Re: [Elecraft] W2 Utility

[Ken Chandler]

Then that's 2 happy chappies then Bert, for I've fixed 2 of my probs.
1st, had a err pll2 on tx calibration after the full build. Fault in  
seating of the sub rx!! 2nd,  my SPE Expert amp hooked up to the k3  
for the first time would not put the amp in tx from the key out   
socket fixed that but weird, switched off k3 and amp turned back on es  
hey presto it decided to tx, oh well we live es learn!!

Ken..G0ORH

PsThe K3 es SPE expert amp do go well together on the desk!

Sent from my iPhone




On 18 Dec 2009, at 03:09, n...@aol.com wrote:

> Thanks to K2AV, I solved my problem with calibrating my K3 TX  
> output. The
> problem I was having was due to two things: first, I was using the  
> owner's
> manual from August 2008 (when I got the rig)...the latest online  
> version is
> quite different when it comes to TX calibration, and second, I found  
> that
> the  length of coax between the K3 and the pickup made a BIG  
> difference as
> the  frequency increased...changing to a 1-foot length made the  
> difference!
>> From the  pickup to the dummy load, it's only a 1-foot length of  
>> RG-214.
>
> The help was appreciated. Quite an exercise in frustration!
>
> Happy Holidays to all,
>
> Bert, N4CW
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Noisy K3 receiver

[srife]

You guys may be exceptions to the rule. The # of complaints seem to
far outweigh what you two guys are saying. I'm not saying you are wrong,
just that it seems that a lot of people are hearing a problem. I have
SN/0690 and to my ears it has always been on the noisy side. Some of this
may be due to ignorance about how to set up the K3 properly. I am pretty
sure that is true on my end, in part. I have never tried to dig deep enough
in the manual or the menus to try and make the situation any better. It is a
little intimidating to me and that is why I have never dug too deep in to
the menus to try and make things better.

 I hope to change all this in the near future. I am catching up on
the mods and upgrades and with an updated manual I hope to have some success
in making my K3 sound better to MY ears. 

Ed, I most definitely have never felt like that my K3 was TOO quiet.
Lots of background static and hash that is fatiguing to listen to. I don't
know what else to say...I know I am not imagining it. I would much wrather
listen to my TS-830s, but I have hung in there with the K3 knowing that
there is light at the end of the tunnel. I just have to figure out what page
that is on in the manual.  hi hi 


Stan Rife 
W5EWA 



-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Steve Ellington
Sent: Friday, December 18, 2009 1:10 AM
To: w...@msn.com; Elecraft@mailman.qth.net
Subject: Re: [Elecraft] Noisy K3 receiver

Ed
I agree. I have no idea what these people are talking about.
I've had a lot of radios. My last was the IC-7800 which sat beside the K3 
for a month until I sold it. I can't imagine what this noise is that people 
think they hear. Perhaps a .wav file from someone would be helpful.

Steve
N4LQ
n...@carolina.rr.com
- Original Message - 
From: "Ed Muns" 
To: 
Sent: Friday, December 18, 2009 12:03 AM
Subject: Re: [Elecraft] Noisy K3 receiver


>> I've had #1823 for just over a year, and I still don't like
>> the sound of the receiver. That's the reason the K3 sat in a
>> box for months while my trusty FT-1000mkV sat on the
>> operating desk (until the MkV went on strike in the middle of
>> the SS CW :-(
>
> I've read all the posts in this thread and have to say ... I just don't 
> "get
> it".  What noise?!  If anything my two K3s are too quiet!  It has occurred
> to me more than once that I might have an antenna disconnected or perhaps
> blew out the front-end to the radio.  The most distinguishing 
> characteristic
> of the K3 (for me) is how quiet it is when you slip on the headphones. 
> The
> K3 is distinctively quiet compared all the Icom, Yaesu and Kenwood radios 
> I
> own or have operated.  I now realize that all the pre-K3 radios I've used
> were somehow amplifying or emphasizing the band noise, plus adding a bunch
> of digital artifacts, in the audio.  I am completely stunned by the posts
> here that report "noisy K3 receiver" and escaping to a "quieter" Japanese
> radio.
>
> I've been using K3s 11 and 17 ever since the field test units first came
> out.  I've kept current with all the updates and mods so despite the early
> serial numbers, these radios are equivalent to what is currently shipping.
> I always have the latest field test firmware in both radios.  This is
> pre-Beta and pre-production firmware that has never interfered with my use
> of the radio.  I use the radios primarily for CW, RTTY and (rarely) SSB
> contesting, plus a bit of DXing.  It took me a full month of using the K3 
> to
> finally accept the fact that its receiver is so incredibly quiet compared 
> to
> any other radio.  I thought something was wrong!  And yet with the greatly
> reduced band noise in the headphones, extremely weak signal are easy to
> copy.  80 and 160 are like new bands, more like the higher bands, with my
> K3s.  And the pile-up/crowded band receive capability is far superior to 
> any
> radio I've ever operated.
>
> I'm not doubting the reports here on the reflector about "noisy K3
> receiver", but I have to say that either the specific radio has a major
> defect or the various gain and AGC controls are not setup correctly.  W4ZV
> has posted on this reflector several excellent explanations on how to
> properly adjust the K3, or any radio for that matter.  I would love to 
> hear
> one of these "noisy K3 receivers" and see how they are configured.
>
> Ed - W0YK
> ---
> Ed Muns
> Muns Vineyard - www.munsvineyard.com
> FaceBook - www.facebook.com/munsvineyard
>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3 audio filter board

[srife]

If you will go to the mods & kits section for the K3 on Elecraft's
website, the description of the upgraded DSP REV C board describes exactly
what changes it has. Someone actually posted it here on the reflector
earlier for all to read. It is pretty clear to me, but YES, the low
frequency response mod has been added which means that it does have a "low
frequency bandpass filter" for the audio chain on the DSP board. At least
that is what I interpreted it to say. 

I hope I haven't mis-spoken.


Stan Rife 
W5EWA 



-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ben Horton
Sent: Thursday, December 17, 2009 4:44 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] K3 audio filter board

I, too, would like to know the answer to these questions

N1LQ wrote:

I too am wondering if the newer Rev. C DSP boards have the AF filter 
board already installed on them.

Also, it seems that quite a few folks here on the list have these AF 
filter boards in hand and installed already. 

How does one get in queue to receive one?

Perhaps someone in Aptos can enlighten on these points?  Thanks.

Seasons' Best to all.

Thanks and Happy Holidays

Ben   K5EX


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3 Rev C +AF filter

[srife]

Sorry, my posts have been going to individuals instead of the reflector.




I have tinnitus in both ears and less high frequency noise is a good
thing for me. I can see where the younger guys, and some older ones that
still have good hearing, are not bothered by the K3 audio. The Heil headset
does seem to make an improvement...or maybe it's just that all of the other
noises (room etc.) go away and it makes listening to the K3 much better
because you can turn down the AF gain some. 

I'll have to admit that I have not attempted adjustment to the
equalizers or messed with the AGC adjustments that some have mentioned. I am
in the process of getting SN/0690 up-to-date with the mods that are listed
on Elecrafts site, and also have ordered the upgraded DSP board. Once the
hardware & FW are up to date I'll start digging in the new manual and see if
I can make my listening experience better.

This is a good thread and I'm listening.


Stan Rife 
W5EWA 



-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of David Olean
Sent: Thursday, December 17, 2009 5:01 PM
To: Vic K2VCO; k4pi
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 Rev C +AF filter

I have two K3s, one has  the new DSP board, so I hooked them up together and

listened to low frequency tones. The higher SN radio definitely has more 
bass. In fact I have noted a few times, just how low it goes. It seemed very

unusual for a communications radio to do that. So I listened to the older 
one and it has less bass, but to be honest, I don't see a problem with it. 
It sounds just fine to me. Now if it was my stereo FM receiver I would heave

it out, but I chase DX with it and see no big reason to update it. I guess 
it is a personal decision for folks. I am using a Heil headset to make the 
comparison. I am almost 65 years old and my hearing is hosed on the high 
end. I am not sure if it is from the several decades of weak signal work, or

having way too much fun in the 60's, but my upper limit is now a bit over 6 
or 8 kHz. I tune in CW at about 450-500 Hz.

Dave K1WHS

- Original Message - 
From: "Vic K2VCO" 
To: "k4pi" 
Cc: 
Sent: Thursday, December 17, 2009 9:43 PM
Subject: Re: [Elecraft] K3 Rev C +AF filter


> k4pi wrote:
>> I am anxious to see what the new board will do.  I have used QF1A for 
>> many
>> years and never found a radio yet where it did not enable me to copy 
>> signals
>> much better.  I treat my QF1As like gold and never operate without one in
>> the Peak mode.
>
> All the board changes do is improve low end response, which in my opinion 
> is already more
> than good enough for CW and SSB work.
>
> The 'filter' mentioned is not a peak or null filter, but just a lowpass 
> filter to remove
> some very high-pitched DSP artifacts that bother some operators.
>
> In my opinion, this replacement board is not something that everyone 
> needs. I will
> probably order the filter sub-board by itself when it becomes available 
> even though I'm
> probably too old to hear the DSP artifacts in question, but don't intend 
> to bother with
> replacing the DSP board.
> -- 
> 73,
> Vic, K2VCO
> Fresno CA
> http://www.qsl.net/k2vco
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Noisy K3 receiver

[Steve Ellington]

Ed
I agree. I have no idea what these people are talking about.
I've had a lot of radios. My last was the IC-7800 which sat beside the K3 
for a month until I sold it. I can't imagine what this noise is that people 
think they hear. Perhaps a .wav file from someone would be helpful.

Steve
N4LQ
n...@carolina.rr.com
- Original Message - 
From: "Ed Muns" 
To: 
Sent: Friday, December 18, 2009 12:03 AM
Subject: Re: [Elecraft] Noisy K3 receiver


>> I've had #1823 for just over a year, and I still don't like
>> the sound of the receiver. That's the reason the K3 sat in a
>> box for months while my trusty FT-1000mkV sat on the
>> operating desk (until the MkV went on strike in the middle of
>> the SS CW :-(
>
> I've read all the posts in this thread and have to say ... I just don't 
> "get
> it".  What noise?!  If anything my two K3s are too quiet!  It has occurred
> to me more than once that I might have an antenna disconnected or perhaps
> blew out the front-end to the radio.  The most distinguishing 
> characteristic
> of the K3 (for me) is how quiet it is when you slip on the headphones. 
> The
> K3 is distinctively quiet compared all the Icom, Yaesu and Kenwood radios 
> I
> own or have operated.  I now realize that all the pre-K3 radios I've used
> were somehow amplifying or emphasizing the band noise, plus adding a bunch
> of digital artifacts, in the audio.  I am completely stunned by the posts
> here that report "noisy K3 receiver" and escaping to a "quieter" Japanese
> radio.
>
> I've been using K3s 11 and 17 ever since the field test units first came
> out.  I've kept current with all the updates and mods so despite the early
> serial numbers, these radios are equivalent to what is currently shipping.
> I always have the latest field test firmware in both radios.  This is
> pre-Beta and pre-production firmware that has never interfered with my use
> of the radio.  I use the radios primarily for CW, RTTY and (rarely) SSB
> contesting, plus a bit of DXing.  It took me a full month of using the K3 
> to
> finally accept the fact that its receiver is so incredibly quiet compared 
> to
> any other radio.  I thought something was wrong!  And yet with the greatly
> reduced band noise in the headphones, extremely weak signal are easy to
> copy.  80 and 160 are like new bands, more like the higher bands, with my
> K3s.  And the pile-up/crowded band receive capability is far superior to 
> any
> radio I've ever operated.
>
> I'm not doubting the reports here on the reflector about "noisy K3
> receiver", but I have to say that either the specific radio has a major
> defect or the various gain and AGC controls are not setup correctly.  W4ZV
> has posted on this reflector several excellent explanations on how to
> properly adjust the K3, or any radio for that matter.  I would love to 
> hear
> one of these "noisy K3 receivers" and see how they are configured.
>
> Ed - W0YK
> ---
> Ed Muns
> Muns Vineyard - www.munsvineyard.com
> FaceBook - www.facebook.com/munsvineyard
>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html






No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 9.0.716 / Virus Database: 270.14.112/2571 - Release Date: 12/17/09 
14:40:00

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] AM broadcast HD noise on K3 synchronous reception mode

[amfmtv]

I have been experimenting with the K3's synchronous AM feature 
and was  wondering about why I am hearing a background "roar"
whenever I tune in an AM  broadcast station that is running
HD.  The "roar" is not something  supersonic, but is heard right through 
the audio that runs from 30Hz to  5kHz.  I am a broadcast engineer dealing 
with AM transmitters, and am  familiar with the AM HD transmission techniques.  
The HD sidebands are  located approximately 6 to 17 kHz removed from the 
carrier, are about 20db down  from the carrier, and when detected on an AM 
envelope detector, are heard as a  "hiss".  I was thinking that if the K3's 
bandwidth was narrowed 
to less  than 6 kHz, using both the 6 kHz roofing filter and
the DSP filtering, the  digital HD sidebands would simply be
unheard since they would fall outside of  the bandwidth of
the receiver.  Using the K3 in standard AM mode, thats  just
what happens, you hear no "roar" underlying the detected audio.   
However when switched to either synchronous
mode or USB or LSB in SSB  mode, those HD sidebands appear to 
be causing that "roar" in the detected  audio.  That also got me
to wondering what effects other spurious  signals near an AM
(or SSB) signal would be audible or detectable as "noise"  or
any other artifact in the detected audio.  Has anyone else 
found  this to be happening on their K3's in synchronous AM or
SSB modes?
 
Ted   W8IXY
_amf...@aol.com_ (mailto:amf...@aol.com) 
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] WTB: XV222

[David Smith]

Hello fellow Elecraftees,

My XV222 was stolen from my vehicle and I need to replace it before the January 
VHF contest. Does anyone have one out there for sale that, hopefully, won't 
break the bank?

Thanks,

73, Dave W6TE
w...@msn.com
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Noisy K3 receiver

[Ed Muns]

> I've had #1823 for just over a year, and I still don't like 
> the sound of the receiver. That's the reason the K3 sat in a 
> box for months while my trusty FT-1000mkV sat on the 
> operating desk (until the MkV went on strike in the middle of 
> the SS CW :-(

I've read all the posts in this thread and have to say ... I just don't "get
it".  What noise?!  If anything my two K3s are too quiet!  It has occurred
to me more than once that I might have an antenna disconnected or perhaps
blew out the front-end to the radio.  The most distinguishing characteristic
of the K3 (for me) is how quiet it is when you slip on the headphones.  The
K3 is distinctively quiet compared all the Icom, Yaesu and Kenwood radios I
own or have operated.  I now realize that all the pre-K3 radios I've used
were somehow amplifying or emphasizing the band noise, plus adding a bunch
of digital artifacts, in the audio.  I am completely stunned by the posts
here that report "noisy K3 receiver" and escaping to a "quieter" Japanese
radio.

I've been using K3s 11 and 17 ever since the field test units first came
out.  I've kept current with all the updates and mods so despite the early
serial numbers, these radios are equivalent to what is currently shipping.
I always have the latest field test firmware in both radios.  This is
pre-Beta and pre-production firmware that has never interfered with my use
of the radio.  I use the radios primarily for CW, RTTY and (rarely) SSB
contesting, plus a bit of DXing.  It took me a full month of using the K3 to
finally accept the fact that its receiver is so incredibly quiet compared to
any other radio.  I thought something was wrong!  And yet with the greatly
reduced band noise in the headphones, extremely weak signal are easy to
copy.  80 and 160 are like new bands, more like the higher bands, with my
K3s.  And the pile-up/crowded band receive capability is far superior to any
radio I've ever operated.

I'm not doubting the reports here on the reflector about "noisy K3
receiver", but I have to say that either the specific radio has a major
defect or the various gain and AGC controls are not setup correctly.  W4ZV
has posted on this reflector several excellent explanations on how to
properly adjust the K3, or any radio for that matter.  I would love to hear
one of these "noisy K3 receivers" and see how they are configured.

Ed - W0YK
---
Ed Muns
Muns Vineyard - www.munsvineyard.com 
FaceBook - www.facebook.com/munsvineyard

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] W2 trouble

[eric norris]

I'm using a W2 with two sensors, both HF-2KW.  I have the .92 firmware 
installed, and I've been using the new W2 app.  I am now getting some strange 
behavior with the W2.  First, sending QSK CW the lights keep flashing after 
I've stopped transmitting, fainter and fainter with each flash and fewer LEDs 
lighting up.  This "echo" looks very strange while sending CW.    I've tried 
changing every parameter in the W2 app but it does not help.  I've disconnected 
the serial cable at both ends, killed the app, it doesn't matter--I still get 
the echo, both at 100w and KW levels.   

Even worse, when I click on the SETTINGS tab in the W2 app the K3 starts 
randomly transmitting (its in CW mode, VOX on).  I don't see how this could be, 
unless it is a computer problem.  I am using a serial PCMCIA card that gives me 
COM13 and COM14--COM13 goes to the W2 and COM14 goes to the K3.  Any help?  

73, WD6DBM Eric    
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3 on VLF

[Leigh L. Klotz, Jr WA5ZNU]

Dave,
I ordered a Jackson Harbor VLF mixer based on this discussion started by 
Jack Smith K8ZOA:
http://n2.nabble.com/VLF-LF-Converters-td787815.html

I wrote up my results here:
"Receiving NDBs with the Jackson Harbor LF Converter ... Elecraft K3, 
LP-PAN, and Quisk"
http://wa5znu.org/2009/06/lfconv/

Jack has a number of modifications for the filters in the VLF converter; 
I ordered the parts for the new filter but (so far) have not switched 
over.  I was pleased with the results and copied a number of NDBs (best 
DX was Canada) and other beeps and boops that I had fun identifying.

Leigh/WA5ZNU
> I am a K3 owner and user. I have the KRX3 module installed. What do I
> need in order to hear  below 500 kHz? Or is this even possible for
> the K3? Currently, there is a great signal drop off when I tune below 1 mHz.
>
> Dave, W5UN
>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Noisy K3 receiver

[Bill W4ZV]

Ralph Parker wrote:
> 
> I'm used to leaving the RF gain wide open on the MkV, leaving the audio
> gain pretty much alone, and maybe switching between SLOW and FAST
> occasionally. I don't seem to have any trouble hearing the weak ones under
> the strong ones.
> Now I have to fiddle with the RF gain (a small knob hidden amongst the
> others) while running a pileup. Not enough hands (or enough brains).
> 

If you set up your K3 as you described above, I guarantee you will have a
noisy RX.  Furthermore, you are wasting the dynamic range of the K3 (or your
MkV for that matter).  In a previous post I described how to set up the K3. 
Once set up correctly, you should seldom need to touch either RF or AF gain
during an entire contest and can simply let the K3's excellent AGC and
dynamic range do the work for you.  IMHO good ergonomics doesn't mean having
access to 24 knobs that need to be continually adjusted, it means not having
to adjust them in the first place.

73,  Bill  W4ZV


-- 
View this message in context: 
http://n2.nabble.com/Noisy-K3-receiver-tp4184529p4184991.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] KPA100 problem / Update

[n0jrn]

OK,my new MAX1406's came in today.

I really made a point to check out every possible cause for the previous 
chip issues.

Installed the new MAX1406 and now have 122.1 V's at the junction of C77 and 
R11.   Also have a -22.4 V's at pin 8 of U4.

So,   the new chip fixed this issue

Now to move on to the next challenge.

Thanks to everybody for your suggestions and support.

73JerryN0JRN
- Original Message - 
From: "Don Wilhelm" 
To: "n0jrn" 
Sent: Monday, December 14, 2009 6:22 AM
Subject: Re: [Elecraft] KPA100 problem


> Jerry,
>
> I will take back what I said about U4 - it is faulty.
> That negative voltage is there only to allow the RS-232 drivers to produce 
> a negative level, the current draw should be minimal.
> The only thing U4 does is convert RS-232 levels to TTL levels and 
> vice-versa.

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: CW stutter

[Guy Olinger K2AV]

Turning the sub RX on and off is cycling a whole lot of things.  SO2x
operation in common practice uses something external to rig(s) to
switch/blend audio.  Wayne has something on the list about improving
SO2x operation, but you can bet it's not a cheap fix.  I think there
also was a reflector thread you can search for about a K3 "macro" that
one could use for selective muting/blending, which doesn't turn off
the SUB. There are some program commands that do something, and those
could be put in a macro assigned to a button on the front.

73, Guy.

On Thu, Dec 17, 2009 at 9:49 PM, Ralph Parker  wrote:
> I took #1823 through the SS CW and the 10m CW 'tests with reasonable results.
> I did notice that turning the SUB rx on/off while transmitting (getting
> ready for the next Q) caused the CW to 'stutter' (referred to as 'causes
> interuption of transmitted CW signal' in previous firmware notes re RIT
> on/off).
> I learned to wait until the K3 switched back to RCV mode before changing
> the SUB on/off mode, but it often wasn't convenient. Timing was critical to
> catch the returning station before he sent his exchange.
>
> Woulds't be possible to 'fix' this feature as well?
> Now that I'm learning SO2V, it would be a big help.
>
> VE7XF
>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] W2 Utility

[n4cw]

Thanks to K2AV, I solved my problem with calibrating my K3 TX output. The  
problem I was having was due to two things: first, I was using the owner's  
manual from August 2008 (when I got the rig)...the latest online version is  
quite different when it comes to TX calibration, and second, I found that 
the  length of coax between the K3 and the pickup made a BIG difference as 
the  frequency increased...changing to a 1-foot length made the difference! 
>From the  pickup to the dummy load, it's only a 1-foot length of RG-214. 
 
The help was appreciated. Quite an exercise in frustration!
 
Happy Holidays to all,
 
Bert, N4CW
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K3: CW stutter

[Ralph Parker]

I took #1823 through the SS CW and the 10m CW 'tests with reasonable results.
I did notice that turning the SUB rx on/off while transmitting (getting
ready for the next Q) caused the CW to 'stutter' (referred to as 'causes
interuption of transmitted CW signal' in previous firmware notes re RIT
on/off).
I learned to wait until the K3 switched back to RCV mode before changing
the SUB on/off mode, but it often wasn't convenient. Timing was critical to
catch the returning station before he sent his exchange.

Woulds't be possible to 'fix' this feature as well?
Now that I'm learning SO2V, it would be a big help.

VE7XF

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] W2 Utility

[NZ0T]

Brian, I don't see the peak hold on the computer display - will we see that
in a later version?

Brian Broggie-2 wrote:
> 
> Hi, Bill!
> 
> If you send the W2 a "P" via the W2 Utility (or the buttons on the W2 
> Interface program) the Peak-Hold LED should come back.  Sending the 
> command toggles the feature on/off with each "P".
> 
> 73,
> Brian, W6FVI
> Elecraft, Inc.
> 
> Bill K9YEQ wrote:
>> Bert, 
>>
>> I had the same issue.  I think when I restarted IE the browser cache
>> cleared
>> and then ok. But, until then I thought I had lost part of my brain (along
>> with the other parts!).  I have an issue here.  The peak hold no longer
>> works.  It was working and then quit.  I had been using QRO and when I
>> shut
>> down my K3 and then linked back up to the  W2 I could no longer get peak
>> power to work.  I have also had the KUSB fail on me as well, just out of
>> warranty, I have switched to RS232 port on my PC.  The KUSB failure seems
>> to
>> have messed with my ports so am trying to clean that up as well.  Nothing
>> unusual and not caused by Elecraft, but I am now ordering another 232 to
>> USB
>> converter.
>>
>>
>> 73,
>>
>> Bill
>> K9YEQ
>> K2 #35; KX1 #35; K3 #1744; mini mods
>> ATS-3B
>>
>>
>> -Original Message-
>> From: elecraft-boun...@mailman.qth.net
>> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of n...@aol.com
>> Sent: Thursday, December 17, 2009 7:24 PM
>> To: elecraft@mailman.qth.net
>> Subject: [Elecraft] W2 Utility
>>
>> Maybe I missed something here, but I really had to do some serious  
>> searching to find the W2 Utility so I could see the display on my
>> (Windows
>> XP)  
>> laptop. 
>> I eventually found it in /software/W2, but somehow I couldn't find a link  
>> in any of the official download windows! 
>> I was able to recalibrate my K3 power settings much more precisely, but  
>> much to my dismay, found the power output (100 Watt setting) dropped from
>> 17
>>
>> Meters on up. 6M showed output around 90 watts! I don't know where the 
>> "loss"  is, and it doesn't matter much to me since I use an amplifier on
>> all
>>
>> bands.  Maybe I'm expecting too much...
>>  
>> Bert, N4CW
>>  
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>>   
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> 
> 

-- 
View this message in context: 
http://n2.nabble.com/W2-Utility-tp4184516p4184808.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3 on VLF

[Wes Stewart]

Hi Dave,

You need a BC-453.

www.carc.org.uk/pdf/FavRx002.pdf

Wes

--- On Thu, 12/17/09, W5UN  wrote:


> I am a K3 owner and user. I have the
> KRX3 module installed. What do I 
> need in order to hear  below 500 kHz? Or is this even
> possible for 
> the K3? Currently, there is a great signal drop off when I
> tune below 1 mHz.
> 
> Dave, W5UN
> 



  
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K3 For Sale

[Bob]

Hi,

I have a pristine fully loaded K3 s/n 1513 that looks and smells new. Non
smoking home and always kept under a cover and unplugged when not in use.
The options are as follows:

K3/100
KAT3
KXV3
KRX3  (with 2.7k SSB Filter)
KDVR3
KTCXO3-1
KBPF3
KFL3A-6k
KFL3B-FM
KFL3A-2.8K

Please contact me directly with your offer or for further details, and NOT
via postings. I welcome the opportunity to chat with you on air, if we can
find propagation between us. I am on 10 through 160 (not 80). If you are
near the Windsor/Detroit area, you are welcome to come and operate it in
person. I am the original owner of this radio. If you email me  your name,
phone number and a good time to call, I would be happy to do that.

Thank you and Merry Christmas
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [OT] Kit Builder Question on Toroid Inductor Winding Wire

[Phil Hystad]

Thanks Jack and Don for your answers.  Just what I was looking for.

phil, K7PEH


On Dec 17, 2009, at 5:18 PM, Jack Smith wrote:

> Depends on the  volume you need. I recently bought several pounds total of 
> different colors and gauges at about one-third the price of Mouser or DigiKey 
> from James Whyte at magnetwire...@embarqmail.com
> 
> He also sells on E-bay or you can contact him directly for a quote on what 
> you need. It's all new wire from Essex and comes on spools. 
> 
> You want the type of insulation that is melted by the heat of soldering. It 
> goes by various names but generally is 155 deg C insulation, sometimes with a 
> overcoat which is known as type SPN.
> 
> Jack K8ZOA
> 
> 
> On 12/17/2009 7:47 PM, Phil Hystad wrote:
>> 
>> Since there are a lot of kit builders on this forum I have a question that 
>> maybe someone can answer.  What is the best "magnet" type wire for winding 
>> toroid style inductors.  By best, I mean the enamel insulation on the wire 
>> for ease of removal and soldering and so on.
>> 
>> And, do you have a source for such wire.
>> 
>> thanks,
>> phil, K7PEH
>> 
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> 
>>   

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3 on VLF

[David Olean]

Hi Dave,
You are out of luck below 490 kHz. Also, you need the general coverage 
board so that you can tune below 1.8 MHz. There is a bandpass filter that 
rolls off on the normal antenna jack, (for BCB protection)  but you can use 
the aux antenna jack on the KIO3 strip and get great sensitivity down thru 
the broadcast band. I am told that you can generate rf as well out of the 
transverter ports at 1 mw down to 500 kHz, but no luck with 137 kHz  with a 
stock radidio.  I use the K3 sometimes to listen to the broadcast band at 
night. It is very sensitive and selective.

73
Dave K1WHS
- Original Message - 
From: "W5UN" 
To: 
Sent: Friday, December 18, 2009 1:12 AM
Subject: [Elecraft] K3 on VLF


>I am a K3 owner and user. I have the KRX3 module installed. What do I
> need in order to hear  below 500 kHz? Or is this even possible for
> the K3? Currently, there is a great signal drop off when I tune below 1 
> mHz.
>
> Dave, W5UN
>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] W2 Utility

[Brian Broggie]

Hi, Bill!

If you send the W2 a "P" via the W2 Utility (or the buttons on the W2 
Interface program) the Peak-Hold LED should come back.  Sending the 
command toggles the feature on/off with each "P".

73,
Brian, W6FVI
Elecraft, Inc.

Bill K9YEQ wrote:
> Bert, 
>
> I had the same issue.  I think when I restarted IE the browser cache cleared
> and then ok. But, until then I thought I had lost part of my brain (along
> with the other parts!).  I have an issue here.  The peak hold no longer
> works.  It was working and then quit.  I had been using QRO and when I shut
> down my K3 and then linked back up to the  W2 I could no longer get peak
> power to work.  I have also had the KUSB fail on me as well, just out of
> warranty, I have switched to RS232 port on my PC.  The KUSB failure seems to
> have messed with my ports so am trying to clean that up as well.  Nothing
> unusual and not caused by Elecraft, but I am now ordering another 232 to USB
> converter.
>
>
> 73,
>
> Bill
> K9YEQ
> K2 #35; KX1 #35; K3 #1744; mini mods
> ATS-3B
>
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of n...@aol.com
> Sent: Thursday, December 17, 2009 7:24 PM
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] W2 Utility
>
> Maybe I missed something here, but I really had to do some serious  
> searching to find the W2 Utility so I could see the display on my (Windows
> XP)  
> laptop. 
> I eventually found it in /software/W2, but somehow I couldn't find a link  
> in any of the official download windows! 
> I was able to recalibrate my K3 power settings much more precisely, but  
> much to my dismay, found the power output (100 Watt setting) dropped from 17
>
> Meters on up. 6M showed output around 90 watts! I don't know where the 
> "loss"  is, and it doesn't matter much to me since I use an amplifier on all
>
> bands.  Maybe I'm expecting too much...
>  
> Bert, N4CW
>  
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>   
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] W2 Utility

[Bill K9YEQ]

Bert, 

I had the same issue.  I think when I restarted IE the browser cache cleared
and then ok. But, until then I thought I had lost part of my brain (along
with the other parts!).  I have an issue here.  The peak hold no longer
works.  It was working and then quit.  I had been using QRO and when I shut
down my K3 and then linked back up to the  W2 I could no longer get peak
power to work.  I have also had the KUSB fail on me as well, just out of
warranty, I have switched to RS232 port on my PC.  The KUSB failure seems to
have messed with my ports so am trying to clean that up as well.  Nothing
unusual and not caused by Elecraft, but I am now ordering another 232 to USB
converter.


73,

Bill
K9YEQ
K2 #35; KX1 #35; K3 #1744; mini mods
ATS-3B


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of n...@aol.com
Sent: Thursday, December 17, 2009 7:24 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] W2 Utility

Maybe I missed something here, but I really had to do some serious  
searching to find the W2 Utility so I could see the display on my (Windows
XP)  
laptop. 
I eventually found it in /software/W2, but somehow I couldn't find a link  
in any of the official download windows! 
I was able to recalibrate my K3 power settings much more precisely, but  
much to my dismay, found the power output (100 Watt setting) dropped from 17

Meters on up. 6M showed output around 90 watts! I don't know where the 
"loss"  is, and it doesn't matter much to me since I use an amplifier on all

bands.  Maybe I'm expecting too much...
 
Bert, N4CW
 
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Noisy K3 receiver

[Ralph Parker]

Disclaimer:
I admit that I'm a crochety old-timer, 55 years on the air on this coming
Friday, and have had many receivers/transcievers on the desk. I operate a
lot of contests, mostly CW. I spent 45 years recording sound, and think I
have a pretty good ear. I agree that the K3 has many fine features,
including an outstanding ability to eliminate QRM from stations outside my
passband, and  I've come to love the diversity feature, particularly on 160.

Now, about the noise:
>I have tried all the adjustments mentioned, but with no real improvement...

Me, too.
I've had #1823 for just over a year, and I still don't like the sound of
the receiver. That's the reason the K3 sat in a box for months while my
trusty FT-1000mkV sat on the operating desk (until the MkV went on strike
in the middle of the SS CW :-(

I have an antenna distribution system that grounds my antennas when they
are not in use. I installed the new K3 on the desk last year, but when I
turned off the antennas, the noise (hiss) from the (separate) speaker was
hardly reduced, whereas with the MkV, it went almost completely silent
(same speaker). Same thing with a headset. H.

I don't pay much attention to the S-meter on the K3 - it doesn't seem to
mean much to me, whereas I could use the S-meter on the MkV to judge
relative signal strengths of stations I heard, and keep an eye on the local
noises generated by the neighbours and the power company. I could put a
piece of tape over the meter (a'la Click & Clack) and not miss it much.

I have also been struggling with the AGC. I've looked at the suggested
settings posted by other owners, and tried to understand them, but to
almost no avail. Then I read "...the K3 "RF Gain" control ONLY controls the
IF gain - it does not reduce the gain of the receiver front end... The
preamp and attenuator DO change the front end gain." AHA! Maybe that's it!

I'm used to leaving the RF gain wide open on the MkV, leaving the audio
gain pretty much alone, and maybe switching between SLOW and FAST
occasionally. I don't seem to have any trouble hearing the weak ones under
the strong ones.
Now I have to fiddle with the RF gain (a small knob hidden amongst the
others) while running a pileup. Not enough hands (or enough brains).

I think I'll try the new 'DSP Rev.C' board and see if it helps the audio.
Hopefully, if I can then conquer the 'AGC settings' monster, I'll be more
comfortable with the radio.

I'd use the audio equalizer if there was a convenient way to turn it on/off
(maybe via PF-1). BTW, I don't expect the K3 to sound like a 'studio
recording' - I do know the difference.

And I'd like more gain from the speaker amp. I have CONFIG: AF GAIN set to
'low', and the AF gain control set to about 10:00 o'clock for comfortable
headset volume. When I pull the headset out, I have to increase the gain to
3:00 o'clock or greater. If I set CONFIG to 'high', there's way too much
gain for the headset. My speakers are reasonably efficient - Auritone 5Cs,
but I have tried many others.

Tnx for letting me vent. Am I getting too old? Should I take up knitting?
I'd be interested in hearing from other CW contesters.

VE7XF

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] W2 Utility

[n4cw]

Maybe I missed something here, but I really had to do some serious  
searching to find the W2 Utility so I could see the display on my (Windows XP)  
laptop. 
I eventually found it in /software/W2, but somehow I couldn't find a link  
in any of the official download windows! 
I was able to recalibrate my K3 power settings much more precisely, but  
much to my dismay, found the power output (100 Watt setting) dropped from 17  
Meters on up. 6M showed output around 90 watts! I don't know where the 
"loss"  is, and it doesn't matter much to me since I use an amplifier on all 
bands.  Maybe I'm expecting too much...
 
Bert, N4CW
 
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [OT] Kit Builder Question on Toroid Inductor Winding Wire

[Jack Smith]

Depends on the  volume you need. I recently bought several pounds total 
of different colors and gauges at about one-third the price of Mouser or 
DigiKey from James Whyte at magnetwire...@embarqmail.com

He also sells on E-bay or you can contact him directly for a quote on 
what you need. It's all new wire from Essex and comes on spools.

You want the type of insulation that is melted by the heat of soldering. 
It goes by various names but generally is 155 deg C insulation, 
sometimes with a overcoat which is known as type SPN.

Jack K8ZOA


On 12/17/2009 7:47 PM, Phil Hystad wrote:
> Since there are a lot of kit builders on this forum I have a question that 
> maybe someone can answer.  What is the best "magnet" type wire for winding 
> toroid style inductors.  By best, I mean the enamel insulation on the wire 
> for ease of removal and soldering and so on.
>
> And, do you have a source for such wire.
>
> thanks,
> phil, K7PEH
>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [OT] Kit Builder Question on Toroid Inductor Winding Wire

[Don Wilhelm]

Phil,

You want "Thermaleze" wire - it strips with heat.  One source is Doug 
Hendricks kits - http://www.qrpkits.com/.

73,
Don W3FPR

Phil Hystad wrote:
> Since there are a lot of kit builders on this forum I have a question that 
> maybe someone can answer.  What is the best "magnet" type wire for winding 
> toroid style inductors.  By best, I mean the enamel insulation on the wire 
> for ease of removal and soldering and so on.
>
> And, do you have a source for such wire.
>
> thanks,
> phil, K7PEH
>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> 
>
>
> No virus found in this incoming message.
> Checked by AVG - www.avg.com 
> Version: 9.0.716 / Virus Database: 270.14.111/2570 - Release Date: 12/17/09 
> 03:30:00
>
>   
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K3 on VLF

[W5UN]

I am a K3 owner and user. I have the KRX3 module installed. What do I 
need in order to hear  below 500 kHz? Or is this even possible for 
the K3? Currently, there is a great signal drop off when I tune below 1 mHz.

Dave, W5UN

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] [OT] Kit Builder Question on Toroid Inductor Winding Wire

[Phil Hystad]

Since there are a lot of kit builders on this forum I have a question that 
maybe someone can answer.  What is the best "magnet" type wire for winding 
toroid style inductors.  By best, I mean the enamel insulation on the wire for 
ease of removal and soldering and so on.

And, do you have a source for such wire.

thanks,
phil, K7PEH

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3 Rev C +AF filter

[David Lankshear]

I have one of the upgraded boards.

Mine is a rev B with some SMT component changes that achieves approximately the 
same result as W9AC's bass extension mods, although Elecraft seem not to have 
changed some of the capacitor values.  I think I read somewhere they were 
achieving the same result with altered resistor values instead.

There is also a small PCB holding one IC and a handful of SMT components that 
connects to the main PCB by six through connections.  I suspect there may be 
track cuts beneath it, but I've had no reason to investigate beneath the add-on 
PCB.  Yes, by the time shipping and return carriage for the return board, it is 
indeed expensive for those on this side of the pond.

After fitting the upgraded Rev. B DSP board, I turned my K3 on without an 
antenna connection and had one of those heart-in-mouth moments, because there 
was just silence instead of the usual hiss.  My RF gain was still set to fully 
clockwise and my AF gain was set to around 9 o'clock, but there was no hiss.  
After a couple of deep breaths, a few checks showed the K3 to be working, 
QUIETLY!

So, in summary, I have a Rev B board with no sticker to indicate it's a Rev. C 
board.  It has been upgraded with component changes to improve bass response 
and has a a small active LPF added to reduce hiss and high frequency artefacts. 
 Both mods do their jobs well in my opinion.

As I'm not afraid to use a soldering iron on a piece of expensive kit, had the 
LPF add-on board been available I would undoubtedly have fitted that myself, 
together with the W9AC mods.  The add-on PCB would survive the mail in a small 
Jiffybag and there would be no requirement to return the unmodified DSP board, 
but YMMV and in my case it serves to remind me that hindsight remains the only 
exact science.

I have already fitted the W9AC mods mods. to a friend's DSP board and it works 
as well as Elecraft's mods for enhanced LF audio.  If the LPF becomes available 
as an add-in kit, I shall most certainly fit one to my friend's K3 and 
hopefully it will save him a shower of bucks.

To those contemplating W9AC's mods, watch out.  The two 100uF 10v SMT 
electrolytics he specifies are 6.3mm diameter and are intended to replace two 
10uF components that are 5mm in diameter on a PCB designed to take 5mm SMTs.  I 
was unhappy with the cosmetics of fitting the larger electrolytics and 
eventually settled on using two SMT 100uF/10v tantalums, which fitted very 
nicely.  I note on the modified DSP board that Elecraft have used two 100uF 
6.3v electrolytics, which are 5mm diameter, so with hindsight, I'd have fitted 
those instead of the tants, which were some order of magnitude more expensive 
than the electrolytics.

73 and Season's Greetings to all.

DaveL  G3TJP

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [K3] Noisy K-3 Receiver

[Leigh L. Klotz Jr WA5ZNU]

KK7P wrote:
> 
> 
>> There is an often referred to AF filter module which installs on the 
>> main DSP board ...
> 
> My understanding is that this is part of the DSP board swap upgrade,  
> and is in currently shipping K3s.
> 
> But I've been known to be wrong!
> 
> 73,
> 
> Lyle KK7P
> 

The on-list descriptions of K3DSPUPGD say it changes a few capacitors and
other components to extend frequency response for TX and RX (in combination
with firmware) below 300 Hz, but has no effect on the line in/line out jacks
used by digimode programs.  Is that still the description?  

In other words, is this change mostly for ESSB and high-quality audio needs,
or is there some other advantage that might come about now our in the future
from having this board?  (Presumably with a KRX3 you need two of these and
that gets a little pricey for something with uncertain benefit.)

Leigh/WA5ZNU


-- 
View this message in context: 
http://n2.nabble.com/Noisy-K-3-Receiver-tp4173832p4184188.html
Sent from the [K3] mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3 Rev C +AF filter

[David Olean]

I have two K3s, one has  the new DSP board, so I hooked them up together and 
listened to low frequency tones. The higher SN radio definitely has more 
bass. In fact I have noted a few times, just how low it goes. It seemed very 
unusual for a communications radio to do that. So I listened to the older 
one and it has less bass, but to be honest, I don't see a problem with it. 
It sounds just fine to me. Now if it was my stereo FM receiver I would heave 
it out, but I chase DX with it and see no big reason to update it. I guess 
it is a personal decision for folks. I am using a Heil headset to make the 
comparison. I am almost 65 years old and my hearing is hosed on the high 
end. I am not sure if it is from the several decades of weak signal work, or 
having way too much fun in the 60's, but my upper limit is now a bit over 6 
or 8 kHz. I tune in CW at about 450-500 Hz.

Dave K1WHS

- Original Message - 
From: "Vic K2VCO" 
To: "k4pi" 
Cc: 
Sent: Thursday, December 17, 2009 9:43 PM
Subject: Re: [Elecraft] K3 Rev C +AF filter


> k4pi wrote:
>> I am anxious to see what the new board will do.  I have used QF1A for 
>> many
>> years and never found a radio yet where it did not enable me to copy 
>> signals
>> much better.  I treat my QF1As like gold and never operate without one in
>> the Peak mode.
>
> All the board changes do is improve low end response, which in my opinion 
> is already more
> than good enough for CW and SSB work.
>
> The 'filter' mentioned is not a peak or null filter, but just a lowpass 
> filter to remove
> some very high-pitched DSP artifacts that bother some operators.
>
> In my opinion, this replacement board is not something that everyone 
> needs. I will
> probably order the filter sub-board by itself when it becomes available 
> even though I'm
> probably too old to hear the DSP artifacts in question, but don't intend 
> to bother with
> replacing the DSP board.
> -- 
> 73,
> Vic, K2VCO
> Fresno CA
> http://www.qsl.net/k2vco
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3 audio filter board

[Greg - AB7R]

You can order the DSP swap from the K3 ordering page.

-
73,
Greg - AB7R
Whidbey Island WA
NA-065


On Thu Dec 17 14:43 , Ben Horton  sent:

>I, too, would like to know the answer to these questions
>
>N1LQ wrote:
>
>I too am wondering if the newer Rev. C DSP boards have the AF filter 
>board already installed on them.
>
>Also, it seems that quite a few folks here on the list have these AF 
>filter boards in hand and installed already. 
>
>How does one get in queue to receive one?
>
>Perhaps someone in Aptos can enlighten on these points?  Thanks.
>
>Seasons' Best to all.
>
>Thanks and Happy Holidays
>
>Ben   K5EX
>
>
>__
>Elecraft mailing list
>Home: http://mailman.qth.net/mailman/listinfo/elecraft
>Help: http://mailman.qth.net/mmfaq.htm
>Post: Elecraft@mailman.qth.net','','','')">Elecraft@mailman.qth.net
>
>This list hosted by: http://www.qsl.net
>Please help support this email list: http://www.qsl.net/donate.html


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Any K3 demo sites in northern NZ.

[Mike]

I am in Ahipara (near Kaitaia), but my K3 & all the rest of my station 
is still packed away after shifting QTH.
There are a couple of K3s in Whangarei (100km or so south of here). Tell 
him to check with the Whangarei branch of NZART - or direct to Peter 
Dent, zl1pwdthink that's his call & apologies for my memory Peter, 
if its wrong!

73 to all de Mike, zl1mh.
K3 #0215.
K2 #0681.
K2-100 #2681.
No virus found in this outgoing message.
Checked by AVG - www.avg.com
Version: 9.0.716 / Virus Database: 270.14.110/2568 - Release Date: 12/16/09 
21:02:00
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K3 audio filter board

[Ben Horton]

I, too, would like to know the answer to these questions

N1LQ wrote:

I too am wondering if the newer Rev. C DSP boards have the AF filter 
board already installed on them.

Also, it seems that quite a few folks here on the list have these AF 
filter boards in hand and installed already. 

How does one get in queue to receive one?

Perhaps someone in Aptos can enlighten on these points?  Thanks.

Seasons' Best to all.

Thanks and Happy Holidays

Ben   K5EX


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3 Rev C +AF filter

[Edward Dickinson, III]

One doesn't have to be a Hi-Fi enthusiast to be discomforted or fatigued by
distortion products and other artifacts, but perhaps being one is useful in
knowing the causes.  Not perceiving these in the conscious mind or otherwise
quantifying or qualifying them does not mean that a person is unaffected by
them.


73,
Dick - KA5KKT

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] [K3] K3 Rev C + AF Ffilter

[Corboy - Poteet]

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] STEREO SPEAKER OUT

[Karl Marderian]

N6XVT,
I am in need to the answer to this question myself. Not for my K3, but  
for my stereo Amp.. No hum, loss of singal. In this case it is hooked  
up to a preamp out. If the other amp is not on it cuts the volume.  
Must have something to do with line loading.


Sent from my iPhone

On Dec 17, 2009, at 12:30 PM, Richard Thorpe   
wrote:

> When I attach my K3, using stereo speakers out, to a set of powered
> speakers  noticeable hum occurs.  Also the powered speakers have two
> inputs, just plugging the K3 in, even though the K3 is not turned  on
> reduces the output volume from the other source by half.  Am I doing
> something wrong?
>
> R Thorpe KD6LAZ/AE
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [K3] K3 Rev C +AF filter

[Corboy - Poteet]

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [K3] K3 Rev C +AF filter

[Corboy - Poteet]

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K3 Amp keying

[Phil LaMarche]

I am going to key 3 amplifiers with my K3 using Amp Keyers.  Today I had a
cable company make me a Super High Quality Single RCA to Triple RCA splitter
for the K3 and amplifiers using the highest quality Belden double shielded
cable and color coded RCA connectors.  If any one is going to do the same
configuration for HF..50 and 144 amplifiers, I'll be happy to share the
information.
 
Phil
 

Philip LaMarche 
LaMarche Enterprises, Inc.
  www.instantgourmetspices.com

www.w9dvm.com   
800-395-7795 pin 02 
727-944-3226 
FAX 727-937-8834 
NASFT 30210 

K3  #1605

CCA 98  00827
CRA 1701

W9DVM 


 
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K3 audio filter board

[David and Dianne on Comcast]

I too am wondering if the newer Rev. C DSP boards have the AF filter 
board already installed on them.

Also, it seems that quite a few folks here on the list have these AF 
filter boards in hand and installed already. 

How does one get in queue to receive one?

Perhaps someone in Aptos can enlighten on these points?  Thanks.

Seasons' Best to all.

73 de N1LQ-Dave
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3 Rev C +AF filter

[Vic K2VCO]

k4pi wrote:
> I am anxious to see what the new board will do.  I have used QF1A for many 
> years and never found a radio yet where it did not enable me to copy signals 
> much better.  I treat my QF1As like gold and never operate without one in 
> the Peak mode.

All the board changes do is improve low end response, which in my opinion is 
already more 
than good enough for CW and SSB work.

The 'filter' mentioned is not a peak or null filter, but just a lowpass filter 
to remove 
some very high-pitched DSP artifacts that bother some operators.

In my opinion, this replacement board is not something that everyone needs. I 
will 
probably order the filter sub-board by itself when it becomes available even 
though I'm 
probably too old to hear the DSP artifacts in question, but don't intend to 
bother with 
replacing the DSP board.
-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K3 speakers

[K5NU]

Since I also restore old vintage stereo receivers, etc., I feed the audio 
from the K3 to a stereo amp/receiver and out to an old set of Yamaha 
speakers.  I have hi/lo cut filters, control of bass and treble and all 
needed volume.  Fills the room.  However, since I spend most of my time 
chasing dx on 80m, I wear my Bose noise canceling headphones with the NB and 
NR on in diversity mode, and hear very little but signals coming through.
I have never noticed the K3 being any noisier than any other radio.

Merry Christmas and HNY to all Ecrafters.

73,Mike K5NU 


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] I have joined the collective

[Ken Alexander]

Resistance is futile.
(don't know about reactance, though)


> Going even further back in Trekkie yore - you are now "Of
> the Body".
> 
> According to Landru anyway.
> 
> 
> Randy Hall wrote:
> > 
> > HI,
> > 
> > I just received my K3, SN2321 that I bought from Tom
> W0TOM.
> > 
> > I am looking forward to getting it setup and on the
> air.
> > 
> > Randy
> > K7AGE
> >
> __
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:Elecraft@mailman.qth.net
> > 
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> > 
> > 
> 
> -- 
> View this message in context: 
> http://n2.nabble.com/I-have-joined-the-collective-tp4182628p4182823.html
> Sent from the Elecraft mailing list archive at Nabble.com.
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Noisy K-3 Receiver

[Graham Kimbell (G3TCT)]

OK Don, well it must be controlling the gain of the first IF amp then, and
that must be important to the receiver's noise figure. All I know is that
turning down the RF gain reduces S/N (on my K3 at least). And this wasn't
the case in f/w 3.27.

Graham
- Original Message -
From: "Don Wilhelm" 
To: "Graham Kimbell (G3TCT)" 
Cc: "Elecraft reflector" 
Sent: Thursday, December 17, 2009 6:36 PM
Subject: Re: [Elecraft] Noisy K-3 Receiver


> Graham,
>
> BUT - the K3 "RF Gain" control ONLY controls the IF gain - it does not
> reduce the gain of the receiver front end - in that respect, the K3 is
> similar to those other receivers that you referred to..  The preamp and
> attenuator DO change the front end gain.
>
> 73,
> Don W3FPR
>
> Graham Kimbell (G3TCT) wrote:
> > This is a major irritation that has only surfaced with recent firmware
> > changes - the problem wasn't there in f/w 3.27. Other receivers I've
used
> > keep the S/N constant with the rf gain backed off presumably because
they
> > are reducing the IF gain further back in the rx.
> >
> >
> >

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] STEREO SPEAKER OUT

[Wayne Burdick]

Richard,

The K3's external speaker output requires a stereo plug. Also set  
CONFIG:SPKRS to 2.

Hum pickup is a very common problem with some powered speakers,  
regardless of what they're used with. You may be able to fix it with  
different cabling, moving the DC adapter, etc.

I recommend using non-powered speakers with the K3. It has plenty of  
drive, and this eliminates a few variables caused by powered speakers.

The speakers I use are from Best Buy: "Insignia, 4-inch, 3-way  
surround speakers"; same as the KLH Model 970A or other similar  
models. They're very inexpensive and sound great. Size: about 4"W x  
8"H x 4"D.

73,
Wayne
N6KR

On Dec 17, 2009, at 12:30 PM, Richard Thorpe wrote:

> When I attach my K3, using stereo speakers out, to a set of powered
> speakers  noticeable hum occurs.  Also the powered speakers have two
> inputs, just plugging the K3 in, even though the K3 is not turned  on
> reduces the output volume from the other source by half.  Am I doing
> something wrong?
>
> R Thorpe KD6LAZ/AE
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] STEREO SPEAKER OUT

[Richard Thorpe]

When I attach my K3, using stereo speakers out, to a set of powered  
speakers  noticeable hum occurs.  Also the powered speakers have two  
inputs, just plugging the K3 in, even though the K3 is not turned  on  
reduces the output volume from the other source by half.  Am I doing  
something wrong?

R Thorpe KD6LAZ/AE
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [K2] K2 "Aurora noise"

[Lennart]

This is just feedback to the forum. Thanks to all good feedback I got I found
resistor r25 in PLL without proper solder connection in just a few hours. As
I was recommended towards the PLL area I looked around with a good lamp and
a magnifying glass. I was able to "wiggle" the resistor and get the noise
back. After resoldering R25 the radio has been performing very well. 
Thanks everyone!
73 de SM6KNL
-- 
View this message in context: 
http://n2.nabble.com/K2-Aurora-noice-tp4134494p4183283.html
Sent from the [K2] mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Why K3 appears noisy?

[K2MK]

Hi Wes:

I took a look at the RF Gain Calibration on the K3 Utility and they offer 
two ways of doing it. One requires a signal generator and one uses factory 
default values. Is the factory default method satisfactory or is it 
necessary for us to purchase the XG2 to do the calibration properly.

Thanks,
Mike K2MK


Wes Stewart
Thu, 17 Dec 2009 09:34:56 -0800

I believe I've written about this before, at least to a few, but perhaps it
bears repeating. I have done a side-by-side comparison of my K3 with another 
K3
when "RF" (actually IF) gain was reduced with the AGC on.

With my radio, tuned to a S9+50 dB BC station, even a slight decrease in 
gain
was met by a large *decrease* in SNR.  On the other this wasn't the case.

IMHO, this results from the wide differences in the volts v. dB 
characteristic
of the gain-controlled hardware, i.e. the FET/diode post crystal filter
amplifier, from radio to radio.  This is why one guy can write, "SNR is
improved when I reduce RF Gain" and another can say, "SNR goes to pot when I
reduce RF Gain."  Both can be correct, depending on their hardware.

It's not new knowledge that we want to delay the application of AGC to early
stages in the radio so as to maintain SNR. But in this radio, one size of 
delay
doesn't fit all.

The RF gain "calibration" is an attempt to fix in firmware what is 
essentially
a hardware problem and Lyle has done an excellent job doing this.  If I
understand correctly, (always a dubious proposition) he measures the gain v.
volts of the FET amplifier and applies this new found correction to the gain
control partitioning.

This has made a remarkable difference in my radio, which must be a real
outlier.  Still, and this is conjecture, I have this nagging concern that 
there
might be some latency in the process and under highly dynamic conditions, it
"doesn't keep up."

Wes  N7WS

 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3 audio filter board

[pd0psb]

The K3 became a different radio after the modification that I am quite
pleased with. One of the problems we have is that no one who works at K3 can
apparently hear the problem, thus no hurry or they think we are crazy.


Mike,

The problem is that meanwhile there is a lot of mix-up going on between
hamradio and "hifi" enthusiasm. I've always seperated those but some don't.
A lot of hamshacks are now filled with (semi) pro audio gear that is used
for 10db s/nr SSB channels :-)

Because of this mix-up it is hard for Elecraft to seperate *serious* audio
flaws from complaints about K3's not sounding like studio recordings.

The LPF board works wonderful in clearing out the last artifacts from DA
conversion (and I think should become a regular upgrade) In the hamradio
SDR/AD-DA era we encounter the same problems as in the first consumer
digital audio products. This will clear out over time ;-)
The K3 has room for those improvements where other radios are "fixed" by
current knowledge...

73'
Paul
PD0PSB









-- 
View this message in context: 
http://n2.nabble.com/K3-audio-filter-board-tp4182121p4183015.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3 Rev C +AF filter

[Edward Dickinson, III]

Does the DSP Board swap change anything other than the audio chain, and is
that for headphones only?


73,
Dick - KA5KKT

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [K2] Elecraft W2 Interface Software Strange behaviour

[David Fleming]

Hi Richard,

Yes, we are aware of the problem and it will be corrected in a forthcoming 
firmware update. For now, set PWR(ser) to PEP. That should help.

tnx,

David, W4SMT

--- On Thu, 12/17/09, Richard Squire - HB9ANM  wrote:

> The new software is really cool. It is now permanently on
> my screen and works
> nicely.
> A minor issue which will certainly be corrected in the
> future is than when
> transmitting at 20 W (which happens to be what the TUNE PWR
> on my K3 is
> adjusted to), the display jumps to 276...318 W and then
> settles down to 20
> W. Tweaking the power around 20 W repeatedly sends it to
> such values,
> anything between 19 and 22 W with result in such
> unrealistic values - which
> then remain on display until I leave that range. This
> occurs whatever the
> range is set to and with or without AUTO mode, Not a big
> concern as
> otherwise everything is fine but I wonder whether anyone
> else noticed this? 
> -
> Richard - HB9ANM

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] I have joined the collective

[NZ0T]

Going even further back in Trekkie yore - you are now "Of the Body".

According to Landru anyway.


Randy Hall wrote:
> 
> HI,
> 
> I just received my K3, SN2321 that I bought from Tom W0TOM.
> 
> I am looking forward to getting it setup and on the air.
> 
> Randy
> K7AGE
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> 
> 

-- 
View this message in context: 
http://n2.nabble.com/I-have-joined-the-collective-tp4182628p4182823.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [K2] Elecraft W2 Interface Software Strange behaviour

[Richard Squire - HB9ANM]

The new software is really cool. It is now permanently on my screen and works
nicely.
A minor issue which will certainly be corrected in the future is than when
transmitting at 20 W (which happens to be what the TUNE PWR on my K3 is
adjusted to), the display jumps to 276...318 W and then settles down to 20
W. Tweaking the power around 20 W repeatedly sends it to such values,
anything between 19 and 22 W with result in such unrealistic values - which
then remain on display until I leave that range. This occurs whatever the
range is set to and with or without AUTO mode, Not a big concern as
otherwise everything is fine but I wonder whether anyone else noticed this?



-
Richard - HB9ANM
-- 
View this message in context: 
http://n2.nabble.com/Elecraft-W2-Interface-Software-now-available-tp4179339p4182776.html
Sent from the [K2] mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Noisy K-3 Receiver

[Don Wilhelm]

Graham,

BUT - the K3 "RF Gain" control ONLY controls the IF gain - it does not 
reduce the gain of the receiver front end - in that respect, the K3 is 
similar to those other receivers that you referred to..  The preamp and 
attenuator DO change the front end gain.

73,
Don W3FPR

Graham Kimbell (G3TCT) wrote:
> This is a major irritation that has only surfaced with recent firmware
> changes - the problem wasn't there in f/w 3.27. Other receivers I've used
> keep the S/N constant with the rf gain backed off presumably because they
> are reducing the IF gain further back in the rx.
>
>   
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K3 Rev C +AF filter

[k4pi]

I am anxious to see what the new board will do.  I have used QF1A for many 
years and never found a radio yet where it did not enable me to copy signals 
much better.  I treat my QF1As like gold and never operate without one in 
the Peak mode.
73 Mike K4PI 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] I have joined the collective

[Randy Hall]

HI,

I just received my K3, SN2321 that I bought from Tom W0TOM.

I am looking forward to getting it setup and on the air.

Randy
K7AGE
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] W2 Interface Software

[W0SD Ed Gray]

Making the window on top optional would be the best of both worlds.  I 
have some very important reasons why I want to be able to

see the W2 window all the time.

Let me provide a little back ground here which I am sure will apply to a 
number of you. First of all can you see your amplifier meters when you 
operate? Can you see your power and SWR? Obviously I think all of us 
would like to but in some cases it is physically impossible to see the 
amplifier meters and it can really be a hassle to see the watt meter. I 
have one amplifier I have to turn around to see it. I can see it when I 
tune up but not when I operate unless I turn around.  Some people have 
amplifiers mounted a long ways away and just use them on one band so 
they don't have to tune them all the time and of course there are a few 
auto tune amplifiers. Actually with a lot of amplifiers once you know 
the setting you can just dial them up.  One can do remote metering but 
that can be a major project and require hacking into a unit. It is even 
quite an expense and project to remote a wattmeter until the W2 came along.


To try and keep track of what is going on with the amplifier and 
antenna's I found out early on I at least want to see a watt meter right 
where I operate. I have several Bird watt meters so I got things set up 
so I can remote one of them with the meter away from the thru-line.  
That works but then you are stuck with whatever slug you have in it and 
you are either forward or reverse. I end up running around to get at the 
thru-line and changing between the low and high power slugs and also 
turning it for forward and reflected.  Definitely not a good deal in a 
contest and a nuisance at other times.


There are dual line Birds where you can look at forward and reverse but 
now we are talking some . You also have to find room for two meters. 
I was going to do this and then I seen the W2 which is a much better 
solution as it is all right where you can see the remote unit. Now I 
have various power levels for the exciter or amplifier and at the same 
time reflected power, a peak reading watt meter and a number of other 
features.


Now add the W2 software and you greatly enhance the W2 of which I 
detailed some of the enhancements in another post. Anyway I need to 
monitor what is going on all the time so I need to keep the W2 window 
up. As I said making it optional would be the best of both worlds so 
people who don't want it up all the time do not have to.




No virus found in this outgoing message.
Checked by AVG - www.avg.com
Version: 8.5.427 / Virus Database: 270.14.111/2570 - Release Date: 12/17/09 
08:30:00
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] W2 Interface Software

[David Fleming]

The Mac version is WAY prettier than the Windoze version. That alone is a great 
reason for everyone to buy a MacBook Pro. (not trying to start a religious 
war). :-)

David, W4SMT

--- On Thu, 12/17/09, David Ferrington, M0XDF  wrote:

> OK, thanks David, sorry, must admit I
> didn't look since I haven't got one yet.

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Why K3 appears noisy?

[Wes Stewart]

I believe I've written about this before, at least to a few, but perhaps it 
bears repeating. I have done a side-by-side comparison of my K3 with another K3 
when "RF" (actually IF) gain was reduced with the AGC on.

With my radio, tuned to a S9+50 dB BC station, even a slight decrease in gain 
was met by a large *decrease* in SNR.  On the other this wasn't the case.

IMHO, this results from the wide differences in the volts v. dB characteristic 
of the gain-controlled hardware, i.e. the FET/diode post crystal filter 
amplifier, from radio to radio.  This is why one guy can write, "SNR is 
improved when I reduce RF Gain" and another can say, "SNR goes to pot when I 
reduce RF Gain."  Both can be correct, depending on their hardware.

It's not new knowledge that we want to delay the application of AGC to early 
stages in the radio so as to maintain SNR. But in this radio, one size of delay 
doesn't fit all.

The RF gain "calibration" is an attempt to fix in firmware what is essentially 
a hardware problem and Lyle has done an excellent job doing this.  If I 
understand correctly, (always a dubious proposition) he measures the gain v. 
volts of the FET amplifier and applies this new found correction to the gain 
control partitioning.

This has made a remarkable difference in my radio, which must be a real 
outlier.  Still, and this is conjecture, I have this nagging concern that there 
might be some latency in the process and under highly dynamic conditions, it 
"doesn't keep up."

Wes  N7WS


--- On Thu, 12/17/09, Ignacy  wrote:

> 2. Gain distribution under RF gain. RF gain under AGC does
> not reduce noise
> as much as with AGC off. The reduction with AGC on seems to
> affect the first
> stages first. So for a large decrease of RF gain the noise
> reduction is not
> as strong. Try listening to the same station with AGC off
> and AGC on while
> adjusting RF Gain.  On the same note, the audio sounds
> beautiful on strong
> stations with large AGC hold but there is lots of noise
> when the station
> goes off. 
> 
> 3. AF distortions as documented by UR5LAM in
> http://ur5lam.jimdo.com/elecraft-k3-mod-s-page/
> These may fixed with the new DSP board. Partially as UR5LAM
> also applied
> fixes to mixers and IF amp.  found a few other fixes
> necessary.  
> 
> The simplest fixes IMHO would be to extend the range of AGC
> THR, and then
> make RF gain behave similarly with AGC on and off. I
> noticed a large
> improvement after RF calib. For (3), a separate EQ setting
> per mode would
> help (if not already done).
> 
> The noise is an issue important if K3 is marketed to
> everyone. Like most in
> this group, I find K3 highly superior to other radios in
> contesting and
> DX'ing. 
> 
> Ignacy, NO9E
>



  
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] W2 Sensor Cable - Max Length?

[Bill]

A few questions...

What is the max length of cable between the W2 and sensor?

It looks like the cable is CAT5 or CAT6 Ethernet cable, true?

THX!

73, Bill   N2BC

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Noisy K-3 Receiver

[Graham Kimbell (G3TCT)]

This statement (If you run RF GAIN wide open the receiver will sound noisy
and you are limiting your dynamic range)  is only true for the bands where
the
band noise is high, but on the higher bands (eg 6m), the band noise is only
a little higher than the receiver noise (and maybe not at all if you don't
have an external preamp).

And on my K3 (as reported previously with f/w 3.63) backing off the rf gain
*reduces* the S/N because the front end noise no longer overcomes the IF/AF
noise. There's lots of noise generated in the later stages of the rx, which
can still be
heard with the rf gain backed off.  This does not appear to be a function of
the AGC settings.

This is a major irritation that has only surfaced with recent firmware
changes - the problem wasn't there in f/w 3.27. Other receivers I've used
keep the S/N constant with the rf gain backed off presumably because they
are reducing the IF gain further back in the rx.

And let's be clear I'm NOT talking about 160 or 80m where the band noise may
be many dB above the receiver front end noise.

Graham
---
Previous comments include:-
> If you run RF GAIN wide open the receiver will sound noisy and you are
limiting your dynamic range.

and

>I find it hard to believe that the K3 receiver is actually noisy, in the
sense that it is generating noise internally that makes it harder to hear
weak signals compared to another RX. Those MDS figures can't lie, surely?

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] W2 Interface Software

[David Ferrington, M0XDF]

OK, thanks David, sorry, must admit I didn't look since I haven't got  
one yet.
-- 
There are three truths: my truth, your truth, and the truth.
-Chinese proverb

On 17 Dec 2009, at 17:09, David Fleming wrote:

> Hey Dave,
>
> There IS an OSX version.
>
> http://www.elecraft.com/software/W2/elecraft_w2_software.htm
>
> David, W4SMT
>
> --- On Thu, 12/17/09, David Ferrington, M0XDF  
>  wrote:
>
>> Any chance of this making it to OSX?
>> I'd like to run a W2 sometime too.
>> 73 de M0XDF, K3 #174
>

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] W2 Interface Software

[David Fleming]

Hey Dave,

There IS an OSX version.

http://www.elecraft.com/software/W2/elecraft_w2_software.htm

David, W4SMT

--- On Thu, 12/17/09, David Ferrington, M0XDF  wrote:

> Any chance of this making it to OSX?
> I'd like to run a W2 sometime too.
> 73 de M0XDF, K3 #174

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] W2 Interface Software

[David Ferrington, M0XDF]

Any chance of this making it to OSX? I'd like to run a W2 sometime too.
73 de M0XDF, K3 #174
--  
The universe is like a safe to which there is a combination. But the
combination is locked up in the safe.
-Peter De Vries, editor, novelist (1910-1993)

On 17 Dec 2009, at 17:01, David Fleming wrote:

> I could make the W2 software window a "Floating" style window. That  
> is, it would stay "on top" all the time. But I personally do not  
> like floating windows. They become irritating to me after a while.  
> Perhaps I could make it optional. I'll look into it.
>
> David, W4SMT
>
> --- On Thu, 12/17/09, W0SD Ed Gray  wrote:
>
>> From: W0SD Ed Gray 
>> Subject: Re: [Elecraft] [K2]  Elecraft W2 Interface Software now  
>> available.
>> To: elecraft@mailman.qth.net
>> Date: Thursday, December 17, 2009, 11:54 AM
>> What I am going to try first is to
>> make a space for it by reducing the size of my logging
>> program window.  There may be a way in our Windows
>> program(XP in my case) to make it stay on top but like you I
>> don't know how to do this. Hopefully someone on here can
>> help us with that.
>>
>> On 12/17/2009 10:46 AM, NZ0T wrote:
>>> Very, very cool!  I can leave the window up with
>> my logging program.  Seeing
>>> forward and reflected power digitally is a great
>> improvement.  Now if I can
>>> just figure out if there is a way I can get the W2
>> window to stay whenever I
>>> input to the logging program - anyone know how to
>> that? I'm a computer
>>> illiterate.
>>> 73 Bill NZ0T

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] W2 Interface Software

[David Fleming]

I could make the W2 software window a "Floating" style window. That is, it 
would stay "on top" all the time. But I personally do not like floating 
windows. They become irritating to me after a while. Perhaps I could make it 
optional. I'll look into it.

David, W4SMT

--- On Thu, 12/17/09, W0SD Ed Gray  wrote:

> From: W0SD Ed Gray 
> Subject: Re: [Elecraft] [K2]  Elecraft W2 Interface Software now available.
> To: elecraft@mailman.qth.net
> Date: Thursday, December 17, 2009, 11:54 AM
> What I am going to try first is to
> make a space for it by reducing the size of my logging
> program window.  There may be a way in our Windows
> program(XP in my case) to make it stay on top but like you I
> don't know how to do this. Hopefully someone on here can
> help us with that.
> 
> On 12/17/2009 10:46 AM, NZ0T wrote:
> > Very, very cool!  I can leave the window up with
> my logging program.  Seeing
> > forward and reflected power digitally is a great
> improvement.  Now if I can
> > just figure out if there is a way I can get the W2
> window to stay whenever I
> > input to the logging program - anyone know how to
> that? I'm a computer
> > illiterate.
> > 73 Bill NZ0T
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [K2] Elecraft W2 Interface Software now available.

[W0SD Ed Gray]

What I am going to try first is to make a space for it by reducing the 
size of my logging program window.  There may be a way in our Windows 
program(XP in my case) to make it stay on top but like you I don't know 
how to do this. Hopefully someone on here can help us with that.


On 12/17/2009 10:46 AM, NZ0T wrote:

Very, very cool!  I can leave the window up with my logging program.  Seeing
forward and reflected power digitally is a great improvement.  Now if I can
just figure out if there is a way I can get the W2 window to stay whenever I
input to the logging program - anyone know how to that? I'm a computer
illiterate.
73 Bill NZ0T
   


No virus found in this outgoing message.
Checked by AVG - www.avg.com
Version: 8.5.427 / Virus Database: 270.14.111/2570 - Release Date: 12/17/09 
08:30:00
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [K2] Elecraft W2 Interface Software now available.

[NZ0T]

Very, very cool!  I can leave the window up with my logging program.  Seeing
forward and reflected power digitally is a great improvement.  Now if I can
just figure out if there is a way I can get the W2 window to stay whenever I
input to the logging program - anyone know how to that? I'm a computer
illiterate.
73 Bill NZ0T

Brian Broggie wrote:
> 
> Now available on the Elecraft website (in Software/W2) is the "Elecraft 
> W2 Interface" for both Windows and Mac.
> 
> David Fleming, W4SMT, has written a cool program that has:
> 
> * bargraph displays of Forward power, Reflected power, and SWR,
> * the actual numeric values from the W2,
> * front panel buttons for easily changing W2 display settings and
>   Sensor Calibration,
> * and of course, much more.
> 
> Please try them with your W2.  Let us know how you like it.
> 
> 73,
> Brian, W6FVI
> Elecraft, Inc.
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> 
> 

-- 
View this message in context: 
http://n2.nabble.com/Elecraft-W2-Interface-Software-now-available-tp4179339p4182196.html
Sent from the [K2] mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Noisy Receiver? - not here!

[Duncan Carter]

Rob Sherwood, NC0B, of Sherwood Engineering says that all of the 
receivers with dsp made since roughly 2000 except for the K3 and one 
other have agc that is excessively responsive to fast ( narrow width in 
the time domain) noise impulse noises.  According to him, these impulses 
charge the agc excessively, thus quieting their receivers in an 
undesirable manner.  If the repetition rate of the pulses is low enough, 
this results in "pumping" of the agc, if the repetiton rate is higher, 
this might result in apparent quieting of the receiver. 

Mabe Rob will read this and comment.

73, Dunc, W5DC

Julian, G4ILO wrote:
> Jorge Diez - CX6VM wrote:
>   
>> Hello Hector,
>>
>> What´s about this W9AC mod?  Why do you need it and why not the radio have
>> this feature done from the Elecraft company if the radio will be better
>> with
>> this mod?
>>
>> I hope to not need to do mods on the K3.!
>>
>> I have an old TS850 with many mods, but my idea for a new radio is to be
>> great from the company that made them and no need to do MODS on it!...
>>
>>
>> 
>
> Just Google "W9AC Hardware Mod" and you will find the information here:
> http://n1eu.com/K3/k3audiomod.htm . I don't know if it is the same mod as
> now on the updated DSP board but the author states that "Elecraft may offer
> a replacement board for those who don't wish to make the mod" so I am
> guessing that it is.
>
> Most products evolve and improve over their lifetime. With some products you
> would probably never know about this unless you studiously compare the
> schematics of different versions.
>
> There are two ways of looking at this. You can think that it is good the
> information about these mods is out in the open giving you the opportunity
> to update your K3 if you wish. Or you can think it bad that these mods
> needed to be made at all.
>
> I don't think they *needed* to be made, because people were happy with the
> K3 without these mods. They are just improvements. My K3 #222 still works as
> well as it always did. It may not work quite as well as the ones coming out
> of the factory now, but the only way to avoid that problem is never to buy
> anything until just before it becomes obsolete...
>
>
> -
> Julian, G4ILO. K2 #392  K3 #222.
> * G4ILO's Shack - http://www.g4ilo.com
> * KComm - http://www.g4ilo.com/kcomm.html
> * KTune - http://www.g4ilo.com/ktune.html
>
>   

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K3 audio filter board

[Mike Scott]

In the past I complained about harsh receiver audio characteristics similar
to some of the audio characteristics being posted recently. It got to the
point that I stopped operating as the listener fatigue was so apparent. The
effect seemed to be most apparent at CW filter bandwidths. I am apparently
sensitive to something that was present, either high frequency trash or 3rd
harmonic distortion. I have external rat shack book shelf speakers. 

If you google audio fatigue you will eventually find that with some people
even a tiny bit of 3rd order harmonic distortion can cause audio fatigue, 60
or 70 dB down.

I have installed a beta version audio frequency low pass filter. It involved
cutting two traces and soldering in a very small board that contains two SMT
low pass filters for the two audio channels. The new board matches up with
appropriate tie points on the DSP board (I think it was DSP anyway) for
power, ground, two input and two output channels. I had to clear out some
vias that were supposed to be solder-free but which were not on my K3.
Except for clearing the vias the modification was straight forward. I should
have remembered that a stainless steel needle pushed into a via after
melting the solder with a soldering iron is the magic trick. 

The K3 became a different radio after the modification that I am quite
pleased with. One of the problems we have is that no one who works at K3 can
apparently hear the problem, thus no hurry or they think we are crazy.

Mike Scott - AE6WA
Tarzana, CA (DM04 / near LA)
NAQCC 3535
K3-100 #508 / KX1  #1311


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [K3] K3 Rev C +AF filter

[Don Wilhelm]

James,

The audio path for the sub is on the main DSP board - the change is not 
in the DSP itself, but in the audio path.

73,
Don W3FPR

James Sarte wrote:
> Hi Bill,
>
> I'm sure I'm not grasping this concept well, but what about the sub receiver
> then?  
>
> 73 James
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bill W4ZV
> Sent: Thursday, December 17, 2009 10:24 AM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] [K3] K3 Rev C +AF filter
>
>
>
>
> K2QI wrote:
>   
>> That's a good question, and something I'd like to know as well.  I'm
>> assuming that in order to keep both receivers identical in performance,
>> both
>> DSP boards will have to be swapped out.  I'm also assuming that the
>> replacement cost will be doubled.  Please correct me if I'm mistaken.
>>
>> 
>
> You are mistaken...only the main DSP board needs to be changed.
>
> 73,  Bill
>
>   
> 
>
>
> No virus found in this incoming message.
> Checked by AVG - www.avg.com 
> Version: 9.0.716 / Virus Database: 270.14.111/2570 - Release Date: 12/17/09 
> 03:30:00
>
>   
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Lilliput 7" monitor/SDR-IQ/K3

[Jim Spears]

Thanks to the person who first mentioned the Lilliput monitor and to Joe,
W4TV, for suggesting that the Spectravue display fits very well onto the
800x480 WVGA resolution (with the monitor horizontal).  This is a super
clean combination when used with a K3 (of course).  Photo on request.  

 

Jim

N1NK

K3/100 #2295

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [K3] K3 Rev C +AF filter

[Jim Miller KG0KP]

OK, that helps a lot.  I thought I would have to buy TWO new dsp boards, 
guess I missed any previous comments to the contrary.

Thanks, Jim KG0KP

- Original Message - 
From: "Paul Christensen" 
To: 
Sent: Thursday, December 17, 2009 9:24 AM
Subject: Re: [Elecraft] [K3] K3 Rev C +AF filter


>> Thanks for the info. But since there is allegedly no such thing as a
>> stupid
>> question, may I ask whether only the main DSP board should be replaced.
>
> The Main DSP board routes the sub Rx audio and so, there's no reason for a
> sub DSP board replacement.
>
> Paul, W9AC
>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> 


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [K3] K3 Rev C +AF filter

[James Sarte]

Hi Bill,

I'm sure I'm not grasping this concept well, but what about the sub receiver
then?  

73 James

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bill W4ZV
Sent: Thursday, December 17, 2009 10:24 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] K3 Rev C +AF filter




K2QI wrote:
> 
> That's a good question, and something I'd like to know as well.  I'm
> assuming that in order to keep both receivers identical in performance,
> both
> DSP boards will have to be swapped out.  I'm also assuming that the
> replacement cost will be doubled.  Please correct me if I'm mistaken.
> 

You are mistaken...only the main DSP board needs to be changed.

73,  Bill

-- 
View this message in context:
http://n2.nabble.com/K3-Rev-C-AF-filter-tp4179228p4181774.html
Sent from the [K3] mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [K3] K3 Rev C +AF filter

[Paul Christensen]

> Thanks for the info. But since there is allegedly no such thing as a 
> stupid
> question, may I ask whether only the main DSP board should be replaced.

The Main DSP board routes the sub Rx audio and so, there's no reason for a 
sub DSP board replacement.

Paul, W9AC

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [K3] K3 Rev C +AF filter

[Bill W4ZV]

K2QI wrote:
> 
> That's a good question, and something I'd like to know as well.  I'm
> assuming that in order to keep both receivers identical in performance,
> both
> DSP boards will have to be swapped out.  I'm also assuming that the
> replacement cost will be doubled.  Please correct me if I'm mistaken.
> 

You are mistaken...only the main DSP board needs to be changed.

73,  Bill

-- 
View this message in context: 
http://n2.nabble.com/K3-Rev-C-AF-filter-tp4179228p4181774.html
Sent from the [K3] mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Noisy K-3 Receiver

[Paul Christensen]

If it's weak signal work where this is being noticed, one test of the 
overall noise floor is to run the headphone output from several rigs, 
individually switched into a PC sound card with a FFT software program 
running.  The AF outputs would require normalizing at various 
signal-strength levels across receivers with say a 1 kHz tone for wider 
bandwidths and perhaps 500 Hz tone for narrower modes.  For SSB, 1 kHz 
should represent an area of the IF and AF passband where minimal attenuation 
occurs for any receiver. Even if the IF selectivity is not identical across 
the receivers, the FFT software will still produce some meaningful results. 
The test should include AGC on and AGC off settings.

Paul, W9AC

- Original Message - 
From: "Jim McCook" 
To: 
Sent: Thursday, December 17, 2009 10:06 AM
Subject: Re: [Elecraft] Noisy K-3 Receiver


> Juergen and others.
>
> I'm glad to see this thread get so much attention; it's about time this
> issue was brought into focus.  In spite of my huge appreciation for this
> radio, I find it to be very noisy and fatiguing to listen to, especially
> with weak signals.
>
> I have, like others, tried all the adjustments mentioned, but with no
> real improvement.  I can switch to my FT-1000D for relief when this gets
> to the point of being difficult.  I find myself doing this more and more
> often.  I used the K-3 in CQWW SSB and CW, and enjoyed the great
> features and ease of use, especially using the N1MM settings to access
> the KDVR audio during the SSB contest.  But... all these great features
> have come at some cost dealing with the receiver noise.  Even the EQ
> settings are a tradeoff because the noise follows boost in the low range
> for CW (I listen at 350hz).  We still need separate EQ settings for SSB,
> too.
>
> I'm also wondering if the DSP board upgrade for low range will help to
> solve some of this problem
>
> The RX MIX audio arrangement in the FT-1000D is still far superior to
> the K-3, also.  The newest options for this helped, but the Yaesu is
> still better in dual receiving mode with the balance control.
>
> Jim
> W6YA
>
>
>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Why K3 appears noisy?

[Ignacy]

Rather than debate whether K3 is noisy I suggest to debate why it appears so
to many. Then it can lead to fixes. Below are a few hypotheses.

1. Highest AGC threshold is too low.  

2. Gain distribution under RF gain. RF gain under AGC does not reduce noise
as much as with AGC off. The reduction with AGC on seems to affect the first
stages first. So for a large decrease of RF gain the noise reduction is not
as strong. Try listening to the same station with AGC off and AGC on while
adjusting RF Gain.  On the same note, the audio sounds beautiful on strong
stations with large AGC hold but there is lots of noise when the station
goes off. 

3. AF distortions as documented by UR5LAM in
http://ur5lam.jimdo.com/elecraft-k3-mod-s-page/
These may fixed with the new DSP board. Partially as UR5LAM also applied
fixes to mixers and IF amp.  found a few other fixes necessary.  

The simplest fixes IMHO would be to extend the range of AGC THR, and then
make RF gain behave similarly with AGC on and off. I noticed a large
improvement after RF calib. For (3), a separate EQ setting per mode would
help (if not already done).

The noise is an issue important if K3 is marketed to everyone. Like most in
this group, I find K3 highly superior to other radios in contesting and
DX'ing. 

Ignacy, NO9E
-- 
View this message in context: 
http://n2.nabble.com/Why-K3-appears-noisy-tp4181768p4181768.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [K3] K3 Rev C +AF filter

[James Sarte]

That's a good question, and something I'd like to know as well.  I'm
assuming that in order to keep both receivers identical in performance, both
DSP boards will have to be swapped out.  I'm also assuming that the
replacement cost will be doubled.  Please correct me if I'm mistaken.

Cheers,
James K2QI

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Richard Squire -
HB9ANM
Sent: Thursday, December 17, 2009 7:24 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] K3 Rev C +AF filter


Thanks for the info. But since there is allegedly no such thing as a stupid
question, may I ask whether only the main DSP board should be replaced.
How about the second DSP board for the SUB RX? No change?
BTW I'm quite happy with the RX EQ... But I may do the upgrade for the rig
to be up to date.
tnx es 73
Richard

-
Richard - HB9ANM

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3 - Noise on receive

[afu-dg3oo]

hi fellows,

if you want to have a better rxmodulation from the K3, than try this 
german produkt: lingua

http://www.ing-michels.de/en

the algorythmen extract the speech. what you hear, ist so clear like the 
speech at an FM-repeater.
it ist great!

73 de dg3oo
manfred



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Noisy K-3 Receiver

[Jim McCook]

Juergen and others.

I'm glad to see this thread get so much attention; it's about time this 
issue was brought into focus.  In spite of my huge appreciation for this 
radio, I find it to be very noisy and fatiguing to listen to, especially 
with weak signals. 

I have, like others, tried all the adjustments mentioned, but with no 
real improvement.  I can switch to my FT-1000D for relief when this gets 
to the point of being difficult.  I find myself doing this more and more 
often.  I used the K-3 in CQWW SSB and CW, and enjoyed the great 
features and ease of use, especially using the N1MM settings to access 
the KDVR audio during the SSB contest.  But... all these great features 
have come at some cost dealing with the receiver noise.  Even the EQ 
settings are a tradeoff because the noise follows boost in the low range 
for CW (I listen at 350hz).  We still need separate EQ settings for SSB, 
too.

I'm also wondering if the DSP board upgrade for low range will help to 
solve some of this problem

The RX MIX audio arrangement in the FT-1000D is still far superior to 
the K-3, also.  The newest options for this helped, but the Yaesu is 
still better in dual receiving mode with the balance control. 

Jim
W6YA



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [K3] K3 Rev C +AF filter

[Joe Subich, W4TV]

> I don't see what purpose an audio filter board would serve, 
> given that we have a crystal filter followed by DSP filtering 
> and then RX equalization already. Any high frequencies that 
> can get past that lot must be at a pretty low level already.

The add on audio filter board reduces (eliminates) clock 
and audio image leakage from the DAC output.  These are not 
related to the DSP process but hardware artifacts.  

I see several responses between 5 and 15 KHz although they 
may be down 50 dB or more from the peak audio levels.  Still, 
they are as much as 15 or 20 dB above the noise floor above 
4 KHz and this can make the K3's audio somewhat tiring when 
listening to weak signals since these leakage signals do not 
respond to the RX EQ or DSP. 

73, 

   ... Joe, W4TV 
   



> -Original Message-
> From: elecraft-boun...@mailman.qth.net 
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Julian, G4ILO
> Sent: Thursday, December 17, 2009 9:22 AM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] [K3] K3 Rev C +AF filter
> 
> 
> 
> 
> 
> Ian Maude wrote:
> > 
> > Just to make it clear, I am not unhappy with the way Elecraft do 
> > business.  Neither am I bothered about buying a small 
> add-on board to 
> > improve my reception.  I am quite willing to pay for the 
> small board 
> > but do not see why I should have to pay £60-£70 (which it 
> will be here 
> > after shipping and VAT
> > etc) for a replacement DSP board that I do not need.
> > So, is the add on audio filter board available to buy as a separate 
> > unit?
> > 
> > 
> I can't find any mention (other than rumour) of an add-on 
> board. But if such an add-on was designed to fit the new DSP 
> board presumably it would not fit on to the old board.
> 
> The only benefit of the new DSP board as far as I can find 
> out is extended bass response through the headphone socket. 
> While that would be nice to have, like you I can't justify 
> the cost (which I would expect to be more like £80-£90 once 
> you add in the tax collection charge and sending back the old board.)
> 
> I don't see what purpose an audio filter board would serve, 
> given that we have a crystal filter followed by DSP filtering 
> and then RX equalization already. Any high frequencies that 
> can get past that lot must be at a pretty low level already.
> 
> -
> Julian, G4ILO. K2 #392  K3 #222.
> * G4ILO's Shack - http://www.g4ilo.com
> * KComm - http://www.g4ilo.com/kcomm.html
> * KTune - http://www.g4ilo.com/ktune.html
> 



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Noisy Receiver? - not here!

[Paul Christensen]

That should answer the question.  Many Tnx, Roger.

Paul, W9AC

- Original Message - 
From: "Roger Marrotte" 
To: "'Paul Christensen'" 
Sent: Thursday, December 17, 2009 9:29 AM
Subject: RE: [Elecraft] K3: Noisy Receiver? - not here!


> Paul,
>
> I have one of the new DSP boards.  I noticed that the new DSP board has a
> small (approx. 1/2" x 1 1/2") board tacked onto it.  My old DSP board 
> didn't
> have this small board on it.  I'm not sure what it's for.  It could be the
> elusive audio LPF.
>
> Roger, W1EM
>
>
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Paul Christensen
> Sent: Thursday, December 17, 2009 9:10 AM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] K3: Noisy Receiver? - not here!
>
> One outstanding question that's not addressed in the announcement below
> relates to whether or not Main DSP Board Rev. C includes the hardware 
> audio
> LPF.  So, if a K3 owner purchases the K3DSPUPGD upgrade today, will it 
> also
> contain the audio LPF?
>
> Paul, W9AC
>
> 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [K3] K3 Rev C +AF filter

[Eric Tichansky]

Julian, G4ILO wrote:
> I don't see what purpose an audio filter board would serve, given that we
> have a crystal filter followed by DSP filtering and then RX equalization
> already. Any high frequencies that can get past that lot must be at a pretty
> low level already.
>
>   

At least from my perspective and hearing, this LPF module would knock 
down and eliminate the 12 kHz related beat notes noticeable on CW.  
Otherwise, I've had to drag around outboard audio filters + cabling, 
etc. anytime I take the K3s anywhere to guest OP.  I could have opted 
for a passive filter and bastardized my headphones, but chose a pair of 
AF-1 active filters until Elecraft had an "official" fix for the 
problem.  Therefore, the LPF module is not just an audiophile 
enhancement, but hopefully a resolution to a real problem, at least for 
those that have high frequency and sensitive hearing.

- no3m
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K3 DSP board improvement(s)

[Ken Kopp]

Some may recall a problem with overheating / failure
of the audio IC on the DSP board when a mono plug
was plugged into the speaker jack, creating a short
on one side of the chip's output.  I'm aware of several
chip failures ... including mine ... due to this "operator
error".  

In conversation with Elecraft yesterday I learned that
the current DSP board has additional "land" on the
upper edge of the board that provides additional heat-
sinking for the audio chip. 

73! Ken Kopp - K0PP
  elecraftcov...@rfwave.net
  http://tinyurl.com/7lm3m5
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Regarding a carrying box for the K3

[Tom Hammond]

Hi Alan:

GREAT PRICE!!!

Thanks for the link.  And yes, that does appear to be the VERY SAME box!!!

I hope they have a BUNCH of them!!!

73,

Tom

At 21:50 12/16/2009, you wrote:
>For me shipping was about $18 which I thought was a bit too much to
>ship.  So, I went on eBay today looking for a case/container for my K3.
>I found a padded case for a projector that I think will work for my needs.
>
>But, in my search I found the same aluminum case without the foam for
>$32.99 with free shipping.  You can check it out at
>
>
>73,
>
>Alan  N5NA
>
>
>Alan Bloom wrote:
> > I went on line to order but they want $32.21 to ship one $29.95 item to
> > California (UPS ground).  I don't think so...
> >
> > Too bad - looks like a nice unit.
> >
> > Al N1AL
> >
> >
> >
> >
>__
>Elecraft mailing list
>Home: http://mailman.qth.net/mailman/listinfo/elecraft
>Help: http://mailman.qth.net/mmfaq.htm
>Post: mailto:Elecraft@mailman.qth.net
>
>This list hosted by: http://www.qsl.net
>Please help support this email list: http://www.qsl.net/donate.html

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Regarding a carrying box for the K3

[Tom Hammond]

Alan:

>I went on line to order but they want $32.21 to ship one $29.95 item to
>California (UPS ground).  I don't think so...
>
>Too bad - looks like a nice unit.

Find a couple/few others to add to your order.  That shipping was 
virtually IDENTICAL to what they charged me to ship three (3) in a 
single (rather large) box.

Tom

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [K3] K3 Rev C +AF filter

[Julian, G4ILO]

Ian Maude wrote:
> 
> Just to make it clear, I am not unhappy with the way Elecraft do business.
>  Neither am I bothered about buying a small add-on board to improve my
> reception.  I am quite willing to pay for the small board but do not see
> why
> I should have to pay £60-£70 (which it will be here after shipping and VAT
> etc) for a replacement DSP board that I do not need.
> So, is the add on audio filter board available to buy as a separate unit?
> 
> 
I can't find any mention (other than rumour) of an add-on board. But if such
an add-on was designed to fit the new DSP board presumably it would not fit
on to the old board.

The only benefit of the new DSP board as far as I can find out is extended
bass response through the headphone socket. While that would be nice to
have, like you I can't justify the cost (which I would expect to be more
like £80-£90 once you add in the tax collection charge and sending back the
old board.)

I don't see what purpose an audio filter board would serve, given that we
have a crystal filter followed by DSP filtering and then RX equalization
already. Any high frequencies that can get past that lot must be at a pretty
low level already.

-
Julian, G4ILO. K2 #392  K3 #222.
* G4ILO's Shack - http://www.g4ilo.com
* KComm - http://www.g4ilo.com/kcomm.html
* KTune - http://www.g4ilo.com/ktune.html

-- 
View this message in context: 
http://n2.nabble.com/K3-Rev-C-AF-filter-tp4179228p4181511.html
Sent from the [K3] mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Noisy Receiver? - not here!

[Paul Christensen]

The mods are essentially the same, although Elecraft likely re-scaled R 
values rather than C.  The end result is identical.  I drafted those mods at 
a time when the upgrades were not yet implemented by Elecraft.  Taking 
advantage of Elecraft's exchange program is the better choice and leads to 
less potential for damage to the rig.

Paul, W9AC

> Just Google "W9AC Hardware Mod" and you will find the information here:
> http://n1eu.com/K3/k3audiomod.htm . I don't know if it is the same mod as
> now on the updated DSP board but the author states that "Elecraft may 
> offer
> a replacement board for those who don't wish to make the mod" so I am
> guessing that it is.


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Noisy K-3 Receiver

[Don Wilhelm]

The other thing that helps (and helps a LOT) is to reduce the RF Gain 
until the band noise is at a lower level - just barely present.  Yes, it 
will likely be different for each band, but can be quickly set by 
listening to a spot with no signals and listen for the "frying noise" to 
be barely perceivable.  Turning on the attenuator is also helpful.  
Right now, I am listening to an 80 meter local roundtable with the 
attenuator on, the RF Gain at 2 o'clock and the AF Gain at 9 o'clock.

For those who are hesitant to do reduce the RF Gain because the S-meter 
changes when the RF Gain is reduced, the K3 has an absolute (ABS) 
setting for the S-meter, and you have an S-meter that is not influenced 
by the RF Gain nor the preamp nor ATT.

73,
Don W3FPR

chen dave wrote:
> My suggestion:
> 1, upgrade to lastest f/w
> 2, tune the center of the passband to 1.4~1.45k(very important)
>
> Hope those will helps!
>
> all the best!
>
> David,BA4RF
>   
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Noisy Receiver? - not here!

[Paul Christensen]

One outstanding question that's not addressed in the announcement below 
relates to whether or not Main DSP Board Rev. C includes the hardware audio 
LPF.  So, if a K3 owner purchases the K3DSPUPGD upgrade today, will it also 
contain the audio LPF?

Paul, W9AC

- Original Message - 
From: "Bill W4ZV" 
To: 
Sent: Thursday, December 17, 2009 8:59 AM
Subject: Re: [Elecraft] K3: Noisy Receiver? - not here!


>
>
>
> Bill W4ZV wrote:
>>
>> You will not need to modify a new K3.  The mod was implemented around S/N
>> 3010 last April/May.  New unit S/Ns must be approaching 4000 by now.
>>
>
> For the record, here's the information from Elecraft:
>
>
> "We started shipping the latest DSP boards, Rev C, approximately May 1st,
> 2009.  Any K3 DSP board Rev C or later will have the extended low end 
> audio
> response enhancement.
>
> This corresponds approximately to K3 serial number 3018, plus or minus
> 10-20.
>
> Since assembled -Fs and kit K3s flow through different manufacturing 
> paths,
> there is a slight variance in s/n for the phase-in.
>
> If in doubt, check the DSP board Rev as noted above.
>
> A picture of the Rev label location :
>
> http://www.elecraft.com/K3/mods/dsp_rev_c_information.htm
>
> (The 'C', or later, revision letter at the bottom of the label is what is
> important.)"
>
>
> To order the mod kit, order K3DSPUPGD here:
>
> http://www.elecraft.com/order_form_parts.htm#K3%20Parts
>
>
> 73,  Bill
>
> -- 
> View this message in context: 
> http://n2.nabble.com/K3-Noisy-Receiver-not-here-tp4181034p4181412.html
> Sent from the Elecraft mailing list archive at Nabble.com.
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [K3] KY command: internal buffer size?

[Julian, G4ILO]

Tom, DL2RUM wrote:
> 
> I want to know how big the internal CW (or RTTY) buffer is, when using the
> KY command. The KY command can include 24 characters, but I guess the
> internal buffer is bigger than 24 characters.
> How many characters can I send safely, when the extended KY command
> returned 0 (buffer<75% full)?
> 
> 
Hi Tom. You can study the source code of KComm to be sure, since I am
writing from memory which is not always reliable. But as far as I remember
the buffer is *not* bigger than 24 characters. I believe that I send 24
characters if the buffer is empty. If it is less than 75% full I send 6
characters.

-
Julian, G4ILO. K2 #392  K3 #222.
* G4ILO's Shack - http://www.g4ilo.com
* KComm - http://www.g4ilo.com/kcomm.html
* KTune - http://www.g4ilo.com/ktune.html

-- 
View this message in context: 
http://n2.nabble.com/KY-command-internal-buffer-size-tp4181166p4181461.html
Sent from the [K3] mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Noisy Receiver? - not here!

[Julian, G4ILO]

Jorge Diez - CX6VM wrote:
> 
> Hello Hector,
> 
> What´s about this W9AC mod?  Why do you need it and why not the radio have
> this feature done from the Elecraft company if the radio will be better
> with
> this mod?
> 
> I hope to not need to do mods on the K3.!
> 
> I have an old TS850 with many mods, but my idea for a new radio is to be
> great from the company that made them and no need to do MODS on it!...
> 
> 

Just Google "W9AC Hardware Mod" and you will find the information here:
http://n1eu.com/K3/k3audiomod.htm . I don't know if it is the same mod as
now on the updated DSP board but the author states that "Elecraft may offer
a replacement board for those who don't wish to make the mod" so I am
guessing that it is.

Most products evolve and improve over their lifetime. With some products you
would probably never know about this unless you studiously compare the
schematics of different versions.

There are two ways of looking at this. You can think that it is good the
information about these mods is out in the open giving you the opportunity
to update your K3 if you wish. Or you can think it bad that these mods
needed to be made at all.

I don't think they *needed* to be made, because people were happy with the
K3 without these mods. They are just improvements. My K3 #222 still works as
well as it always did. It may not work quite as well as the ones coming out
of the factory now, but the only way to avoid that problem is never to buy
anything until just before it becomes obsolete...


-
Julian, G4ILO. K2 #392  K3 #222.
* G4ILO's Shack - http://www.g4ilo.com
* KComm - http://www.g4ilo.com/kcomm.html
* KTune - http://www.g4ilo.com/ktune.html

-- 
View this message in context: 
http://n2.nabble.com/K3-Noisy-Receiver-not-here-tp4181034p4181419.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Noisy Receiver? - not here!

[Bill W4ZV]

Bill W4ZV wrote:
> 
> You will not need to modify a new K3.  The mod was implemented around S/N
> 3010 last April/May.  New unit S/Ns must be approaching 4000 by now.
> 

For the record, here's the information from Elecraft:


"We started shipping the latest DSP boards, Rev C, approximately May 1st,
2009.  Any K3 DSP board Rev C or later will have the extended low end audio
response enhancement.

This corresponds approximately to K3 serial number 3018, plus or minus
10-20. 

Since assembled -Fs and kit K3s flow through different manufacturing paths,
there is a slight variance in s/n for the phase-in. 

If in doubt, check the DSP board Rev as noted above.

A picture of the Rev label location :

http://www.elecraft.com/K3/mods/dsp_rev_c_information.htm

(The 'C', or later, revision letter at the bottom of the label is what is
important.)"


To order the mod kit, order K3DSPUPGD here:

http://www.elecraft.com/order_form_parts.htm#K3%20Parts


73,  Bill

-- 
View this message in context: 
http://n2.nabble.com/K3-Noisy-Receiver-not-here-tp4181034p4181412.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Noisy K-3 Receiver

[chen dave]

My suggestion:
1, upgrade to lastest f/w
2, tune the center of the passband to 1.4~1.45k(very important)

Hope those will helps!

all the best!

David,BA4RF


2009/12/17 juergen piezo 

> Hi James
>
> This has been my impression for the last 2 years  when using our clubs K3's
>
> I decided to do a comparison with several radios.
>
> FT1000MP
> TS870S
> FT1000D
> TS850S
> TS930S
>
> If you blind folded yourself and did not look at the S-meter and switched
> between the radios, the K3 was always much more noisy. I did this test on 20
> meters and 40 meters. There is no doubt that the K3's correctly calibrated
> S-meter shows more activity. However when you dont look at the S-meter and
> just listen you can hear this apparent greater "noise activity"
>
> What is interesting if there is just signs of a starting thunder storm or
> light QRN, the K3 seems to make the QRN sound much worst. However when the
> QRN is very heavy its as bad as any other radio. I did also play with AGC
> setting and this result was always repeatable. I thought it was the AGC
> doing this, however I changed the slope and it appears to be the same.
>
>  There seems to be a mid range window  in the K3 that makes the radio sound
> much more lively. Above and below this windows thresholds it appears to be
> normal in every other respect.
>
> One thing thats very obvious with the K3 is that you need to play with the
> receiver EQ all the time. The difference can be very stunning when you get
> it right.
>
> There can be no one EQ  setting that is good for weak and general purpose
> listening for both CW and SSB.  The K3 on a flat EQ response is poor at very
> weak signal SSB work. However, when you adjust the EQ  it seems to bring the
> radio back to  life.
>
> The K3 needs a default setting thats similar to most analog radios, a
> defined bandpass filter that needs no EQ adjustment for CW and SSB. The K3
> for some reason needs a lot of highs  and treble to sound decent. Even the
> CW note comes alive with real body like a analog  radio when the EQ is set
> to high /treble boost. My belief is that most who say that the K3 sounds
> poor is for this reason. However when you boost the highs  the receiver is
> very  tiring  on your ears. So you cant seem to win here
>
> There is something strange about how the DSP and the receiver chain works.
> It sounds great with strong normal signals on a quiet band. I do want to try
> a SCAF filter or some other audio filter to see if I can improve things. I
> dont have hearing problems and generally i try and leave the EQ set flat.
> However this has proved problematic for me, especially on weak SSB and CW.
>
> I am a casual K3 user and I dont own a K3, however I have spent enough time
> operating our clubs K3's which have a broad range of  serial numbers many
> factory assembled.  I would like to try and get the new DSP board to see if
> that changes much. Maybe it is because I am a casual K3 user that I notice
> all these quirks, these probably may  disappear if i used a K3 every day. In
> the meantime I prefer any old analog contest radio at the moment.
>
> John
>
> --- On Wed, 12/16/09, James Sarte  wrote:
>
> > From: James Sarte 
> > Subject: Re: [Elecraft] Noisy K-3 Receiver
> > To: elecraft@mailman.qth.net
> > Date: Wednesday, December 16, 2009, 9:42 PM
> > Hi Mike,
> >
> > I've fiddled with all of the AGC, PRE, ATT, RF, and DSP
> > options on my K3,
> > and still experience a relatively high noise floor - at
> > least compared to an
> > FT-1000 side by side.
> >
> > I never gave it much thought until these subject came up on
> > the reflector.
> >
> > Cheers,
> > James K2QI
> >
> > -Original Message-
> > From: elecraft-boun...@mailman.qth.net
> > [mailto:elecraft-boun...@mailman.qth.net]
> > On Behalf Of Mike Harris
> > Sent: Wednesday, December 16, 2009 12:15 PM
> > To: Bill W4ZV; elecraft@mailman.qth.net
> > Subject: Re: [Elecraft] Noisy K-3 Receiver
> >
> > G'day,
> >
> > The simple fact is that the faithful will always suggest
> > that the K3
> > hears more, is more sensitive or is more transparent to
> > band noise
> > etc etc.  Also you have to fiddle with the AGC, PRE,
> > ATT and RF gain
> > whereas other radios just sound nicer out of the box.
> > I don't have
> > a problem with fiddling with AGC and equaliser parameters
> > to tailor
> > the receive to my liking, but to have to do it to make it
> > sound
> > acceptable is another thing altogether.
> >
> > There is an often referred to AF filter module which
> > installs on the
> > main DSP board and apparently cuts out a lot of unnecessary
> > high
> > frequency audio.  Sadly though often referred to it
> > just isn't being
> > made available despite very positive comment from some of
> > those who
> > have field tested it.
> >
> > The KAF2 filter for the K2 made all the difference in the
> > world to
> > listening to SSB.
> >
> > Regards,
> >
> > Mike VP8NO
> >
> > __

[Elecraft] Noisy K-3 Receiver - Not mine!

[Ken Kopp]

This subject of "K3 receiver noise" has illustrated how
differently we view our radios.  

After seriously competing in the recent ARRL 10M and 
160M contests ... and scoring very well... I commented to
Rose and radio club friends how -quiet- the receiver(s) are.

After a seven-month wait to get my K3 (S/N 56), I evaluated 
it against my FT-1000D, FT-990 and an IC-756PROII over a 
several week period. I then sold all three on E-Bay.

The main radio has these 8-pole roofing filters: 13 kHz, 6.0 kHz, 
2.8 kHz, 1.0 kHz and 400 Hz.  The 2nd receiver has a 2.8 kHz
and a 1.8 kHz.  The 2nd RX is mostly used for monitoring 6M.  

When not contesting, I'm primarily a CW rag-chewer on 30M 
and 40M, with an occasional SSB QSO with friends on 75M 
or 160M.  I have 315 CW DXCC countries.  My antenna farm 
is better than most, with four towers, RX loops for 160M and 
80M, an 80M 1/2 wave CF Zepp at 65', a fully insulated 1/4 
wave tower for 160M, etc.  I "hear" well, and the K3 is a joy 
to use. I don't mean to "brag" here ... just illustrate that the 
radio gets a lot of "serious" use in a well-equipped station.

I use a Heil headset and -have- "tweaked" the TX equalization 
with the help of a friend 800 miles away who was watching my 
signal on his Flex.  I've never felt the need to change the RX
equalization from "flat", other than to experiment with it as a
kind of audio-peaking filter.

Now, it's time to order another container of Elecraft Kool-Aid.

73! Ken Kopp - K0PP
 elecraftcov...@rfwave.net
 http://tinyurl.com/7lm3m5
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Noisy Receiver? - not here!

[Bill W4ZV]

Jorge Diez - CX6VM wrote:
> 
> Hello Hector,
> 
> What´s about this W9AC mod?  Why do you need it and why not the radio have
> this feature done from the Elecraft company if the radio will be better
> with
> this mod?
> 
> I hope to not need to do mods on the K3.!
> 
> I have an old TS850 with many mods, but my idea for a new radio is to be
> great from the company that made them and no need to do MODS on it!...
> 

Hola Jorge,

You will not need to modify a new K3.  The mod was implemented around S/N
3010 last April/May.  New unit S/Ns must be approaching 4000 by now.

One of the advantages of owning Elecraft products is that the company allows
you to update (via firmware and hardware mods) your K3 to the very latest
production S/Ns, if you desire.  I do not know of other manufacturers allow
this so easily, especially considering the problems of shipping boat anchor
rigs like the IC-7800 or FT9000.  I have two K3s (#1361 and #2183) and both
are fully up-to-date with the lastest production, except for the much
discussed DSP mod (which I'm not yet convinced I need).

All the discussion about "noisy RX" reminds me of the same for Orion for
several years.  I truly believe the answer lies in the operator...not the
radio.  If the K3 had much worse S/N, you would not see top contest
operators like K5ZD making these statements:

"The K3 worked great all weekend.  Incredible receiver.  Actually made 40
meters
fun!  Wish I had bought one of these a year ago.  Now I have to figure out a
way
to get a second one."

I have but one suggestion regarding the comments about the K3 noise...set
your AF gain to 9-10 o'clock and turn your RF gain back until the background
noise is a comfortable level.  Learn to use the radio correctly!

73,  Bill




-- 
View this message in context: 
http://n2.nabble.com/K3-Noisy-Receiver-not-here-tp4181034p4181354.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Noisy Receiver? - not here!

[Don Wilhelm]

Brian,

I agree with that.  The K3 does sound different than many other 
receivers, it is cleaner, and to my ears reproduces the signals that are 
actually present on the band more faithfully than many other receivers.  
Compare the K3 to a good Direct Conversion receiver or a KK7B Phasing 
receiver without a lot of audio filtering.
 
Yes, the K3 audio does have more high frequency content than required, 
so a low pass filter can strip that off for those who are bothered by 
the high frequency content.  That was what the filter on the DSP board 
is supposed to do.  But the downside is that those who want to hear HF 
broadcast signals in "Hi-Fi" want the audio spectrum to be opened up 
even broader than it is right now.  You just can't please everyone.

I would encourage those who think the K3 is more 'noisy' to listen to 
both the K3 and the comparison receiver with a 3 or 4 kHz audio low pass 
filter in line.  My ears act as low pass filters naturally and I do not 
perceive the K3 to be any noisier than other receivers.

73,
Don W3FPR 

Brian Machesney wrote:
> Gents,
>
> On the flip side, I - and, apparently, many other operators from whom
> we've heard on this and other reflectors - have run the K3 for 30+ hours out
> of a 48-hour contest and not experienced the fatigue you describe. Such
> fatigue would make any rig an intolerable chore to use and would detract
> substantially from the rave reviews the K3 has received in contesting
> circles.
>
> I agree with other post-ers to this reflector that I frequently find myself
> reaching to turn DOWN the RF gain control (I operate with
> factory-supplied AGC defaults). In this respect, I don't find anything WRONG
> with the K3, but I do find it to be DIFFERENT and I have had to modify my
> listening habits to accomodate that difference, just as I have had to do
> when changing radios in the past.
>
> We all appreciate that igs from different manufacturers have different
> "sounds;" I would describe the K3 as "less soft" than the TS850, "more
> precise" than the FT1KMP and "similar" to the Omni VII (I lack experience
> with Icom beyond using the 706MkIIG mobile). Now that I think of it, this
> appears to track the evolution of DSP from "none" to "very low IF" to
> "higher IF."
> 73 -- Brian -- K1LI
>   
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Noisy Receiver? - not here!

[Jorge Diez - CX6VM]

Hello Hector,

What´s about this W9AC mod?  Why do you need it and why not the radio have
this feature done from the Elecraft company if the radio will be better with
this mod?

I hope to not need to do mods on the K3.!

I have an old TS850 with many mods, but my idea for a new radio is to be
great from the company that made them and no need to do MODS on it!...

Thanks,
Jorge
CX6VM/CW5W

-Mensaje original-
De: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] En nombre de Hector Padron
Enviado el: Jueves, 17 de Diciembre de 2009 11:05 a.m.
Para: elecraft@mailman.qth.net
Asunto: Re: [Elecraft] K3: Noisy Receiver? - not here!

I am another of the hundred K3 users who has been using it for long periods
of time like the last SSB WW Contest when I had it on my ears for about 30
hours and it was absolutely not fatiguing,it was pleasent to listen to a
very quite receiver pulling weak stations from the noise and from strong
ones at less than 3 Khz close in freq.I have owned more than 100 radios in
the last 18 years as a ham and the K3 is the quiter of all,its even less
noisy than my former TT Orion and my ProIII.
I normally operate it with the minimun RF gain needed to pull the station I
want to hear,sometimes its so quite that I wonder if its broke or turned
off.
For reference I have my DSP board modified with W9AC hardware mod for wider
audio and also using the latest 3.63 FW version and I have never have had
any single technical problem except the two plastic knobs cracked(VOL and RF
Gain).Its been already 13 months that I own it and I I am pretty satisfied
with this little machine that has become the proud of us americans.
73 and Merry Xmas to all Elecrafters hoping the new year bring us a P3 or
God knows what else.
 
AD4C
K3 # 2192

"For a refined ham it is compulsory to own a k3"

--- On Thu, 12/17/09, Brian Machesney  wrote:


From: Brian Machesney 
Subject: [Elecraft] K3: Noisy Receiver? - not here!
To: "Elecraft Email" 
Date: Thursday, December 17, 2009, 12:40 PM


Gents,

On the flip side, I - and, apparently, many other operators from whom
we've heard on this and other reflectors - have run the K3 for 30+ hours out
of a 48-hour contest and not experienced the fatigue you describe. Such
fatigue would make any rig an intolerable chore to use and would detract
substantially from the rave reviews the K3 has received in contesting
circles.

I agree with other post-ers to this reflector that I frequently find myself
reaching to turn DOWN the RF gain control (I operate with
factory-supplied AGC defaults). In this respect, I don't find anything WRONG
with the K3, but I do find it to be DIFFERENT and I have had to modify my
listening habits to accomodate that difference, just as I have had to do
when changing radios in the past.

We all appreciate that igs from different manufacturers have different
"sounds;" I would describe the K3 as "less soft" than the TS850, "more
precise" than the FT1KMP and "similar" to the Omni VII (I lack experience
with Icom beyond using the 706MkIIG mobile). Now that I think of it, this
appears to track the evolution of DSP from "none" to "very low IF" to
"higher IF."
73 -- Brian -- K1LI
On Thu, Dec 17, 2009 at 12:26 AM, James Sarte  wrote:

>
> "I've worked long pileups [with] the FT-1000, and I don't recall ever
> having as much noise-related fatigue as I get when I use the K3... It just
> seems the K3's noise characteristics seem stronger and perhaps a tad
harsher
> than what comes out of the Yaesu."
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html



  
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
No virus found in this incoming message.
Checked by AVG - www.avg.com 
Version: 8.5.427 / Virus Database: 270.14.110/2568 - Release Date: 12/16/09
19:52:00

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] [K3] KY command: internal buffer size?

[Tom, DL2RUM]

Hello,

I want to know how big the internal CW (or RTTY) buffer is, when using the
KY command. The KY command can include 24 characters, but I guess the
internal buffer is bigger than 24 characters.
How many characters can I send safely, when the extended KY command returned
0 (buffer<75% full)?

74 & Thanks de
Tom, DL2RUM
-- 
View this message in context: 
http://n2.nabble.com/KY-command-internal-buffer-size-tp4181166p4181166.html
Sent from the [K3] mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html