Of course, the bug must be properly adjusted. Whoever said they truncate
dits doesn't really know about bugs, matter how many years they've been
using them. Bugs are mechanically capable of virtually machine-perfect code.
The fact that they don't send machine perfect code is all in the operator.
Just checked eHam.net ... as of 2:53 am EDT, its up ...
Wey ...
K8EAB
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I've dug around and they're worried about it too on QRZ, the word is
they're doing some rebuilding. Sheesh DOS attacks, won't some ppl
grow up? 73 de Alex NS6Y.
PS just built the little ciggy-pack ATU and checked for basic
heartbeat, it's aliive! I have to do more testing now, you see
eHam.net site is back up!
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Help:
Vic Wrote:
I've always wanted to try some kind of
crossover device that would distribute the signal between the two
earphones according to frequency. Then as I tune through a CW signal,
it would seem to move.
This has been on my mind too for a long time. I even seem to recall I've
got a
The eham.net web site is up now (0757 UTC).
Bob, N7XY
On May 24, 2006, at 10:44 PM, wayne burdick wrote:
Alexandra Carter wrote:
I think the web site eham.net is down, as in permenantly. This is
a loss because it's a useful source of reviews on all kinds of
equipment, not only Elecraft
FWIW it's 100% OK here, I've not noticed any down time at all.
Simon Brown
---
http://blog.hb9drv.ch/
There are two major products that came out of Berkeley: LSD and UNIX. We
don't believe this to be a coincidence.
- Jeremy S. Anderson
- Original Message -
From: wayne burdick [EMAIL
I haven't had any trouble bringing it up and just did. It has not been down
for a few days either, so there must be a different problem interfering with
your connecting.
David, WA7ZYQ
- Original Message -
From: Alexandra Carter [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent:
A very stimulating thread !
My thoughts so far :
* A manual ATU(AMU)(Transmatch)- as already suggested - but with Quiet Tune
facility.
(I presume not easily do-able with something like the excellent T1...)
* PSK31 (plus some other data modes...) - some kind of smart SW/HW
Nope, guess not.
I should of bought more Elecraft stuff instead of an eHam subscription.
That site is batting 1
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Hi,
What I would like more than anything else would be a board for my K2/100
that would give me true FSK and a dual filter system to match. Then, I could
live without my IC-756ProIII.
Roger K8RS
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I was on 80 meter CW last night on 3596 running a traffic net. After the net I
received the following email.
I was listening on 3936 this evening and since no one was on all I was hearing was the usual background noise. At 7 PM I started to
hear a very chirpy CW signal of about S5 chirping in
but I dont understand him.
in the display on the place of the mode indicator is alternativ
blinking the mode c and
a F. What does the F mean?
I looked all over the manuals, but was missing the right line.
Thanks Hajo
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~~
N2CQ QRP CONTEST CALENDAR
May 25 - June 25, 2006
~~
QRP MINIMAL ART SESSION (80M CW) *** QRP Contest ***
May 25, 1900z to 2300z
Rules:
Keith,
I did not see anyone mention it on the reflector, but what I find is a good
entry to start searching a special callsign is: Google. Just type the call in
and you will be surprised what you find there. There are referencies to other
sites, for instance the QSL manager etc.
73/72
Rob,
New fun items?!!!
Cool, I'll start stockpiling cash now...
;o)
Julius
n2wn
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The mentioning of buying gold plated contacts.
How about having the old contacts gold plated?
Seems to me it would bring down the price considerably.
Ron Pyle
kc0qxu
Hot Springs, SD
When being chased by a bear. You don't have to outrun the bear. You just
have to outrun the other guy.
Beware of
eHam is still down and has been down for days for me.
Mike Scott
AE6WA
Tarzana, CA (near LA)
Elecraft KX1 4-Watts
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Bob Nielsen
Sent: Thursday, May 25, 2006 12:58 AM
To: Elecraft
Subject: Re: [Elecraft] Re:
Look in Experimental Methods in RF Design.
The article there also references a lot of QST articles.
Mike Scott
AE6WA
Tarzana, CA (near LA)
Elecraft KX1 4-Watts
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of pa3gyu
Sent: Thursday, May 25, 2006 12:34 AM
I breadboarded a circuit a while back based on Harry Lythall's (SM0VPO)
website.(http://web.telia.com/~u85920178/use/stereo.htm).
As I remember, it worked ok, but signals on the edge of the filter skirts
produced annoying sounds. I was going to put it in my HW-8. It is now on the
gotta get to
Jim -
Yes, I waited for the display to go off before taking the current measurement.
73
Bob
On 5/25/06, k4zm [EMAIL PROTECTED] wrote:
Bob:
Did you measure the current with the display lit? Also the level of
brightness you have the display adjusted for will vary the current drain.
The
Hi -
I'm thinking of adding the KDSP2 option to my
K2 #5422. I just went thru the Spectrogram v5.17
14-page step procedures, to align my new K2's CW,
rev CW and SSB filters. I'm not sure I have them
perfect yet - but I seem to be making headway.
My question, as a dumb transceiver-theory ham,
People
You really should know. I repeatknow... hands downtube amplifiers
are the big winner in seeking esoteric audio reproduction. McIntosh brings
big bucks for a reason. Solid state just can't do what tubes can. Solid
state feels harsh, sounds harsh. Tubes bring reality to audio
There are some high-end solid state audio equipment that will add 3rd
harmonic distortion to achieve the 'tube sound'. Yes, some will pay big
bucks to be able to hear such distortion.
73,
Don W3FPR
-Original Message-
Fred (FL) wrote:
It is said, McIntosh's TUBE AMPLIFEIRS still
JUST PUT A XFORMER ON IT ...
I remember when Altec's Bart Locanthi while doing a stint at JBL
developed the first directly coupled complementary symmetry amp SE 400
It was a sold state map that WAS clean, not like Hafler's ST-120.
( that would be a dynaco)
Everyone else used output
Years ago, I was intelligent and believed that the specs on stereo gear
told the whole story. One good power amp sounded the same as another
one. Good enough was good enough, the human ear can't hear the
difference. CD players all sound the same (perfect). Tubes and SS
sound the same, all the
Any of you guys playing with hi-fi SSB with the K2? What have you done
to improve the quality of both RX and TX audio in this rig?
- Keith KD1E -
- K2 5411 -
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Tubes bring reality to audio reproduction. Warmth...
It's called second harmonic distortion. That's what the Warmth
control in master console designer Rupert Neve's effects processor
adds to the signal to produce that tube sound. He found that
customers (recording engineers) preferred a
Keith wrote:
Any of you guys playing with hi-fi SSB with the K2? What have you done
to improve the quality of both RX and TX audio in this rig?
I think you need to identify which components of the tx-rx you find
deficient
that is for communications quality audio,,, or change the
Although I was able to access the site earlier, just now I got the
response:
eHam.net
We are experiencing some technical difficulties.
We are working on them and the site will be back as soon as our
maintenance is completed.
We apologize for the downtime.
73 and Thanks
The eHam Team.
On Thu, 25 May 2006 10:36:24 -0400, Darwin, Keith wrote:
Any of you guys playing with hi-fi SSB with the K2? What have you done
to improve the quality of both RX and TX audio in this rig?
This may sound trite, but I tried my hi-fi stereo headphones
instead of my communications headphones.
Hi Everyone,
The subject SN 4401 K2 belongs to a new ham, KC0TBO, who recently asked me
to complete and align it since he was moving out of state, and he needed a
hand with it. The rig was essentially all finished along with its
accessories (KSB2, KAT2, KNB2, KIO2). It appears to be very
Ron wrote:
You really should know. I repeatknow... hands downtube
amplifiers are the big winner in seeking esoteric audio reproduction.
McIntosh brings big bucks for a reason. Solid state just can't do what
tubes can. Solid state feels harsh, sounds harsh. Tubes bring reality to
-Original Message-
From: Phil Kane
This may sound trite, but I tried my hi-fi stereo headphones
instead of my communications headphones. Boy. what a
difference!! I suspect, though, that all it does is to allow
more white noise and overtones to be heard. My desk mike
(Adonis
Hi Hajo,
You have FAST PLAY mode engaged, which means that certain switches
are enabled for one-touch message play (as defined by the FPLY menu
parameter; see page 103 of the K2 owner's manual).
The only way to turn fast-play on/off is to have one of the
programmable function buttons
Polypropolene capacitors?? You must be kidding! Although I understand that if
you immerse the entire amp in liquid nitrogen you get much less white noise
because you've slowed down the electrons.
Cheers,
Doug, W6JD
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Steve,
To me it looks like you have to break into the circuit to find out if the
control loop from VRFDET is working.
A suggestion would be to lift one end of C121 to stop drive to Q6,Q7 and Q8 and
prevent fuse popping. It should then be possible with a small DC voltage via a
pot to simulate
I just checked and still no Eham, let's hope whatever's broken can be
fixed and they're back soon! 73 de Alex NS6Y.
On May 25, 2006, at 12:04 AM, Tom Harson wrote:
eHam.net site is back up!
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Today was like hearing the First Cuckoo in Spring (although we are into
summer). I heard on my local 2M repeater, for the first time ever, an
amateur describing Elecraft, its K2, the support mechanisms and how
everyone involved functions as a Team, to one of his friends, who I
detected by the
Esteemed group,
I have really enjoyed lurking and reading this thread, which until now,
has emphasized the technical aspects of music recordings. I can't help
but add the following comments about the human aspects.
Studio recordings are wonderful in that they allow control of many
things, a
Steve,
If I understand correctly, this K2 is transmitting at full power no matter
where the power control pot is set.
This is one of the 2 more difficult areas to troubleshoot in the K2 because
it involves a loop (the other is the PLL/VCO area)
First thing I suggest putting a 20+ watt load on
I have done a couple of Binaural CW reception projects and found the
results very appealing. Let me begin by sharing a few thoughts:
1. With binaural reception you normally would NOT use tight CW
bandwidths as the object is to allow more audible information to
be processed by our brain. I think
Bart PA3GUY wrote:
This has been on my mind too for a long time. I even seem to recall I've
got a schematic saved somewhere for a circuit that does just that, so
somebody beat us to it. I just never came around to built and test it for
myself For details, contact me offline and I'll try
-Original Message-
From: Jerry Volpe
Sent: Thursday, May 25, 2006 2:35 PM
My second project began with the following in mind:
1. Using band-pass filters rather than low-pass and high-pass.
2. Include the ability to move the combined filter cross-over for
different CW offsets.
3. Get
I just powered up the K2/100 for the first time with the low-currnet
power supply and did the initial voltage checks on page 43.
D13 cathode was 143 v
U4 pin 8 was -25.54v
TP1 was 0v
J3 red lead was .091v
The manual says that J3 should be zero, Is this ok or am I too picky?
The current
Well my palms are sweaty and my heart is pounding as I pour through my new kit.
I hope I can get through this build okay. I forgot how to take Resistance
reading, I'm off to a good start.
BILL COCHRAN
BILL COCHRAN REAL ESTATE APPRAISALS, LLC
1430 N 12TH STREET
CAMBRIDGE, OHIO
43725
Jerry,
If you want to have some 'fun', monitor the voltage at J3 red lead while
varying the amount of light shining on the output transistors - you will see
some phoo-voltaic effects. So I conclude that your 0.091 volts is likely
OK.
73,
Don W3FPR
-Original Message-
I just powered up
Bill,
The K2 goes together just like any kit - one part at a time. Follow the
instructions in the manual (in order - no skipping) and be certain each
component value is correct and inserted into the proper holes, and do a good
job of soldering - that is all it takes. Take your time and do not
When I brought up binaural capability for the dual receiver K3 I had
thought of the approach taken in the March 1999 QST where I and Q data out
of the detector are preserved all the way to the headphones, nothing
different is done in the two channels other than preserving the 90 degree
phase
For those who might be interested: Kanga US sells a kit for a stand alone
binaural receiver:
http://www.bright.net/~kanga/kanga/KK7B/biqr.htm
This is not an endorsement of any kind, and I am not affiliated with Kanga US.
The page is interesting though, because it contains a link to the
Yes, the K2 goes together just like any other kit ... But the result is
not like just any other kit!
:-)
- Keith KD1E -
-Original Message-
Don Wilhelm
The K2 goes together just like any kit - one part at a time.
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On 25 May 2006 at 15:51, G3XYS wrote:
Today was like hearing the First Cuckoo in Spring (although we are
into summer). I heard on my local 2M repeater, for the first time
ever, an amateur describing Elecraft, its K2, the support mechanisms
and how everyone involved functions as a Team, to
Hello all,
An idea for the KDSP2 option? Use the DSP to generate the 90deg delay for the
I-Q outputs. Taking these two outputs (at or near the drains of FETs Q6 and
Q7) to an outboard dual pot and stereo headphone amplifier could be a simple
way to experiment with this mode.
My knowledge
That was it, the photo - voltaic effect on the output transistors.
snip...
initial voltage checks on page 43.
J3 red lead was .091v
The manual says that J3 should be zero, Is this ok or am I too picky?
Thanks again Don,
Jerry, N2UZ
___
Those who get sold by high end audio salesmen seem to believe the garbage
they tell you after a while. I was told once at a high end stereo shop that
I should buy this special speaker wire. It was stranded copper and each
strand was individually gold plated to avoid corrosion that caused
Bill, you are sure dating yourself remembering Bart Locanthi...
Just to add to the interesting discussion, I thought I would point
you folks to an interesting site:
http://www.ilikejam.dsl.pipex.com/audiophile.htm
There are links to some truly amazing audiophile enhancements that
I'm sure
It's easy Bill, approach it like your real estate job:
you begin by appraising the net worth of parts against the list;
then you heat up the pot for making it all come together;
then you finalize the deal with all the parts of the puzzle to agree
on everything and everything in it's place.
When
G'day,
This thread was getting to me.
| http://www.ilikejam.dsl.pipex.com/audiophile.htm
All is forgiven!
Regards,
Mike VP8NO
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Rich and all,
I for one have been 'sold' on high end audio, but I was fortunate to be
initially referred to an audio shop that allowed and encouraged A/B
comprisons in store, and was willing to work with me to get the best
compromise equipment that my budget allowed. That was over 20 years ago,
Polypropylene caps are useful for two main things:
1) circuits that rely on repeatable charging/discharging characteristics
(such as analog to digital converters, sample hold circuits and active
filters), due to their good dielectric absorption properties (i.e., they
don't re-charge after being
In a message dated 5/25/06 5:47:18 PM Eastern Daylight Time,
[EMAIL PROTECTED] writes:
I for one have been 'sold' on high end audio, but I was fortunate to be
initially referred to an audio shop that allowed and encouraged A/B
comprisons in store,
That's a key difference between audiophiles
Hi folks,
This is my first posting to this reflector as I'm about to jump into the
world of Elecraft and QRP. I looked at several of the kits that are
available as well as straight homebrew and decided that the basic K1 was
the way to go. I ordered the 2-band 80m/40m version and it should
I just wanted to send a note to Don and Gary and others who offered
suggestions in the repair of my new K2. I had a 20/30 bandpass filter
that was down about 70 dB from the others. Well, it turns out that C25
was open! I had Parts send me all the caps in that BP section including
the trimmers.
On May 25, 2006, at 5:02 PM, Hajo wrote:
in the display on the place of the mode indicator is alternativ
blinking the mode c and a F. What does the F mean?
You're in the CW mode, but you have FPLY activated. Depending on how
you have it configured, that means that two or more of the
On May 25, 2006, at 7:39 AM, k8rs wrote:
What I would like more than anything else would be a board for my
K2/100 that would give me true FSK and a dual filter system to match.
You'd also need to go to a 100% duty cycle PA.
The K2 does a great job with AFSK, provided you don't have RF
On May 24, 2006, at 11:39 AM, N2TK, Tony wrote:
- Fast, quiet QSK
- Dual receive - The ability to listen in stereo so when running
split you
can listen in one ear on the transmit freq and at the same time
listen in
the other ear to the receive frequency.
I want more. I want SO2R in a
Apparently there was more than a Gigabyte's worth of data transfer from my
FTP site which had photos of my completed KXPD1-K2 module plus a slightly
blurry video clip of the paddle bracket in action ... since the photos and
video clip were approximately 10 MB, I guess there were quite a few
N2TK:
- Better close in (2KHZ) dynamic range performance.
AA4LR:
For the price, the K2 has one of the best dynamic range figures, even close in.
K2's IMD degrades 24 dB from 5 kHz to 1 kHz,
primarily due to phase noise.
IMD @ 5 kHz 91 dB (ARRL)
IMD @ 2 kHz 80 dB*
Getting ready to play those great digital data sounds through
my K2, using the RigBlaster Plus as the interface. The manuals
for each are not all that clear on how to make them play well
and properly together.
For instance, both devices have serial ports, as does the
computer.
Well said Ron. The only transistor in my hi fi system is in the CD Player. It
takes a $8000 CD Player to sound as good as my $600 Turntable. (Yes it hurts!)
Sorry... off this reflector topic I know, so I will redeem myself and say the
new Elecraft 1500 amp looks pretty good. Well done
Speaking of binaural reception. In this sense it is using a setup
that is able to put the lower sideband information in the left ear
and upper sideband information in the right ear. As one tunes
thru a signal (SSB, or AM or CW with a product detector) it
will appear to come from one side ,
One of the cheapest add-ons for any ham radio is opening
the mono audio to binaural. Stereo headphones are standard to-day.
A small box is easy to put in between rig and phones.
Our best computer is between our own ears. This machine works
in molecular level.
In headphones we need phase
Weymouth Walker wrote:
Apparently there was more than a Gigabyte's worth of data transfer
from my FTP site which had photos of my completed KXPD1-K2 module
Lots of hits is usually a good thing :)
Just to make sure there's no confusion: the paddle shown in Weymouth's
photographs is
On Thu, 25 May 2006 16:35:57 -0600, BMW wrote:
I don't really know of any reason to use them in audio circuits over
ceramics or bipolar electrolytics (depending on capacitance value
needed).
I work in pro audio, and am a Fellow of the Audio Engineering Society,
but I am NOT a High Futility
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