I believe a LONG time ago before I even had a radio I made a suggestion
of a quick split that Wayne mentioned he was contemplating adding to the
radio. I don't really remember how I'd structured it but I was hoping
for a way where I could simply assume that the MHZ portion would remain
the same
I see that as a great idea that fits relatively well with the theme of
the UI!
On Sun, 2009-02-22 at 15:17 -0500, Ed K1EP wrote:
I don't think this has been mentioned before, I did a quick search of
the list.
Here is my firmware request :)
In order to adjust the AFX properties, you have
I have downloaded the latest firmware and also get the frequency jump quirks
when the VFO's are linked.
There is also a further quirk on AM with the 6kHz filter installed. If I
press XFIL the sub display shows 6kHz. However if I move the Width control
slightly to the left, the readout jumps to
I would assume that when installing this board that its best that we cut
the two traces on the main board so that the negative ALC mod isn't half
way done right? I've got the board in hand now just need to find the
time to tear the shack apart again and start up on mods again. I've
done them all
Mike I believe there are two separate parts to your post:
At 50Hz width it was quite clear that many stations call off frequency.
Using RIT, I could see that it was typical for them to be 70Hz or more away
from the DX station but I could not hear them in my 50Hz passband. The real
problem
Ed K1EP wrote:
In order to adjust the AFX properties, you have to go into the
menu. It isn't that easy in the heat of the battle.
You can assign the AFX setting to one of the PF keys. I doubt Wayne is
going to want to start making keys work different ways for different modes.
73,
Hi Wayne and all:
My filters are 200, 400, 1.0, 1.8 and 2.7 and they are all CW enabled. I
was using headphones and my sub RX was off. My serial number is 2208 and the
radio was factory assembled (including the sub RX).
I did not hear key clicks when this was happening. The off frequency
There was some big DX contest this weekend. I played in it for about 30
minutes with my K3 and my bugs. Fun. By the end of my time on the air,
my small want for a 200 Hz filter had been upgraded to the next thing
I buy.
You too?
- Keith N1AS -
- K3 711 -
K2MK wrote:
I thought it was interesting that recovery was noticeably slow on the DX
station's frequency when this was happening. However, under normal
conditions when US stations were calling directly on top of the DX
station,
recovery was fast. Hence the ability to copy the DX
I had to try it.
Both VFO's set at 6.000.000 and LINKED.
Turned VFO A slightly lower to 5.999.999. VFO B followed exactly. Could also
turn VFO higher in frequency and VFO B still tracked okay.
If I went down farther and tuned very slowly both VFO's tracked.
If I went below 6.000.00 and tuned
I would assume that when installing this board that its best that we cut
the two traces on the main board...
Yes.
73,
Lyle KK7P
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help:
Last week I sold my 500 Hz filter, and ordered a 250 from
Elecraft. On Friday night, the new filter hadn't arrived
yet, so I operated in the CW DX Contest with only the 2.7K
filter. It worked great! I couldn't see any difference
between the 2.7K and the old 500. The skirts of the DSP (set
at
I echo Dave's remarks, though I have the 8-pole 400Hz filter.
Being in VT made me the focus of several spot pileups, but I
experienced none of the desense issues that someone reported on the
reflector. There were numerous wide stations, which caused me to
tailor the RX EQ settings in an effort to
Interesting. I had the opposite experience.
I was on 40 meters yesterday afternoon for about 30 minutes. Signals
were all pretty strong as Europe is just across the pond from my QTH. I
did a lot of listening, comparing 1.1 KHz with 1.0 KHz and 550 Hz with
500 Hz. The difference of course, is
Hello,
Can somebody explain to me why the audio noise
increase when i select a lower BW XTAL filter?
For example going from 1k8 to 400Hz.
As i use often BPSK31, the blue background
of my waterfall (without signal present) go
into the yellow color; (using Digipan with
standard waterfall colors).
Hi Bill:
Here are my CONFIG settings related to the AGC. The only ones I played with
during the contest were SLP and THR. I always use AGC-F but did occasionally
try AGC-S.
AGC-HOLD 000
AGC-PLS NOR
AGC-SLP 010
AGC-THR 005
AGC-F 120
AGC-S 020
The differing conditions I described
hb9ari wrote:
Is it a Filter gain setting to modify in my K3?
Yes, there is an FLx GN setting in the menu. Normally you need to increase
it a dB or two for the narrow filters to compensate for the extra insertion
loss.
-
Julian, G4ILO. K2 #392 K3 #222.
http://www.g4ilo.com/ G4ILO's
- Original Message -
From: Darwin, Keith keith.dar...@goodrich.com
To: Elecraft Discussion List elecraft@mailman.qth.net
Sent: Monday, February 23, 2009 3:25 PM
Subject: Re: [Elecraft] So, anyone going to get more CW
filtering?
Interesting. I had the opposite experience.
I was on
Aha. It sounds like the desense problem arises when the DSP filter
is narrower than the roofing filter. A strong station within the
roofing passband but outside the DSP passband will shut down the
receiver through AGC.
I think we all misled ourselves by the impression that desense was
Ah, yes, Dave, that would make a difference. Enough of a difference
that you and I are *almost* running different rigs :-)
With AGC off, and AF gain up, I assume you ride the RF gain in response
to RX signal strength. Cut RF gain for a strong one and boost it a bit
for a weak signal, right?
If
Having 1/4 to 1/2 second recovery time does not sound like AGC-F. By
chance, did you have the CW text decode feature engaged? Did you have
NR engaged?
- Keith N1AS -
- K3 711 -
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf
This keyboard works GREAT for such things..and has additional keys you can
program.
www.bella-usa.com
-
73,
Greg - AB7R
Whidbey Island WA
NA-065
On Mon Feb 23 8:38 , Julian, G4ILO sent:
Brian Machesney wrote:
The only item on my wish list is an outboard
Peter Wollan-2 wrote:
Aha. It sounds like the desense problem arises when the DSP filter
is narrower than the roofing filter. A strong station within the
roofing passband but outside the DSP passband will shut down the
receiver through AGC.
I think we all misled ourselves by the
Hi Mike,
On Mon, Feb 23, 2009 at 11:00 AM, K2MK k...@comcast.net wrote:
Here are my CONFIG settings related to the AGC. The only ones I played with
during the contest were SLP and THR. I always use AGC-F but did occasionally
try AGC-S.
AGC-HOLD 000
AGC-PLS NOR
AGC-SLP 010
AGC-THR
I also ran across a stand alone shuttle jog device from
www.contourdesign.com . I will check out that keyboard. It looks pretty
handy!
A slip of the foot you may soon recover, but a slip of the tongue you may
never get over. Ben Franklin
-Original Message-
From:
I believe the hardware AGC would be activated if the *combined* strength of
all signals within the crystal filter passband gets above the threshold of
S9+25 dB or so. This means that multiple unwanted signals don't have to
reach the threshold strength *individually* for AGC pumping to occur,
I also ran across a stand alone shuttle jog device from
www.contourdesign.com...
And then of course there're the just-discontinued Logitech NuLOOQ device
and the 3DConnexion SpaceNavigator Personal Edition...
73,
Lyle KK7P (who has the NuLOOQ, Contour Designs widget, and the PowerMate
- and
Hi Bill:
You stated it correctly. Here's an example.
There are two US stations calling the DX. Me and you both within my 50Hz
passband. I send my call once and you send your call twice. You are S9 at my
receiver and the DX is S7. When I finish calling I can hear you and I can
also hear the DX
The problem with any of the shuttle knobs or keyboards with
integral shuttle control is the need for software support.
Most of these devices operate by emulating a mouse wheel (the
scroll wheel) and it is not easy to use the external knob
to tune while reading e-mail or surfing the web.
Is my summary of the issue correct?
If both signals are within both the DSP and roofing filter bandwidths, then
the receiver recovers instantly after each character.
If the stronger signal is outside the DSP filter window (and you can’t hear
him) but inside the roofing filter window, then
Joe Subich, W4TV-4 wrote:
The problem with any of the shuttle knobs or keyboards with
integral shuttle control is the need for software support.
Most of these devices operate by emulating a mouse wheel (the
scroll wheel) and it is not easy to use the external knob
to tune while
It seems that this thread is VERY confused about how AGC works to
control the RF gain. I also suspect that some are using the radio
with too much RF gain. The settings that W4ZV posted are pretty
much what I use, except that I regularly also run the RF gains
(both main and sub) at about 2
Is this correct?
If a cw signal falls within the DSP passband it should and will pump the
AGC. If a CW signal falls outside the DSP passband it should not pump the
DSP's AGC. The problem here is defining what the DSP's passband it. If a
signal is just outside the audio range of the DSP (can't
From what I though the original post was about the trouble copying signals
in a pile up, it appears to me that thread has become at least 3 different
topics.
Seems there are people talking desense, AGC settings, and the pile up
problem.
To make mine clear, I do not have any desense
I'm at work and don't have time to check any of this ... But I was under
the impression that it was not this way. Signals outside of the DSP
passband but inside the roofing filter passband would activate the DSP.
So, with a 2 KHz roofing filter and a 200 Hz DSP, you'd have very few
signals being
Turns out I'm pretty much a bottom feeder and I am using the rig with
150Hz and narrower filtering on CW 99% of the time except when on a
voice mode. I'm not using the 1Khz 8 pole filters so they're excess
to my needs.
$230 for the two, or $118 for one. shipping is included
I bought these in
Hi John:
You are correct. When there was no strong off center signal but two or more
strong signals within the 50Hz passband it was possible to copy one signal,
as we all do, in the presence of QRM. There was no noticeable AGC action. It
was just a normal situation of trying to copy one signal
There are two separate AGC functions:
1. Hardware AGC is activated when the combined signals that get through the
roofing filter reach a certain level, about S9+25.
When it is activated, all those signals, including the wanted signal, are
attenuated before the DSP.
AFAIK the hardware AGC cannot
Hello Dave,
I must have been sleeping ...
I use FSK-D now and all works fine.
I just use it for hunting DX-peds. Just wkd K5D on 18Mc RTTY using the
internal CW to RTTY decoder.
Thanks for waking me up.
73's, Evert PA2KW
_
From: David Yarnes [mailto:w7...@cox.net]
This is an interesting subject.
I've read several opinions on how the K3-AGC works here and MORE
important: how it behaves.
Can somebody from Elecraft shine a light on the AGC behaviour? I'm very
curious now.
73,
Arie PA3A
__
Hello, I'm having trouble getting N1MM MMTTY to work on my K3. I can copy
text ok I can key the transmitter and get output but I can't get it to
DIDDLE with the software. When I use the paddles it Diddles all ok but not
WIth the computer. Can someone give me some insight as to what is wrong.
Mel,
What DATA mode are you using? If you are generating the tones from
MMTTY with the soundcard, you must use DATA A or AFSK A.
If you can use the paddles to RTTY, then your DATA mode is set to FSK D.
Think of the A data modes as Audio sourced, and think of the D modes
as Direct or Data
New Years 2009 may have come and gone but its never too late to resolve to help
preserve and encourage CW activity across our amateur bands. To celebrate the
new year, come and join the NAQCC (North American QRP CW Club), a club for any
and ALL CW enthusiasts around the world.
Our members
NAQCC wrote:
New Years 2009 may have come and gone but its never too late to
resolve to help preserve and encourage CW activity across our amateur
bands. To celebrate the new year, come and join the NAQCC (North
American QRP CW Club), a club for any and ALL CW enthusiasts around
the
Ditto!
wayne burdick wrote:
NAQCC wrote:
New Years 2009 may have come and gone but its never too late to
resolve to help preserve and encourage CW activity across our amateur
bands. To celebrate the new year, come and join the NAQCC (North
American QRP CW Club), a club for any and ALL
This is what I was seeing too. I never had any issues with wide or clicky
stations causing any issues. The radio is great to use. The K3 produced
the least amount of listening fatigue that I have experienced. A good
thing!
Not being able to pull out callsigns out of a big pile is not a good
Do you have the two transistor interface (FSK and PTT)
connected between the MMTTY serial port and the KC ACC
port for FSK input? If you are doing FSK, you will need
some way of getting the FSK from the computer serial
port to the FSK (and PTT) input of the K3.
-Original
OK...so we (several of you) have identified a similar situation of
mushiness.
Just out of curiosity, did anyone have a 2nd receiver (non-K3) handy
to see if IT could copy the signals cleanly?
Also...
IMO, copying a slight tone shift (ala W4ZV link, which is VFB) is a
lot different than trying to
Received my K3 today. I'm a chicken; I ordered it factory built. It is pretty
much everything I expected. After getting everything connected, I realize I
have hours figuring out how to use the radio. I'm really looking forward to it.
Thanks to the crew at Elecraft. They did their usual
Congrats!
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Brassell
Sent: Monday, February 23, 2009 4:47 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3 #2738
Received my K3 today. I'm a chicken; I ordered it
On Mon, 23 Feb 2009 14:24:16 -0800
wayne burdick n...@elecraft.com wrote:
NAQCC wrote:
New Years 2009 may have come and gone but its never too late to
resolve to help preserve and encourage CW activity across our amateur
bands. To celebrate the new year, come and join the NAQCC (North
Yes as matter of fact I do have a second radio sitting alongside the K3
and I
split the antenna to both receivers for receive, so its a apple to apple
comparison, the second radio had no problems at all in the pile up, was
not going to mention I used the second radio to work the pileup and
then
On Feb 23, 2009, at 4:25 PM, JIM DAVIS wrote:
YO! Wayne!
Is it OK if us guys who know that life is too short for QRP can join
or is it something that is
Clique-oriented?
Jim,
NAQCC is open to anyone, including those who haven't had the pleasure
of making QSOs with the minimum power
The missing L3 has arrived and after installing it I now have transmit
output when the subrx is activated
Dave
ww2r
-Original Message-
From: ww...@g4fre.com [mailto:ww...@g4fre.com]
Sent: Tuesday, February 17, 2009 12:15 PM
To: elecraft@mailman.qth.net
Subject: RE: [Elecraft] K3:
Jim,
I also ordered my K3 # 2536 factory built. Had I not, I still wouldn't
be on the air and enjoying my K3! Nothing chicken or shameful just able
to savor the Flavor without the cookin :)
Best of luck with it.
Sid K3SX
Jim Brassell wrote:
Received my K3 today. I'm a chicken; I ordered it
Thanks in advance for any advice...
Symptom:
Without filter board installed, unit powers up and passes LED tests. Absolutely
nothing appears at any time on the LCD display. I thought I might be having a
display problem until for giggles and grins, I popped in the filter board and
powered up.
Please forgive, I need to share... it seems that I have received a certificate,
and it is pretty speacial to me. So, please bear with me on this.
The certificate in hand... is the very nicely done, attractive and explicit
paper, decribing my efforts in the CQ WW 160 DX Contest.
It is
And I used my K2 - qrp, with a pair of dipoles, and a vertical.
The Elecraft K2 is amazing when put to work on things like lowband
with an electric fence under the antenna.
Thank you,
--... ...--
Dale - WC7S in Wy
Please forgive, I need to share...
Many of the buttons do different stuff based on what mode you're in.
I'd not put something like this past him in the least.
On Mon, Feb 23, 2009 at 2:35 AM, Bill W4ZV btipp...@alum.mit.edu wrote:
Ed K1EP wrote:
In order to adjust the AFX properties, you have to go into the
menu. It isn't
When I first received my K3, I too was disappointed with the BDR until I
understood what was happening.
In an effort to quantify the BDR of signals between the xtal filter bandpass
and the DSP bandpass, I set up the following scenario...
Two generators feeding the K3 through a hybrid combiner.
Brett Howard wrote:
Many of the buttons do different stuff based on what mode you're in.
I'd not put something like this past him in the least.
Brett,
I'm cautiously flexible (and hopefully, consistent) with the controls.
But I would never engage in a breech of UI etiquette as flagrant as
Dear group,
Regarding this issue I had described in a previous email, I wrote:
The zipper or motorboat noise occurs when tuning around 4.9-5.5 MHz or
4900-5500 KHz. It is most noticeable when the sub receiver is turned on,
the sub volume is up, and tuning steps are set to fine. The
Tim,
Thank you for info; i will look for
the current filter gain values and adjust
them if necessary.
73 QRO de Rudolf, HB9ARI
Tim Heasman wrote:
Hi Rudolf,
Just checked the gains on my 1 kHz and 400 Hz filters they are 3 and 8
dB. I also checked the audio noise using the dBV display and
On Mon, 2009-02-23 at 18:40, N8LP wrote:
...
I think the days of receivers with xtal filters are numbered. High speed
ADCs capable of 140dB dynamic range without xtal filtering are on the
horizon. A 20-bit ADC with enough processing gain would do it.
I don't think you'll find a 20-bit ADC
Thanks Larry,
These measurements explain a lot of what's happening.
73,
Arie PA3A
-Oorspronkelijk bericht-
Van: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] Namens N8LP
Verzonden: dinsdag 24 februari 2009 3:41
Aan: elecraft@mailman.qth.net
Onderwerp: Re:
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