[Elecraft] Re： Diversity Receive as Noise Canc eling?

[Johnny Siu]

Hello Edward,

This will depend on how much 'brain power' is left in the DSP.   Apparently, 
currently, quite a work load of the DSP has been used to eliminate the internal 
birdies.

Having said that, thanks for the modular design of K3, a 'heart-transplant' of 
exchanging the DSP board with more powerful version may be feasible.

 cheers, 


Johnny VR2XMC 



- 郵件原件 
寄件人﹕ Edward R. Cole 
收件人﹕ olaf.de...@mollefaret.no
副本(CC) Elecraft@mailman.qth.net
傳送日期﹕ 2010/11/30 (二) 3:44:10 PM
主題： Re: [Elecraft] Diversity Receive as Noise Canceling?

At 10:06 PM 11/29/2010, you wrote:
>Noted your comment on noise reduction by phase nulling. Have you 
>looked on info on pages by pa0sim, see www.pa0sim.nl, he has done 
>more or less what I think you are considering. Ie connecting the 
>output from 2 phase locked receivers fed with separate antennas and 
>do the amplitude/phase nulling at AF level.
>
>Some of the sound samples on his website are impressive in terms of 
>noise reduction.
>
>I would love to see an application which could do this, would be 
>nice to check out if phase nulling works at a site before trying an 
>MFJ unit or similar. I really would like to see this done in the K3 
>as all the hardware is there to do such phasenulling in software, 
>could eg use the VFO B knob for phase control and the volume knobs 
>for amplitude control. Only requirement is to feed the 2 RXs with 
>separate antennas, ie an alternative use of diversity capability.
>
>I was not able to respond on the reflector. Would be nice if you 
>could keep the group updated if you get more info on this.
>
>73 de Olaf LA3RK

Olaf,

Thanks for writing.  I somehow lost your e-mail and wanted to look at 
the pa0sim webpage.  I merely suggested the idea.  I really have no 
prospect for doing this.  I thought maybe Elecraft might be 
interested in the idea; provide firmware to do it.

A modification on doing diversity reception was what I had in 
mind.  Use a small "sniffer" antenna on the aux Rx input to sample 
noise and null it from the main receiver in sw.  I think it would be 
easiest to accomplish in digital before conversion to audio.  All the 
DSP routines are done there:  NB, NR, AGC, APF, DSP bandwidth.  Phase 
shift and amplitude adjustments would be possible in digital, so 
assigning VFO-B would be relatively simple for phase and use the 
sub-Rx volume for amplitude adjustment.

I guess it's now up to Elecraft if they want to explore this.



73, Ed - KL7UW, WD2XSH/45
==



  
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Re: [Elecraft] Diversity Receive as Noise Canceling?

[Edward R. Cole]

At 10:06 PM 11/29/2010, you wrote:
>Noted your comment on noise reduction by phase nulling. Have you 
>looked on info on pages by pa0sim, see www.pa0sim.nl, he has done 
>more or less what I think you are considering. Ie connecting the 
>output from 2 phase locked receivers fed with separate antennas and 
>do the amplitude/phase nulling at AF level.
>
>Some of the sound samples on his website are impressive in terms of 
>noise reduction.
>
>I would love to see an application which could do this, would be 
>nice to check out if phase nulling works at a site before trying an 
>MFJ unit or similar. I really would like to see this done in the K3 
>as all the hardware is there to do such phasenulling in software, 
>could eg use the VFO B knob for phase control and the volume knobs 
>for amplitude control. Only requirement is to feed the 2 RXs with 
>separate antennas, ie an alternative use of diversity capability.
>
>I was not able to respond on the reflector. Would be nice if you 
>could keep the group updated if you get more info on this.
>
>73 de Olaf LA3RK

Olaf,

Thanks for writing.  I somehow lost your e-mail and wanted to look at 
the pa0sim webpage.  I merely suggested the idea.  I really have no 
prospect for doing this.  I thought maybe Elecraft might be 
interested in the idea; provide firmware to do it.

A modification on doing diversity reception was what I had in 
mind.  Use a small "sniffer" antenna on the aux Rx input to sample 
noise and null it from the main receiver in sw.  I think it would be 
easiest to accomplish in digital before conversion to audio.  All the 
DSP routines are done there:  NB, NR, AGC, APF, DSP bandwidth.  Phase 
shift and amplitude adjustments would be possible in digital, so 
assigning VFO-B would be relatively simple for phase and use the 
sub-Rx volume for amplitude adjustment.

I guess it's now up to Elecraft if they want to explore this.



73, Ed - KL7UW, WD2XSH/45
==
BP40IQ   500 KHz - 10-GHz   www.kl7uw.com
EME: 144-800*w, 432-100w, 1296-testing*, 3400-winter?
DUBUS Magazine USA Rep dubus...@hotmail.com
==
*temp not in service 
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Re: [Elecraft] APF in CQWW; and DXing in general w/K3

[Robert Harmon]

It is interesting that some of us do not experience "too much 
ringing" with the APF when the band is noisy.  It works perfectly
for me,  I wouldn't change a thing.  I think the ringing syndrome 
is a function of how we each use our settings and what we perceive as 
ringing. I had a combination of heavy noise and very heavy QRM this last weekend
during the CQ WW contest and the APF worked quite well, yes there is a distinct
sharp, hollow sounding effect when the APF is engaged, just like listening to a 
narrow
audio filter (go figure) but this is normal for a narrow audio peaking filter.
As Yaesu learned when they dumbed down the APF in the FT1000 to reduce the 
sharp audio filter sound to please some operators, the reduction to the Q they 
made
rendered the APF almost useless. They later came out with a mod to restore it
to its original design which worked great again.   The Elecraft K3 APF design 
is 
a derivative of this excellent APF circuit.
 
73,
Bob
K6UJ

 
On Nov 29, 2010, at 10:03 PM, Igor Kosvin wrote:

> You nailed the proverbial nail on the head. The combination of narrow
> roofing filter, great DSP filtering, cut-off and the feature of zero-beat
> the pitch to the other station works magic in those pile-ups. Unfortunately,
> the CWT is not really useful when the DX working SPLIT. In this case you
> have to rely on your ears to match the tone of the station currently in QSO
> with the DX using the SUB. After practicing for a while I am able to come
> pretty close to call on the same frequency where the last QSO was just
> ended. Works almost every time. 
> In my opinion, the APF is the work in progress, just too much ringing when
> the frequency is noisy. When the band is quiet and the signal is just very
> weak, the APF works fine. Somebody mentioned to add Q adjustment. I agree. I
> would even propose to add this adjustment INSTEAD of APF position adjustment
> with the SHIFT knob. The position is better adjusted with main VFO in FINE
> mode. Just an opinion.
> 
> 73,
> Igor, N1YX 
> 
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of John Harper
> Sent: Monday, November 29, 2010 7:25 PM
> To: Elecraft
> Subject: [Elecraft] APF in CQWW; and DXing in general w/K3
> 
> The past weekend's CQWW was the first time I've had the opportunity to use
> my new K3 in those types of band conditions and I'd been looking forward to
> doing just that. I S&P'ed the whole 'test and used it to tweak and twiddle
> with the K3's various functions, notably the NB settings.
> 
> I didn't use APF that much due to the pace of the contest but there were two
> occassions where an On/Off comparison was the difference between me copying
> the stations or not copying. There were probably more than two but these
> stick out in my mind because they were both new band-countries on 80m (KH2,
> UA0), so I was motivated and thankful to be able to get them logged.
> 
> The real amazement to me wasn't the APF but the ability to tune to a pile-up
> at 500Hz, hearing an amalgam of callsigns, then dial the selectivity down
> and hear the target revealed in splendid isolation. Pile-ups were fun and I
> think of them as a cross between chess and fishing. I'm at a loss as to how
> to explain the ability to get thru a pile-up on 80m with 100W and a dipole
> but I'm beginning to believe it's due to the abilty to precisely zero-beat,
> as opposed to the more general way I was doing it before with the wider
> selectivity necessitated by my previous rig. Results in the contest seem to
> confirm that for me.
> 
> John AE5X
> http://www.ae5x.com/blog
> 
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Re: [Elecraft] APF in CQWW; and DXing in general w/K3

[Igor Kosvin]

You nailed the proverbial nail on the head. The combination of narrow
roofing filter, great DSP filtering, cut-off and the feature of zero-beat
the pitch to the other station works magic in those pile-ups. Unfortunately,
the CWT is not really useful when the DX working SPLIT. In this case you
have to rely on your ears to match the tone of the station currently in QSO
with the DX using the SUB. After practicing for a while I am able to come
pretty close to call on the same frequency where the last QSO was just
ended. Works almost every time. 
In my opinion, the APF is the work in progress, just too much ringing when
the frequency is noisy. When the band is quiet and the signal is just very
weak, the APF works fine. Somebody mentioned to add Q adjustment. I agree. I
would even propose to add this adjustment INSTEAD of APF position adjustment
with the SHIFT knob. The position is better adjusted with main VFO in FINE
mode. Just an opinion.

73,
Igor, N1YX 

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of John Harper
Sent: Monday, November 29, 2010 7:25 PM
To: Elecraft
Subject: [Elecraft] APF in CQWW; and DXing in general w/K3

The past weekend's CQWW was the first time I've had the opportunity to use
my new K3 in those types of band conditions and I'd been looking forward to
doing just that. I S&P'ed the whole 'test and used it to tweak and twiddle
with the K3's various functions, notably the NB settings.

I didn't use APF that much due to the pace of the contest but there were two
occassions where an On/Off comparison was the difference between me copying
the stations or not copying. There were probably more than two but these
stick out in my mind because they were both new band-countries on 80m (KH2,
UA0), so I was motivated and thankful to be able to get them logged.

The real amazement to me wasn't the APF but the ability to tune to a pile-up
at 500Hz, hearing an amalgam of callsigns, then dial the selectivity down
and hear the target revealed in splendid isolation. Pile-ups were fun and I
think of them as a cross between chess and fishing. I'm at a loss as to how
to explain the ability to get thru a pile-up on 80m with 100W and a dipole
but I'm beginning to believe it's due to the abilty to precisely zero-beat,
as opposed to the more general way I was doing it before with the wider
selectivity necessitated by my previous rig. Results in the contest seem to
confirm that for me.

John AE5X
http://www.ae5x.com/blog

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Re: [Elecraft] K3/SV/SDR-IQ/VSPE

[Matt Zilmer]

Best way to prevent BSODs is to keep the drivers up to date.  I use a
Keyspan HS-19 on the laptop for *everything*, and never had a
bluescreen from connecting to dozens of different endpoints - since
late 2004.

The recommendation above includes all USB <=> RS232 host-based
adapters.  New bugs are discovered every day, but new releases of
softare only come once in a while.  *Always* keep your drivers up to
date.

matt W6NIA

On Mon, 29 Nov 2010 20:19:27 -0800 (PST), you wrote:

>
>Forgot to mention that this combination using LP-PAN instead of VSPE gives me
>a BSOD on my LAPTOP but not on my desktop unless I use a USB-serial adapter
>for the radio on the desktop.
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Re: [Elecraft] K3/SV/SDR-IQ/VSPE

[N1JM]

Forgot to mention that this combination using LP-PAN instead of VSPE gives me
a BSOD on my LAPTOP but not on my desktop unless I use a USB-serial adapter
for the radio on the desktop.
-- 
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Sent from the [K3] mailing list archive at Nabble.com.
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Re: [Elecraft] K3/SV/SDR-IQ/VSPE

[N1JM]

On my laptop I use a USB to serial adapter for the radio. On my desktop I use
a serial port. I happened to try the USB-serial adapter on my desktop for
the radio and I got a BSOD. Sounds like I should try a different USB-serial
adapter for the radio. I currently use a Keyspan USA19HS that normally works
super.

Thanks,
John N1JM



N8LP wrote:
> 
>   I can't speak to SV issues, but almost all issues related to LP-Bridge 
> can be traced to a USB-to-serial adapter problem, either with the 
> adapter, a self powered USB hub or a driver problem. It is always 
> advisable to use a motherboard or PCI board serial port if possible. For 
> USB adapters, my experience and that of my users seems to point to a 
> preference for adapters with FTDI chipsets. Also, many users have 
> reported good success with Digi Edgeport adapters, which can be found 
> cheaply on eBay.
> 
> Larry N8LP
> 
> 
> 
> 
> On 11/29/2010 12:00 PM, elecraft-requ...@mailman.qth.net wrote:
>> Date: Sun, 28 Nov 2010 20:18:56 -0800 (PST)
>> From: N1JM
>> Subject: Re: [Elecraft] K3/SV/SDR-IQ/VSPE
>> To:elecraft@mailman.qth.net
>> Message-ID:<1291004336158-5783241.p...@n2.nabble.com>
>> Content-Type: text/plain; charset=us-ascii
>>
>>
>> K3/SV/SDR-IQ/LP-Bridge  works super on my Win7 PC but on my laptop with
>> XP(Macbook Pro with bootcamp) it causes BSOD.
>> -- View this message in context: 
>> http://elecraft.365791.n2.nabble.com/K3-SV-SDR-IQ-VSPE-tp5782232p5783241.html
>>  
>> Sent from the Elecraft mailing list archive at Nabble.com.
> 
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Re: [Elecraft] K2 APF implementation?

[Dave Van Wallaghen]

Wow - I haven't been around for a couple of days and I get back on the 
list and find my name all over it ;-)

Apparently, I've never really read my website too closely. When I put 
those descriptions up there, I just added the word "Enclosure" to the 
description Elecraft had for their mini-modules. I will correct this 
when I get around to updating the site. Thanks for pointing it out.

I'll never profess to be a great business minded individual, but unless 
Eric and I could work out one heck of a deal, I won't be able to sell 
the enclosure with the AF1 for that price ;-)

Thanks for all the great comments on the enclosures and please don't 
hesitate to contact me directly for any questions of comments.

73,
Dave W8FGU



On 11/29/2010 4:17 PM, Ken Alexander wrote:
> And such a deal too!  Quote from the website (not my wording):
> "AF1 Active Filter with Audio Amplifier Enclosure" for $29.95.
>
> He's selling the filter with enclosure for $29.95?  Heck, Elecraft sells the 
> AF-1 alone for $59.95.  How does he do it??  8-)
>
> 73,
>
> Ken, VE3HLS
>
>
>
>> Good points, Ron. And you have also
>> answered my biggest concern with using the AF-1 as an
>> external solution...finding a suitable enclosure (without
>> actually rolling my own...I'm lazy, I guess!). The W8FGU
>> enclosures are very cool! I am constantly amazed at the
>> number of talented folks that have created neat products to
>> enhance the Elecraft kits!
>>
>> Thanks,
>>
>> Jeff
>>
>> --- On Mon, 11/29/10, Ron D'Eau Claire
>> wrote:
>>
>>> From: Ron D'Eau Claire
>>> Subject: RE: [Elecraft] K2 APF implementation?
>>> To: "'jeff martin'",
>> elecraft@mailman.qth.net
>>> Date: Monday, November 29, 2010, 10:10 AM
>>> Yeah, it's nice to have it all built
>>> in, if possible. OTOH, it's nice having
>>> four independently-adjustable controls for Q, center
>>> frequency, gain, and
>>> high-frequency roll-off.
>>>
>>> And W8FGU makes some neat enclosures for the
>> mini-modules,
>>> including the
>>> AF1.
>>>
>>> http://w8fgu.home.comcast.net/~w8fgu/enclosures.html
>>>
>>> Ron AC7AC
>>>
>>>
>>> -Original Message-
>>>
>>> Ron,
>>> Great idea! I agree that the AF-1 would do the trick,
>> but
>>> was hoping that
>>> something integrated into the existing K2
>> firmware/hardware
>>> could be
>>> implemented. If that doesn't pan out, I'll opt for
>> the
>>> AF-1.
>>>
>>> Jeff
>>>
>>>
>>>
>>>
>>
>>
>>
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Re: [Elecraft] K2 - CQWW CW Contest

[Robert G. Strickland]

K2 #5957 with NB, DSP and amp also worked great. Ok, it's not a K3 or 
some such rig. Not saying it is. However, I worked everything I heard, 
hunting and pouncing my way to over 550 contacts and over 500K points 
[claimed]. I had a "new" DSP unit that replaced an "old" one [long 
story], and it was a charm. I like getting more out of less, so the K2 
fits my style. That said, it's a great little rig. If you want to build 
one - a great ham radio experience - the resulting radio will hold its 
own in just about any situation. The K3  and other "big" rigs no doubt 
do better, but, I doubt that they do so very much better as to make the 
K2 obsolete. If a ham decides to go the K2 route he/she won't be 
disappointed.

Satisfied owner of a "mature" product.

...robert


On 11/29/2010 20:36, stan levandowski wrote:
> My barefoot K2 at 5 watts and my 62' attic doublet with the SG-237
> autocoupler produced 43 countries, 25 states, and six Canadian provinces
> for me.  I operated on 80, 40, 20, and 15.
>
> The K2 performed flawlessly.
>
> Stan Levandowski WB2LQF
> HF QRP CW -- Doing more with less for over 50 years!
> QCWA #35038   OOTC #4558   NAQCC #4740   SKCC #6488   FISTS #14992
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-- 
Robert G. Strickland, PhD, ABPH - KE2WY
rc...@verizon.net
Syracuse, New York, USA
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Re: [Elecraft] K3 RF Gain calibration

[Guy Olinger K2AV]

Good!

I've been mostly up on the beta changes and done some alpha testing.
But in there I've gotten out of sync or some silly thing four or five
times and needed rescuing.  Looking back, overall it was worth it.  At
least I get to learn the brand new features one at a time, rather than
being overwhelmed by a complete brand new users manual.

73, Guy.

On Mon, Nov 29, 2010 at 8:43 PM, Ignacy  wrote:
>
> After using the latest utility the RF gain works as it should.
> Ignacy
> --
> View this message in context: 
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Re: [Elecraft] [K2] #7040 is alive!

[Michael Babineau]

John :

Congratulations on K2 S/N 7040 coming to life !  

I finished my K2 (#5995) about a week and a half ago and operated Single 
Operator, Single Band (20m) QRP 
with it in the CQ WW contest this past weekend, from my cottage in VE2. 

I managed to make 235 QSOs, working 61 countries and 20 Zones using 5 watts 
with wire antennas ! 

CQ WW on 20m at QRP power levels was certainly "trial by fire" for this rig but 
its performance  exceeded my expectations. 
I was amazed at both how sensitive and selective the receiver is. 

For the price and the size/weight nothing can touch the K2.  

Best of luck with your K2 John and I wish you many happy hours of DX !

Michael VE3WMB / VA2NB 
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Re: [Elecraft] K3 RF Gain calibration

[Ignacy]

After using the latest utility the RF gain works as it should.
Ignacy
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Re: [Elecraft] K3-P3 duo result in tx keying via VFO turning for 30 seconds

[Ignacy]

I have no idea why this happened. It happened only twice during the contest
so repeating is difficult. I am also not distributing blame as Microham
devices have been very good for me. 

With K3 anything can happen.  Yesterday, after RF gain calibration, the RF
gain control did not work. The culprit was K3's utility of Sept 2010. The
Nov utility made RF gain working again. 

Ignacy
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[Elecraft] Mute Question

[Dave Hawes]

In our Multi-Op station, we use a lot of K3s, many times with two on the same 
band, and sometimes with two on the SAME FREQUENCY.

N1MM Logger provides for a very convenient "callsign stacking" feature 
allowing an assisting operator to listen to the running station's pileup and 
suggest callsigns.  However, it is very uncomfortable for the assist operator's 
ears when the run station transmits, since the assisting op's radio is not 
muted in any way.  We are hopeful that someone has tackled this problem, 
and has a solution.

Is there a way to reduce the audio on an separate K3 when the running K3 
goes into TX?  We wouldn't want the audio turned off completely.  An 
adjustable reduction in audio level would be preferred, so that the assisting 
operator can at least hear what the run station is sending (or saying).

Thanks.

73 - Dave N3RD
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Re: [Elecraft] K2 - CQWW CW Contest

[Tony Morgan]

Congrats Stan, good job.

73,

Tony W7GO

On 11/29/2010 12:36 PM, stan levandowski wrote:
> My barefoot K2 at 5 watts and my 62' attic doublet with the SG-237
> autocoupler produced 43 countries, 25 states, and six Canadian provinces
> for me.  I operated on 80, 40, 20, and 15.
>
> The K2 performed flawlessly.
>
> Stan Levandowski WB2LQF
> HF QRP CW -- Doing more with less for over 50 years!
> QCWA #35038   OOTC #4558   NAQCC #4740   SKCC #6488   FISTS #14992
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Re: [Elecraft] K3-P3 duo result in tx keying via VFO turning for 30 seconds

[Joe Subich, W4TV]

Ignacy,

I don't understand where this would occur.  The P3/K3 is "downstream"
from the CW Keyer and should not enter the equation.  However, there
is only one weight setting ... it is set from the microHAM Router
software and can't be changed by other software ... which applies to
all output from the WinKey chip no matter what the source.

Are you sure you are not bypassing the keyer by configuring your
logging software to use PC generated keying on a serial port DTR
line?

73,

... Joe Subich, W4TV
microHAM America, LLC.
http://www.microHAM-USA.com
http://groups.yahoo.com/group/microHAM


On 11/29/2010 11:00 AM, Ignacy wrote:
>
> I use Microham CW keyer with N1MM. Twice during CQWW, the keyer started
> sending fast low-weight CW and could not be easily stopped. Restarting N1MM
> did not help; keying was still erratic. Strangely, keying from within the
> microham software was fine. Restarting the microham software cured the
> problem.
>
> I attributed it to RF feedback although I never experienced one before with
> Microham devices.
> This was my first contest with P3 and 4.22.
>
> Ignacy





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[Elecraft] Re： Love/Hate your K3

[Johnny Siu]

Hi Stewart,

The modular design of K3 is really good.  We can identify the problematic area 
and just send back / acquire the problematic part to / from Elecraft if 
necessary.

As we are overseas K3 users, I do like the modular design.  It would be 
absolutely painful for me if I had to be so unfortunately to send back my 
IC7800 
to Osaka, Japan for servicing.
 cheers, 


Johnny VR2XMC 



- 郵件原件 
寄件人﹕ GW0ETF 
收件人﹕ elecraft@mailman.qth.net
傳送日期﹕ 2010/11/30 (二) 12:00:06 AM
主題： [Elecraft] Love/Hate your K3


Three hours into cqww the output power on my K3 started fluctuating wildly
and then went to zero. It happened last week too but recovered but this time
it looked final; after significant preparations for the contest and in the
middle of a freezing night I wasn't a happy person.

I'd sort of resigned myself to waiting a few hours and then driving 35 miles
to hopefully borrow a K3 from a friend who wouldn't be doing the contest;
first though I'd quickly check the reflector and to my delight up popped a
message describing this very fault, caused by the TMP cable coming loose
from the J7 connector on the KREF3 board (thanks N3CAQ..!). Off came the lid
to reveal a well seated cable but a nudge on J7 with a pen brought the rf
back to life! Mightily relieved I carried on and things were fine for a
couple of hours until the same thing happened; this time I removed the 2nd
receiver and took out the cable to test it and sure enough the meter across
the centre pins showed intermittent continuitygently flexing the cable
caused the connection to come and go.

Interested to speculate how long the cable has been faulty; this ancient
model (#145) has definitely showed power fluctuations in the past on
occasion but I've assumed a software source (can't explain it..? must be
software..!) so maybe it's been like it from new, don't know. The good news
was I remembered having a spare new TMP cable left over from the KRX3
fitting which I used and all was then back to normality. This now begs the
question of getting replacement TMP cables which I will pose to Aptos since
I assume they are custom made and I can't imagine a non-specialised crimping
tool doing the job.

Moral of this tale is check the reflector first, and watch your connections;
the few problems I've had over the years (including random error messages)
have all been traced to less than perfect contacts of one sort or another.

CQWW was excellent though I am considering claiming for an hours worth of
points from Aptos ;-) Thanks to all those calls familiar from here for the
Qs on 40m - I was sosb low power.

Stewart Rolfe, GW0ETF  
-- 



  
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[Elecraft] Re： K3 Noise Reduction Improvement

[Johnny Siu]

Hello Dan,

I share the same observation for NR of my IC7600.  If K3 had the same 'manual 
notch within AGC loop' as that in IC7600, I would rate my K3 even higher in the 
rank.
 cheers, 


Johnny VR2XMC 



- 郵件原件 
寄件人﹕ Dan Atchison 
收件人﹕ elecraft@mailman.qth.net
傳送日期﹕ 2010/11/30 (二) 2:51:42 AM
主題： Re: [Elecraft] K3 Noise Reduction Improvement


I'd have to agree with you, Roy.

In a moment of weakness many months ago, I purchased an IC-7600.  While it's a 
nice radio, it is NOT a K3 nor would I ever use it in a contest or try fighting 
a pile-up with it (unless it was the only radio available).  That said, with 
all 
the 7600's lackluster features, the Noise Reduction (NR) on the ICOM far, even 
greatly exceeds the NR in the K3.  The noise reduction itself, the quality of 
(remaining) signal (QoS), and its ease of use is a marvel and my benchmark NR 
behavior.  While in the K3 you can usually find a decent NR setting, by no 
means 
is it easily configurable with it's convoluted algorithm scheme nor is the 
resultant QoS as clean.

My opinion only; YMMV.

73,
Dan -- N3ND




Date: Sun, 28 Nov 2010 16:27:56 -0500
From: "Roy Morris" 
Subject: [Elecraft] K3 Noise Reduction Performance
To: 


I have two K3s and the NR is the same on both.  If I had to identify a feature 
on the K3 that needs improvement, I would have to say it is the NR.  I cannot 
find a noise reduction setting that is suitable to me.  I realize this is a 
subjective, and you would have to compare the K3s noise reduction with that of 
another radio.  I have owned the Ten-Tec Omni VII which in my opinion has the 
best NR on SSB without a doubt.  I believe it is all in the NR programming and 
how the algorithms are set up.  There has been considerable improvement from 
the 

time the K3 was introduced, but I believe there is still room for further 
improvement.  I would like to see noise reduction with a minimum loss of signal 
fidelity.    Roy Morris  W4WFB


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[Elecraft] Re： Garry Surrency Off-line for at least a week

[Johnny Siu]

Hello Eric,

Please send my best regards to Gary who has helped me so much since my K2 #1146 
up to my latest P3# 787.

He is your treasure in Elecraft.
 cheers, 


Johnny VR2XMC 



- 郵件原件 
寄件人﹕ "Eric Swartz - WA6HHQ, Elecraft" 
收件人﹕ Elecraft Reflector 
傳送日期﹕ 2010/11/30 (二) 1:31:14 AM
主題： [Elecraft] Garry Surrency Off-line for at least a week

Gary Surrency (g...@elecraft...) in our support group is ill and will be 
off-line for at least a week. Dale, Richard and several others will be 
handling the increased load on all new support emails for this period.  
But if you have sent Gary an email in the last several days, you may 
need to resend to k3supp...@elecraft.com or supp...@elecraft.com (non-K3 
support).

We apologize for any delays in response this may cause.

73, Eric  WA6HHQ
www.elecraft.com


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[Elecraft] K3 Noise Reduction Performance

[Johnny Siu]

Yes, there are a few occasions when the NR in my K3 is effective.   However, 
there are indeed far many occasions when I have to massage around the 4 x 8 = 
32 
settings and I do not find it easy to identify one to suit the then situation.

On the other hands, I simply set the NR knot at 10-11 o'clock in my Icom 
families.  This will suit 90% of the situation with little artifact and less 
listening fatigue.
 cheers, 


Johnny VR2XMC 



- 郵件原件 
寄件人﹕ The Smiths 
收件人﹕ w4...@carolina.rr.com; Elecraft Reflector 
傳送日期﹕ 2010/11/29 (一) 1:26:29 PM
主題： Re: [Elecraft] K3 Noise Reduction Performance


I have to disagree.  I have serious QRM at my location and when I use settings 
2-5 with Med 2 IF on my NR, it cleans up ALL of the electrical noise in my 
area.  I ALWAYS drop at least 3 S-Units of noise each time I turn mine on.  
However, if there can be even more improvement than I'm all for it.

T. Smith

> From: w4...@carolina.rr.com
> To: elecraft@mailman.qth.net
> Date: Sun, 28 Nov 2010 16:27:56 -0500
> Subject: [Elecraft] K3 Noise Reduction Performance
> 
> I have two K3s and the NR is the same on both. If I had to identify a feature 
>on the K3 that needs improvement, I would have to say it is the NR. I cannot 
>find a noise reduction setting that is suitable to me. I realize this is a 
>subjective, and you would have to compare the K3s noise reduction with that of 
>another radio. I have owned the Ten-Tec Omni VII which in my opinion has the 
>best NR on SSB without a doubt. I believe it is all in the NR programming and 
>how the algorithms are set up. There has been considerable improvement from 
>the 
>time the K3 was introduced, but I believe there is still room for further 
>improvement. I would like to see noise reduction with a minimum loss of signal 
>fidelity. Roy Morris W4WFB
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Re: [Elecraft] K2 APF implementation?

[Bill Tippett]

On Mon, Nov 29, 2010 at 7:20 PM, Ron D'Eau Claire  wrote:

> I didn't say the KAF2, Bill. I'm speaking of the Elecraft AF1 Mini-module.
>
> The circuit in the AF1 is an active filter of the type the APF emulates in
> DSP.
>

My mistake Ron.  I thought you meant the KAF2.

73,  Bill
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[Elecraft] APF in CQWW; and DXing in general w/K3

[John Harper]

The past weekend's CQWW was the first time I've had the opportunity to use my 
new K3 in those types of band conditions and I'd been looking forward to doing 
just that. I S&P'ed the whole 'test and used it to tweak and twiddle with the 
K3's various functions, notably the NB settings.

I didn't use APF that much due to the pace of the contest but there were two 
occassions where an On/Off comparison was the difference between me copying the 
stations or not copying. There were probably more than two but these stick out 
in my mind because they were both new band-countries on 80m (KH2, UA0), so I 
was motivated and thankful to be able to get them logged.

The real amazement to me wasn't the APF but the ability to tune to a pile-up at 
500Hz, hearing an amalgam of callsigns, then dial the selectivity down and hear 
the target revealed in splendid isolation. Pile-ups were fun and I think of 
them as a cross between chess and fishing. I'm at a loss as to how to explain 
the ability to get thru a pile-up on 80m with 100W and a dipole but I'm 
beginning to believe it's due to the abilty to precisely zero-beat, as opposed 
to the more general way I was doing it before with the wider selectivity 
necessitated by my previous rig. Results in the contest seem to confirm that 
for me.

John AE5X
http://www.ae5x.com/blog

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Re: [Elecraft] K2 APF implementation?

[Fred Jensen]

On 11/29/2010 11:10 AM, jeff martin wrote:
> Good points, Ron. And you have also answered my biggest concern with
> using the AF-1 as an external solution...finding a suitable enclosure
> (without actually rolling my own...I'm lazy, I guess!). The W8FGU
> enclosures are very cool! I am constantly amazed at the number of
> talented folks that have created neat products to enhance the
> Elecraft kits!

I have Dave's W1 enclosure and the dust cover for my Hexkey ... I was 
sort of his field tester.  They are indeed great.  When Rose made my K2 
field case, she arranged for a padded board on top of the K2 after it's 
put in on its side, and the W1 in Dave's enclosure + a Bencher BY-1 fit 
nicely on top.  Makes a great kit for SOTA summit activations.

It's sort of a little economic community that has grown up around 
Elecraft products.

I have the audio filter internal to my K2 and use it often.  It's not 
quite the same as the K3 APF, but it does a very similar job.  It does 
not ring in the slightest that I can tell.  The K2 front panel makes 
multiple use of pretty much every control.  I'm not sure I'd like yet 
more functions.  Given that the K2 firmware is not field downloadable as 
is the K3, I don't think I'd spring for an APF mod.  I know how to use 
my K2, it works just super, and "if it works, don't mess with it." 
Besides, I think Wayne or Eric once said they consider the K1 and K2 to 
be "mature product lines."

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2011 Cal QSO Party 1-2 Oct 2011
- www.cqp.org
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Re: [Elecraft] K2 APF implementation?

[Ron D'Eau Claire]

I didn't say the KAF2, Bill. I'm speaking of the Elecraft AF1 Mini-module. 

The circuit in the AF1 is an active filter of the type the APF emulates in
DSP. 

Ron AC7AC 

-Original Message-

Ron D'Eau Claire wrote:
> 
> Jeff, I have compared the K3's APF with the filter offered in Elecraft's
> AF-1 Active Filter mini-module kit. There is no difference I can hear in
> the
> performance. Actually the AF-1 has more flexibility since you have two
> levels of "Q" to choose from, variable gain, and an independent variable
> low-pass filter function.
> 

Ron, when I read this I didn't think it sounded like the KAF2 I have, so I
checked the manual (you wrote it?)  Per the specifications...


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Re: [Elecraft] [K3] APF in CQWW

[Ron D'Eau Claire]

Hi Jorge:

It's all in the release notes with the beta firmware on the Elecraft web
site: www.elecraft.com

Click on Firmware+SW on the sidebar menu. What you want is at the top of the
page that loads: click on "K3 Firmware Updates and Download/Config Utility".
The current firmware is the  top listed on the page the comes up next. Also,
be sure to use the latest K3 Utility program. They are available when you
scroll down to the bottom of that page. 

Have fun - 

73,

Ron AC7AC

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jorge Diez - CX6VM
Sent: Monday, November 29, 2010 3:16 PM
To: 'K5WA'; 'Elecraft reflector'
Subject: Re: [Elecraft] [K3] APF in CQWW

Hello,

I missed many emails in last weeks.

Where can I found information about APF, wich knobs I need to use, wich
firmware, and all the useful information to use APF

I will need it for next ARRL160...

Thanks in advance

73,
Jorge
CX6VM/CW5W

-Mensaje original-
De: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] En nombre de K5WA
Enviado el: Lunes, 29 de Noviembre de 2010 01:26 p.m.
Para: 'Elecraft reflector'
Asunto: [Elecraft] [K3] APF in CQWW

I loaded 4.22 for the CQWW CW this weekend and had a great time playing with
it.  2 of my beverages are not working so I originally thought I would just
need APF where my missing beverages were out, but I ended up trying it in
many 80 and 160 situations and found it extremely useful.  At first, I
didn't read the instructions well enough to turn the correct knob to adjust
APF, but I finally figured it out.  It REALLY brought signals out of the
noise that were hard to copy.  Amazing!  It helped me get 72 countries on 80
and 52 countries on 160 this weekend in a single op effort.  My only request
would be to cut the ringing/gain (whichever applies) back just a bit but it
really adds contacts to your score.  Maybe the gain could be user adjustable
in a menu?

Great new tool!

Bob K5WA

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Re: [Elecraft] L R volume settings

[Vic K2VCO]

At present, the only way to handle this is with 'phones or speakers that have 
individual 
volume controls.

On 11/29/2010 2:27 PM, Tim Tucker wrote:
> I noticed that the Left volume is very slightly louder than the right on my
> stereo speakers, as well.  No  SubRX here either and I haven't found a way
> to adjust the balance either?
>
>
>
> On Mon, Nov 29, 2010 at 1:10 PM, Vic K2VCO  wrote:
>
>> But this only works when the subrx is active. It doesn't do anything for
>> single-rx
>> operation. It would be a nice feature to have this work the same way.
>>
>> On 11/29/2010 12:21 PM, Don Wilhelm wrote:
>>> Don,
>>>
>>> If you have manual version D-6 (download it), look on page 37 and also
>>> at the CONFIG: SUB AF menu item on page 57.
>>>
>>> 73,
>>> Don W3FPR
>>>
>>> On 11/29/2010 2:54 PM, gold...@charter.net wrote:
 Dear Group,

 Using sterio headphones, how do you adjust the L R volume levels.

 Right now my left headphone is louder than my right and I would like to
 adjust the balance.

 I have found how to turn mono vs sterio on and set the equalizer, but
 not the balance.

 Any help would be greatly appreciated.

 Thanks
 Don KD8NNU

-- 
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/
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Re: [Elecraft] [K3] APF in CQWW

[K5WA]

Jorge,

Download Firmware version 4.22 as I said in my post.  You will find the text
file in the firmware download which tells you about the correct knob to use,
but it is the SHIFT knob which sets the APF frequency.

See you in the 160 contest.

73,
Bob K5WA

-Original Message-
From: Jorge Diez - CX6VM [mailto:cx6vm.jo...@adinet.com.uy] 
Sent: Monday, November 29, 2010 5:16 PM
To: 'K5WA'; 'Elecraft reflector'
Subject: RE: [Elecraft] [K3] APF in CQWW

Hello,

I missed many emails in last weeks.

Where can I found information about APF, wich knobs I need to use, wich
firmware, and all the useful information to use APF

I will need it for next ARRL160...

Thanks in advance

73,
Jorge
CX6VM/CW5W

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Re: [Elecraft] K2 APF implementation?

[Bill W4ZV]

Ron D'Eau Claire wrote:
> 
> Jeff, I have compared the K3's APF with the filter offered in Elecraft's
> AF-1 Active Filter mini-module kit. There is no difference I can hear in
> the
> performance. Actually the AF-1 has more flexibility since you have two
> levels of "Q" to choose from, variable gain, and an independent variable
> low-pass filter function.
> 

Ron, when I read this I didn't think it sounded like the KAF2 I have, so I
checked the manual (you wrote it?)  Per the specifications:

BPF Bandwidth:  80 Hz @ -3 dB; 270 Hz @ -20 dB
Gain:  0-1 dB in OFF (LPF only) and AF1 (first CW filter stage) modes,
slightly higher in AF2 mode (both stages).

Contrast this to the K3's APF:

BPF with 30 Hz @ -3 dB and gain of +9 dB.

http://sites.google.com/site/ft1000apf/w6lxanalysisoftheapfcircuitintheft-1000
(see Slide #3)

The KAF2 is a typical audio bandpass filter like those found in many rigs
(e.g. TS-930S, etc).  The K3 APF is an entirely different animal based on
the FT-1000D's highly acclaimed APF.  I've never found the KAF2 to be very
effective but the K3's can be quite effective in certain cases (but not
all).

73,  Bill





-- 
View this message in context: 
http://elecraft.365791.n2.nabble.com/K2-APF-implementation-tp5783119p5786449.html
Sent from the [K3] mailing list archive at Nabble.com.
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Re: [Elecraft] [K3] APF in CQWW

[Jorge Diez - CX6VM]

Hello,

I missed many emails in last weeks.

Where can I found information about APF, wich knobs I need to use, wich
firmware, and all the useful information to use APF

I will need it for next ARRL160...

Thanks in advance

73,
Jorge
CX6VM/CW5W

-Mensaje original-
De: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] En nombre de K5WA
Enviado el: Lunes, 29 de Noviembre de 2010 01:26 p.m.
Para: 'Elecraft reflector'
Asunto: [Elecraft] [K3] APF in CQWW

I loaded 4.22 for the CQWW CW this weekend and had a great time playing with
it.  2 of my beverages are not working so I originally thought I would just
need APF where my missing beverages were out, but I ended up trying it in
many 80 and 160 situations and found it extremely useful.  At first, I
didn't read the instructions well enough to turn the correct knob to adjust
APF, but I finally figured it out.  It REALLY brought signals out of the
noise that were hard to copy.  Amazing!  It helped me get 72 countries on 80
and 52 countries on 160 this weekend in a single op effort.  My only request
would be to cut the ringing/gain (whichever applies) back just a bit but it
really adds contacts to your score.  Maybe the gain could be user adjustable
in a menu?

Great new tool!

Bob K5WA

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Re: [Elecraft] K3 Noise Reduction Performance

[Joe Subich, W4TV]

Micheal,

>> First off I would like to point out to the group that Joe has just
>> proven one thing.. He is nothing more than a common BULLY. Plain
>> and simple.

It is you who has acted like a bully for quite some time here - and
previously on multiple other equipment specific e-mail lists - all
the time hiding behind this "privacy" nonsense.  The policy of this
list has been to include the poster's real name and call sign but I
don't see that you have done that once in all the time you've been
here.  Instead, you use a pseudonym that is about as generic as "J.
Doe" and claim to be an SWL while all the time picking fights with
those who don't agree with your view of the world ... or who point
out that what you say is quite simply and factually incorrect.

It is quite obvious that you do not care to be identified with your
remarks or take any responsibility for them ... otherwise you would
not try to hide behind some curtain with an assumed name, no call
and a "hotmail" e-mail account.

>> I believe that action against Joe should be taken at this time.

Now, who is the *real* bully?  If the emperor has no clothes, it is
time someone stepped up and said so.  You simply act like one who
leaves an IED on the information super-highway or lobs RPGs into a
public square from a hillside a few km away.  Your behavior does
nothing to improve information sharing or or encourage polite
conversation.

>> This harrasment MUST stop.

Agreed!  Stop harassing the members of the is list; act like a man,
take responsibility for what you post and sign your e-mail with your
real name and call (or find another sandbox willing to play by your
"rules").

... Joe, W4TV


On 11/29/2010 4:48 PM, The Smiths wrote:
>
> First off I would like to point out to the group that Joe has just proven one 
> thing.. He is nothing more than a common BULLY. Plain and simple.
>
> Second, whether this is my information or not, it is not your place to be 
> posting someone's personal information on the reflector. I'm not sure who 
> made you the police of this group, but it's very unbecoming.  I feel sorry 
> for you Joe. You're so damaged that you need to make unprovoked posts like 
> this.  I hope that the readers of this reflector see just how disrespectful, 
> rude and self serving you are.  You're nothing more than a person that likes 
> to cause conflict with others unprovoked. I hope Eric sees this, and he bans 
> you from the reflector for your inconsideration.
>
> Nothing in my post below refers to you, or even has any negative remarks that 
> would affect others.  As matter of fact, I just simply tried to help the 
> other by pointing out that settings 2-5 with Medium 2 IF helps the NB work 
> better.  Yet somehow you feel this has caused you so much grief that you need 
> to start a campaign to discredit, expose and bully others.  I truly feel 
> sorry for you.
>
> Now, if you feel that this N6MQL IS me, than fine.  I see that Jim Rogers has 
> posted that information earlier, where he got that I don't know.  However, 
> I'm sure that N6MQL wouldn't be to happy that you've accused him of 
> something, then gone on to post his personal information on the group 
> regardless.  I hope you're happy with your actions, and that you feel good 
> about yourself now.
> I believe that action against Joe should be taken at this time.  Enough is 
> enough. This harrasment MUST stop.
>
>
> T. Smith
>
>
>> Date: Mon, 29 Nov 2010 15:09:55 -0500
>> From: li...@subich.com
>> To: elecraft@mailman.qth.net
>> Subject: Re: [Elecraft] K3 Noise Reduction Performance
>>
>>
>> Where is your real name and call as required by the list policy?
>>
>> N6MQL
>> ARETSKY, MICHAEL A
>> 5543 TIERRA GARDENS LN
>> CARMICHAEL, CA 95608
>>
>>
>>
>> On 11/29/2010 12:26 AM, The Smiths wrote:
>>>
>>
>>> I have to disagree. I have serious QRM at my location and when I use
>> settings 2-5 with Med 2 IF on my NR, it cleans up ALL of the electrical
>> noise in my area. I ALWAYS drop at least 3 S-Units of noise each time I
>> turn mine on. However, if there can be even more improvement than I'm
>> all for it.
>>
>>> T. Smith
>>>
 From: w4...@carolina.rr.com
 To: elecraft@mailman.qth.net
 Date: Sun, 28 Nov 2010 16:27:56 -0500
 Subject: [Elecraft] K3 Noise Reduction Performance

 I have two K3s and the NR is the same on both. If I had to identify a 
 feature on the K3 that needs improvement, I would have to say it is the 
 NR. I cannot find a noise reduction setting that is suitable to me. I 
 realize this is a subjective, and you would have to compare the K3s noise 
 reduction with that of another radio. I have owned the Ten-Tec Omni VII 
 which in my opinion has the best NR on SSB without a doubt. I believe it 
 is all in the NR programming and how the algorithms are set up. There has 
 been considerable improvement from the time the K3 was introduced, but I 
 believe there is still room for further improvement. I would li

[Elecraft] "Quiet" locations and K3 + P3 inquiry

[Missouri Guy]

Hi Gents,

I have a question for those of you that have truly quiet
(can hear a "pin drop"!) locations AND have the the K3+P3 
combo AND have 160m receiving antennas:

When tuned to say, 1830kHz, and the span is set for
say, +-30 khz, what averaged noise level do you
see on your P3 screen?

The reason I ask is that our power co guys were in the neighborhood
today and I (so far) have made some huge improvements in noise
reduction.

Thanks,
Charlie, N0TT
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Re: [Elecraft] L R volume settings

[Tim Tucker]

I noticed that the Left volume is very slightly louder than the right on my
stereo speakers, as well.  No  SubRX here either and I haven't found a way
to adjust the balance either?



On Mon, Nov 29, 2010 at 1:10 PM, Vic K2VCO  wrote:

> But this only works when the subrx is active. It doesn't do anything for
> single-rx
> operation. It would be a nice feature to have this work the same way.
>
> On 11/29/2010 12:21 PM, Don Wilhelm wrote:
> >Don,
> >
> > If you have manual version D-6 (download it), look on page 37 and also
> > at the CONFIG: SUB AF menu item on page 57.
> >
> > 73,
> > Don W3FPR
> >
> > On 11/29/2010 2:54 PM, gold...@charter.net wrote:
> >> Dear Group,
> >>
> >> Using sterio headphones, how do you adjust the L R volume levels.
> >>
> >> Right now my left headphone is louder than my right and I would like to
> >> adjust the balance.
> >>
> >> I have found how to turn mono vs sterio on and set the equalizer, but
> >> not the balance.
> >>
> >> Any help would be greatly appreciated.
> >>
> >> Thanks
> >> Don KD8NNU
> >>
> >> __
> >> Elecraft mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> >> Help: http://mailman.qth.net/mmfaq.htm
> >> Post: mailto:Elecraft@mailman.qth.net
> >>
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> >>
> > __
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> > Post: mailto:Elecraft@mailman.qth.net
> >
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>
> --
> Vic, K2VCO
> Fresno CA
> http://www.qsl.net/k2vco/
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Re: [Elecraft] K3 Noise Reduction Performance

[Eric Swartz - WA6HHQ, Elecraft]

Clarification on #3:

3. It is -not- appropriate to use a false name, or -false- callsign, or to post
anonymously.

Eric
Elecraft Moderator
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Re: [Elecraft] K3 Noise Reduction Performance

[Eric Swartz - WA6HHQ, Elecraft]

Michael and Joe,

Please refrain from posting any more emails to the list regarding how 
another is mis-identified, or verbally attacking one another. It is not 
appropriate to argue this out here, and it is outside of list guidelines 
to -ever- verbally attack another person here.

As moderator, please notify me if you have concerns or problems.  There 
is only one moderator. Please do not attempt to moderate the list 
yourself. :-)

Lastly, let me clarify the posting identification standard for the list. 
This is a hosted forum, and we want to keep all of the interaction 
between everyone friendly and cordial. From past experience, anonymous 
postings generally do not support friendly interaction in a group this 
large.

1. Please identify yourself by your real name. First name only is OK.

2. If you have a callsign, please include it in the posting or from: field.
 (first Name/Callsign can be in your from: field or in the body of 
the message.)

3. It is -not- appropriate to use a false name, or callsign, or to post 
anonymously.

We moderate this list with a very light hand and generally do not 
over-zealously or rigidly enforce the list standards. We have a lot of 
much more urgent items to deal with here daily getting new products out 
the door to everyone :-)  Guys, this is a hobby for most list members - 
please do not push this issue any further.

Also, remember, anyhting you post is archived on the net for eternitiy 
for both your family, friends, employers etc to see..

73, Eric  WA6HHQ
Elecraft List Moderator


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Re: [Elecraft] K2 APF implementation?

[Ron D'Eau Claire]

Ha, ha!! The bane of word-smithing. Of course it's the "Enclosure for the
AF1 Active Filter with Audio Amplifier". 

That's what keeps me in business pounding on this keyboard. 

Dave's a very nice guy. Actually that's *my* AF1 (and WM1) in the
enclosures. I don't have any business relation with him - I just helped
check out the design and shot the product photos for those mini-modules he
didn't have. 

Ron AC7AC

-Original Message-
And such a deal too!  Quote from the website (not my wording):
"AF1 Active Filter with Audio Amplifier Enclosure" for $29.95.

He's selling the filter with enclosure for $29.95?  Heck, Elecraft sells the
AF-1 alone for $59.95.  How does he do it??  8-)

73,

Ken, VE3HLS


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Re: [Elecraft] Re： KPA-500

[Gary Gregory]

Hi Johnny,

Yes, me too. Also I got confused with the KAT-500 which I also really need
so I can use the remote version attached to my trailer and just use a single
feedline to the Motorhome.

I can use the Yagi tri-bander, a 40M vertical and a double extended Zepp for
40/80M etc.

I understand the KPA-500 is due out January/February and I think the tuner
is due after that but that is old information and some indication from
Elecraft would be beneficial for those of us waiting in limbo.

Regards
Gary

On Mon, Nov 29, 2010 at 9:39 PM, Johnny Siu  wrote:

> Hello Gary,
>
> I also like to know the time table.  Otherwise, I will go for SPE Expert
> 1k-fa.
>  cheers,
>
>
> Johnny VR2XMC
>
>
>
> - 郵件原件 
> 寄件人﹕ Gary Gregory 
> 收件人﹕ elecraft@mailman.qth.net
> 傳送日期﹕ 2010/11/29 (一) 7:01:27 PM
> 主題： [Elecraft] KPA-500
>
> Seasons Greetings,
>
> Is there any further word on a possible release date/month for the 'new'
> tuner?
>
> Just curious as I could sure use one to make portable set-up a little
> easier
> for me.
>
> Regards
> Gary
>
>
>
> --
> Gary
> VK4FD - Motorhome Mobile
> http://www.qsl.net/vk4fd/
> K3 #679, P3 #546
>
>
>
>
>


-- 
Gary
VK4FD - Motorhome Mobile
http://www.qsl.net/vk4fd/
K3 #679, P3 #546
For everything else there's Mastercard!!!
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Re: [Elecraft] K2 APF implementation?

[Ken Alexander]

And such a deal too!  Quote from the website (not my wording):
"AF1 Active Filter with Audio Amplifier Enclosure" for $29.95.

He's selling the filter with enclosure for $29.95?  Heck, Elecraft sells the 
AF-1 alone for $59.95.  How does he do it??  8-)

73,

Ken, VE3HLS



> Good points, Ron. And you have also
> answered my biggest concern with using the AF-1 as an
> external solution...finding a suitable enclosure (without
> actually rolling my own...I'm lazy, I guess!). The W8FGU
> enclosures are very cool! I am constantly amazed at the
> number of talented folks that have created neat products to
> enhance the Elecraft kits!
> 
> Thanks,
> 
> Jeff
> 
> --- On Mon, 11/29/10, Ron D'Eau Claire 
> wrote:
> 
> > From: Ron D'Eau Claire 
> > Subject: RE: [Elecraft] K2 APF implementation?
> > To: "'jeff martin'" ,
> elecraft@mailman.qth.net
> > Date: Monday, November 29, 2010, 10:10 AM
> > Yeah, it's nice to have it all built
> > in, if possible. OTOH, it's nice having
> > four independently-adjustable controls for Q, center
> > frequency, gain, and
> > high-frequency roll-off. 
> > 
> > And W8FGU makes some neat enclosures for the
> mini-modules,
> > including the
> > AF1. 
> > 
> > http://w8fgu.home.comcast.net/~w8fgu/enclosures.html
> > 
> > Ron AC7AC
> > 
> > 
> > -Original Message-
> > 
> > Ron,
> > Great idea! I agree that the AF-1 would do the trick,
> but
> > was hoping that
> > something integrated into the existing K2
> firmware/hardware
> > could be
> > implemented. If that doesn't pan out, I'll opt for
> the
> > AF-1.
> > 
> > Jeff 
> > 
> >      
> > 
> > 
> 
> 
>       
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Re: [Elecraft] L R volume settings

[Vic K2VCO]

But this only works when the subrx is active. It doesn't do anything for 
single-rx 
operation. It would be a nice feature to have this work the same way.

On 11/29/2010 12:21 PM, Don Wilhelm wrote:
>Don,
>
> If you have manual version D-6 (download it), look on page 37 and also
> at the CONFIG: SUB AF menu item on page 57.
>
> 73,
> Don W3FPR
>
> On 11/29/2010 2:54 PM, gold...@charter.net wrote:
>> Dear Group,
>>
>> Using sterio headphones, how do you adjust the L R volume levels.
>>
>> Right now my left headphone is louder than my right and I would like to
>> adjust the balance.
>>
>> I have found how to turn mono vs sterio on and set the equalizer, but
>> not the balance.
>>
>> Any help would be greatly appreciated.
>>
>> Thanks
>> Don KD8NNU
>>
>> __
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>>
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-- 
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/
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Re: [Elecraft] K3: Configuration Storage Porblem

[Guy Olinger K2AV]

I'd call that one into Elecraft support.  Let them walk you through some
analysis.   73, Guy.

On Mon, Nov 29, 2010 at 3:41 PM,  wrote:

>
>
>
> K3 s/n 1428
>
> Two recent problems that may be related:
>
> 1.  After the K3 has been powered off for a long time (e.g., over night)
> and I power it on, I can’t get more than 12 watts out.  I checked the
> configuration menu for KPA and it’s normal.  NOTE:  I first noticed this on
> Friday (11/26) about 30 minutes before the start of CQWW Contest when I went
> t double check the presets on my linear.  After a panicked search of the
> manual and the reflector list, I changed from Beta Version 4.22 to 4.14 and
> it didn’t help.  As a last resort, I reinstalled the configuration I had
> saved in the Utility and it fixed things (5 whole minutes before the contest
> start!)  The K3 was on for the next 48 hours with no issues.  I turned it
> off after the contest and today, when I turned it on again, the same
> problem.  Having the radio off for a short time (e.g., about 30 minutes has
> no problem)
>
> 2. After the K3 has been powered off for a long time (e.g., over night) and
> I turn it on, I get ERR messages (e.g., ERR BP1).  If I keep tapping the
> band switch, I get a series of other ERR messages (e.g., ERR IO3, etc.)  and
> eventually the VFOB frequncy gets displayed.  I thought this was related to
> the random power on error messages Wayne referred to in one of the software
> fixes, but I got this with Version 4.22 as well.
>
> It seems to me that my K3 MCU is not retaining some of the configuration
> data.  When I run through the configuration menu, I don’t see any errors.  I
> did a quick search of the manual and didn’t find any help.
>
> Any help here?
>
> Gerry, W1GD
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Re: [Elecraft] K3 RF Gain calibration

[Guy Olinger K2AV]

The real choice is changes as we go, and a penalty of sorts for not keeping
up, or the Yakencom way of no changes until you buy next model.  As they
say, pick your poison.  I'll take life on the bleeding edge.  73, Guy.

On Mon, Nov 29, 2010 at 2:43 PM, Ignacy  wrote:

>
> Thanks, I will try the new one.
> Seems K3 delivers lots of drama due to many changes. But it is also good
> that the K3 users are highly advanced and helpful.
> Ignacy
>
>
>
> On Mon, Nov 29, 2010 at 1:25 PM, Bill W4ZV [via Elecraft] <
> ml-node+5785412-39962423-193...@n2.nabble.com
> 
> >
> > wrote:
>
> >  Ignacy wrote:
> > RF gain moves S-meter in my K3 to S5 max. After RF calibration it is
> S9+60,
> > but after power up it is S5 again. Seems something not stored. Looks like
> > the calibration numbers are not stored permanently?
> > Ignacy
> >
> > This is a symptom of an old K3 Utility (circa September).  Load the
> latest
> > Utility and try it again.
> >
> > 73,  Bill
> >
> > --
> >  View message @
> >
> http://elecraft.365791.n2.nabble.com/K3-RF-Gain-calibration-tp4954737p5785412.html
> > To unsubscribe from K3 RF Gain calibration, click here<
> http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=4954737&code=bm85ZUBhcnJsLm5ldHw0OTU0NzM3fC0xMzI0MDI1NjE3
> >.
> >
> >
>
> --
> View this message in context:
> http://elecraft.365791.n2.nabble.com/K3-RF-Gain-calibration-tp4954737p5785685.html
> Sent from the [K3] mailing list archive at Nabble.com.
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[Elecraft] K3: Configuration Storage Porblem

[w1gd]

K3 s/n 1428 
 
Two recent problems that may be related:
 
1.  After the K3 has been powered off for a long time (e.g., over night) and I 
power it on, I can’t get more than 12 watts out.  I checked the configuration 
menu for KPA and it’s normal.  NOTE:  I first noticed this on Friday (11/26) 
about 30 minutes before the start of CQWW Contest when I went t double check 
the presets on my linear.  After a panicked search of the manual and the 
reflector list, I changed from Beta Version 4.22 to 4.14 and it didn’t help.  
As a last resort, I reinstalled the configuration I had saved in the Utility 
and it fixed things (5 whole minutes before the contest start!)  The K3 was on 
for the next 48 hours with no issues.  I turned it off after the contest and 
today, when I turned it on again, the same problem.  Having the radio off for a 
short time (e.g., about 30 minutes has no problem)
 
2. After the K3 has been powered off for a long time (e.g., over night) and I 
turn it on, I get ERR messages (e.g., ERR BP1).  If I keep tapping the band 
switch, I get a series of other ERR messages (e.g., ERR IO3, etc.)  and 
eventually the VFOB frequncy gets displayed.  I thought this was related to the 
random power on error messages Wayne referred to in one of the software fixes, 
but I got this with Version 4.22 as well.
 
It seems to me that my K3 MCU is not retaining some of the configuration data.  
When I run through the configuration menu, I don’t see any errors.  I did a 
quick search of the manual and didn’t find any help.  
 
Any help here?
 
Gerry, W1GD
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[Elecraft] K2 - CQWW CW Contest

[stan levandowski]

My barefoot K2 at 5 watts and my 62' attic doublet with the SG-237 
autocoupler produced 43 countries, 25 states, and six Canadian provinces 
for me.  I operated on 80, 40, 20, and 15.

The K2 performed flawlessly.

Stan Levandowski WB2LQF
HF QRP CW -- Doing more with less for over 50 years!
QCWA #35038   OOTC #4558   NAQCC #4740   SKCC #6488   FISTS #14992
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Re: [Elecraft] K3 Noise Reduction Performance

[David Herring]

So, as a matter of curiosity and not defending anyone's behavior or meaning to 
stir up trouble, how is it that we have come to know T. Smith's identity as 
N6MQL?

David 
AH6TD

Sent from my iPhone

On Nov 29, 2010, at 10:09 AM, "Joe Subich, W4TV"  wrote:

> 
> Where is your real name and call as required by the list policy?
> 
> N6MQL
> ARETSKY, MICHAEL A
> 5543 TIERRA GARDENS LN
> CARMICHAEL, CA 95608
> 
> 
> 
> On 11/29/2010 12:26 AM, The Smiths wrote:
>> 
> 
>> I have to disagree. I have serious QRM at my location and when I use
> settings 2-5 with Med 2 IF on my NR, it cleans up ALL of the electrical
> noise in my area. I ALWAYS drop at least 3 S-Units of noise each time I
> turn mine on. However, if there can be even more improvement than I'm
> all for it.
> 
>> T. Smith
>> 
>>> From: w4...@carolina.rr.com
>>> To: elecraft@mailman.qth.net
>>> Date: Sun, 28 Nov 2010 16:27:56 -0500
>>> Subject: [Elecraft] K3 Noise Reduction Performance
>>> 
>>> I have two K3s and the NR is the same on both. If I had to identify a 
>>> feature on the K3 that needs improvement, I would have to say it is the NR. 
>>> I cannot find a noise reduction setting that is suitable to me. I realize 
>>> this is a subjective, and you would have to compare the K3s noise reduction 
>>> with that of another radio. I have owned the Ten-Tec Omni VII which in my 
>>> opinion has the best NR on SSB without a doubt. I believe it is all in the 
>>> NR programming and how the algorithms are set up. There has been 
>>> considerable improvement from the time the K3 was introduced, but I believe 
>>> there is still room for further improvement. I would like to see noise 
>>> reduction with a minimum loss of signal fidelity. Roy Morris W4WFB
>>> __
>>> 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
>> 
>> __
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Re: [Elecraft] L R volume settings

[Don Wilhelm]

  Don,

If you have manual version D-6 (download it), look on page 37 and also 
at the CONFIG: SUB AF menu item on page 57.

73,
Don W3FPR

On 11/29/2010 2:54 PM, gold...@charter.net wrote:
> Dear Group,
>
> Using sterio headphones, how do you adjust the L R volume levels.
>
> Right now my left headphone is louder than my right and I would like to
> adjust the balance.
>
> I have found how to turn mono vs sterio on and set the equalizer, but
> not the balance.
>
> Any help would be greatly appreciated.
>
> Thanks
> Don KD8NNU
>
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Re: [Elecraft] K3 Noise Reduction Performance

[Joe Subich, W4TV]

Where is your real name and call as required by the list policy?

 N6MQL
 ARETSKY, MICHAEL A
 5543 TIERRA GARDENS LN
 CARMICHAEL, CA 95608



On 11/29/2010 12:26 AM, The Smiths wrote:
>

> I have to disagree. I have serious QRM at my location and when I use
settings 2-5 with Med 2 IF on my NR, it cleans up ALL of the electrical
noise in my area. I ALWAYS drop at least 3 S-Units of noise each time I
turn mine on. However, if there can be even more improvement than I'm
all for it.

> T. Smith
>
>> From: w4...@carolina.rr.com
>> To: elecraft@mailman.qth.net
>> Date: Sun, 28 Nov 2010 16:27:56 -0500
>> Subject: [Elecraft] K3 Noise Reduction Performance
>>
>> I have two K3s and the NR is the same on both. If I had to identify a 
>> feature on the K3 that needs improvement, I would have to say it is the NR. 
>> I cannot find a noise reduction setting that is suitable to me. I realize 
>> this is a subjective, and you would have to compare the K3s noise reduction 
>> with that of another radio. I have owned the Ten-Tec Omni VII which in my 
>> opinion has the best NR on SSB without a doubt. I believe it is all in the 
>> NR programming and how the algorithms are set up. There has been 
>> considerable improvement from the time the K3 was introduced, but I believe 
>> there is still room for further improvement. I would like to see noise 
>> reduction with a minimum loss of signal fidelity. Roy Morris W4WFB
>> __
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>   
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[Elecraft] L R volume settings

[goldtr8]

Dear Group,

Using sterio headphones, how do you adjust the L R volume levels.

Right now my left headphone is louder than my right and I would like to 
adjust the balance.

I have found how to turn mono vs sterio on and set the equalizer, but 
not the balance.

Any help would be greatly appreciated.

Thanks
Don KD8NNU

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Re: [Elecraft] K3 RF Gain calibration

[Ignacy]

Thanks, I will try the new one.
Seems K3 delivers lots of drama due to many changes. But it is also good
that the K3 users are highly advanced and helpful.
Ignacy



On Mon, Nov 29, 2010 at 1:25 PM, Bill W4ZV [via Elecraft] <
ml-node+5785412-39962423-193...@n2.nabble.com
> wrote:

>  Ignacy wrote:
> RF gain moves S-meter in my K3 to S5 max. After RF calibration it is S9+60,
> but after power up it is S5 again. Seems something not stored. Looks like
> the calibration numbers are not stored permanently?
> Ignacy
>
> This is a symptom of an old K3 Utility (circa September).  Load the latest
> Utility and try it again.
>
> 73,  Bill
>
> --
>  View message @
> http://elecraft.365791.n2.nabble.com/K3-RF-Gain-calibration-tp4954737p5785412.html
> To unsubscribe from K3 RF Gain calibration, click 
> here.
>
>

-- 
View this message in context: 
http://elecraft.365791.n2.nabble.com/K3-RF-Gain-calibration-tp4954737p5785685.html
Sent from the [K3] mailing list archive at Nabble.com.
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Re: [Elecraft] K2 APF implementation?

[Ron D'Eau Claire]

I think most will find the APF fits in the scheme of daily operation much as
you found the AF1 does - sometimes it's no help at all and other times it
makes marginal signals great copy. Like any very sharp filter, you must be
sure the tuning is exact! The peak is only a few Hz wide. Where the S/N
ratio is good enough, there's little or no improvement using the filter. 

Elecraft wanted to keep the cost of the mini-modules down as far as possible
to help people gather up useful  bits of equipment on a slender budget.
However one fellow has stepped in to fill that void. I mentioned him in an
earlier e-mail:

http://w8fgu.home.comcast.net/~w8fgu/enclosures.html

I've got a couple of his enclosures and they are very nicely done! 

Ron AC7AC 

-Original Message-
After you mentioned this a couple of weeks ago, Ron, I bought the AF1
and built it in time for CQWW CW this past weekend.  I'm not a strong
CW operator yet, and these contests are a great opportunity for me to
learn by listening.  I thought the AF1 might help, given my antenna
situation.

Much to my surprise, for the first time I had to use the attenuator on
my K1!  The JA's especially were beating down the door; too bad they
couldn't hear me.  Even so, I found plenty of stations that were faint
enough that I wanted to use the AF1.

At first, I thought it didn't work very well, but then I had a few
stations go from "I can puzzle this out in time" to "hey, that was
easy" after turning on the AF1!  Clearly I'm going to have to play
with it more to understand how to adjust it properly, but it does
work.

I also appreciated how I could have it inline and only turn it on when
needed, and even though I'm in the camp that wonders if it would
really be so hard to design the mini modules to fit in to a box, the
rubber feet kept it stable on top of my K1 even when turning it on
without having to hold it.

I consider the AF1 a good purchase that will get better as I learn
more, and another fun build. Thanks for the tip.

73, Byron N6NUL
K1 #2799
AF1, DL1, N-gen, W1, XG2, BL2

On Sun, Nov 28, 2010 at 8:19 PM, Ron D'Eau Claire  wrote:
> Jeff, I have compared the K3's APF with the filter offered in Elecraft's
> AF-1 Active Filter mini-module kit. There is no difference I can hear in
the
> performance. Actually the AF-1 has more flexibility since you have two
> levels of "Q" to choose from, variable gain, and an independent variable
> low-pass filter function.
>
> At $60, it's a great little filter.
>
> For an old vacuum-tube jockey like me it's satisfying to see digital gear
> struggling to do something as well as analog circuits, Hi! I'll hand it to
> Lyle; he succeeded with the APF. It's darn near as good as the AF1.
>
> Ron AC7AC
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of jeff martin
> Sent: Sunday, November 28, 2010 6:37 PM
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] K2 APF implementation?
>
> Any chance we might see an implementation of  APF for the audio-based DSP
of
> the K2? I realize it might require swapping out U3 to implement the
change.
> I would even give up some of the other functionality if adequate memory
> resources don't exist to implement an additional function.
>
> Any interest?
>
> Jeff
> N7KRT
>
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-- 
- Northern California Contest Club
- CU in the 2011 Cal QSO Party 1-2 Oct 2011
- www.cqp.org

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Re: [Elecraft] K2 APF implementation?

[jeff martin]

Good points, Ron. And you have also answered my biggest concern with using the 
AF-1 as an external solution...finding a suitable enclosure (without actually 
rolling my own...I'm lazy, I guess!). The W8FGU enclosures are very cool! I am 
constantly amazed at the number of talented folks that have created neat 
products to enhance the Elecraft kits!

Thanks,

Jeff

--- On Mon, 11/29/10, Ron D'Eau Claire  wrote:

> From: Ron D'Eau Claire 
> Subject: RE: [Elecraft] K2 APF implementation?
> To: "'jeff martin'" , elecraft@mailman.qth.net
> Date: Monday, November 29, 2010, 10:10 AM
> Yeah, it's nice to have it all built
> in, if possible. OTOH, it's nice having
> four independently-adjustable controls for Q, center
> frequency, gain, and
> high-frequency roll-off. 
> 
> And W8FGU makes some neat enclosures for the mini-modules,
> including the
> AF1. 
> 
> http://w8fgu.home.comcast.net/~w8fgu/enclosures.html
> 
> Ron AC7AC
> 
> 
> -Original Message-
> 
> Ron,
> Great idea! I agree that the AF-1 would do the trick, but
> was hoping that
> something integrated into the existing K2 firmware/hardware
> could be
> implemented. If that doesn't pan out, I'll opt for the
> AF-1.
> 
> Jeff 
> 
>      
> 
> 


  
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Re: [Elecraft] K3 Noise Reduction Improvement

[Dan Atchison]

 I'd have to agree with you, Roy.

In a moment of weakness many months ago, I purchased an IC-7600.  While it's a 
nice radio, it is NOT a K3 nor would I ever use it in a contest or try fighting 
a pile-up with it (unless it was the only radio available).  That said, with 
all the 7600's lackluster features, the Noise Reduction (NR) on the ICOM far, 
even greatly exceeds the NR in the K3.  The noise reduction itself, the quality 
of (remaining) signal (QoS), and its ease of use is a marvel and my benchmark 
NR behavior.  While in the K3 you can usually find a decent NR setting, by no 
means is it easily configurable with it's convoluted algorithm scheme nor is 
the resultant QoS as clean.

My opinion only; YMMV.

73,
Dan -- N3ND



 
Date: Sun, 28 Nov 2010 16:27:56 -0500
From: "Roy Morris" 
Subject: [Elecraft] K3 Noise Reduction Performance
To: 


I have two K3s and the NR is the same on both.  If I had to identify a feature 
on the K3 that needs improvement, I would have to say it is the NR.  I cannot 
find a noise reduction setting that is suitable to me.  I realize this is a 
subjective, and you would have to compare the K3s noise reduction with that of 
another radio.  I have owned the Ten-Tec Omni VII which in my opinion has the 
best NR on SSB without a doubt.  I believe it is all in the NR programming and 
how the algorithms are set up.  There has been considerable improvement from 
the 
time the K3 was introduced, but I believe there is still room for further 
improvement.  I would like to see noise reduction with a minimum loss of signal 
fidelity.Roy Morris  W4WFB


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Re: [Elecraft] K3 RF Gain calibration

[Bill W4ZV]

Ignacy wrote:
> 
> RF gain moves S-meter in my K3 to S5 max. After RF calibration it is
> S9+60, but after power up it is S5 again. Seems something not stored.
> Looks like the calibration numbers are not stored permanently?
> Ignacy 
> 

This is a symptom of an old K3 Utility (circa September).  Load the latest
Utility and try it again.

73,  Bill
-- 
View this message in context: 
http://elecraft.365791.n2.nabble.com/K3-RF-Gain-calibration-tp4954737p5785412.html
Sent from the [K3] mailing list archive at Nabble.com.
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Re: [Elecraft] K2 APF implementation?

[Ron D'Eau Claire]

Yeah, it's nice to have it all built in, if possible. OTOH, it's nice having
four independently-adjustable controls for Q, center frequency, gain, and
high-frequency roll-off. 

And W8FGU makes some neat enclosures for the mini-modules, including the
AF1. 

http://w8fgu.home.comcast.net/~w8fgu/enclosures.html

Ron AC7AC


-Original Message-

Ron,
Great idea! I agree that the AF-1 would do the trick, but was hoping that
something integrated into the existing K2 firmware/hardware could be
implemented. If that doesn't pan out, I'll opt for the AF-1.

Jeff 

 

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Re: [Elecraft] [K2] #7040 is alive!

[KW4H]

Congratulations!

On the tilt bail, I've found that it helps greatly to keep the bolts loose
on one leg while fastening the other.  If you fully tighten the bolts on one
side, getting the other side in is a real bear!

And you've discovered the secret to a no-problems build -- take it easy, one
component at a time, and carefully check those component values and the
soldering as you go along.  The build is something to savor and enjoy!

73,

Steve, KW4H

On Mon, Nov 29, 2010 at 12:15 PM, John  wrote:

>
> Incredible! Just had my first contact on my K2. Just built the basic cw rig
> first, as suggested. Thank you Graham, G3XTZ for the 80m contact (not next
> door, 200 miles!) Now for the options!
>
> Only real problem was recording the VCO voltages, when I couldn’t
> understand
> why the readings were the same, as I wound the synthesiser up to 28mHz,
> then
> realised you must use the band buttons, didn’t realise until it failed to
> do
> a CAL PLL telling me it was the wrong band. Getting the bands in order
> again
> was a challenge! The only other challenge was trying to compress the tilt
> bail while you put the screws in! (build up your muscles first!)
>
> Final comments - take your time, check everything as you do it, and as
> others have said, when you feel tired, stop! Result: each stage worked
> first
> time!
>
> Thanks Elecraft for a great project, thanks also to this reflector which I
> had been watching for a while and was very helpful learning from others’
> experiences.
>
> 73, John, G3WWT
>
> --
> View this message in context:
> http://elecraft.365791.n2.nabble.com/K2-7040-is-alive-tp5785160p5785160.html
> Sent from the [K2] mailing list archive at Nabble.com.
> __
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Re: [Elecraft] Garry Surrency Off-line for at least a week

[Ian White GM3SEK]

Eric wrote:
>Gary Surrency (g...@elecraft...) in our support group is ill and will be
>off-line for at least a week. Dale, Richard and several others will be
>handling the increased load on all new support emails for this period.
>But if you have sent Gary an email in the last several days, you may
>need to resend to k3supp...@elecraft.com or supp...@elecraft.com (non-K3
>support).
>

I had sent an e-mail to Gary over the Thanksgiving holiday, but will 
take this opportunity to repeat it publicly:

Thank you, Gary, for stellar support with my K3 problems over the past 
few weeks - another case successfully closed.

Take care, and get well soon.


-- 

73 from Ian GM3SEK
http://www.ifwtech.co.uk/g3sek
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Re: [Elecraft] [K3] Line out, speakers, and L-mix-R settings...

[James Sarte (K2QI)]

I have another question that's somewhat related to my original post.  I know
it has been discussed many times over; that one should avoid using a mono
plug in the SPKRS jack.

What I'd like to know though is this:  Would it be OK to use a mono plug in
either front panel PHONES output, or rear panel PHONE or LINE output without
fear of blowing something up?

Manual says it should be fine, but just want to get confirmation beforehand
that this is OK to do.

Tnx!

-- 
73 de James K2QI
President UNARC/4U1UN
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Re: [Elecraft] K3/SV/SDR-IQ/VSPE

[Larry Phipps]

  I can't speak to SV issues, but almost all issues related to LP-Bridge 
can be traced to a USB-to-serial adapter problem, either with the 
adapter, a self powered USB hub or a driver problem. It is always 
advisable to use a motherboard or PCI board serial port if possible. For 
USB adapters, my experience and that of my users seems to point to a 
preference for adapters with FTDI chipsets. Also, many users have 
reported good success with Digi Edgeport adapters, which can be found 
cheaply on eBay.

Larry N8LP




On 11/29/2010 12:00 PM, elecraft-requ...@mailman.qth.net wrote:
> Date: Sun, 28 Nov 2010 20:18:56 -0800 (PST)
> From: N1JM
> Subject: Re: [Elecraft] K3/SV/SDR-IQ/VSPE
> To:elecraft@mailman.qth.net
> Message-ID:<1291004336158-5783241.p...@n2.nabble.com>
> Content-Type: text/plain; charset=us-ascii
>
>
> K3/SV/SDR-IQ/LP-Bridge  works super on my Win7 PC but on my laptop with
> XP(Macbook Pro with bootcamp) it causes BSOD.
> -- View this message in context: 
> http://elecraft.365791.n2.nabble.com/K3-SV-SDR-IQ-VSPE-tp5782232p5783241.html 
> Sent from the Elecraft mailing list archive at Nabble.com.

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[Elecraft] Garry Surrency Off-line for at least a week

[Eric Swartz - WA6HHQ, Elecraft]

Gary Surrency (g...@elecraft...) in our support group is ill and will be 
off-line for at least a week. Dale, Richard and several others will be 
handling the increased load on all new support emails for this period.  
But if you have sent Gary an email in the last several days, you may 
need to resend to k3supp...@elecraft.com or supp...@elecraft.com (non-K3 
support).

We apologize for any delays in response this may cause.

73, Eric   WA6HHQ
www.elecraft.com


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[Elecraft] [K2] #7040 is alive!

[John]

Incredible! Just had my first contact on my K2. Just built the basic cw rig
first, as suggested. Thank you Graham, G3XTZ for the 80m contact (not next
door, 200 miles!) Now for the options! 

Only real problem was recording the VCO voltages, when I couldn’t understand
why the readings were the same, as I wound the synthesiser up to 28mHz, then
realised you must use the band buttons, didn’t realise until it failed to do
a CAL PLL telling me it was the wrong band. Getting the bands in order again
was a challenge! The only other challenge was trying to compress the tilt
bail while you put the screws in! (build up your muscles first!) 

Final comments - take your time, check everything as you do it, and as
others have said, when you feel tired, stop! Result: each stage worked first
time!

Thanks Elecraft for a great project, thanks also to this reflector which I
had been watching for a while and was very helpful learning from others’
experiences.

73, John, G3WWT

-- 
View this message in context: 
http://elecraft.365791.n2.nabble.com/K2-7040-is-alive-tp5785160p5785160.html
Sent from the [K2] mailing list archive at Nabble.com.
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Re: [Elecraft] Love/Hate your K3

[Ian White GM3SEK]

John Lemay wrote:
>
>TMP connectors can easily be made up with nothing more than a soldering 
>iron (for the centre pin) and pliers (for the outer). It's a one-way 
>trip - they're not designed to be undone.
>
>If you have an intermittent I think it's a fair bet that one of the 
>pins looks like it is soldered but the solder may not have taken to the 
>inner conductor.
>
>However, I don't know of a UK source for TMP, and if anyone does, I'd 
>be very interested to know !
>

Icom UK have been helpful with these in the past.


-- 

73 from Ian GM3SEK
http://www.ifwtech.co.uk/g3sek
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Re: [Elecraft] K3 Noise Reduction Performance

[k2qi . nyc]

NB works well... It's the NR that could use improvement. 

Tnx,
Jim K2QI
Sent via BlackBerry from T-Mobile

-Original Message-
From: The Smiths 
Sender: elecraft-boun...@mailman.qth.net
Date: Mon, 29 Nov 2010 05:26:29 
To: ; Elecraft Reflector
Subject: Re: [Elecraft] K3 Noise Reduction Performance


I have to disagree.  I have serious QRM at my location and when I use settings 
2-5 with Med 2 IF on my NR, it cleans up ALL of the electrical noise in my 
area.  I ALWAYS drop at least 3 S-Units of noise each time I turn mine on.  
However, if there can be even more improvement than I'm all for it.
 
T. Smith
 
> From: w4...@carolina.rr.com
> To: elecraft@mailman.qth.net
> Date: Sun, 28 Nov 2010 16:27:56 -0500
> Subject: [Elecraft] K3 Noise Reduction Performance
> 
> I have two K3s and the NR is the same on both. If I had to identify a feature 
> on the K3 that needs improvement, I would have to say it is the NR. I cannot 
> find a noise reduction setting that is suitable to me. I realize this is a 
> subjective, and you would have to compare the K3s noise reduction with that 
> of another radio. I have owned the Ten-Tec Omni VII which in my opinion has 
> the best NR on SSB without a doubt. I believe it is all in the NR programming 
> and how the algorithms are set up. There has been considerable improvement 
> from the time the K3 was introduced, but I believe there is still room for 
> further improvement. I would like to see noise reduction with a minimum loss 
> of signal fidelity. Roy Morris W4WFB
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Re: [Elecraft] K3 Noise Reduction Performance

[The Smiths]

I have to disagree.  I have serious QRM at my location and when I use settings 
2-5 with Med 2 IF on my NR, it cleans up ALL of the electrical noise in my 
area.  I ALWAYS drop at least 3 S-Units of noise each time I turn mine on.  
However, if there can be even more improvement than I'm all for it.
 
T. Smith
 
> From: w4...@carolina.rr.com
> To: elecraft@mailman.qth.net
> Date: Sun, 28 Nov 2010 16:27:56 -0500
> Subject: [Elecraft] K3 Noise Reduction Performance
> 
> I have two K3s and the NR is the same on both. If I had to identify a feature 
> on the K3 that needs improvement, I would have to say it is the NR. I cannot 
> find a noise reduction setting that is suitable to me. I realize this is a 
> subjective, and you would have to compare the K3s noise reduction with that 
> of another radio. I have owned the Ten-Tec Omni VII which in my opinion has 
> the best NR on SSB without a doubt. I believe it is all in the NR programming 
> and how the algorithms are set up. There has been considerable improvement 
> from the time the K3 was introduced, but I believe there is still room for 
> further improvement. I would like to see noise reduction with a minimum loss 
> of signal fidelity. Roy Morris W4WFB
> __
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Re: [Elecraft] Love/Hate your K3

[John Lemay]

Hi Stewart

TMP connectors can easily be made up with nothing more than a soldering iron
(for the centre pin) and pliers (for the outer). It's a one-way trip -
they're not designed to be undone.

If you have an intermittent I think it's a fair bet that one of the pins
looks like it is soldered but the solder may not have taken to the inner
conductor.

However, I don't know of a UK source for TMP, and if anyone does, I'd be
very interested to know !

Regards

John


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of GW0ETF
Sent: 29 November 2010 16:00
To: elecraft@mailman.qth.net
Subject: [Elecraft] Love/Hate your K3


Three hours into cqww the output power on my K3 started fluctuating wildly
and then went to zero. It happened last week too but recovered but this time
it looked final; after significant preparations for the contest and in the
middle of a freezing night I wasn't a happy person.

I'd sort of resigned myself to waiting a few hours and then driving 35 miles
to hopefully borrow a K3 from a friend who wouldn't be doing the contest;
first though I'd quickly check the reflector and to my delight up popped a
message describing this very fault, caused by the TMP cable coming loose
from the J7 connector on the KREF3 board (thanks N3CAQ..!). Off came the lid
to reveal a well seated cable but a nudge on J7 with a pen brought the rf
back to life! Mightily relieved I carried on and things were fine for a
couple of hours until the same thing happened; this time I removed the 2nd
receiver and took out the cable to test it and sure enough the meter across
the centre pins showed intermittent continuitygently flexing the cable
caused the connection to come and go.

Interested to speculate how long the cable has been faulty; this ancient
model (#145) has definitely showed power fluctuations in the past on
occasion but I've assumed a software source (can't explain it..? must be
software..!) so maybe it's been like it from new, don't know. The good news
was I remembered having a spare new TMP cable left over from the KRX3
fitting which I used and all was then back to normality. This now begs the
question of getting replacement TMP cables which I will pose to Aptos since
I assume they are custom made and I can't imagine a non-specialised crimping
tool doing the job.

Moral of this tale is check the reflector first, and watch your connections;
the few problems I've had over the years (including random error messages)
have all been traced to less than perfect contacts of one sort or another.

CQWW was excellent though I am considering claiming for an hours worth of
points from Aptos ;-) Thanks to all those calls familiar from here for the
Qs on 40m - I was sosb low power.

Stewart Rolfe, GW0ETF  
-- 
View this message in context:
http://elecraft.365791.n2.nabble.com/Love-Hate-your-K3-tp5784838p5784838.htm
l
Sent from the Elecraft mailing list archive at Nabble.com.
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__ Information from ESET NOD32 Antivirus, version of virus signature
database 5658 (20101129) __

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com


 

__ Information from ESET NOD32 Antivirus, version of virus signature
database 5658 (20101129) __

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com
 

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Re: [Elecraft] K3 RF Gain calibration

[Ignacy]

RF gain moves S-meter in my K3 to S5 max. After RF calibration it is S9+60,
but after power up it is S5 again. Seems something not stored. Looks like
the calibration numbers are not stored permanently?
Ignacy 
-- 
View this message in context: 
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Re: [Elecraft] K3-P3 duo result in tx keying via VFO turning for 30 seconds

[Ignacy]

I use Microham CW keyer with N1MM. Twice during CQWW, the keyer started
sending fast low-weight CW and could not be easily stopped. Restarting N1MM
did not help; keying was still erratic. Strangely, keying from within the
microham software was fine. Restarting the microham software cured the
problem. 

I attributed it to RF feedback although I never experienced one before with
Microham devices. 
This was my first contest with P3 and 4.22.

Ignacy
-- 
View this message in context: 
http://elecraft.365791.n2.nabble.com/K3-P3-duo-result-in-tx-keying-via-VFO-turning-for-30-seconds-tp5781174p5784841.html
Sent from the [K3] mailing list archive at Nabble.com.
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[Elecraft] Love/Hate your K3

[GW0ETF]

Three hours into cqww the output power on my K3 started fluctuating wildly
and then went to zero. It happened last week too but recovered but this time
it looked final; after significant preparations for the contest and in the
middle of a freezing night I wasn't a happy person.

I'd sort of resigned myself to waiting a few hours and then driving 35 miles
to hopefully borrow a K3 from a friend who wouldn't be doing the contest;
first though I'd quickly check the reflector and to my delight up popped a
message describing this very fault, caused by the TMP cable coming loose
from the J7 connector on the KREF3 board (thanks N3CAQ..!). Off came the lid
to reveal a well seated cable but a nudge on J7 with a pen brought the rf
back to life! Mightily relieved I carried on and things were fine for a
couple of hours until the same thing happened; this time I removed the 2nd
receiver and took out the cable to test it and sure enough the meter across
the centre pins showed intermittent continuitygently flexing the cable
caused the connection to come and go.

Interested to speculate how long the cable has been faulty; this ancient
model (#145) has definitely showed power fluctuations in the past on
occasion but I've assumed a software source (can't explain it..? must be
software..!) so maybe it's been like it from new, don't know. The good news
was I remembered having a spare new TMP cable left over from the KRX3
fitting which I used and all was then back to normality. This now begs the
question of getting replacement TMP cables which I will pose to Aptos since
I assume they are custom made and I can't imagine a non-specialised crimping
tool doing the job.

Moral of this tale is check the reflector first, and watch your connections;
the few problems I've had over the years (including random error messages)
have all been traced to less than perfect contacts of one sort or another.

CQWW was excellent though I am considering claiming for an hours worth of
points from Aptos ;-) Thanks to all those calls familiar from here for the
Qs on 40m - I was sosb low power.

Stewart Rolfe, GW0ETF  
-- 
View this message in context: 
http://elecraft.365791.n2.nabble.com/Love-Hate-your-K3-tp5784838p5784838.html
Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] Plasma TV and other OT junque

[Amateur Radio Operator N5GE]

Seems to me I could do that by browsing the list of new emails in my email app
and delete the ones I don't want to read.  Am I missing something here?

I don't mind the number of emails, but do not like having to browse for the ones
I'm not interested in.  The filters perform that task for me, so I never see
them.

73,

Tom Childers
Radio Amateur N5GE
Licensed since 1976
QCWA Member 35102
ARRL Life Member


On Sun, 28 Nov 2010 20:27:22 -0800 (PST), N1JM   wrote:

>
>The best way to avoid email overload is to stop email delivery and go to the
>web and view all the posts in NABBLE. You can pick and choose what you want
>to read.

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[Elecraft] [K3] APF in CQWW

[K5WA]

I loaded 4.22 for the CQWW CW this weekend and had a great time playing with
it.  2 of my beverages are not working so I originally thought I would just
need APF where my missing beverages were out, but I ended up trying it in
many 80 and 160 situations and found it extremely useful.  At first, I
didn't read the instructions well enough to turn the correct knob to adjust
APF, but I finally figured it out.  It REALLY brought signals out of the
noise that were hard to copy.  Amazing!  It helped me get 72 countries on 80
and 52 countries on 160 this weekend in a single op effort.  My only request
would be to cut the ringing/gain (whichever applies) back just a bit but it
really adds contacts to your score.  Maybe the gain could be user adjustable
in a menu?

Great new tool!

Bob K5WA

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Re: [Elecraft] K2 APF implementation?

[jeff martin]

My thinking was to ustilize the existing KDSP2 menu structure to adjust the 
filter. Something like add a CW filter selection of "APF" to the existing 
selections, and then menus to select center freq, Q and gain.
One thing I have done to emulate this is to set the existing CW filters to 
various bandwidths, and then with the center freq at my chosen sidetone pitch, 
increase the gain setting to peak the filter. Sometimes I'll turn on the noise 
reduction as well. In some cases it has been a bit startling how a Q2 or 3 
signal can become comfortable copy. The only problem with the method is that it 
requires a lot of button pushing and you cannot really store the resulting 
filter (the gain control affects all of the CW filters) as a separate entity.

--- On Mon, 11/29/10, Ken Alexander  wrote:

> From: Ken Alexander 
> Subject: Re: [Elecraft] K2 APF implementation?
> To: elecraft@mailman.qth.net, "Ron D'Eau Claire" , "jeff 
> martin" 
> Date: Monday, November 29, 2010, 6:47 AM
> When you consider that the K2's
> buttons have two and sometimes three  different
> functions already (there's a clock in there?  Really?)
> I would prefer to have an outboard audio filter like the
> AF-1.  Plus you need a knob or two and I don't think it
> would be very easy to retrofit extra knob functions into the
> existing radio.
> 
> I'd like one too, but I don't think it's practical in the
> K2.  Maybe in the K2.1!   8-)
> 
> 73,
> 
> Ken Alexander
> VE3HLS
> 
> 
> 
> --- On Mon, 11/29/10, jeff martin 
> wrote:
> 
> > From: jeff martin 
> > Subject: Re: [Elecraft] K2 APF implementation?
> > To: elecraft@mailman.qth.net,
> "Ron D'Eau Claire" 
> > Date: Monday, November 29, 2010, 8:47 AM
> > Ron,
> > Great idea! I agree that the AF-1 would do the trick,
> but
> > was hoping that something integrated into the existing
> K2
> > firmware/hardware could be implemented. If that
> doesn't pan
> > out, I'll opt for the AF-1.
> > 
> > Jeff 
> > 
> > --- On Sun, 11/28/10, Ron D'Eau Claire 
> > wrote:
> > 
> > > From: Ron D'Eau Claire 
> > > Subject: RE: [Elecraft] K2 APF implementation?
> > > To: "'jeff martin'" ,
> > elecraft@mailman.qth.net
> > > Date: Sunday, November 28, 2010, 8:19 PM
> > > Jeff, I have compared the K3's APF
> > > with the filter offered in Elecraft's
> > > AF-1 Active Filter mini-module kit. There is no
> > difference
> > > I can hear in the
> > > performance. Actually the AF-1 has more
> flexibility
> > since
> > > you have two
> > > levels of "Q" to choose from, variable gain, and
> an
> > > independent variable
> > > low-pass filter function. 
> > > 
> > > At $60, it's a great little filter.
> > > 
> > > For an old vacuum-tube jockey like me it's
> satisfying
> > to
> > > see digital gear
> > > struggling to do something as well as analog
> circuits,
> > Hi!
> > > I'll hand it to
> > > Lyle; he succeeded with the APF. It's darn near
> as
> > good as
> > > the AF1.
> > > 
> > > Ron AC7AC
> > > 
> > > -Original Message-
> > > From: elecraft-boun...@mailman.qth.net
> > > [mailto:elecraft-boun...@mailman.qth.net]
> > > On Behalf Of jeff martin
> > > Sent: Sunday, November 28, 2010 6:37 PM
> > > To: elecraft@mailman.qth.net
> > > Subject: [Elecraft] K2 APF implementation?
> > > 
> > > Any chance we might see an implementation of 
> APF
> > for
> > > the audio-based DSP of
> > > the K2? I realize it might require swapping out
> U3 to
> > > implement the change.
> > > I would even give up some of the other
> functionality
> > if
> > > adequate memory
> > > resources don't exist to implement an additional
> > function.
> > > 
> > > Any interest?
> > > 
> > > Jeff
> > > N7KRT
> > > 
> > > 
> > 
> > 
> >       
> >
> __
> > 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
> >
> 


  
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Re: [Elecraft] K2 APF implementation?

[Ken Alexander]

When you consider that the K2's buttons have two and sometimes three  different 
functions already (there's a clock in there?  Really?) I would prefer to have 
an outboard audio filter like the AF-1.  Plus you need a knob or two and I 
don't think it would be very easy to retrofit extra knob functions into the 
existing radio.

I'd like one too, but I don't think it's practical in the K2.  Maybe in the 
K2.1!   8-)

73,

Ken Alexander
VE3HLS



--- On Mon, 11/29/10, jeff martin  wrote:

> From: jeff martin 
> Subject: Re: [Elecraft] K2 APF implementation?
> To: elecraft@mailman.qth.net, "Ron D'Eau Claire" 
> Date: Monday, November 29, 2010, 8:47 AM
> Ron,
> Great idea! I agree that the AF-1 would do the trick, but
> was hoping that something integrated into the existing K2
> firmware/hardware could be implemented. If that doesn't pan
> out, I'll opt for the AF-1.
> 
> Jeff 
> 
> --- On Sun, 11/28/10, Ron D'Eau Claire 
> wrote:
> 
> > From: Ron D'Eau Claire 
> > Subject: RE: [Elecraft] K2 APF implementation?
> > To: "'jeff martin'" ,
> elecraft@mailman.qth.net
> > Date: Sunday, November 28, 2010, 8:19 PM
> > Jeff, I have compared the K3's APF
> > with the filter offered in Elecraft's
> > AF-1 Active Filter mini-module kit. There is no
> difference
> > I can hear in the
> > performance. Actually the AF-1 has more flexibility
> since
> > you have two
> > levels of "Q" to choose from, variable gain, and an
> > independent variable
> > low-pass filter function. 
> > 
> > At $60, it's a great little filter.
> > 
> > For an old vacuum-tube jockey like me it's satisfying
> to
> > see digital gear
> > struggling to do something as well as analog circuits,
> Hi!
> > I'll hand it to
> > Lyle; he succeeded with the APF. It's darn near as
> good as
> > the AF1.
> > 
> > Ron AC7AC
> > 
> > -Original Message-
> > From: elecraft-boun...@mailman.qth.net
> > [mailto:elecraft-boun...@mailman.qth.net]
> > On Behalf Of jeff martin
> > Sent: Sunday, November 28, 2010 6:37 PM
> > To: elecraft@mailman.qth.net
> > Subject: [Elecraft] K2 APF implementation?
> > 
> > Any chance we might see an implementation of  APF
> for
> > the audio-based DSP of
> > the K2? I realize it might require swapping out U3 to
> > implement the change.
> > I would even give up some of the other functionality
> if
> > adequate memory
> > resources don't exist to implement an additional
> function.
> > 
> > Any interest?
> > 
> > Jeff
> > N7KRT
> > 
> > 
> 
> 
>       
> __
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> Post: mailto:Elecraft@mailman.qth.net
> 
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> Please help support this email list: http://www.qsl.net/donate.html
> 
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Re: [Elecraft] K3 keying an Alpha 91

[Bob Naumann]

No interface necessary.

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of georgek...@aol.com
Sent: Monday, November 29, 2010 8:01 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3 keying an Alpha 91

I have been invited to operate at V48M with my K3 where an Alpha 91 will be 
 the amp.  Can I key the Alpha 91 directly from the K3's PTT line, or will 
I  need a keying interface to protect the K3?
 
73, George.
 
George  Wagner, K5KG
Sarasota, FL 
941-400-1960  cell
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[Elecraft] K3 keying an Alpha 91

[Georgek5kg]

I have been invited to operate at V48M with my K3 where an Alpha 91 will be 
 the amp.  Can I key the Alpha 91 directly from the K3's PTT line, or will 
I  need a keying interface to protect the K3?
 
73, George.
 
George  Wagner, K5KG
Sarasota, FL 
941-400-1960  cell
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Re: [Elecraft] K2 APF implementation?

[jeff martin]

Ron,
Great idea! I agree that the AF-1 would do the trick, but was hoping that 
something integrated into the existing K2 firmware/hardware could be 
implemented. If that doesn't pan out, I'll opt for the AF-1.

Jeff 

--- On Sun, 11/28/10, Ron D'Eau Claire  wrote:

> From: Ron D'Eau Claire 
> Subject: RE: [Elecraft] K2 APF implementation?
> To: "'jeff martin'" , elecraft@mailman.qth.net
> Date: Sunday, November 28, 2010, 8:19 PM
> Jeff, I have compared the K3's APF
> with the filter offered in Elecraft's
> AF-1 Active Filter mini-module kit. There is no difference
> I can hear in the
> performance. Actually the AF-1 has more flexibility since
> you have two
> levels of "Q" to choose from, variable gain, and an
> independent variable
> low-pass filter function. 
> 
> At $60, it's a great little filter.
> 
> For an old vacuum-tube jockey like me it's satisfying to
> see digital gear
> struggling to do something as well as analog circuits, Hi!
> I'll hand it to
> Lyle; he succeeded with the APF. It's darn near as good as
> the AF1.
> 
> Ron AC7AC
> 
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net]
> On Behalf Of jeff martin
> Sent: Sunday, November 28, 2010 6:37 PM
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] K2 APF implementation?
> 
> Any chance we might see an implementation of  APF for
> the audio-based DSP of
> the K2? I realize it might require swapping out U3 to
> implement the change.
> I would even give up some of the other functionality if
> adequate memory
> resources don't exist to implement an additional function.
> 
> Any interest?
> 
> Jeff
> N7KRT
> 
> 


  
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[Elecraft] Winford Engineering

[Mike Harris]

G'day,

Many thanks to all who replied to my query.

Regards,

Mike VP8NO
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Re: [Elecraft] Diversity Receive as Noise Canceling?

[Bill W4ZV]

la3rk wrote:
> 
> Check the following pages www.pa0sim.nl. As far as I can tell this
> gentleman has done exactly what you suggest, ie he used two K2 receivers
> phaselocked and each fed with separate antennas. Output to separate AF
> channels and software to null noise by phase and amplitude settings. His
> approach seems better than the RF approach (MFJ noise canceller) as the
> software seems to be able to use different phase angles for different
> frequencies. Some of the audio samples on the web site are impressive.
> 
> In theory the same setup should be possible on a K3 with a phaselocked
> subreceiver and each receiver fed from separate antennas.
> 
> Further, in theory you could think of some internal software in the K3
> where the subreceiver tune knob controls main and sub rx phase difference,
> the amplitude is already in control by the volume knobs. If this works, we
> could avoid an MFJ box or similar as the K3 then is a noise canceller in
> itself. The only difference being that noise cancelling is done at AF
> frequencies.
> 
> 73 de LA3RK Olaf
> 

I believe the problem with attempting to do this internally in the K3 is
that, while the VCOs are phase locked on a given frequency, the phase shift
is not predictable if you touch the VFO.  In other words, you could adjust
phase cancellation on one frequency, but it would need to be readjusted
every time you touched the VFO.  I asked Lyle about this a few years ago and
I recall that was what he said.

73,  Bill


-- 
View this message in context: 
http://elecraft.365791.n2.nabble.com/Diversity-Receive-as-Noise-Canceling-tp5782138p5784236.html
Sent from the [K3] mailing list archive at Nabble.com.
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Re: [Elecraft] Plasma TV Noise any ideas on how to filter it out.

[Dale Putnam]

I'll certainly second this suggestion, especially in concideration that the 
160m test is coming, and the lack of 
hearing by many is extremely one sided, compared to the amount of signal from 
some of the stations.
 Some of the stations would benefit immensely from this addition. However, I 
would certainly think that there would be a 
market for this for the K3 along with the K2. 
  

--... ...-- Dale - WC7S in Wy




> On Topic note - considering the potential for assisting QRP operations, 
> it seems to me that this type of unit would be a good candidate for an 
> Elecraft kit. I know I would like one in a footprint small enough to 
> carry around with my K2. 
> 
> 
> - Jim, KL7CC
> 
> 
> 
  
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[Elecraft] Re： KPA-500

[Johnny Siu]

Hello Gary,

I also like to know the time table.  Otherwise, I will go for SPE Expert 1k-fa.
 cheers, 


Johnny VR2XMC 



- 郵件原件 
寄件人﹕ Gary Gregory 
收件人﹕ elecraft@mailman.qth.net
傳送日期﹕ 2010/11/29 (一) 7:01:27 PM
主題： [Elecraft] KPA-500

Seasons Greetings,

Is there any further word on a possible release date/month for the 'new'
tuner?

Just curious as I could sure use one to make portable set-up a little easier
for me.

Regards
Gary



-- 
Gary
VK4FD - Motorhome Mobile
http://www.qsl.net/vk4fd/
K3 #679, P3 #546



  
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[Elecraft] KPA-500

[Gary Gregory]

Seasons Greetings,

Is there any further word on a possible release date/month for the 'new'
tuner?

Just curious as I could sure use one to make portable set-up a little easier
for me.

Regards
Gary



-- 
Gary
VK4FD - Motorhome Mobile
http://www.qsl.net/vk4fd/
K3 #679, P3 #546
For everything else there's Mastercard!!!
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