Look here:
http://sk3w.se/
73 Jim SM2EKM
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H
Yes or look here:
http://www.qsl.net/oh2mcn/license.htm
Doesn´t look too bright. They say you have
to stay minimum 3 months to be able to
operate.
73 Jim SM2EKM
---
[EMAIL PROTECTED] wrote:
Ralph,
Take a look at the 9V radio club www.sarts.org.sg and the IARU
Would be nice to see measurements with preamp
both on and off.
Also please note what the MDS is.
Happy New Year / Jim SM2EKM
-
[EMAIL PROTECTED] wrote:
Tnx for info. Is this with the preamp off?
Yes.
___
Thanks Toby, I suspect the IMDDR3 wouldn´t
change much between PRE on and off then.
73 Jim SM2EKM
---
Toby Deinhardt wrote:
Would be nice to see measurements with preamp
both on and off.
Also please note what the MDS is.
TRX PRE on PRE off
IC-781 (500Hz) -14
The K3 is NOT free from key clicks, the question might be
how much we accept. Personally I would have liked it better
with the keying "a bit" softer, that is a little bit better
key click performance.
It would have been nice if there was some adjustment allowed,
lets say from 5 ms up to 7 ms or so
Is this the ARRL reflector?
Or the RTTY reflector?
or the antenna reflector?
or the anything goes reflector?
When I subscribed I had the impression it was
the Elecraft reflector, obviously I was wrong.
Can someone point me to the Elecraft reflector.
/ SM2EKM
-
"fairly high level"can you present any numbers?
What is the dynamic range for the DSP?
73 Jim SM2EKM
-
wayne burdick wrote:
The DSP subsystem has extremely high fidelity and low IMD. Until signals
reach a fairly high level, the DSP's own filtering could handle t
This I have noticed during my own IP3 measurements on my
FT-1000D, not as much as 16dB but around 3 dB.
This was with the INRAD roofing filter and 2 kHz offset.
in any case this was enough for me not to use the filter.
I´m eagerly waiting for measurement figures on the K3.
Beats me why they can´t
Lets hope Elecraft got it right!
/SM2EKM
-
Sherwood Engineering just put up their Dayton 2007
presentation on DSP and how it isn't everything it is
cracked up to be. See:
http://www.sherweng.com/documents/Dayton2007w.pdf
___
dBi or dBd? If dBi not impressive. My 20m antenna
produces 19 dBi and it´s by no means IMO very big,
just a 5 over 5 yagi stack.
73 Jim SM2EKM
---
Phil Kane wrote:
The 17 dB gain of a rhombic is hard to beat. All the
commercial HF point-to-point stations used them, as did a
Would like to buy a PR6 or PR6-10. I will be in Visalia for the DX
convention, can also produce a US shipping address.
73 Jim SM2EKM
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I did find a PR6. Thank you very much
/ Jim SM2EKM
>>
Would like to buy a PR6 or PR6-10. I will be in Visalia for the DX convention,
can also produce a US shipping address.
73 Jim SM2EKM
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On 2012-09-13 20:21, Bill W4ZV wrote:
>
> Matt Zilmer wrote
>>
>> Phase noise and key clicks are the enemy. I respectfully suggest that
>> Wayne emphasize (as well) that designing a transceiver to
>> intentionally not produce either of these is a worthy objective more
>> on a moral plane than an o
On 2012-09-13 20:46, Jim Brown wrote:
> On 9/12/2012 9:18 PM, Matt Zilmer wrote:
>> The main real-world problem is that the K3 is a minority in the
>> general ham rig population. Maybe someday, the K3 penetration rate
>> will be high enough that we can hear it in how quiet the bands are.
>> Crowde
On 2012-09-14 01:00, Al Lorona wrote:
> I once spoke to a nationally-known, "Big Gun" contester who felt that the
> phase
> noise and key click sidebands generated by his station were an asset because
> they cleared a "guard band" around his signal since other stations had to stay
> away. He felt
reasing it, and why would you want people to be
> able to mess with something that works as well as it does? I'm euphoric
> that Elecraft doesn't allow it to be adjusted.
>
> Dave AB7E
>
>
>
> On 9/14/2012 1:10 AM, Jan Erik Holm wrote:
>> I would like to
ral bad behavior. In my opinion, the person who does not speak
> out becomes a sideline enabler.
>
> So much for amateur radio being a self-policing hobby ...
>
> Dave AB7E
>
>
>
> On 9/14/2012 1:23 AM, Jan Erik Holm wrote:
>>>
>> Nothing new und
On 2012-09-14 21:34, Jim Brown wrote:
> On 9/14/2012 12:02 PM, Jan Erik Holm wrote:
>> So if I don´t report those guys I´m as bad as they are. Jeez, are you
>>
>> serious?
>
> When I was part of the American Civil Rights Movement many years ago, we
> learned that if y
On 2012-09-14 22:21, David Gilbert wrote:
>
> I only said "almost no clicks" because I don't believe in absolutes.
>
OK then I know where you stand.
>
> Please identify what level (in db referenced to the main carrier within
> some defined bandwidth) you believe clicks are generated by the K3 and
On 2012-09-14 22:15, Ron D'Eau Claire wrote:
> Key clicks are CW modulation sidebands. Key click management is about having
> CW sidebands that occupy a reasonable amount of the spectrum, not
> eliminating them entirely. Eliminating clicks (the sidebands) is easily done
> - just don't key the signa
Same here, I have a 6/6 Yagi stack on 10 and get more or less
the same reaction.
A built in preamp for 6 and 10m would have been super. As
soon as I get some time I will make one.
/SM2EKM
--
On 2012-10-26 18:02, Dave Hachadorian wrote:
> I have 6 elements on 10, and the K3
It would be very interesting to read that article
but I don´t have Funkamateur magazine.
/ Jim SM2EKM
On 2018-04-05 06:57, Benny Aumala wrote:
FUNKAMATEUR 4-2018 has interesting article by OE3HKL for
broadbad impulse measurements of RX IMD.
Arrangements are interesting and elaborate, but resu
Yes but to what rise/fall time was the radio set? AFAIK in
the FT5000 it can be changed.
/Jim SM2EKM
---
On 2010-12-02 02:43, Eric Swartz - WA6HHQ, Elecraft wrote:
> They already have - See the keying bandwidth spectral plots in the ARRL
> reviews. The FT-5000 is considerably wider tha
Yes absolutely
/SM2EKM
On 2010-12-02 02:58, Steve Ellington wrote:
> Wouldn't having bad key clicks be an advantage in a contest?
>
> Steve N4LQ
>
>
>
> - Original Message -
> From: "Eric Swartz - WA6HHQ, Elecraft"
> To: "David Gilbert"
> Cc:
> Sent: Wednesday, December 01, 20
world and some of these "jerks" even
gets defended by the contest sponsors.
/ Jim SM2EKM
---
On 2010-12-03 14:48, Barry N1EU wrote:
>
> is no advantage. In any case, you are just being a jerk (or worse) if
> you're knowingly producing key clicks.
>
> Barry N
OK. AFAIK at 4 ms a CW TX will have to much
bandwith. Even the K3 at 5 ms (if it hasen´t changed
since I measured it) do have "mild clicks". I wish
the K3 could be set to something like 7 or 8 ms.
/ Jim SM2EKM
On 2010-12-03 14:43, Barry N1EU wrote:
>
>
>
rwise excellent
> SSB Tx IMD numbers, especially in Class A?" Really, the published Tx IMD
> figures are meaningless unless dynamic testing is conducted to simulate
> rapid changes in power associated with voice modes.
>
> Paul, W9AC
>
> - Original Message -
>
estion is
>> "what is the FTdx5K's ALC doing to undermine the rig's otherwise excellent
>> SSB Tx IMD numbers, especially in Class A?" Really, the published Tx IMD
>> figures are meaningless unless dynamic testing is conducted to simulate
>> rapid c
Yes I do know that it´s not the rise/fall time
alone, that has never been my point. However
one factor is the rise/fall and if it´s too fast
it will not be possible to fix it with shaping.
Why, yes IMO the K3 clicks too much. I know it
can be done since there are radios around that
doesn´t click a
No I do not experience key clicks with my own K3. I don´t know
what it sounds like and it´s no idea to ask anyone either.
It is all the other K3´s that are on the air that has "mild keyclicks"
Yes there are hot switching amps and QSK amps that aren´t
correct, I usually can detect those.
No it´s
ent! Rise time alone, does not cause
> key clicks!
>
> And just for the record Elecraft, I do NOT want you to change this CW rise
> time on the K3!
>
> Tom - W4BQF
>
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mai
e time controls the basic CW bandwidth but "clicks"
> are a feature of discontinuities in the CW envelope. Please
> do not confuse the two.
>
> 73,
>
> ... Joe, W4TV
>
> On 12/3/2010 9:46 AM, Jan Erik Holm wrote:
>> Waveform? When you have a 1 ms raise/fa
Good my 5 ms measurement was the closest so far.
Thank´s for the explanation on the construction,
appreciate it.
After all, why should I bother, if my K3 clicks it
doesn´t disturb me.
/Jim SM2EKM
On 2010-12-03 17:56, Wayne Burdick wrote:
> There will never be a K3 menu option th
he envelope with the resulting click.
>
> The change in ALC generated clicks with changing envelope
> decay is minimal.
>
> 73,
>
> ... Joe, W4TV
>
> On 12/3/2010 2:06 PM, Jan Erik Holm wrote:
>> Yes 99% of all CW stations clicks at the "break" side.
>>
>
Fourier analysis on this but it
was 35 years ago and I just have forgot it all. The teacher I had
was a ham but he is an SK now.
/ Jim SM2EKM
--
On 2010-12-03 20:36, Kok Chen wrote:
>
> On Dec 3, 2010, at 11:06 AM, Jan Erik Holm wrote:
>
>> Yes 99% of all CW stations click
For a CW signal with clicks at the break side (like the majority)
the faster you key the stronger and wider will the click bandwith
be. This can clearly be heard every day on the ham bands.
So this calls for Camp 2.
However I do not agree that it´s either 1 or 2, in practice it works
differently.
I finally got to use the APF in reel life, I´m not too
active these days.
Wanted to work the ZL8X boys on 160 so went out to the
radio station and brought the K3 with me and fired the
big rig up.
All I can say is that the APF is excellent. ZL8X was weak
as water but with APF it was possible to copy
Exactly, I have noticed this too but never said anything before.
It did happen a few times during the SAC CW contest that I operated,
never had time to take part in CQWW CW. The radio do have
a problem in this respect and I can see that 5B4AGN has found
it too.
Something is going on but what it is
I hope people doesn´t learn from this statement.
IMO this is as far from logic one can get.
/Jim
--
On 2010-12-21 02:27, Don Wilhelm wrote:
>
> The ground conductivity in my area is not the greatest, so I have
> accepted the logical consequences of that fact.
>
> 73,
> Don W3FPR
>
_
No problem at this end, I use AVG.
/James
-
On 2010-12-30 19:30, Jim Brown wrote:
> Thanks for the alert, Rich, and for your report, Guy. I would
> appreciate any others. If it turns out to be real, I'll take it down.
>
> 73, Jim K9YC
>
> On 12/30/2010 5:42 AM, Rich - K1HTV wrote:
>> Jim
Is this a known issue with the FT-2000?
/SM2EKM
On 2010-12-31 23:31, Joe Subich, W4TV wrote:
>
> or issues of IMD generated in the noise blanker (even when the NB
> is off).
>
> 73,
>
> ... Joe, W4TV
>
__
Elecraft mailing
gt;
> The FT-2000 uses the same noise blanker circuit as the FT-1000,
> FT-1000D, FT-1000MP, etc.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 1/3/2011 2:31 PM, Jan Erik Holm wrote:
>> Is this a known issue with the FT-2000?
>> /SM2EKM
>>
>> On 2
ll suddenly operate differently in a fourth model.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 1/4/2011 12:54 AM, Jan Erik Holm wrote:
>> Yes I know all of this about the FT-1000, this was
>> NOT the question.
>>
>> I have never heard that the NB in the 2000 is pr
Or here
http://www.kongsfjord.no/dl/dl.htm
Jim SM2EKM
-
On 2011-01-22 08:23, David Cutter wrote:
> Others have mentioned null steerers that you can buy and are very effective.
> If you would rather build one for yourself, see the latest SPRAT (best value
> for money radio mag - eve
Yes do you want to buy one?
/Jim SM2EKM
-
On 2011-01-25 20:09, Grant Youngman wrote:
> A listen on the bands during most contests, makes it pretty clear which of
> the 3 is most normally left out :-)
>
> 4cx15000 anyone?
>
> Grant/NQ5T
>
> On Jan 25, 2011, at 12:59 PM, Lu Romero wrote:
>
Good for you that they had an ACOM amplifier otherwise you
wouldn´t have worked them. Instead you should send a thank
letter to ACOM.
Jim SM2EKM
On 2011-02-01 23:54, Rich - K1HTV wrote:
> The So. Orkney micro-lite DX-pedition must be using a K3 on 160M. They heard
> my
> bar
Wayne,
Is there a way to do this " at home" ? Since I´m in Sweden
it might not be practical to send the radio all the way to
California for this.
73 Jim SM2EKM
--
On 2016-10-17 02:25, Wayne Burdick wrote:
Knut,
The K3S as originally shipped does not
On 2016-12-23 19:11, Alan Bloom wrote:
You could always compensate for it by adjusting the K3 for softer
key shaping.
Alan N1AL
How do you do that ?
/ 73 Jim
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Yes was thinking it was something new.
Thank´s Alan
73 merry xmas / Jim SM2EKM
On 2016-12-24 06:23, Alan Bloom wrote:
Apparently you can't. I must have been thinking of the weight adjustment.
Alan N1AL
On 12/23/2016 09:22 PM, Jan Erik Holm wrote
If I understand my source correctly there is
going to be one such thing available.
Looking for more info.
/Jim SM2EKM
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On 2013-07-05 22:22, Brian Alsop wrote:
SWR is a pretty coarse indication of interaction. Interactions can
change directional antenna F/B and F/S ratio by 6-10 db easily (assuming
you have it in the first place) and hardly affect SWR.
At least, this is my experience from antenna modeling.
Howe
Will the K3/0 in the future be expandable to
a K3/10 or K3/100 ?
Since, if I haven´t got the wrong information,
the price tag of the K3/0 is about half of a
basic K3 this could be nice.
73 Jim
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Still waiting for information on this. Any progress?
73 Jim
,
On 2011-12-08 02:09, Wayne Burdick wrote:
> Hi Lee,
>
> The clicks are due to the fact that the K3 uses PIN diode switching of
> all stages during T/R. The clicks fall off with frequency, and in some
> cases might be
I can not understand how going down to the local post
office would be a problem and if the customer pays the
shipping why would that present a problem for the seller,
but then again what do I know?
/ Jim SM2EKM
On 2011-06-02 18:12, Phil Hystad wrote:
> One reason is that sending a
Well when I was in to EME on 2m I was hunting for
every .1 dB I could find.
/Jim SM2EKM
--
On 2011-06-07 16:42, Rose wrote:
>
> There's a saying among VHF / UHF'ers in reference
> to coax and connector losses that every .5db counts.
>
> 73! Ken - K0PP
__
Before I hassle elecraft support maybe someone on
the list can come up with something.
Just put together a new K3 and I can´t get any mic
connection to the FP connector, i e no modulation.
It works ok from the rear connector.
I checked Config / Main and don´t seem to find any
errors. Is there any
ing "2"
> should toggle the bias on and off. 73, Guy.
>
> On Fri, Nov 16, 2012 at 9:40 AM, Jan Erik Holm <mailto:sm2...@bdtv.se>> wrote:
>
> Before I hassle elecraft support maybe someone on
> the list can come up with something.
>
> Just put
2012-11-16 17:52, Don Wilhelm wrote:
> Jim,
>
> The MIC SEL menu item is found in the main menu. The entry in the
> CONFIG menu is MIC BTN which is for the :MIC BUTTONS - that is the up
> and down buttons if they are present.
>
> 73,
> Don W3FPR
>
> On 11/16/2012 11:11
with the menu display
> going back and forth between "FP.x bIAS" and "FP.x " .
>
> Does it not do this?
>
> 73, Guy.
>
> On Fri, Nov 16, 2012 at 1:17 PM, Jan Erik Holm <mailto:sm2...@bdtv.se>> wrote:
>
> Yes MIC BTNunderstand, it
Indeed! This was reported many many moons ago, also by me.
No fix I guess, just the way the K3 is.
/SM2EKM
On 2011-12-04 15:11, Cady, Fred wrote:
> S5 region, which is common, AGC is compressing them together. When AGC
> is off, these signals are now in a linear region of the transfer curve
> and c
Oh by the way, this "thing" is not an audio thing. It is
something totally different.
Think this issue was discussed last year. There where
some leads on it but don´t know the outcome, if any.
/Jim SM2EKM
---
On 2011-12-04 18:05, Jan Erik Holm wrote:
> Indeed! This was
This is exactly what I have noticed too. Not even 10 signals
are needed either.
/SM2EKM
---
On 2011-12-04 20:53, Merv Schweigert wrote:
>
>> Also, in the heat of the contest or DX pile up most reporters do not
>> recall how they had their AGC parameters set (
Could be interesting if you could name at least a few
of these radios?
/SM2EKM
---
On 2011-12-04 20:14, Eric Swartz WA6HHQ - Elecraft wrote:
>
> This is an issue that has been reported for years on a wide range of
> radios from all of the manufacturers, with conflicting reports pro/con
> on
nds multiple
> cw signals. So far it has not reproduced the issue here.
>
> What is the signal spacing you are hearing this with? All -exactly- on
> the same freq? Or spread out?
>
> 73, Eric
>
> _..._
>
>
> On 12/4/2011 12:20 PM, Jan Erik Holm wrote:
>> Th
How do you have the TX DLY set ?
/ Jim SM2EKM
Den 2020-12-07 kl. 20:37, skrev Barry Simpson:
I beg to differ.
I have an original K3 dating from 2009 which I completely updated including the
synthesisers. It made no difference to the shortened character issue which is
still the same.
It is t
Checking product information I can see it is advertised as a 1000W PEP
amplifier. What happens with IMD at over 1300W?
/ SM2EKM
---
Mitch Wolfson DJØQN wrote:
Eric,
The thing that makes the KPA-1500 most attractive from my perspective,
and surely others, is it's su
limit (750 watts), anyway ;-)
73,
Mitch
- Original Message - From: "Jan Erik Holm"
Cc:
Sent: Tuesday, December 23, 2008 10:28 AM
Subject: Re: [Elecraft] RE: Any Amplifier News
Checking product information I can see it is advertised as a 1000W PEP
amplifier. What happens w
I beg to differ. Christmas eve is Dec 24
/ SM2EKM
---
DOUGLAS ZWIEBEL wrote:
In chronological sequence:
HanukkahMonday December 22, 2008 for 7 days, ongoing now
Christmas Thursday December 25, 2008
Kwanzaa Friday December 26
I find nothing about it in any manual. R11 on KPA3
I guess. What are the specifications for the bias
adjust?
73 Jim SM2EKM
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Subscriber Info (Addr.
there can give you specifics.
Ron AC7AC
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jan Erik Holm
Sent: Saturday, January 03, 2009 6:55 AM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] K3 KPA3 bias adjust
I find no
> Tom, N5GE wrote:
>
> This indicates that the SB200 input is not 50 ohms. You may have some
> troubles with the SB200 input, but you should be able to adjust that.
> Look at the SB200 manual and see if it has input matching adjustments.
Yes it has. Take amp out from the green cover, tune the inp
I´ve always wondered about this, I wouldn´t even call it
interaction, it´s like "more" then interaction.
Mic gain should NEVER have any influence on Vox gain.
Please Elecraft fix this as soon as possible. IMO this
is a very big design flaw.
73 Jim SM2EKM
-
Bruce McLaug
Thanks for the explanation, I understand how it´s done,
however I see it in a different way, sorry.
73 Jim SM2EKM
--
Lyle Johnson wrote:
>> Mic gain should NEVER have any influence on Vox gain.
>
> Mic Gain should always be adjusted to provide 4+ bars of "ALC"
> indication on
There is a lot more to a radio but RX IMDDR3, seems
to me people tend to forget that.
A radio, at least the kind we talk about here, also
has a transmitter, don´t forget that!
/ Jim SM2EKM
-
Koppendorfer Klaus wrote:
> see: http://www.remeeus.eu/hamradio/pa1hr/productreview.ht
Yes 7052 is not a good spot in EU for CW. Good idea instead
going below 7040, 7025-7033 segment would be just fine.
/ Jim SM2EKM
-
Geoffrey Mackenzie-Kennedy wrote:
> Hi Wayne,
>
> Look forward to that! One suggestion, the 40m frequency 7040 kHz is used by
> Eu RTTY stations (
Don´t say that. I´m still very comfortable using my old FT-1000D.
Since the TX IMD performance of the K3 is much inferior to the
FT-1000D I´m glad I kept it. I feel very reluctant using my K3
on SSB.
73 Jim SM2EKM
-
Robert C.Abell wrote:
> Hunter,
>
> You will be very sorry i
So we are going to ride the RF gain just like we
did 50 years ago, to me that´s a step in the wrong
direction.
IMO the K3 is a good enough radio and has enough
"things" built in that riding RF gain isn´t needed.
/ Jim SM2EKM
Dave Hachadorian wrote:
> - Original Message -
Elecraft K3 is sold as a "High Performance Radio",
this is in print clearly stated on the web page.
The 6m RX in K3 can not be called high performance.
With a NF of above 10 and MDS as it is.
The transmitter on SSB has so poor IMD that it can
not be called high performance. ARRL and many others
h
ese days or if we
> could afford it?
>
> Question, can you hear IMD off the air or just the artifacts?
>
> As Wayne said earlier everything is a trade off.
>
> 73 de jay/w5jay..
>
>
> - Original Message -
> From: "Jan Erik Holm"
> Cc:
Bill and others, hold on and think about these
figures. -35 to -38 dB IM3 !! We are dealing
with 2SC2782 transistors operating at around
12V DC. I say no more, the knowledge and intelligent
individual will understand.
/ Jim SM2EKM
-
Bill W4ZV wrote:
>
> "I measured around -35
Yes of course, "however" this cable is supplied by Elecraft
and is part of the "high performance" kit.
My own PS has a 0.06V drop RX > TX and that is good enough!
/ SM2EKM
---
Alan Bloom wrote:
> One factor that affects IMD is power supply voltage variation under
> load. The standard PS c
here, I´m getting reel puzzled
and frankly quite tired of this.
I wish there would be a "service manual" available,
like there is for any Japanese rice box. I mean
a manual that contains all data for all adjustments.
Why not??
/ Jim SM2EKM
-------
Joe Subich, W4TV wr
Yes I´m beginning to think that K3 is more sensitive to PS
then other radios, right now it looks that way.
Then this should be in the manual!!!
What happens is if I have a bad signal on the bands I will
together with Elecraft get a bad reputation. I will of course
tell everyone what I´m running and
t; It would be interesting to try a better supply cable and also to see if the
> 20A cutout has any effect.
>
> Mike
>
> Jan Erik Holm wrote:
>> Yes I´m beginning to think that K3 is more sensitive to PS
>> then other radios, right now it looks that way.
>> Then
Rick, and others
Just to clarify things a bit.
First of all when I did get the "bad IMD" report on the
air I was at a different QTH and used a another PS, in
this case I do not know exactly what voltage K3 got or
voltage drop.
Then I did bring K3 home to a PS that had 13.9V RX and
13.5V at TX, did
Conclusion must be, never ever use 5.0W or 50W except
when calibration is needed.
Why cant power calibration be turned off? Then we would
not have this "source for trouble".
/ SM2EKM
Joe Subich, W4TV wrote:
>
>> So, if I'm tuning up through, say, a Z-Match into a doublet
>> and power ou
Darwin, Keith wrote:
> Yes, but this isn't about the best performing rig. The KWM-2 certainly
> had limits and deficiencies (cost being one of them), yet it left a mark
> on ham radio that continues to this day.
>
This might be true if you think "the world" is "the USA". Speaking
for the rest of
Info about this:
http://www.itu.int/itunews/issue/2003/06/solutions.html
7000-7200 kHz will be exclusive amateur radio and
will take place 29 Mar 2009.
/ Jim SM2EKM
---
Tom, N5GE wrote:
> On Fri, 20 Feb 2009 16:18:07 +, you wrote:
>
>> sometime in March - not vacate I think, b
My findings are be sure to run as high voltage to K3
as possible. Per the manual 15V is the stipulated
maximum, run K3 at 14.9V and make sure you have no
voltage drop in the cable between K3 and PS. This
will give you the best TX performance in respect
to IMD.
/ Jim SM2EKM
--
Steve Ell
Don Rasmussen wrote:
> Anyone care to take a guess as to how long an anomoly like this would live in
> any other mass produced HF transceiver?
>
> My guess - the life of the radio.
>
> Maybe the Flex guys would get to it.
>
> With Elecraft, the issue was identified on the weekend, and here it
I have the same. Also on a number of other places between 0.5 - 30 MHz.
Was there any response from Elecraft on this?
/ SM2EKM
N2TK wrote:
> James,
> I am getting a much lower level of noise than you. With no antenna and the
> preamp off, the first bar on the S-meter barely flickers.
From the rules:
Please limit power to 100W maximum.
Since I don´t operate at the 100W power level (or lower)
does it mean I can´t take part in it? Just let me know
and I will not bother.
/ Jim SM2EKM
---
> The Elecraft QSO Party is coming up this Saturday, 14 March.
>
> http://
When 10m opens up this will be a serious problem.
On 28005 KHz a quite strong birdie carrier, on
each side of this carrier there are "tuning pulses
generated from the encoder in the segment 28000 to
28010 KHz. All this gets stronger with Preamp ON.
Is it only my K3? Or is this on all of them?
An
may be experiencing a much greater problem than I am. If
> so, you may want to consider making an audio recording of it so that the
> rest of us can hear it.
>
> 73,
> Dave AB7E
>
>
>
>
> Jan Erik Holm wrote:
>> When 10m opens up this will be a serious
This was on the agenda a while ago. Any
progress on it?
73 Jim SM2EKM
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Mike-WE0H wrote:
>
> Frequency stability is extremely important for operating on those LF &
> MF bands.
>
Can´t see why it´s more important on LF then on HF/VHF/UHF
however frequency stability is always good.
Jim SM2EKM
__
Elecraft m
Amen! Best so far.
Let´s move on.
/ James
-
On 2010-08-13 17:01, David Cutter wrote:
> A transistor is the fastest fuse on 3 legs, beats a 2-legged fuse any day.
>
> David
> G3UNA
>
>> I like to tell the story about a series of tests we did when I worked at
>> Fairchild, in
>> Silicon
Oh lord all mighty, save us from all IMD. This crap is already made
by RM Italy.
/ Jim
---
On 2010-09-10 18:59, Edward R. Cole wrote:
> ham come up with one? Price ought to be in $125-150 bracket since no
> filtering is needed if used with the following KPA500.
>
>
> 73, Ed - KL7UW
___
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!
>
>
Yes please do!!
Jim
On 2010-10-08 18:56, Wayne Burdick wrote:
> Bob,
>
> I could change all of the transmit filter bandwidth restrictions in
> firmware, and this is on my list. But it would be a complex change,
> and I have to weigh it against many competing firmware change
> requests. I
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