Like Don, I wear hearing aids (both ears) about 18-hours/day. I can
choose a flat response setting (called music or TV) and use it for
ham radio as it produces the crispest audio on voice. I found I
prefer using an external speaker over the internal K3 speaker. The
10-inch National Speaker
The Shannon formula, and in particular the error free condition, is only
valid for gaussian noise. It is not valid for, for example, impulsive
noise. It also only strictly applies when the coding delay goes to
infinity. (If the "noise" is predictable, it can exceed the Shannon
limit. One al
Hi Gary
Oh no, we dont any more LIDS with amplified CB microphones on the bands . The
ESSB garbage produces enough splatter as it is.
We dont need to encourage the ""all knobs to the right"" brigade with
amplified microphones.
The K3 has HI and LOW mic gain settings, and thats more than enou
I finally got to try my P3/K3/XV-144 out in the EME "contest" this past
weekend. To my amazement, I could
actually see the WSJT tones off the moon for the stronger stations. Most of the
time I couldn't, of course, but the P3 was very useful for spotting QRM and
birdies when hunting around for a
On Oct 5, 2010, at 12:36 AM, David Woolley (E.L) wrote:
> The Shannon formula, and in particular the error free condition, is only
> valid for gaussian noise.
Yes, the main Shannon Theorem (Theorem 17) mentions "thermal" noise. (In
addition to being Gaussian, Theorem 17 also requires that t
suggest you join the Elecraft_K3 yahoo group
(http://uk.groups.yahoo.com/group/Elecraft_K3) and then you can put them in the
photos section.
73 de M0XDF, K3 #174, P3 #108
--
Too many parents make life hard for their children by trying, too zealously, to
make it easy for them. -Johann Wolfgang v
1. The original question I proposed in starting this thread was: "(a) Is
there irreversible signal loss in reception of a RF signal using the K3,
and (b) is it possible by use of fancy speakers and high fidelity audio
amplifiers at the output to recover signal fidelity?" If the answer to
(a) i
Are the results of this calibration dependent upon the gain dialed in
for the narrowest filter?
The calibration is done with narrowest filter in place.
73 de Brian/K3KO
No virus found in this outgoing message.
Checked by AVG - www.avg.com
Version: 9.0.862 / Virus Database: 271.1.1/3178 - Releas
Hi Dale,
If that BHI board is the same as the Gap ANEM units, then you will find that
for even an outboard AF solution, it works surprisingly well. So far, that has
been my point of reference when comparing NR performance. With that said
though, I have to disclose the fact that the BHI or ANE
Owen,
I am going to assume that you were successful with the Alignmant and
Test Part II and were able to receive 40 meter signals. If not, you
need to backtrack a bit and get receive working first.
The easiest way to troubleshoot a "lack of power output" problem is to
do Transmit Signal Tra
I don't know if it has been mentioned, but one must also take care when
increasing compression and using an amplifier. Too much, and the amp goes
out of linearity resulting in "flat topping" as can be easily seen on a
bandscope.
Just a thought...
--
73 de James K2QI
President UNARC/4U1UN
___
Hi Eric,
You can improve the contrast of the waterfall by expanding the SCALE.
To maximize waterfall contrast, I adjust the REF LVL to place the noise
right at the bottom of the spectrum display and then expand the SCALE as
much as possible while keeping the signals below the top of the screen.
A
Folks - Please drop any direct criticisms of other ops or operating
modes (like ESSB) from this thread. Please keep it friendly here.
Its OK to discuss the technical merits of various settings and operating
methods, but it is inappropriate to call anyone a lid or to characterize
anyone as a
I have a K3/100 on order and I already have this Kenwood KPS-15 power supply.
It seems to have the capacity to power the radio. Thoughts?
http://www.universal-radio.com/catalog/hamps/4273.html
__
Elecraft mailing list
Home: http:/
On 10/4/2010 7:24 PM, Joe Subich, W4TV wrote:
> > Could this be alleviated when using a Turner +3 microphone.
> >in the case of a soft spoken operator?
>
> Only of the "soft spoken operator" is in a very quiet shack.
> The typical problem is that the operator's voice is barely
> louder t
Hi,
I am sure it's more than useable. Can other owners answer the following two
questions:
Is the negative output connected to chassis and the ground prong of the AC
plug? If it is, can it be disconnected easily (on the MFJ4125 I currently
use this is next to impossible)?
Is there any RF hash?
On 10/4/2010 11:13 AM, Rob May wrote:
> I'll turn the compression up to 25.
That is the WRONG WAY to set compression. Rather, compression should be
set using the COMPRESSION section of the K3's meter (the one that's to
the left of the ALC indicator.
Grant said:
>Just guessing here, but 65 w
When P3 is turned off, I start the K3 Utility, and I will see my text decode
data (both CW and PSK) in the VFO B window, and in the K3 Utility Terminal
window. However, when the P3 is turned on, the data is still shown in the
VFO B window, but does not show up on the K3 Utility Terminal screen.
K
When P3 is turned off, I start the K3 Utility, and I will see my text decode
data (both CW and PSK) in the VFO B window, and in the K3 Utility Terminal
window. However, when the P3 is turned on, the data is still shown in the
VFO B window, but does not show up on the K3 Utility Terminal screen.
Looks (and specs) just like one I use on my K3/100. Trug gesund!
John Ragle -- W1ZI
=
On 10/5/2010 12:19 PM, robt...@comcast.net wrote:
> I have a K3/100 on order and I already have this Kenwood KPS-15 power supply.
> It seems to have the capacity to power the radio. Thoughts?
>
> http://
Is this Anderson PowerPole a connector I need to buy? If so can you provide a
link? BTW, if it isn't obvious. I'm a new General class licensee as of
Saturday.
Robert KC9QOE
- Original Message -
From: n...@widomaker.com
To: robt...@comcast.net
Sent: Tuesday, October 5, 2010 12:
On 10/4/2010 6:40 AM, Rick Staley wrote:
> In connection with the second topic, I wonder what other K3 owners
> might have done.
> Have you gained any improvement by using external speakers, PC-type
> speakers with audio
> amps built in, or even something like a stereo amp with hi fi speakers?
maybe or maybe not. Read this:
http://www.cometantenna.com/pdf_review/SS-330W_QST_review.pdf
Might be a noise issue.
If you have it just try it and you will find out.
/Jim
On 2010-10-05 19:21, John Ragle wrote:
>Looks (and specs) just like one I use on my K3/100. Trug gesund!
>
>
I've been using a K2 IF version of V6.2 Softrock Lite as a pandapter
interface with my K2, and the results are OK but not great - among other
things, the K2 IF is very prominent on the screen. How much improvement
could I expect if I replace the Softrock with an LP-PAN? (I have a Z1
buffer amp
A lot of the "punch" on older rigs is because the low end rolloff on
TX for communications audio IS IN THE TX components and cannot be
changed or "optioned" out. The K3, to satisfy all the vocal desirers
of options, lets the user set everything, so that every body can have
it his own way, from "I
> You're absolutely correct, David. Some people are just reluctant to
> get their diaphram into the act and speak with confidence, not just
Full ack.
Go to a news studio or most other TV studios, and listen to with which
volume and dynamic style is spoken. I think a lot of Hams would be very
I see it too.
On 04.10.2010 16:59, vidi wrote:
> I noticed that on 17.6792mHz there is a strange ghost signal visible on the
> P3.As I tune over it, it moves in the opposite direction to VFO dialing
> direction! I turned everything off in the shack and also selected the dummy
> load but it
Bob:
There are two possible 'spike' concerns here.
One is the so-called 'zero' point spike in the software defined
receivers. This is mostly a function of ground loops between the sound
card and the Softrock. It can be removed by transformers or some careful
work with the audio cables and co
Currently the K3 Utility's text decode display does not work when the P3
is turned on. That is because it uses the old K3 "TT" (Text to
Terminal) command which is not supported by the P3. K3 Utility is going
to be modified to support the new "TB" (Buffered Text) command so that
it can display tex
I have the same problem, except that I get no decode display
whatsoever on the K3 Terminal program even with the P3 off (except
occasional lines of gibberish)! Display on the K3 VFO B is fine, as is
text transmission from the K3 Terminal program to the K3. I am using
the newer FTDI based Sa
Thanks Jim. I'll just have to try it and hope for the best. Wife is having a
heart attack about what I've already spent. If the PS doesn't work out, I'll
have to live with it a while until it can be replaced.
- Original Message -
From: "Jan Erik Holm"
Cc: elecraft@mailman.qth.net
> Now you have K3 users with no clue about how to set the TX eq and
> clipping level OPTIONS to get the IDENTICAL shape to their voices on a
> K3 as the other rigs. There actually is a clarity advantage to the
> K3's clipping method IF you know where to set all the options.
How very true ...
To ALL,
I originally ordered my Elecraft K3 Kit back on Jan 19, 2008 and at that time I
was a Ham with a Technician license.
I ordered the following components:
K3/100 Kit; KAT3 ATU Kit; KFL3A-6K 8 Pole Filter; KFL3B-FM 7 Pole Filter for
FM; and a MH2-R Hand Held Mic.
I have since attaine
Where does TXG VCE fit into this brew?
Dick, WO1I, K3# 911
Quoting "Joe Subich, W4TV" :
>
> > Now you have K3 users with no clue about how to set the TX eq and
> > clipping level OPTIONS to get the IDENTICAL shape to their voices on a
> > K3 as the other rigs. There actually is a clarity advant
Jim,
> This only works with full bandwidth audio (that is, 20-20,000 Hz);
> the bandwidth we transmit would fit into one of those individually
> processed bands.
Wes Stewart, N7WS had a very successful split band approach for amateur
use years ago ... it was butchered by Alpha (the Vomax) but
I think that Wayne has mentioned the differences in an earlier post. The first
four NR settings F1-x to F4-x are for CW ONLY, F5-x and higher are for SSB. The
different NR settings are not called out as well as they might have been in the
manual. I, too first tried F1-1 through F4-7 for SSB
All:
I have no issues with lack of "punch" with the K3, and I am
considered an audio "dweeb" by some of my contesting
contemporaries.
On my former TS-850, I had "lotsa punch". My audio chain
consisted of the following:
Heil DX-4 headset
Behringer EuroRack 802 mixer with three band "classic" EQ
R
The latest version of WriteLog (10.80) includes the capability of sending K3
commands via your PC keyboard. I was interested in sending the CW AUTO SPOT
command using the F12 key on my PC keyboard. The serial command for that is
SWT42;. I'm sure some of you have other commands that you might like
On 10/5/2010 2:09 PM, Lu Romero wrote:
> First, the DX4 is a "close talking" microphone. You have to
> almost eat it for it to work right. The CM-500'ds Electret
> capsule has a pronounced proximity effect. You HAVE to keep
> it AT LEAST an inch from your mouth or it sounds mushy and
> bassy.
Hy Don, i Made a new measure with an Hp multimeter with 5 decimals and the
result was 2,9289 ohm a more confortabile data i think.
Pippo
IZ2NYY
--
View this message in context:
http://elecraft.365791.n2.nabble.com/K2-Control-Board-R20-bad-value-tp5598816p5605065.html
Sent from the [K2] mailing
There is a very nice program available that does this. I'm away from home at
the moment but search for K3 EQ with you favorite Internet search product.
Dick, K6KR
Sent from my iPhone
On Oct 3, 2010, at 19:16, w0ih wrote:
>
> One thing that I have a somewhat difficult time with is getting th
This was supposed to go to the reflector, sorry Joe.
I think top-post is the reflector standard, see below. I apologize, I
don't know who wrote what Joe quotes ...
I'm not sure I understand usage of the term "clipping" that has crept
into the "where's the punch" thread.
From my limited FM/AM
?Don:
If Owen also has no transmit power on the other bands then are his symptoms
identical to mine?
Brian Denley
http://home.comcast.net/~b.denley/index.html
- Original Message -
From: "Don Wilhelm"
To: "Owen B. Mehegan"
Cc:
Sent: Tuesday, October 05, 2010 10:01 AM
Subject: Re: [El
Fred,
> From my limited FM/AM/TV broadcast experience nearly a lifetime ago
> while a college student, clipping and compression, at least then, were
> two very separate things.
I am very aware of the difference between clipping and compression.
I spent the majority of 20 years as a Director
Hi Brian -
I haven't tried transmitting on any other band yet, but your
description of only getting about .5 watts out when you tune, and L1 and
L2 having no effect on this, mirrors my own.
Tonight I will begin tracing the circuit with the RF probe. I also have
access to some more sophisticated t
For AM users, could we get the ability to invert the voice phase as a
feature of the K3? This would allow us to make sure that the audio phase
orientation is correct where the positive peaks are always greater than the
negative peaks. Even better, it would be cool if the rig could auto detect
an
I used to have TS-850 and FT-1000MKF. The processor in TS-850 was very good
and in MKF not as strong but audio was nice. If you read some reports, ALC
in 1000MP and probably other radios in the series is too fast and produces
lots of IMD at high processing. ALC in K3 is very slow and thus avoids
d
I am trying to clean RFI on 160m in anticipation of the contest season.
When KUSB is connected to K3, it emits white noise of about 5 Khz BW around
1833. I attributed it to U-verse. The noise is there when KUSB is fully
inserted into K3 but no noise when only the grounds are connected. The
noise
On 10/5/2010 5:11 PM, Tim Tucker wrote:
> incorrect phase orientation
The correct word to say what you mean is POLARITY, NOT PHASE. Phase is
a continuously valued function, and has the units of degrees. Polarity
is the word that describes whether the waveform is inverted or not.
Changing the
I've spent the last 4 weeks or so with a problem I noticed in
Alignment and test Part III on page 78 of the manual. I've been
monitoring some of the posts here which have been very helpful in
keeping me on the right track with the debugging. My own K2 would only
produce 1/2 watt of output w
On 10/5/2010 5:38 PM, Ignacy wrote:
> When KUSB is connected to K3, it emits white noise of about 5 Khz BW around
> 1833. I attributed it to U-verse. The noise is there when KUSB is fully
> inserted into K3 but no noise when only the grounds are connected. The
> noise is some 10 db above band no
OK, thanks for the education. I'm not an RF engineer, but every product on
the market I've come across (doesn't mean much) and discussion I've read
(start with http://www.nu9n.com/am.html) calls what I'm talking about as
phase inversion. They could all be using the wrong term for all I know.
I c
With that introduction I guess I have to respond.
Actually, credit for the original concept belongs to Walt Schreuer, K1YZW. He
developed the "SPB-3" sold by Maximilian Associates in about 1976. No
schematics were provided, of course, so I and my late friend Jim Metzer, W7TKR,
produced our ow
Tnx. It is 1.5 yrs old so no warranty. It took me lots of time to find that
KUSB is noisy. No way without SDR-IQ as I would have never suspected a USB
adapter.
Ignacy
On Tue, Oct 5, 2010 at 8:46 PM, Jim Brown-10 [via Elecraft] <
ml-node+5605404-836562000-193...@n2.nabble.com
> wrote:
> On 10
On 10/5/2010 5:58 PM, Tim Tucker wrote:
> OK, thanks for the education. I'm not an RF engineer, but every product on
> the market I've come across (doesn't mean much) and discussion I've read
> (start withhttp://www.nu9n.com/am.html) calls what I'm talking about as
> phase inversion. They could
On 10/5/2010 6:04 PM, Ignacy wrote:
> Tnx. It is 1.5 yrs old so no warranty. It took me lots of time to find that
> KUSB is noisy. No way without SDR-IQ as I would have never suspected a USB
> adapter.
This is not a WARRANTY issue, it is a DEFECTIVE PRODUCT. When a product
produces RFI, it is D
I used the P3/K3 combo to keep an eye on the activity on the bands 1.3 thro
10GHz during the European tropo microwave contest last weekend. It was useful,
however I had to disable the direct frequency readout on these bands as the P3
"tune and click" knob could not cope with bands above 144MHz. Rep
I added 160 to my K2 last week. I am very surprised how many QSO's I have
had on that band while only running 10 watts. The antenna is just a 80 meter
Carolina Windom with the coax shorted and fed as a single wire. Built in
tuner shows a 1.2:1 match. Been a ham for 57 years and this is my fir
HI
I WENT TO SAMS CLUB AND FOUND 2 60 DOLAR STERO SPEAKERS THAT SEEMED OK, CALLED
COMPANION 2 PRODUCT CODE 035734, AND THEY WORK GREAT. MY RADIO SOUNDS LIKE
AN 5K MP ON STEROIDS
GOOD ON CW ALSO AND THEY ARE STEREO.
BILL
__
Elecraft m
Jim:
My trusty 10 year old Yamaha YST-M101 powered speakers on my computer
(purchased at Fry's in Sunnyvale!) have never received any RFI at up to 600w
pep here at my station. Maybe it's the (guffaw!) "Active Servo Technology"
in them that does it, eh? :)
For non powered speakers, I have an anc
Jim:
Its very mildly cardioid then! :) This aint no shotgun, Jim!
I choose not to compensate for the boominess with EQ and not eat this mic
like an HC4 as it adds to the distortion I hear in the monitor and see on
the scope. I would rather run the mic gain a little hotter and put up with
the r
Or, he could scour E-Bay for a Kahn Symetra-Peak!
-lu-w4lt-
Message: 37
Date: Tue, 05 Oct 2010 17:39:37 -0700
From: Jim Brown
Subject: Re: [Elecraft] K3 Feature Request
To: elecraft@mailman.qth.net
Message-ID: <4cabc549.6000...@audiosystemsgroup.com>
Content-Type: text/plain; charset=ISO-8859-1;
A couple of further comments, Bob...
There are pictures of the K2 BFO leakage being displayed in PowerSDR/IF
through LP-PAN using the two connection points that you can compare to
each other and also to the results you are seeing. They are in the K2
installation manual for the Z1,
http:/
Regards to all, it is the first time that send a message to a mailing list, I
hope to do it correctly.
Yesterday I have discovered that in 18 MHz are feel of the Broadcasting.
The antennas is a Dipole for 10MHz and 18 MHz connected to the same coaxial
cable.
The signals were weak and doesn't dis
Or Lyle could simply include the "phase scrambler" (phase rotation)
function in the DSP. IIRC, the Kahn box simply ran the audio through
a filter that caused a frequency dependent phase rotation resulting
in audio that had symmetric positive and negative peaks and avoided
issues with microphone p
73 to all,
if is wants use the PRO-SET headphones with the K3 (front panel mic connector)
a small change to the cable AD-1-K is necessary.
Inserting the resistance that would serve to modify the K2 in the 8 pin female
connector bethween PIN1 and PIN6.
Otherwise the microphone doesn't receive the
> Can KUSB be damaged to produce RFI yet be functional as an adapter?
*ANY* USB adapter will generate a lot of RFI and continue to work
properly if the shield of the USB cable is open or the shell of
the motherboard USB connector is not properly bonded to the circuit
board groundplane.
The firs
Brian,
Even though Owen's outward symptoms are similar to yours, the failure
point is likely quite different.
That is why Transmit Signal Tracing is important. There are 5 active
devices in the transmit chain as well as the bandpass and low pass
filters, and the oscillators (VFO and BFO) can
Les,
Your implication that an active device failure is a rare occurrence is
correct.
Is your Q6 a 2N5739 or a 2N2166? If it is a 2N5739, change R46 from the
270 ohms value to 330 ohms to reduce the base current and also the
heating of Q6.
73,
Don W3FPR
On 10/5/2010 8:46 PM, Les Rabe wrote:
Yep, that's exactly what I'm thinking. You either do it automatically or
give the user the ability to switch it themselves. For the UI, it could be
as simple as an additional option in the EQ settings for AM mode (press and
hold 1 to Invert Phase, or something like that...).
I think you guys get
Hi Dave,
The latest P3 firmware (00.36) fixed a bug that prevented the P3 from
properly indicating K3 frequencies above 200 MHz.
Alan N1AL
On Tue, 2010-10-05 at 21:23 -0400, elecr...@g4fre.com wrote:
> I used the P3/K3 combo to keep an eye on the activity on the bands 1.3 thro
> 10GHz during th
I wanted to make sure and follow up my AVG power output comments that I made
earlier in this thread because I spent some more time testing. Several
private emails confirmed my suspicion that others were able to achieve
better results than I was seeing.
Tonight after playing around with the rig so
Thanks again for the suggestions Don. Tonight I started doing some
signal tracing, and my RF probe seems to work fine with my DMM.
However, I ran up against a different obstacle: I don't have a signal
generator handy, and the LPF/BPF/T-R Switch tests seem to require one.
I can get access to
On 10/5/2010 10:39 PM, Tim Tucker wrote:
> Typical voice response produced about 40-45 watts AVG. This is considerably
> better than I reported earlier, all things considered.
I would be very cautious about saying it's BETTER until you get some
critical audio reports on the air. You could easi
Tim,
As far as the response of the K3 is concerned, I refer you to Guy
Olinger's (K2AV) recent posts. The K3 is a highly configurable
transceiver, and "Read The Fine Manual" is an important step. If after
reading, you have problems understanding the implications, definitely
ask here on the
Owen,
You should not need a signal generator for Transmit Signal Tracing - I
believe you are in the Receive Signal Tracing area - skip that and go to
the Transmit Signal Tracing. The K2 itself is the signal generator for
this TX signal tracing.
Try increasing the CAL CUR setting to 3.50 Amp
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