Please forgive this off topic post--I need to raise money for a KPA500 and
KAT500!
For Sale:
1) AMERITRON AL-1200 Amplifier. One owner (me). Pre-MFJ. In like new
condition. Seldom used, always babied (run at 1000w out when used). Capable
of
running GAS -- once tested at 2400W out on
Nice write-up on tips for using the APF function, Wayne.
Would you please consider adding this to the K3 Operating Tips page on the
Elecraft website? (and the manual, as I am sure this will be a recurring
area of inquiry...)
73,
Bruce, N1RX
Hy to all, just a confirm before selling an unused option. I bought in 2010
october a KIO2 to add to my K2/10. On the way i decided to switch directly
to K2/100 with KPA100 mounted inside the K2 and will order the kit today. I
just
want only a confirm that i don't need anymore the KIO2 to be
Very nice summary Wayne! I'd add a couple of comments:
1. I find an even wider WIDTH works better for me (400-450 Hz using a 500
Hz 8-pole). If I set WIDTH too narrow (e.g. 50-100 Hz) I get too much
ambient ringing.
2. Tuning is indeed very critical. This is why I only use APF for
Hello all,
Did some measurements on the different frimware versions. This time not
a BW-plot but I measured S+N/N ratio's.
I have no lab equipment but I have a K3 with dBV measurements, XG2 and
the stepped attenuator from elecraft.
I measured the difference of the K3 dBV-reading in signal
Good advice from N1EU and K2AV here, folks!
Also, see Wayne's posting: Tips for using APF.
I'm a junkie for trying out new firmware, and I can attest that the APF
is as good
as it ever was-- in fact you need the latest version of it to be sure
you have the
5 Hz resolution in the APF shift
Bruce,
I already plan to post this there this weekend. Thanks!
73
Greg
AB7R
On Thu, Jan 27, 2011 at 1:42 AM, Bruce Beford
bruce.bef...@myfairpoint.netwrote:
Nice write-up on tips for using the APF function, Wayne.
Would you please consider adding this to the K3 Operating Tips page on the
I brought my K3/100/P3 to our winter place this year instead of the old
IC-735. The K3 (with MH2 I use with the K2) also came along for
convenience. The problem is I'm getting hum on my signal.Unless I
maintain my finger on the mic socket (gnd).Any finger works! I've
tried: Buying a
In some time past, someone developed a mod for the K2 AGC which
allowed all parameters for the threshold and S-meter response to be varied.
The mod used 3 trimpots installed on the Control Board.
I need the documentation for this mod if possible. I thought I had most
all the K2 documentation
~
N2CQ QRP CALENDAR
JANUARY 27 - FEBRUARY 25, 2011
(With Corrections)
~
40 METER FOXHUNT (CW) *** QRP Contest ***
EST: Jan 27, 9 PM to 10:29 PM
UTC: Jan 28, 0200z to 0329z
I'm looking at purchasing the KXV3A so I can install the MFJ-1026 noise
canceling unit between the RX ANT OUT and IN connectors. When this receive
path is selected, does the relay on the KXV3A activate and de-activate when
keying the transmitter? I wouldn't think so, but I'd like to find out.
I'm looking at purchasing the KXV3A so I can install the MFJ-1026 noise
canceling unit between the RX ANT OUT and IN connectors. When this receive
path is selected, does the relay on the KXV3A activate and de-activate when
keying the transmitter? I wouldn't think so, but I'd like to find out.
Boy that was quick.My Line In setting was too high. New Alinco
Switcher is nice thovery quiet. :-[
Jay, W6JDB
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Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help:
The information is now in my hands, thanks to Gary KI4GGX.
73,
Don W3FPR
On 1/27/2011 9:59 AM, Don Wilhelm wrote:
In some time past, someone developed a mod for the K2 AGC which
allowed all parameters for the threshold and S-meter response to be varied.
The mod used 3 trimpots installed
K3 Slow power change
I've been using WSPR for the past week with my 100 Watt K3 at QRP (5W) and QRPp
(100mw to 500mw) power levels. I noticed that if I move the K3 'PWR' power
level control either up or down one increment (i.e from 5W to 4W or from 0.5 to
0.6W) the power drops way down and
Pippo,
Your assumption is correct - all the function of the KIO2 is present in
the KPA100.
The only reason one would want to have both the KIO2 and the KPA100 is
for those who want to mount the KPA100 remotely in an EC2 enclosure.
73,
Don W3FPR
On 1/27/2011 6:07 AM, Giuseppe Sorrentino
Yes, if you don't have sufficient audio drive. Long-press DISP so that the
ALC scale is visible then adjust the input level for a steady 4 - 5 bars
reading. (This assumes you are using the DATA mode not USB.)
Rich - K1HTV wrote:
K3 Slow power change
Making a small incremental change in
No, QSK is the same when rx ant is selected.
This is a great way to use the noise canceler without having to use the crummy,
slow t/r
relay built into it.
On 1/27/2011 7:17 AM, WB8ENE wrote:
I'm looking at purchasing the KXV3A so I can install the MFJ-1026 noise
canceling unit between the
As well as a vertical line marker to indicate the tuned frequency in
fixed tuning mode, I would like to see a better implementation of the
passband indicator. Being in the noise as it tends to be, it's
continuously overwritten by the signal trace, making it hard to see.
PowerSDR software
Excellent idea on the different colored background Dirk- I believe (from
memory) the SDR-IQ does this the same way.
Dale W4OP
- Original Message -
From: Dirk Jorens n6...@charter.net
To: elecraft@mailman.qth.net
Sent: Thursday, January 27, 2011 11:52 AM
Subject: Re: [Elecraft] P3 fixed
On Jan 27, 2011, at 1/277:46 AM, Rich - K1HTV wrote:
Here is how long it takes the power, as read on the K3 and on a W2
watt meter, to recover after the PWR control is changed slightly...
Is this normal?
No, it is not normal. It is not hard to make it go away, however.
The power
I'm finding it quite useful to switch between peak hold mode and
averaging mode, but the gain setting for the two modes differ by at
least 10 dB. The gain setting also varies widely from one antenna to
another, and from one band to another.
I'd like a function that allows me to store a gain
Or if he wants to routinely re-install the QRP cover for portable
operation
73, Ross N4RP
On 1/27/2011 10:58 AM, Don Wilhelm wrote:
The only reason one would want to have both the KIO2 and the KPA100 is
for those who want to mount the KPA100 remotely in an EC2 enclosure.
73,
Don W3FPR
It isn't really a gain issue -- it's an issue between peak signal levels and
average levels.
Depending on signals, noise and band conditions, that delta could also be quite
variable.
Grant/NQ5T
On Jan 27, 2011, at 11:27 AM, Jim Brown wrote:
I'm finding it quite useful to switch between peak
All,
where I mentioned Dual PB, I mean ofcourse the APF, because that the
discussion here.
Sorry If that is not clear.
73
Arie PA3A
Op 27-1-2011 12:44, Arie Kleingeld PA3A schreef:
Hello all,
Did some measurements on the different frimware versions. This time not
a BW-plot but I measured
Arie Kleingeld PA3A-2 wrote:
I have no lab equipment but I have a K3 with dBV measurements, XG2 and
the stepped attenuator from elecraft.
Arie I believe you may have some measurement error. I'm sure you know that
noise can only be measured correctly with a True RMS responding
And added to the IPhone K3 App please!!!
Ken..G0ORH
Sent from my iPhone
On 27 Jan 2011, at 09:42, Bruce Beford bruce.bef...@myfairpoint.net wrote:
Nice write-up on tips for using the APF function, Wayne.
Would you please consider adding this to the K3 Operating Tips page on the
Page 36 of the K3 owner's manual:
AFV shows the true RMS value of receiver AF output (mVp-p), unaffected by AF
GAIN control.
73,
Scott K9MA
On Jan 27, 2011, at 1:17 PM, Bill W4ZV wrote:
I'm sure you know that
noise can only be measured correctly with a True RMS responding
Absolutely! It will be in the next update, version 1.2
73,
Mike ks7d
On Jan 27, 2011, at 2:31 PM, Ken Chandler wrote:
And added to the IPhone K3 App please!!!
Ken..G0ORH
Sent from my iPhone
On 27 Jan 2011, at 09:42, Bruce Beford bruce.bef...@myfairpoint.net wrote:
Nice
FW pre-beta 4.16 release was actually the first to have APF, not 4.17.
Here's an interesting comment made shortly APF was finally released to the
public.
http://elecraft.365791.n2.nabble.com/K3-APF-td5735159.html#a5736718
Steve
N4LQ
- Original Message -
From: Arie Kleingeld PA3A
Gary,
Thank you for the reply. I've downloaded the assembly manual and will look
it over.
So far I've received 23 responses to my initial message. Lots of good
information. The reflector makes it easy go get help when needed.
The initial order will be for a K3 and KAT3, then add the
I'll check the APF in 4.16 after work and see if it's any different.
Barry N1EU
On Thu, Jan 27, 2011 at 7:58 PM, Steve Ellington [via Elecraft]
ml-node+5967599-613958550-2...@n2.nabble.comml-node%2b5967599-613958550-2...@n2.nabble.com
wrote:
FW pre-beta 4.16 release was actually the first to
Scott Ellington wrote:
Page 36 of the K3 owner's manual:
AFV shows the true RMS value of receiver AF output (mVp-p), unaffected by
AF GAIN control.
While that may be true for sinusoidal signals I doubt it holds for noise
measurements. Accurate noise measurements require a true
Thanks to everyone who responded. I've gone with the Inrad 8-pole 500hz
filter for now. Expected arrival date for my K3 is next Weds.
73, Ross N4RP
On 1/25/2011 9:27 AM, Ross Primrose wrote:
Any thoughts on the merits of one vs the other? The 5-pole filter is
cheaper, but they need to me
Ken, that iPhone app is nice isn't it?
73 de KE4WY Jim
Sent from my Starship
On Jan 27, 2011, at 2:31 PM, Ken Chandler g0...@sky.com wrote:
And added to the IPhone K3 App please!!!
Ken..G0ORH
Sent from my iPhone
On 27 Jan 2011, at 09:42, Bruce Beford
Thanks Gary,
Sounds like several good reasons to add the KXV3A to the initial build. I'll
add it to the list.
73, Dwayne, KE5EFY
From: Gary Hvizdak [mailto:garyhviz...@cfl.rr.com]
Sent: Thursday, January 27, 2011 2:27 PM
To: 'Dwayne Rohmer'
Subject: RE: [Elecraft] K3 build sequence
My Inrad 500 Hz filter seems to be centered perfectly. The 250 Hz 8
pole Elecraft badged 8 pole filter seems slightly off center but
probably not enough to bother diversity but since I don't have the
second receiver, I can't say for sure.
I've used the 500 Hz filter for 500 Hz Olivia
Yes it is, an excellent App indeed.
I have all 3 Elecraft manual Apps, wouldn't be without then.
I can actually take my k3 to field day, without the worry of my mates nicking
my manuals for further study in the privy!!
Ken..G0ORH
Sent from my iPhone
On 27 Jan 2011, at 20:35, Jim
Bill,
Thanks for your added comments.
As I said, I do not have the lab equipment to do this. But there are
people in this group that have and can measure far better than I.
The APF (for me) is not about selectivity. I use it when digging into
the noise and get a better copy of weak signals.
Hi,
Doing true RMS over the selected passband is very easy to do with DSP and I
have no reason to doubt that the K3 dBV meter is a very close approximation
to true RMS even on signals that are far from sinusoidal (such as noise).
Analog is a different story and I agree that there are many false
Within the band-limited audio passband of the K3, the RMS metering is
very accurate. The algorithm is:
1) measure and square each reading
2) sum with the previous readings (accumulate)
3) do this for 500 ms or 1 sec
4) divide the sum by the number of samples taken
5) compute the square root
6)
Fellow Elecraft K3 Owners, Wantabees, and Others.
Last year I went to Dayton where I ordered the XRX3 second receiver and some 8
pole filters so I could try diversity receive. Just around the corner or so
from them was a new vender I had never heard of called Pixel Technologies and I
spent
4.16 APF has the same response curve as all the other versions.
BArry N1EU
On Thu, Jan 27, 2011 at 8:16 PM, Barry N1EU barry.n...@gmail.com wrote:
I'll check the APF in 4.16 after work and see if it's any different.
Barry N1EU
On Thu, Jan 27, 2011 at 7:58 PM, Steve Ellington [via
For Sale: K2/10, SN 26XX. Radio is up to date on firmware and upgrades
other than a few pieces of the basic K2 A to B mods. The options installed
are the K160RX, KNB2, KSB2, KDSP2 and KAT2. Complete alignment and
calibration just completed by Don Wilhelm W3FPR..documentation can be
provided
Barry N1EU wrote:
4.16 APF has the same response curve as all the other versions.
Q.E.D. If it has an identical response curve it has identical S/N
performance. Anything else is either differences in noise conditions or
human imagination.
73, Bill
--
View this message in context:
But Bill,
I had a sage manager many years ago who often stated Perception is 99%
of reality. Being of a scientific mind, I had my doubts at the time
thinking people will be convinced by the facts of science.
In later years, I have mellowed and now agree with that manager.
Perception IS 99%
Is anybody running WINMOR with a K2 and SignaLink? If so what are your
transmitter settings in WINMOR and how are you keying the K2? If I try
using my com port for PTT it does key, but it also steps the radio to the
mext mode, which is problematic. Any insight would be appreciated.
73
Don Wilhelm-4 wrote:
I had a sage manager many years ago who often stated Perception is 99%
of reality. Being of a scientific mind, I had my doubts at the time
thinking people will be convinced by the facts of science.
In later years, I have mellowed and now agree with that manager.
Bill,
I am not suggesting Elecraft do anything other than the explanations
that have already transpired.
Yet even with such dialog and tests that say Q. E. D., there will be
many who remain unconvinced, and will want to stick with the old version
because it is better. They will not be
Chuck,
That sounds like WINMOR is issuing mode commands along with the TX
command that are not compatible with the K2 Programmers Reference.
I would suggest you take that up with the WINMOR author. If he states
that WINMOR implements K2 support, that should be brought to his
attention. If
10 Minute Timer - Sound, 'Beep, Beep, Beep.' Alternate, Flash or Dim
Display and/or Panel Lights. Reset Timer. Countdown on clock display.
73,
Dick - KA5KKT
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Elecraft mailing list
Home:
Why would you want this?
On Thu, 2011-01-27 at 21:30 -0500, Edward Dickinson, III wrote:
10 Minute Timer - Sound, 'Beep, Beep, Beep.' Alternate, Flash or Dim
Display and/or Panel Lights. Reset Timer. Countdown on clock display.
73,
--
73
Brendan EI6IZ
-Original Message-
From: Edward Dickinson, III [mailto:edd...@windstream.net]
Sent: Thursday, January 27, 2011 9:50 PM
To: 'elecraft@mailman.qth.net'
Subject: Re: [Elecraft] K3 Feature Request
...as a reminder for requisite station identification.
73,
Dick - KA5KKT
Hi all,
Used the P3 for the first time last weekend during the BARTG RTTY contest.
I did notice that all signal levels shown by the P3 were very low, for instance
with a noise level of around s3 on the K3 and a RTTY signal in the clear at
S5-6 there was no trace on the P3 on either the
I just updated the radio this evening, tried out the APF feature -- it seems to
really ROCK! I recorded HR2DMR with and without the APF... here's the file.
https://bmoran.onehub.com/n9adg/pages/home/content_items/show/b343e3684ee387647b9f8cedf6d70b3f9c2aa8ab/HR2DMR_APF_COMP.mp3
*(shorter link:
You're kidding, right?
On 1/27/2011 7:30 PM, Edward Dickinson, III wrote:
10 Minute Timer - Sound, 'Beep, Beep, Beep.' Alternate, Flash or Dim
Display and/or Panel Lights. Reset Timer. Countdown on clock display.
73,
Dick - KA5KKT
I sure hope so!
Gary
On Fri, Jan 28, 2011 at 5:34 PM, David Gilbert xda...@cis-broadband.com wrote:
You're kidding, right?
On 1/27/2011 7:30 PM, Edward Dickinson, III wrote:
10 Minute Timer - Sound, 'Beep, Beep, Beep.' Alternate, Flash or Dim
Display and/or Panel Lights. Reset Timer.
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