indicate a low pass filter problem.
I am not certain how you are getting power output on 10 meters, but not
on 12. That may be a bandpass filter problem.
Pardon for a dumb question, but I've hit that wall... again!
I talked to Dale at Elecraft and he suggested some of you may know the
answer as he had no experience with hooking up and making K3 work with a
computer so it will work using the sound card to have a full array of modes,
etc.
Connect Line In / Line Out on K3 and the Line In / Line Out on the sound
card and away you go.
73,
Ken K3IU
Lynn Lamb, W4NL wrote:
Pardon for a dumb question, but I've hit that wall... again!
I talked to Dale at Elecraft and he suggested some of you may know the
answer as he had no
Lynn Lamb, W4NL wrote:
Pardon for a dumb question, but I've hit that wall... again!
I talked to Dale at Elecraft and he suggested some of you may know the
answer as he had no experience with hooking up and making K3 work with a
computer so it will work using the sound card to have a full
Guess I misunderstood how the K3 did this and purchased the serial to
USB cable at the time the K3 was ordered and it does the trick relative
to downloading the firmware and very well. I expected this same cable
to give me all the audio in and out plus key the rig...
No, it is just a serial
Does anyone have a K2 Serial interface for sale? Maybe you added the 100 watt
module and have a spare one laying around? Let me know off list if you have
one for sale and what the price is. Email me at
[EMAIL PROTECTED]
73,
Ken/NO4D
--
View this message in context:
Lynn,
Connect the computer *soundcard* input to the K3 rear panel Line Out,
and the computer Line out to the K3 Line IN jack. Use two stereo cables
with a 3.5mm stereo plug on each end (the plugs must be stereo even if
the signal is in only one channel - typically the left channel).
You
Can we end this thread? It seems to have drifted away from Elecraft. I, and I
believe others too, could care less about all these numbers and the discussions
surrounding them.
Dave N8AG
___
Elecraft mailing list
Post to:
K2 gurus:
I got a note from Gary (support) and Don (w3fpr) with some ideas.
--I checked the low pass filters and the number of turns.
--I validated that T4 is oriented the right direction
--No burnt relays
--8R/8T are ~8vdc (R-7.87/T-7.815)
--8R on transmit goes to 0.245vdc
--I clipped W1 to
JH,
Yes, based on the data you have after the 'clean-up' tasks, I do suspect
that you have one of the PA transistors that are not working.
Try one more thing - set CAL CUR at 3.50 Amps and try again with the
power set to 5 watts only - you are likely to see no Hi Cur messages if
indeed one
Moreover, that is not to say that the QSD guys can't put a roofing
filter between their quadrature mixer and the A/D converters (just
that they are not doing it today) to get even better BDR than
they are getting today.
This QSD roofing filter would just be a matched low-IMD LPF
Lyle KK7P wrote:
PS - I would expect FLdigi and MixW to work as well, but have not
tried them so cannot speak from experience.
fldigi works well with the K3 on Windows and Linux. I haven't tried it
on MacOS but I'm told it works.
The RigCat XML interface for rig control works FB with it as
60 matches
Mail list logo
