I have the TCXO3-1 (49.380.000) but never bothered to calibrate
it. So out of curiosity, I measured my freq. on the K3 in the tune
mode on 20m and 6m:
Measured on a EIP-538 microwave counter, agrees <1-Hz accuracy with
my rubidium on 10-MHz:
14.205.000 read 14.204.994 (-6Hz)
50.110.000 read 50.
Nope, they bite everyone. Eventually.
73,
matt W6NIA
On Sun, 05 Dec 2010 15:55:43 +1000, you wrote:
>Hmmm,
>
>Well it appears the BALANCED LINE feeder had developed an impedance bump
>somehow. Rerouting the feed line appears to have corrected the issue and now
>appears that the K3 likes it aga
Hmmm,
Well it appears the BALANCED LINE feeder had developed an impedance bump
somehow. Rerouting the feed line appears to have corrected the issue and now
appears that the K3 likes it again.
Gee, sometimes these little weird things bite us. (well maybe just me...:-)
? )
Anyhoo, will see what ha
G'Day all.
Just now, using a double extended zepp I find it tunes all bands except 20M
consistently but for a couple of weeks it has been fine.
The KAT3 will tune to 1.1:1 BUT the swr meter fluctuates to 3:1 but does*not
* generate HI SWR on the display.
All other bands this behavior does not oc
Good Evening,
I got a report from a friend who lives closer to the Columbia River
Gorge that the winds are howling. Here, further down river, I am feeling
no wind. Living around all of these mountains means there are a variety
of microclimates which drive the weather predictors crazy :
Wow--I received a plethora of responses, all pretty much saying what Don's
said here - external 13.8 power supply will yield just about 4 watts.
Internal batteries, which are only going to run around 9v (6 x 1.5 = 9) will
only crank out around 2 watts.
Many thanks for the help. I'm dutifully savin
Well after only two days [!] of playing it goes like this in my book.K3
then TS 590 then the Eagle, BUT, as the famous expression goes, I would hate to
live on the difference. Because of the simplicity of operation, the Eagle is a
fun radio and would make some mobile rig. I am afraid that
I have used the K2 with the PTC-IIusb with no problem. As I remember
it, Airmail talks to the PTC on one com Port and to the K2 on another. I
haven't had this particular configuration set up for several years but
if necessary I could probably re-create it.
I did modify the K2 to give the PTC
What ever happened to the idea of the variable bandwidth filters? Is that a
dead
subject? 73 de Greg-N4CC
Msg sent via CableONE.net MyMail - http://www.cableone.net
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Airmail DOES speak K3 CAT commands
I am not sure about the PTC modems ability to support the K3 directly
since my PTC2e does not support rig control directly.
if this is important to you then prehaps it would be worthwhile asking
SCS to add K3 support, this should be easy for them to do as it's
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Hi,
grounding of L33 doesn't bring the expected signal (7.xMHz). D37 seems to be
mounted the right way (round caps in direction to front panel).
If I put a resistor parallel to R116(it should be the right one:
grn-brw-grn-(gold)), i get the 4.9MHz oscillation, but still no signal at
TP2 (in this
Benny,
Actually you should have a better signal at U11 pin 6 than you do at pin
7, but let that go for right now (we may get back to it if necessary).
So you do get the proper BFO frequency when grounding the crystals, and
as I recall you measured a low resistance across L33, so it should hav
John,
The power output of the KX1 is dependent on the power supply voltage.
A well constructed KX1 will normally deliver 4 watts on 80, 40 and 30
meters, and 3.5 watts on 20 meters with a 13.8 volt power source. Some
will do a little better and some a bit worse than that target figure.
The v
Hi John,
Basically, yes; if you want to get more than 2 watts out of the KX1, you need
an external power source. If you look at the specs on page 5 of the manual, it
says:
Transmitter
Max. power output (approx.)
9 V supply 1.5 - 2 W
12 V supply
Thanks Markus.
It is a pitty that K3 cannot work properly with the best pactor 3 modem. HF
email is now one of the cheapest and reliable way in marine and ARES.
cheers,
Johnny VR2XMC
寄件人﹕ hb9brj
收件人﹕ elecraft@mailman.qth.net
傳送日期﹕ 2010/12/5 (日) 1:56:32
Thanks for all the guidance gents. I just took the two lowest
frequiences to minimum for a test and wow what a difference in getting
heard in pileups and bearfoot.
I will have to spend time in working thru the best settings for me and
there are archives that I have been pointed too to read up
In researching the KX1, I thought I had read that it's possible to get 4
watts of output. However, the manual shows 2 watts as the max from internal
batteries. Is 4 watts possible? Does it require external batteries?
--
John Overbaugh
blog: http://kf7dvj.blogspot.com
_
I just wanted to say THANKS to Al N1AL for his work on the P3 and the latest
enhancements with ver .41 firmware.
Being able to calibrate the display level indication makes it feel almost like
an Agilent Spectrum Analyzer. (Yes I remember when you worked at H.P. Al.)
Thanks again and Happy H
On 12/4/2010 8:33 AM, gold...@charter.net wrote:
> I was not thinking about shaping but reducing the bandwith to
> concentrate the transmitt energy. Kind of like narrow filters for CW.
TXEQ will do exactly that. Go through the archives to see my
recommended settings for common mics.
73, Jim K9
> 'And, if you think about it, the total occupied spectrum width will be
> very nearly the same
no matter your keying speed up to the limit allowed by the "waveshaping." '
Lyle,
I think you've just hit upon the core of the argument often seen between two
camps (See eHam article archives for exa
Hello Group,
Just thought I would add a comment about the APF. I was ragchewing on cw in
the 40 meter band. After
signing with the station I was about to turn of the K3. I thought I heard xb
in the noise. SoI pushed in the APF button and slightly turned the shift
knob. Bingo! clear as a bell 569 c
Look at the Tx spectrum plots of radios tested by ARRL.
CW signals defintely occupy bandwidth! If they didn't,
we could do CW contests in a 10 Hz slice of each band and
accommodate every Amateur on earth with no QRM! And have
essentially 10 Hz left over!
In fact, a CW signal might have no w
George, You may have done what I did and forgot to have VOX turned on in CW
mode.
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Hello Jobst,
Comments in line...
On Sat, 4 Dec 2010 10:19:46 -0800 (PST), Jobst Vandrey
wrote:
[snip]
>I operate Digital modes (mainly PSK) and stick to QRP so Elecraft equipment
>has always been on the short list. I am now in the process of working on the
>antenna side of the equation and
Theoretically that is correct, but the true width of a CW carrier is determined
by the purity of the signal. I doubt there are many TX's that can transmit a
perfectly pure signal in any mode.
73,
Tom Childers
Radio Amateur N5GE
Licensed since 1976
QCWA Member 35102
ARRL Life Member
On Sat, 4 D
I don't think I've ever had a rig that didn't cause SOME noticeable distortion
when used with SSB, but then 88% of my lifetime QSO's have been in CW Mode.
Using the lowest settings possible is a good way to reduce the distortion, but
it won't completely go away, since it works by chopping out the
Check these two things first...
Do you have the rig set in test mode? If you do the K3 won't TX in any mode.
Do you have the VOX turned on? The K3 will not TX in CW mode without the VOX
engaged.
73,
Tom Childers
Radio Amateur N5GE
Licensed since 1976
QCWA Member 35102
ARRL Life Member
On Sat
So, hello again.
First of all i want to excuse but I give you some false informations. The
8.x MHz signal I measured was/is at Pin 7, not Pin 6 of U11. I did the test
with grounding L33/X3/X4 and there's some interesting behaviour (at Pin 7):
When I ground L33/X3/X4, the measured signal is about
Jobst,
I have to say I've been amazed by the performance of the K3 internal tuner.
Since it's relay based, I expected it to be inferior to the tuner in my
TS-440 which is motor-driven. In fact, the inverse is true. It even tunes
half of the G5rV as a very short inverted-L on 160 which I could
Current regular release P3 firmware is already at 00.41
P3 Utility should automatically gind it when set to the default settings. It is
not necessary to get it from the beta ftp directory.
73,
Eric
www.elecraft.com
_..._
On Dec 4, 2010, at 9:36 AM, Sam Morgan wrote:
> ftp://ftp.elecraft.co
I built a K2 a number of years ago while sailing (S/N #1442) and it served me
well as my only route for email to my family using Winlink and a pactor modem.
That K2 sits on the shelf at the moment (and may get sold shortly) while I am
using an Icom 703 Plus.
I operate Digital modes (mainly PSK
Johnny Siu wrote:
>
> I would like to connect my K3 with the SCS modem PTC-IIusb to operate
> Airmail.
> Could any of you advise me the correct wiring diagram between K3 and the
> modem?
>
AFAIK the PTC-II controllers do not "speak" K3 CAT commands, therefore the
"TRX Control" port cannot
ftp://ftp.elecraft.com/P3/firmware/
GB & 73
K5OAI
Sam Morgan
On 12/4/2010 6:09 AM, Ken Chandler wrote:
> Has version 0041 firmware been withdrawn I cannot find it with the utility
> software.
>
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goldtr8 wrote:
>
> Do you have an recommendations for setttings when you want to
> concentrate the signal for tough band conditions or dx.
>
Try cutting the lower 2 or lower 3 bands of TX EQ.
Barry N1EU
--
View this message in context:
http://elecraft.365791.n2.nabble.com/Re-K3-transmitt-f
> Just so someone says it, a CW signal has no width, it's carrier only. The K3
> does a fine job of generating it with a 2.7 or 2.8khz filt
> Monty K2DLJ
>
>
>>> Kind of like narrow filters for CW.
>>>
>>> I am still new to this hobby and it was just an idea that I had. Maybe
>>> when I fi
You can reduce the bandwidth by cutting lows and/or highs with TX EQ. The K3
firmware expects a 2.7 to 2.8 kHz Tx filter, and will probably display an ERR
TXF error if you select another.
Your overall objective is fine, I do this by cutting the bottom two audio TX EQ
bands to their lowest value.
Hi Barry
Do you have an recommendations for setttings when you want to
concentrate the signal for tough band conditions or dx.
Thanks
Don
On Sat, Dec 4, 2010 at 11:35 AM, Barry N1EU wrote:
> goldtr8 wrote:
>>
>> I was not thinking about shaping but reducing the bandwith to
>> concentrate the
goldtr8 wrote:
>
> I was not thinking about shaping but reducing the bandwith to
> concentrate the transmitt energy. Kind of like narrow filters for CW.
>
Limiting the audio bandwidth via EQ will also limit the transmit bandwidth
and accomplish what you are trying to do.
73, Barry N1EU
--
Hi Dick
I was not thinking about shaping but reducing the bandwith to
concentrate the transmitt energy. Kind of like narrow filters for CW.
I am still new to this hobby and it was just an idea that I had. Maybe
when I finish going thru the extra study guide over the holidays I will
know the
Tx Filter for SSB and CW and Data must be 2.7 to 2.8 kHz. Better to use TX EQ
to shape your Tx audio.
73 de Dick, K6KR
On Dec 4, 2010, at 8:04, gold...@charter.net wrote:
> If I set up my transmitt filter to use the 2.1 8 pole, would this create
> any problems. I am wondering if this would ti
Dean44 wrote:
>
> when the ESSB mode is engaged, you can turn the menu bandwidth down to
> 3.0kHz but it is really about 3.3kHz wide on the transmitted signal. This
> has been my experience on my K3 and watching other K3s on the air in the
> band scope.
>
Actually, I measure 3.0Khz transmitte
If I set up my transmitt filter to use the 2.1 8 pole, would this create
any problems. I am wondering if this would tighten the signal to
improve my TX as I am running bearfoot.
Thanks
Don
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Hi gang,
The weekly Elecraft SSB net will meet tomorrow (12/5/10) at 1800z on 14.314
MHz. I will be net control from western Oregon, and I will try to swing the
antenna in multiple directions to get as many of you as I can. We'll try
back east calling stations and relays too. See you then.
73,
Ph
The mechanisms of noise reduction nearly all result in artifacts of
some sort, which a given individual would describe as distortion
Removing anything "unpleasant" from the RF off the antenna while
surfacing a perfectly formed SSB audio which was formerly buried in
the unpleasantness and totally u
* On 2010 04 Dec 09:05 -0600, David wrote:
> Using the latest Beta Firmware I notice distortion on the audio when using
> the noise blanker even on low settings. This applies whether dsp or if or
> both are used. On reverting to Firmware 4.14 no such distortion occurs.
> Anyone else have simi
Using the latest Beta Firmware I notice distortion on the audio when using the
noise blanker even on low settings. This applies whether dsp or if or both are
used. On reverting to Firmware 4.14 no such distortion occurs. Anyone else
have similar problems?
Dave G0AIX
_
My K3 (#3873) has better transmit and receive audio than my Mark V, which I
thought was awesome. (Except the Mark V had a MUCH better internal speaker).
One disadvantage I have found with My K3 transmit audio is that you must choose
between 2.7kHz or lower bandwidth or 3.3kHz bandwidth or higher
Had some funny business on 160M with K3 power.
On 1842 +/- a KHz or two the output went to zero. It was OK elsewhere
in the band.
Redid the TX gain calibration and the problem went away.
However, I know the TX gain calibration had been done after the install
of V4.22.
Odd.
73 de Brian/K3KO
Hello Group,
I asked this question before in the mail reflector but did not get an answer.
I would like to connect my K3 with the SCS modem PTC-IIusb to operate Airmail.
Could any of you advise me the correct wiring diagram between K3 and the
modem?
SCS do not make a specifc cable for K3.
T
* On 2010 04 Dec 08:34 -0600, K4GM- George wrote:
> My K3 using 4.22 will put out full power in TUNE position. The ATU
> works fine and delivers 1:1 swr or close. However, if I switch to CW I
> get zero power out. I switched to 5 watts out and still no power out on
> cw. I hear the sidetone as
My K3 using 4.22 will put out full power in TUNE position. The ATU
works fine and delivers 1:1 swr or close. However, if I switch to CW I
get zero power out. I switched to 5 watts out and still no power out on
cw. I hear the sidetone as I key and the radio appears to go into
transmit mode beca
~
N2CQ QRP CONTEST CALENDAR
December 2010
~
80 METER FOXHUNT (CW) *** QRP Contest ***
Each Tuesday Thru Mar 15
9 PM to 10:29 PM Eastern Time USA
Info: http://www.qrpfoxhunt.org/
> By the way, if you have a P3 you can see the spikes on make, break, or
> both on the
> waterfall. You can spot the rigs that are using semi-QSK that have a big
> spike on the
> first dit and then quiet down, too.
Same with relative SSB IMD monitoring. I've been looking at the area near
the S
James,
You just discovered that some mono phase cancellation will occur when
combining two audio channels with AFX engaged. That's normal. The effect
is the same as when two channels on an analog tape deck are combined, and
those two channels are not phase coherent. If the tape heads are not
"...I'd really like to find some affordable shielded dual center conductor
stuff somewhere. ..."
I use All Electronics S-videa cable for many of my applications (I cut off
the connectors and use the cable). These cables consist of two individually
shielded cables in one overall cable. I boug
Has version 0041 firmware been withdrawn I cannot find it with the utility
software.
Ken..G0ORH
CW4EVER
Sent from my iPhone
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