Wes Stewart wrote:
"The crystal filter in it (and the 75A-1 and a dozen other receivers I've
had) worked the same way. We've come full circle."
I feel that this discussion hit the nail on the head only when it combined
the environmental filtering with the peak as in the FT-1000D. Going back t
K5LAD wrote:
>
>
> I thought of all the things that made this activity into a "knock your
> socks off" customer service example.
>
> Then I thought about the competition and wondered how many of
> this list I would have seen from them if my transceiver had
> displayed a different name on it
All of this talk about peaky filters for CW makes me want to find the B+ short,
that I've been meaning to fix for about 10 years, in the receiver that got me
going in this hobby, my original 1941 BC-342N.
The crystal filter in it (and the 75A-1 and a dozen other receivers I've had)
worked the s
There are two 'gain calibration' procedures. One is for TRANSMIT gain which
requires a
dummy load. The other is for receiver RF gain and it can be done with a signal
source or
by loading the factory defaults without a signal source.
It is on the Calibration page of the K3 Utility and is a butt
Just a note to reinforce what so many of us know about the
quality (and quantity) of the customer service provided by
Elecraft. It's not the first time they've helped me and I'm sure it
won't be the last. certainly won't be the last time I'll need
their help.
My K3 developed a problem
True, true.
My Vandersteen speakers that I use for my home theater listening must be
placed more than 2 feet from the wall, and are mounted on 3 point floor
stands. I did not ask a decorator, I asked my audio experts - the
decoration is secondary to the acoustical performance. One must make
I rarely turned off the APF's in my FT-990 and FT-1000D
when I had them.
It's exciting to hear that an APF may appear in the K3!
73! Ken Kopp - K0PP
elecraftcov...@rfwave.net
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Al,
Trying to interpret your message.
1. You are a contester and don't think you will use the APF filter in a
contest.
2. You believe FT-1000 contesters do not use APF during a contest.
3. The discussion of APF for contesting is not relevant to you.
4. You suspect APF is not relevant to
Don Wilhelm wrote:
"Any radio will show its true audio traits if it is fed into a good
wide-range speaker (or amplifiers and speakers)."
I strongly agree, but theoretically a speaker with an intentionally limited
response (as opposed to a cheap speaker) can to some extent cover up some
prob
This will be my last post on the subject because some people don't understand
that I'm only trying to convey that you don't need 800 dollar nearfield
monitors that come from a professional studio in order to enjoy the sounds
coming out of your K3.
Yes, the NS10's and the Tanoy speakers require
Hello Group,
I am going to this http://apdxc.org next week in Osaka. Am I able to meet any
Elecrafter there?
73
Johnny VR2XMC
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> I changed out my old Dell for a newer and faster dell OPtiplex
> GX620. Now I can not get MMTTY to run.
Your problems sound a lot like soundcard configuration issues.
> The Sound card in the GX620 is Analog Devices Sound Max.
Unfortunately, Analog Devices provides no end-user support (the
On Oct 27, 2010, at 5:38 PM, Robert Seymour wrote:
> Instead of two-ring figure for the MMTTY XY plot, I only get a blob and
> jibberish printing out. When running WriteLog, the sound card is able to
> take WAV files and input them to my K3 transceiver.
If you are seeing a fuzzy blob at the
Another K3 feature that removes yet another external box in
my system! I can finally get rid of my Autek QF1 when this
is implemented!
I really like this scenario from a control layout logic
standpoint. Great idea, Rich!
One thing, tho, in addition to the panel buttons, there has
to be a comm
On 10/27/2010 5:30 PM, The Smiths wrote:
> and when you put a cheap speaker on it it tends to accentuate the freq. that
> the radio was made to deliver... 100Hz through 4KHz (if that).
Nope. The problem with cheap speakers is NOT limited frequency response,
it is BUMPY frequency response, which
I must have missed something. I don't see any requirement for a sig gen in
the rf gain calibration procedure instead, I read it as being an automatic
procedure in the K3 utility that only requires a suitable load or
termination. Where is the procedure that involves a sig gen other than the
S-meter
I saw this thread begin and thought, "Good, some discussion of antenna
measurements."
http://www.nearfield.com/BOOKPAGE.HTM
How disappointing.
--- On Wed, 10/27/10, Kc9fat wrote:
From: Kc9fat
Subject: Re: [Elecraft] Nearfield monitors
To: "The Smiths"
Cc: "Elecraft Reflector"
Date: Wednesd
Robert,
Do you have the sideband set correctly? - both MMTTY and the K3? How
about the mark frequency? - they must match.
73,
Don W3FPR
On 10/27/2010 8:38 PM, Robert Seymour wrote:
> I changed out my old Dell for a newer and faster dell OPtiplex GX620. Now I
> can not get MMTTY to run. I
I changed out my old Dell for a newer and faster dell OPtiplex GX620. Now I
can not get MMTTY to run. I first started with the newer 1.68 version but then
went back to 1.65 which was running fine on the old machine. Still not go! The
Sound card in the GX620 is Analog Devices Sound Max.
I am ge
I'll just have to agree to disagree with you Don. The only amp that I'm using
is the K3 amplifier chip. I'm not talking about hooking my K3 to a stereo
system, or through a neve or SSL audio mixing board into a QSC amplifier here..
This is Ham Radio.. It's communications audio, and when you p
On 10/27/2010 4:15 PM, Don Wilhelm wrote:
> I beg to differ, Any radio will show its true audio traits if it is
> fed into a good wide-range speaker (or amplifiers and speakers).
YES! A few days ago, I listed several small loudspeakers that work well
with a K3. The marketing departments of the
Thanks for your experience! I have a studio in the house and you get
to thinking
I was mostly put off by the wiring and amp effort. Laziness being the
main factor.
I currently use the internal speaker or my Heil (hi Bob) Traveler cans.
On Oct 27, 2010, at 5:42 PM, The Smiths wrote:
> I
I beg to differ, Any radio will show its true audio traits if it is
fed into a good wide-range speaker (or amplifiers and speakers).
The best sound I get from my K3 is when I connect it to the input of my
shack/office sound system mixer which has a wide range amplifier and
good high fidelity
Hi
I am really enjoying using the P3.
I am always tweaking the Ref Lev, Span and so on to look at the band or zero
into a single signal. I am spending more time twiddling the P3 than the K3!
Ten was open over the weekend and the P3 showed the activity quickly. Fun to
watch DX working split.
Wel
The APF discussion is awesome, and I'm blown away that the K3 will be upgraded
with it, and it's going to be a great tool, and I don't mean to rain on the
parade, but my use of it will be limited to DXing and maybe occasional general
use, but probably *not* contest use.
Why? Too many controls
I know it's hard to please everyone in a situation like this but, as a blind
CW op, I'm fervently voting for APF not to be put on a menu. This is an
addition I eagerly anticipate and expect to use a lot. I know we blind ops
are a distinct minority here but, currently, we don't have access to t
I have some NS10 Yamaha's and some Tanoy monitors that I've used with my K3,
the NS10's drive a little better but are a bit flat for SSB, and a little to
crisp for CW. The Tanoy's are too muffly with everything.. I find that the
cheaper the speakers are the better they sound with HAM equipmen
Wondering if anyone is using near-field monitors with a K3.
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So long as the keying line is connected to the tip (not the ring),
sure... the ring wouldn't be connected to anything.
~Iain / N6ML
On Wed, Oct 27, 2010 at 8:49 PM, Barry wrote:
> Setting up K3 for CW keying from logging program. Can a stereo phone
> plug be used in the KEY jack? Already
Thanks for the updated manual, as always excellent from team Elecraft.
OT,,, I wonder how in heck those commercial broadcasters get such steep sides
on their transmitted signal. I have also observed local AM stations with brick
wall waveforms on my P3.
73
Dale, k9vuj
On 27, Oct 2010, at 16
Rich,
that was VERY well put. Even a dummy like me could understand that clearly. I
think as much as your idea of the Q being on the Width control is a good one, I
may actually rather put that Q setting in the Config menu. I don't see
adjusting the Q as often as I would the Frequency of t
In December issue of QST the FTDX5000 is tested.
István Szabó
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The easy solution (just as Werner said he did) is to change the plug
to a stereo plug and wire only the tip and the shell. Problem solved.
73,
Don W3FPR
On 10/27/2010 3:26 PM, Eugene Balinski wrote:
> All,
>
> Ok then, so the optimal solution then would be to
> build a stereo to mono ad
Beware of some of these stereo to mono adapters - either obtain a
clear picture of "which is connected to what" (also known as a
schematic), or check out the connections with your ohmmeter. I have
encountered some that were not what they appeared to be in the header
description of the adapte
I experienced a very similar problem this morning. ERR PL1 and PL2 starting
popping up. Then some other errors. It happened intermittently. I was
running 4.12 and then loaded the latest firmware. The errors have
continued. I have an email into Elecraft support and hope for a quick
solution.
>> In CW, I would suggest that the currently non functional LO-CUT-HI
>> function and settings be used to control APF, where SHIFT moves the
>> peak around in the passband, temporarily showing the frequency of the
>> peak, and WIDTH sets the depth of the falloff, temporarily showing the
>> depth o
There's a new version of the P3 Owner's manual that has just been posted
to the Elecraft web site:
http://www.elecraft.com/K2_Manual_Download_Page.htm
It includes a new three-page section starting on page 17, "How to Set Up
and Interpret the P3 Display", that serves as a short tutorial on some
of
On Oct 27, 2010, at 1:06 PM, Paul Christensen wrote:
> And the reason why some of us have been stating that roofing filters and
> brick-wall DSP filters, as good as they are for their intended purpose,
> cannot equate to the results obtained by the APF.
Indeed.
If you squint a little at the
Here is an operational scenario:
You are CQing in the CQ WW CW contest. There are other loud stations
CQing on either side of you. You have adjusted your SHIFT and WIDTH
controls to eliminate the adjacent-channel interference while still, you
hope, being wide enough to catch anyone calling you.
The Smiths:
Routing the sidetone through a filter resonant at the sidetone's pitch always
cleans up the waveform and improves articulation. The filter must not be so
narrow as to cause ringing however. The K3's sidetone is quiet clean but
external audio filtering indeed improves the quality of
>> Shorting the outputs of the audio channels together MAY not blow
>> anything up,
*May* is the operative word. If one has the sub RX on with audio
balance fully to one side and audio turned toward the maximum
driving relatively high impedance speakers, the amplifier *can*
be damaged. Since th
Setting up K3 for CW keying from logging program. Can a stereo phone
plug be used in the KEY jack? Already have cable wired this way from
previous radio.
Tnx,
Barry W2UP
--
Barry Kutner, W2UP Lakewood, CO
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Elecraft m
The radio shack adapter #274-375 does not short them. It separates the
1/8 Stereo
plug into two 1/8 mono jacks. Plugging into the channel of interest
should be fine.
The catalog states, "Use to separate left and right channel signals."
73,
Bob
K2TK
> On Wed, 27 Oct 2010 16:48:57 -
> "K
Paul,
The Yaesu hardware-based APF design resulted in essentially constant
bandwidth of about 30 Hz (6 dB points) and a peaking gain from 7.5 dB to
10 dB depending on its peaking frequency (200 Hz to 1 kHz).
The present K3 APF we're testing has a constant bandwidth of 30 Hz at
the 6 dB points
I'm wondering if the sidetone could be routed through the APF? Using a
simple audio filter makes the sidetone sound sharper and cleaner and somehow
improves my sending ability.
N4LQ
Steve
- Original Message -
From: "Wayne Burdick"
To: "Guy Olinger K2AV"
Cc: "Elecraft Reflector"
Sent:
> One explanation for why APF improves copy is that it is *not* a brick-
> wall filter: it has a narrow peak, but the skirts are very broad,
> leading to a more "natural" sound.
And the reason why some of us have been stating that roofing filters and
brick-wall DSP filters, as good as they are f
I do not believe you want to change the tone of the received CW signal. If the
SPOT button is used to turn on APF, the spot tone should be turned off for APF.
You should be able to tune across his signal at his frequency and "peak" his
signal. That is what APF is supposed to do. Please do no
Working on that
Wayne
On Oct 27, 2010, at 12:41 PM, Guy Olinger K2AV wrote:
> Goes without saying that a lot of us would love to have this for SS CW
> and especially CQWWDX CW, even if it's only a field test.
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Goes without saying that a lot of us would love to have this for SS CW
and especially CQWWDX CW, even if it's only a field test.
73, Guy.
On Wed, Oct 27, 2010 at 1:47 PM, Wayne Burdick wrote:
> We now have our basic APF function in place, and I'm amazed at how
> well it works. Lyle (KK7P, our DS
Shorting the outputs of the audio channels together MAY not blow
anything up, but it puts the output of one channel as the load of
another. Translate: distortion. Do NOT use the RS adapter. 73, Guy.
On Wed, Oct 27, 2010 at 3:22 PM, Joe Subich, W4TV wrote:
>
> > Incorrect. The adapter combines
All,
Ok then, so the optimal solution then would be to
build a stereo to mono adapter where one side of the stereo
audio and the ground would get wired to a mono jack (pick
your size)tip and ring for use by the mono speaker, and the
other audio channel from the stereo connector would be
conne
> Incorrect. The adapter combines both channels into one.
No, the Radio Shack adapter shorts the outputs of the audio
amplifier to each other with no "build out" resistor. That
can damage for the amplifier chip - the LM4950 is not spec'd
for parallel operation.
As Wayne has already stated, do
Right, but the low impedance output of one channel is loaded by the
low impedance output of the other channel. Not good.
>Incorrect. The adapter combines both channels into one. Nothing is
>shorted to ground.
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Cleaning out my radio shack. The following stuff for sale.
1. Heil PROLINE Gold mike with Heil stand. $100.00 obo + shipping.
2. Astron SS-30m 30 amp power supply, with meters. $90.00 obo + shipping.
3. Buddipole. With a long whip, in place of short and an isolator. The Deluxe
set
with bag. $225
Sure, suite yourself. I happened to see soldering job done by some radio
amateures, especially on a wires that are not really suitable for hand
soldering (like cheap headphones). For most of them, adapte r is the way to go,
just safer. If you plug it once and leave it be on back side of the r
Incorrect. The adapter combines both channels into one. Nothing is shorted to
ground.
- Original Message -
From: "Ken Kopp"
To: "k igor" , elecraft@mailman.qth.net
Sent: Wednesday, October 27, 2010 12:48:57 PM
Subject: Re: [Elecraft] K3 audio speaker jack
The RS adapter will me
I wrote:
> [the APF] has fewer of the artifacts that you get with a really
> narrow filter.
Instead of "really narrow" I should have said "higher-order," i.e. a
filter with the equivalent of many cascaded sections. The APF is a
very low-order filter in comparison to the K3's normal audio DS
We now have our basic APF function in place, and I'm amazed at how
well it works. Lyle (KK7P, our DSP guy) surprised even himself :) It
improves signal to noise ratio significantly, as evaluated both by
measurement (S+N/N increase of ~3 to 5 dB using the K3's built-in dBV
meter) and by ear
~
N2CQ QRP CONTEST CALENDAR
October 30/31 - November 2010
~
CQ WW DX Contest (SSB) ... QRP Category
Oct 30, z to Oct 31, 2359z
Rules: http://www.cqww.com/index.html
~~~
Yes, Ron, I also prefer wide bandpass for CW most of the time. Still,
it would be very nice indeed on those infrequent occasions to not have
to do the RIT/SHIFT mambo when using a narrow filter...
Actually, even with my typical wide open filter I think I'd use a
live-signal pitch control quite oft
thank you to all who responded,
I am using a stereo plug now and I left the ring unconnected.
A short test revealed no difference in loudness or sound when I shorted both
channels with only the MAIN RX, but a decrease in loudness when the SUB RX
is activated, which is not what I would like to see
The KSYN3 board has a new home. Thanks!
Allan K7GT
On Tue, Oct 26, 2010 at 9:33 PM, Allan Taylor wrote:
> I have an early KSYN3 board available to anyone interested. It
> deteriorated and finally had to be replaced. Any takers??
> from S/N 740.
>
> --
> 73 Allan K7GT
>
--
73 Allan
Joe,
Yes, I've been in touch with Lyle; he is trying to understand this issue and
resolve it, for which I am very grateful. Perhaps the solution will
illuminate why some observe this behavior and some do not.
Where else but Elecraft can one find such truly outstanding support?
-
73, Stan -
Please leave the ring unconnected. If you conenct them, then you will be
shorting the two audio channels of the K3 together.
73,
Lyle KK7P
> My question: when I exchange the speaker cable with a stereo plug, should
> I leave the ring unconnceted or is it better to connect left and right
> chann
After the K3 had been running for a few hours yesterday evening, just
listening to the bands, it stopped working with ERR PL1 (and PL2). These
were genuine hardware errors - neither of the two VFOs would tune and
both receivers were dead. Attempts to re-calibrate the VCOs ended with
ERR VCO an
Werner,
Just a guess, but most devices like that have a relatively high input
impedance - that means you should be able to connect both tip and ring
together, bridging both channels of the audio amp in the K3.
Check the specs on the speaker - if it states that the input impedance
is low, the
Dag nab it, Eric and all others concerned, in my not so mumbled opinion, the
first red bullet* of mailing list etiquette needs to be enforced as a rule,
not a suggestion.
Brgds,
Dave Windisch, N3HE
*It's one of two seen on a yellow background today on the reply page.
--
View this message in con
I have a BHI noise reduction speaker, this speaker has a cable with a mono
plug. (3.5mm, sleeve and tip) I have learned that this plug should not be
used with the K3.
My question: when I exchange the speaker cable with a stereo plug, should
I leave the ring unconnceted or is it better to connect
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