Re: [Elecraft] linking K3 with PC with blue tooth

[Gary Gregory]

Neat device, shame we couldn't do audio as well..:-(

Gary

On Tue, Dec 14, 2010 at 1:23 PM, Gary  wrote:

> Yes. Search for IOGEAR GBS301.
> Gary
> N6LRV
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Johnny Siu
> Sent: Monday, December 13, 2010 5:27 AM
> To: Elecraft
> Subject: [Elecraft] linking K3 with PC with blue tooth
>
> Hello Group,
>
> We now have either RS232 or USB converter to link K3 with the computer.  Is
> there a way to link K3 with the computer by blue tooth?
>
>
>  cheers,
>
>
> Johnny VR2XMC
>
>
>
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-- 
Gary
VK4FD - Motorhome Mobile
http://www.qsl.net/vk4fd/
K3 #679, P3 #546
For everything else there's Mastercard!!!
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[Elecraft] K3 Memory Editor

[David Pratt]

I have been trying to use the K3 Memory Editor but am having a problem 
with it when trying to set the Repeater Offset on 50 MHz (6 meters) to 
+0.5 (as it is in the UK).  Reading from my K3, the Offset field in the 
editor is blank.  If I enter +0.5 there and then send it to the K3 it 
sets my K3 to +0.6.

Is the Repeater Offset on 6 meters +0.6 in the USA?  If so, can a +0.5 
offset provision be made in the Memory Editor please?

73
-- 
David G4DMP
Leeds, England, UK
--



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Re: [Elecraft] K3 in ARRL10

[Jorge Diez - CX6VM]

Hello,

Sorry for the delay, but I was in a 6 hours drive trip yesterday.

After reading the emails, I stopped at AC7AC email. I am very sure that I
have band noise. I heard a noticeable SH that I didn´t heard in
the TS850. I can do some records later this week when I go back to the
station.

My setup is a ArraySolution sixpack, so I switch the 10 mts position to the
K3 and TS850.  The radios are connected to different models of amps and swr
meters, but I don´t know if this will affect.

I didn´t use the PRE.

73,
Jorge
CX6VM/CW5W



-Mensaje original-
De: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] En nombre de w...@w5ov.com
Enviado el: Lunes, 13 de Diciembre de 2010 04:03 p.m.
Para: John_N1JM
CC: elecraft@mailman.qth.net
Asunto: Re: [Elecraft] K3 in ARRL10

I operated the 10m contest this weekend with my K3 and I did have the
preamp on. In that condition, I heard a lot more than apparently could
hear me.

If this could be quantified some way, perhaps we could get away from just
comparing opinions?

de W5OV

>
> Even though I do get a rise in band noise going from dummy load to
> antenna, I
> still hear weak signals on my 480 that I don't hear on the K3 on 10 meters
> SSB. Not sure about cw (what's cw?) :-). Assuming my K3 is set up
> properly,
> I would hate to crank up the IF gain just for 10 meters.
> --
> View this message in context:
> http://elecraft.365791.n2.nabble.com/K3-in-ARRL10-tp5830988p5831388.html
> Sent from the Elecraft mailing list archive at Nabble.com.
> __
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> Please help support this email list: http://www.qsl.net/donate.html
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Re: [Elecraft] Audio dropout

[Ken Wagner K3IU]

G'morning, Tony:
With the NR turned ON, I experience a 
momentary reduction in audio when 
turning the SubRx ON. With NR turned 
OFF, there is no reduction in audio when 
turning the SubRx ON.
73, Ken K3IU
~~~
On 12/13/2010 9:55 PM, Tony Estep wrote:
> On Mon, Dec 13, 2010 at 7:32 PM, Luis V. Romero  wrote:
>
>> ...that annoying momentary dropout in the audio...
>
>   The momentary dropout that bugs me is the one that occurs when you turn on
> Sub. As everybody knows, listening to the DX on VFO A and the pileup on VFO
> B is the key to working a lot of DX with modest power and a wire. The K3 is
> the best at this in  many ways, but it has the unfortunate habit of
> observing a moment of silence when the Sub button is pushed. I like to turn
> Sub off at times to get rid of the 3db splitter loss, and every time I turn
> it back on to check the pile the radio exhibits this annoying trait. Can
> this be fixed in firmware someday?
>
> 73 Tony KT0NY
> __
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[Elecraft] Res: Re: K3 in ARRL10

[py5eg]

Hi Jorge
Very interesting observation on your K3 performance
I think someting strange  is happening with your K3.
Best 73 and congratulations for the score
73
Oms PY5EG
Enviado pelo meu aparelho BlackBerry da Claro

-Original Message-
From: "Jorge Diez - CX6VM" 
Sender: elecraft-boun...@mailman.qth.net
Date: Tue, 14 Dec 2010 08:53:13 
To: ; 'John_N1JM'
Cc: 
Subject: Re: [Elecraft] K3 in ARRL10

Hello,

Sorry for the delay, but I was in a 6 hours drive trip yesterday.

After reading the emails, I stopped at AC7AC email. I am very sure that I
have band noise. I heard a noticeable SH that I didn´t heard in
the TS850. I can do some records later this week when I go back to the
station.

My setup is a ArraySolution sixpack, so I switch the 10 mts position to the
K3 and TS850.  The radios are connected to different models of amps and swr
meters, but I don´t know if this will affect.

I didn´t use the PRE.

73,
Jorge
CX6VM/CW5W



-Mensaje original-
De: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] En nombre de w...@w5ov.com
Enviado el: Lunes, 13 de Diciembre de 2010 04:03 p.m.
Para: John_N1JM
CC: elecraft@mailman.qth.net
Asunto: Re: [Elecraft] K3 in ARRL10

I operated the 10m contest this weekend with my K3 and I did have the
preamp on. In that condition, I heard a lot more than apparently could
hear me.

If this could be quantified some way, perhaps we could get away from just
comparing opinions?

de W5OV

>
> Even though I do get a rise in band noise going from dummy load to
> antenna, I
> still hear weak signals on my 480 that I don't hear on the K3 on 10 meters
> SSB. Not sure about cw (what's cw?) :-). Assuming my K3 is set up
> properly,
> I would hate to crank up the IF gain just for 10 meters.
> --
> View this message in context:
> http://elecraft.365791.n2.nabble.com/K3-in-ARRL10-tp5830988p5831388.html
> Sent from the Elecraft mailing list archive at Nabble.com.
>__
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> Please help support this email list: http://www.qsl.net/donate.html
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Re: [Elecraft] K3 Memory Editor

[Dick Dievendorff]

The intent was to allow entry of an arbitrary offset by typing it in. I'll add 
0.5 to the stock table so that it also appears in the initial pull-down

73 de Dick, K6KR

On Dec 14, 2010, at 0:50, David Pratt  wrote:

> I have been trying to use the K3 Memory Editor but am having a problem 
> with it when trying to set the Repeater Offset on 50 MHz (6 meters) to 
> +0.5 (as it is in the UK).  Reading from my K3, the Offset field in the 
> editor is blank.  If I enter +0.5 there and then send it to the K3 it 
> sets my K3 to +0.6.
> 
> Is the Repeater Offset on 6 meters +0.6 in the USA?  If so, can a +0.5 
> offset provision be made in the Memory Editor please?
> 
> 73
> -- 
> David G4DMP
> Leeds, England, UK
> --
> 
> 
> 
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Re: [Elecraft] Res: Re: K3 in ARRL10

[Ignacy]

Initially my K3 copied much worse than IC-7000. Turned out that by mistake I
pressed the RX ANT button and was using K9AY as a receive antenna. 
After changing, K3 copied slightly better than IC-7000. 
Previously, I upped gain on the 400 Hz filter. 
Ignacy

-- 
View this message in context: 
http://elecraft.365791.n2.nabble.com/K3-in-ARRL10-tp5830988p5834380.html
Sent from the [K3] mailing list archive at Nabble.com.
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[Elecraft] K2 Power Supply

[Paul Agoglia]

I am in the process of assembly of a K2, working on the Front Panel Board.  As 
I move closer to the testing stage (probably another month or so) I am starting 
to think about how the unit is powered.  I am guessing that there is not an 
internal power supply.  I also did not order the battery option.  What 
suggestions are out there for powering the K2?  By the way, I do have the 100 
watt option, in case that plays a role in choosing a power supply.

I am willing to consider kit power supplies, so any suggestions for pre built 
and kits are welcome.

73 de WN2K
Paul Agoglia
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Re: [Elecraft] Audio dropout

[Guy Olinger K2AV]

Well, this is very interesting.

While I haven't tried ALL the NR settings, I'm STILL not able to get a
dropout with NR turned on either.

Tony, Ken, can you supply me with a complete list of all your settings
when this happens to see if there is some combination of settings that
will cause the dropout on my K3.  In particular all your AGC settings
from CONFIG: menu.  And everything on the front panel you have set.

Perhaps there is a certain combination that introduces the effect.

If you could estimate the length of the drop out in milliseconds, what
would it be?

73, Guy.

On Tue, Dec 14, 2010 at 5:40 AM, Ken Wagner K3IU  wrote:
> G'morning, Tony:
> With the NR turned ON, I experience a
> momentary reduction in audio when
> turning the SubRx ON. With NR turned
> OFF, there is no reduction in audio when
> turning the SubRx ON.
> 73, Ken K3IU
> ~~~
> On 12/13/2010 9:55 PM, Tony Estep wrote:
>> On Mon, Dec 13, 2010 at 7:32 PM, Luis V. Romero  wrote:
>>
>>> ...that annoying momentary dropout in the audio...
>>
>>   The momentary dropout that bugs me is the one that occurs when you turn on
>> Sub. As everybody knows, listening to the DX on VFO A and the pileup on VFO
>> B is the key to working a lot of DX with modest power and a wire. The K3 is
>> the best at this in  many ways, but it has the unfortunate habit of
>> observing a moment of silence when the Sub button is pushed. I like to turn
>> Sub off at times to get rid of the 3db splitter loss, and every time I turn
>> it back on to check the pile the radio exhibits this annoying trait. Can
>> this be fixed in firmware someday?
>>
>> 73 Tony KT0NY
>> __
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>>
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Re: [Elecraft] Res: Re: K3 in ARRL10

[Ken Roberson]

Ignacy,

That's an easy thing to do , been there.

73 Ken K5DNL
-


--- On Tue, 12/14/10, Ignacy  wrote:

> From: Ignacy 
> Subject: Re: [Elecraft] Res: Re:  K3 in ARRL10
> To: elecraft@mailman.qth.net
> Date: Tuesday, December 14, 2010, 8:51 AM
> 
> Initially my K3 copied much worse than IC-7000. Turned out
> that by mistake I
> pressed the RX ANT button and was using K9AY as a receive
> antenna. 
> After changing, K3 copied slightly better than IC-7000. 
> Previously, I upped gain on the 400 Hz filter. 
> Ignacy
> 
> -- 
> View this message in context: 
> http://elecraft.365791.n2.nabble.com/K3-in-ARRL10-tp5830988p5834380.html
> Sent from the [K3] mailing list archive at Nabble.com.
> __
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Re: [Elecraft] Audio dropout

[Ken K3IU]

G'morning, Guy:

CW Mode, 400 Hz bandwidth with 400Hz filter, AGC-F, abt S3 
noise level, NR ON, NR setting="NR F 1--2"

Guess about a half second. Not a complete audio reduction to 
no sound at all, but a perceptible momentary reduction of 
the sound.

73, Ken K3IU
~~~
On 12/14/2010 10:14 AM, Guy Olinger K2AV wrote:
> Well, this is very interesting.
>
> While I haven't tried ALL the NR settings, I'm STILL not able to get a
> dropout with NR turned on either.
>
> Tony, Ken, can you supply me with a complete list of all your settings
> when this happens to see if there is some combination of settings that
> will cause the dropout on my K3.  In particular all your AGC settings
> from CONFIG: menu.  And everything on the front panel you have set.
>
> Perhaps there is a certain combination that introduces the effect.
>
> If you could estimate the length of the drop out in milliseconds, what
> would it be?
>
> 73, Guy.
>
> On Tue, Dec 14, 2010 at 5:40 AM, Ken Wagner K3IU  wrote:
>> G'morning, Tony:
>> With the NR turned ON, I experience a
>> momentary reduction in audio when
>> turning the SubRx ON. With NR turned
>> OFF, there is no reduction in audio when
>> turning the SubRx ON.
>> 73, Ken K3IU
>> ~~~
>> On 12/13/2010 9:55 PM, Tony Estep wrote:
>>> On Mon, Dec 13, 2010 at 7:32 PM, Luis V. Romerowrote:
>>>
 ...that annoying momentary dropout in the audio...
>>>The momentary dropout that bugs me is the one that occurs when you turn 
>>> on
>>> Sub. As everybody knows, listening to the DX on VFO A and the pileup on VFO
>>> B is the key to working a lot of DX with modest power and a wire. The K3 is
>>> the best at this in  many ways, but it has the unfortunate habit of
>>> observing a moment of silence when the Sub button is pushed. I like to turn
>>> Sub off at times to get rid of the 3db splitter loss, and every time I turn
>>> it back on to check the pile the radio exhibits this annoying trait. Can
>>> this be fixed in firmware someday?
>>>
>>> 73 Tony KT0NY
>>> __
>>> 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] K3 in ARRL10

[Guy Olinger K2AV]

Hi Jorge,

If you are listening to weak signals on 10m with a K3, the PRE should
be on.  It's really required unless your local 10m ambient noise is
terrible.

The FT1000MP built in this change in sensitivity, so it always had
additional sensitivity automatically turned on for 10 meters.  This
could be turned off in the menu.

In the K3, the operator makes these choices, it's not automatic.  In
general, the PRE should always be on for 10m.  By contrast on 160m,
the ATT should be on and the PRE off, unless you are listening to a
beverage or other low level RX antenna.  But these settings are left
entirely to the operator.

Those who have a high-end external preamp for ten meters (particularly
remote pre-amps) will want the K3 internal preamp off.  That is one of
the number of reasons why it is left to the operator to determine the
proper setting of PRE/ATT to match the ambient noise at the ANT jack.

Once the proper setting for your circumstance is determined, the K3
will remember it so you don't have to adjust it constantly.

73, Guy.

On Tue, Dec 14, 2010 at 5:53 AM, Jorge Diez - CX6VM
 wrote:
> Hello,
>
> Sorry for the delay, but I was in a 6 hours drive trip yesterday.
>
> After reading the emails, I stopped at AC7AC email. I am very sure that I
> have band noise. I heard a noticeable SH that I didn´t heard in
> the TS850. I can do some records later this week when I go back to the
> station.
>
> My setup is a ArraySolution sixpack, so I switch the 10 mts position to the
> K3 and TS850.  The radios are connected to different models of amps and swr
> meters, but I don´t know if this will affect.
>
> I didn´t use the PRE.
>
> 73,
> Jorge
> CX6VM/CW5W
>
>
>
> -Mensaje original-
> De: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] En nombre de w...@w5ov.com
> Enviado el: Lunes, 13 de Diciembre de 2010 04:03 p.m.
> Para: John_N1JM
> CC: elecraft@mailman.qth.net
> Asunto: Re: [Elecraft] K3 in ARRL10
>
> I operated the 10m contest this weekend with my K3 and I did have the
> preamp on. In that condition, I heard a lot more than apparently could
> hear me.
>
> If this could be quantified some way, perhaps we could get away from just
> comparing opinions?
>
> de W5OV
>
>>
>> Even though I do get a rise in band noise going from dummy load to
>> antenna, I
>> still hear weak signals on my 480 that I don't hear on the K3 on 10 meters
>> SSB. Not sure about cw (what's cw?) :-). Assuming my K3 is set up
>> properly,
>> I would hate to crank up the IF gain just for 10 meters.
>> --
>> View this message in context:
>> http://elecraft.365791.n2.nabble.com/K3-in-ARRL10-tp5830988p5831388.html
>> Sent from the Elecraft mailing list archive at Nabble.com.
>> __
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>>
>
>
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Re: [Elecraft] K2 Power Supply

[John Ragle]

I used a K2 for about a year on a 25 amp Radio Shack Switching Power 
Supply. I am now using the same supply on an ICOM 910H. There is an 
enormous to-and-fro on this reflector about the merits/difficulties of 
switching supplies which I do not want to breathe back into existence, 
but I have never had any problems with this set-up or with the Pyramid 
switcher I use on my K3. These power supplies are small and very 
convenient. I use a brutish Astron 70 for my TE Systems amps...it keeps 
the shack from sailing away in a high wind.

John Ragle -- W1ZI

=

On 12/14/2010 10:07 AM, Paul Agoglia wrote:
> I am in the process of assembly of a K2, working on the Front Panel Board.  
> As I move closer to the testing stage (probably another month or so) I am 
> starting to think about how the unit is powered.  I am guessing that there is 
> not an internal power supply.  I also did not order the battery option.  What 
> suggestions are out there for powering the K2?  By the way, I do have the 100 
> watt option, in case that plays a role in choosing a power supply.
>
> I am willing to consider kit power supplies, so any suggestions for pre built 
> and kits are welcome.
>
> 73 de WN2K
> Paul Agoglia
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[Elecraft] OT: possible ham operation in the region of 415-526.5 Khz

[Johnny Siu]

Hello Group,
 
This is off topic but I know there are experts in this group.
 
I am the amateur radio sector representative of Radio Spectrum Advisory 
Committee (RSAC) of Telecommunication Authority of Hong Kong.  RSAC is an 
official advisory committee under the Hong Kong Government.
 
http://www.ofta.gov.hk/en/ad-comm/rsac/main.html
 
The Asia Pacific Telecommunity is now having its meetings in Hong Kong. 
 
http://www.aptsec.org/
 
One of the discussion is related to WRC 2012 Agenda item 1.23 about the 
allocation of a 15Khz segment within 415-526.5Khz for amateur services.
 
As a representative of RSAC, I am now attending the discussion group for the 
Agenda item 1.23.
 
Propagation in this band is primarily by means of ground wave,so availability 
of 
this band for the amateur service may provide a useful extension of the 
capability of the amateur service to provide disaster notification and relief 
communications on a wider area basis than is normally provided by the VHF or 
UHF 
bands that form the main-stay of amateur disaster relief communications. 

 
My questions are :
1.  practically speaking, apart from huge traditional wire antenna, are there 
any other antennas of managable size (also reasonable efficiency) which can be 
easily set up under distress situation?
2.    to make communciations of say within 200-300km, what ERP is required?
3.    for a segment of 15Khz, voice communciation seems quite restrictive.  How 
efficent will it be under digital mode (not CW) such as Pactor?
 
I must admit that I am not a radio man by profession and have limited knowledge 
on MF radio operation.  I am looking forward to your advice and apologise for 
the band width in this mail reflector.
 73


Johnny VR2XMC 


  
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Re: [Elecraft] Used Amp

[Eric Rosenberg]

 I have a Herc II and love it. Hooking it up to the K3 is quite simple,
You'll need a Band Data Decoder (I have a KRC2) to remote the bandswitching
and another cable to key it.  I suspect you can also use any other band data
decoder.

I'm happy to pass along the wiring diagram and instructions.

73,
Eric W3DQ
Washington, DC

---

Date: Mon, 13 Dec 2010 16:47:40 -0500
From: "Phil LaMarche" 
Subject: [Elecraft] Used Amp
To: elecraft@mailman.qth.net

While waiting for the arrival of the new Elecraft amp, I sold some older
amps and bought a used Ten Tec Hercules II solid state amp.  It runs 550
watts and looks just like new.  I had forgotten how nice this little amp
was, having owned one 14 years ago. This will make my waiting easier and see
the results of running 500 watts. I'm also about to order a P3.



Phil
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Re: [Elecraft] K3 in ARRL10

[Jorge Diez - CX6VM]

Hi Guy,

Thanks for the suggestion.

Will try 10 mts with the PRE next time I go to the station. Unfortunately I
didn´t tried it during the contest.

On low bands sometimes I don´t need to use the PRE with my beverages, very
good RX there.!

73,
Jorge
CX6VM/CW5W

-Mensaje original-
De: guyk...@gmail.com [mailto:guyk...@gmail.com] En nombre de Guy Olinger
K2AV
Enviado el: Martes, 14 de Diciembre de 2010 01:34 p.m.
Para: Jorge Diez - CX6VM
CC: w...@w5ov.com; John_N1JM; elecraft@mailman.qth.net
Asunto: Re: [Elecraft] K3 in ARRL10

Hi Jorge,

If you are listening to weak signals on 10m with a K3, the PRE should
be on.  It's really required unless your local 10m ambient noise is
terrible.

The FT1000MP built in this change in sensitivity, so it always had
additional sensitivity automatically turned on for 10 meters.  This
could be turned off in the menu.

In the K3, the operator makes these choices, it's not automatic.  In
general, the PRE should always be on for 10m.  By contrast on 160m,
the ATT should be on and the PRE off, unless you are listening to a
beverage or other low level RX antenna.  But these settings are left
entirely to the operator.

Those who have a high-end external preamp for ten meters (particularly
remote pre-amps) will want the K3 internal preamp off.  That is one of
the number of reasons why it is left to the operator to determine the
proper setting of PRE/ATT to match the ambient noise at the ANT jack.

Once the proper setting for your circumstance is determined, the K3
will remember it so you don't have to adjust it constantly.

73, Guy.

On Tue, Dec 14, 2010 at 5:53 AM, Jorge Diez - CX6VM
 wrote:
> Hello,
>
> Sorry for the delay, but I was in a 6 hours drive trip yesterday.
>
> After reading the emails, I stopped at AC7AC email. I am very sure that I
> have band noise. I heard a noticeable SH that I didn´t heard
in
> the TS850. I can do some records later this week when I go back to the
> station.
>
> My setup is a ArraySolution sixpack, so I switch the 10 mts position to
the
> K3 and TS850.  The radios are connected to different models of amps and
swr
> meters, but I don´t know if this will affect.
>
> I didn´t use the PRE.
>
> 73,
> Jorge
> CX6VM/CW5W
>
>
>
> -Mensaje original-
> De: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] En nombre de w...@w5ov.com
> Enviado el: Lunes, 13 de Diciembre de 2010 04:03 p.m.
> Para: John_N1JM
> CC: elecraft@mailman.qth.net
> Asunto: Re: [Elecraft] K3 in ARRL10
>
> I operated the 10m contest this weekend with my K3 and I did have the
> preamp on. In that condition, I heard a lot more than apparently could
> hear me.
>
> If this could be quantified some way, perhaps we could get away from just
> comparing opinions?
>
> de W5OV
>
>>
>> Even though I do get a rise in band noise going from dummy load to
>> antenna, I
>> still hear weak signals on my 480 that I don't hear on the K3 on 10
meters
>> SSB. Not sure about cw (what's cw?) :-). Assuming my K3 is set up
>> properly,
>> I would hate to crank up the IF gain just for 10 meters.
>> --
>> View this message in context:
>> http://elecraft.365791.n2.nabble.com/K3-in-ARRL10-tp5830988p5831388.html
>> Sent from the Elecraft mailing list archive at Nabble.com.
>> __
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>>
>
>
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Re: [Elecraft] Winmor and K3

[N8LP]

I have an E-MU 0204 on order, Chen. I paid $130. It looks to me like an 0202
with two additional outputs. It has the same specs and ADC as the 0202, and
apparently replaces the 0202. Once I test and verify it's operation, I
expect it will become the standard card for LP-PAN. I also expect the price
to drop over the next year to the $100 range.

73,
Larry N8LP




Kok Chen wrote:
> 
> 
> On Dec 13, 2010, at 12:49 PM, Andrew Meyer wrote:
> 
> By the way, for anyone looking for a good sound card for the LP-PAN, keep
> your eyes open for the E-MU 0204.  This is pretty much an E-MU 0404 in a
> smaller box (and with front facing controls).  It lacks the S/PDIF ports
> and possibly no 48 volt phantom power (neither of which you need for the
> LP-PAN).  Otherwise, the specs mirrors the specs of the E-MU 0404.
> 
> The 0204 has been announced but I have not seen any one selling it yet. 
> It should come in under US $130 (the E-MU 0404 goes for around $200, so
> you save some money, save some desk space and not lose anything in
> performance).
> 
> 73
> Chen, W7AY
> 
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> 

-- 
View this message in context: 
http://elecraft.365791.n2.nabble.com/Winmor-and-K3-tp5832252p5834429.html
Sent from the [K3] mailing list archive at Nabble.com.
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[Elecraft] WTB: KRC2

[Phil LaMarche]

Does anyone have one surplus to your need?  Price please.

 

Phil

 

Philip LaMarche

 

LaMarche Enterprises, Inc

  p...@lamarcheenterprises.com

  www.LaMarcheEnterprises.com 

 

727-944-3226

727-937-8834 Fax

727-510-5038 Cell 

 

  www.w9dvm.com

 

K3 #1605

 

CCA 98-00827

CRA 1701

W9DVM

 

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Re: [Elecraft] Audio dropout

[Guy Olinger K2AV]

Well, I don't hear the RX dropping out.  What I do hear is the NR
resetting and then readjusting.  You get exactly the same delay when
you have NR off and then turn it on.  There is no change in the RF
path, as the S meter shows the same level of 160m buzz on input
without a drop out.  The "dropout" is independent of AGC.

The report is not that the RX drops out, but that turning on SUB
somehow causes a slow F 1-2 NR reset in the main radio, as if the NR
had been turned off and on.  Listening to the SUBRX with the same
setting of NR, coming on there is no "synch" wait, as if the RX
turning on is known and the algorithm has a startup sequence.  Should
the main RX NR get a startup sequence when the SUB is switched on?

Wayne, Lyle?

Aside from that, you use NR in a contest?  Just for long term ear
comfort, I hope.  I always lose very weak contacts in NR.  I holler at
the guys at NY4A if I see it on.  Lowers the score. The brain is still
the best NR for CW and SSB.  NB is another story.  T 3-7 or 2-7 with
IF OFF on key clicks is remarkable.

73, Guy.

On Tue, Dec 14, 2010 at 10:31 AM, Ken K3IU  wrote:
> G'morning, Guy:
>
> CW Mode, 400 Hz bandwidth with 400Hz filter, AGC-F, abt S3 noise level, NR
> ON, NR setting="NR F 1--2"
>
> Guess about a half second. Not a complete audio reduction to no sound at
> all, but a perceptible momentary reduction of the sound.
>
> 73, Ken K3IU
> ~~~
> On 12/14/2010 10:14 AM, Guy Olinger K2AV wrote:
>
> Well, this is very interesting.
>
> While I haven't tried ALL the NR settings, I'm STILL not able to get a
> dropout with NR turned on either.
>
> Tony, Ken, can you supply me with a complete list of all your settings
> when this happens to see if there is some combination of settings that
> will cause the dropout on my K3.  In particular all your AGC settings
> from CONFIG: menu.  And everything on the front panel you have set.
>
> Perhaps there is a certain combination that introduces the effect.
>
> If you could estimate the length of the drop out in milliseconds, what
> would it be?
>
> 73, Guy.
>
> On Tue, Dec 14, 2010 at 5:40 AM, Ken Wagner K3IU  wrote:
>
> G'morning, Tony:
> With the NR turned ON, I experience a
> momentary reduction in audio when
> turning the SubRx ON. With NR turned
> OFF, there is no reduction in audio when
> turning the SubRx ON.
> 73, Ken K3IU
> ~~~
> On 12/13/2010 9:55 PM, Tony Estep wrote:
>
> On Mon, Dec 13, 2010 at 7:32 PM, Luis V. Romero  wrote:
>
> ...that annoying momentary dropout in the audio...
>
>   The momentary dropout that bugs me is the one that occurs when you turn on
> Sub. As everybody knows, listening to the DX on VFO A and the pileup on VFO
> B is the key to working a lot of DX with modest power and a wire. The K3 is
> the best at this in  many ways, but it has the unfortunate habit of
> observing a moment of silence when the Sub button is pushed. I like to turn
> Sub off at times to get rid of the 3db splitter loss, and every time I turn
> it back on to check the pile the radio exhibits this annoying trait. Can
> this be fixed in firmware someday?
>
> 73 Tony KT0NY
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Re: [Elecraft] OT: possible ham operation in the region of 415-526.5 Khz

[Matt Zilmer]

You might try a magnetic loop.  Here is a Wikipedia article with
references to others:
http://en.wikipedia.org/wiki/Magnetic_loop

73,
Matt W6NIA

On Tue, 14 Dec 2010 23:41:47 +0800 (HKT), you wrote:

>Hello Group,
> 
>This is off topic but I know there are experts in this group.
> 
>I am the amateur radio sector representative of Radio Spectrum Advisory 
>Committee (RSAC) of Telecommunication Authority of Hong Kong.  RSAC is an 
>official advisory committee under the Hong Kong Government.
> 
>http://www.ofta.gov.hk/en/ad-comm/rsac/main.html
> 
>The Asia Pacific Telecommunity is now having its meetings in Hong Kong. 
> 
>http://www.aptsec.org/
> 
>One of the discussion is related to WRC 2012 Agenda item 1.23 about the 
>allocation of a 15Khz segment within 415-526.5Khz for amateur services.
> 
>As a representative of RSAC, I am now attending the discussion group for the 
>Agenda item 1.23.
> 
>Propagation in this band is primarily by means of ground wave,so availability 
>of 
>this band for the amateur service may provide a useful extension of the 
>capability of the amateur service to provide disaster notification and relief 
>communications on a wider area basis than is normally provided by the VHF or 
>UHF 
>bands that form the main-stay of amateur disaster relief communications. 
>
> 
>My questions are :
>1.  practically speaking, apart from huge traditional wire antenna, are there 
>any other antennas of managable size (also reasonable efficiency) which can be 
>easily set up under distress situation?
>2.    to make communciations of say within 200-300km, what ERP is required?
>3.    for a segment of 15Khz, voice communciation seems quite restrictive.  
>How 
>efficent will it be under digital mode (not CW) such as Pactor?
> 
>I must admit that I am not a radio man by profession and have limited 
>knowledge 
>on MF radio operation.  I am looking forward to your advice and apologise for 
>the band width in this mail reflector.
> 73
>
>
>Johnny VR2XMC 
>
>
>  
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Re: [Elecraft] K3 in ARRL10

[Wayne Burdick]

Jorge,

The K3 has outstanding dynamic range even with the preamp on.

73,
Wayne
N6KR

Jorge Diez - CX6VM wrote:

> Hi Guy,
>
> Thanks for the suggestion.
>
> Will try 10 mts with the PRE next time I go to the station.  
> Unfortunately I
> didn´t tried it during the contest.
>
> On low bands sometimes I don´t need to use the PRE with my  
> beverages, very
> good RX there.!

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Re: [Elecraft] K3 in ARRL10

[Guido Tedeschi]

To be compared with K3 with PRE OFF, the TS-850 must be with AIP set to ON
73 de Guido, ik2bcp


2010/12/14 Jorge Diez - CX6VM :
> Hi Guy,
>
> Thanks for the suggestion.
>
> Will try 10 mts with the PRE next time I go to the station. Unfortunately I
> didn´t tried it during the contest.
>
> On low bands sometimes I don´t need to use the PRE with my beverages, very
> good RX there.!
>
> 73,
> Jorge
> CX6VM/CW5W
>
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Re: [Elecraft] K3 in ARRL10

[Guy Olinger K2AV]

Listening to 10m on a K3 with PRE off definitely would give the
appearance of "insensitivity" if compared to a RX that switched its
preamp on with a band change, or had the extra sensitivity switched
in.

Just one more reason that science grade RX comparisons are difficult
and require established protocols to do it right.

73, Guy.

On Tue, Dec 14, 2010 at 10:52 AM, Jorge Diez - CX6VM
 wrote:
> Hi Guy,
>
> Thanks for the suggestion.
>
> Will try 10 mts with the PRE next time I go to the station. Unfortunately I
> didn´t tried it during the contest.
>
> On low bands sometimes I don´t need to use the PRE with my beverages, very
> good RX there.!
>
> 73,
> Jorge
> CX6VM/CW5W
>
> -Mensaje original-
> De: guyk...@gmail.com [mailto:guyk...@gmail.com] En nombre de Guy Olinger
> K2AV
> Enviado el: Martes, 14 de Diciembre de 2010 01:34 p.m.
> Para: Jorge Diez - CX6VM
> CC: w...@w5ov.com; John_N1JM; elecraft@mailman.qth.net
> Asunto: Re: [Elecraft] K3 in ARRL10
>
> Hi Jorge,
>
> If you are listening to weak signals on 10m with a K3, the PRE should
> be on.  It's really required unless your local 10m ambient noise is
> terrible.
>
> The FT1000MP built in this change in sensitivity, so it always had
> additional sensitivity automatically turned on for 10 meters.  This
> could be turned off in the menu.
>
> In the K3, the operator makes these choices, it's not automatic.  In
> general, the PRE should always be on for 10m.  By contrast on 160m,
> the ATT should be on and the PRE off, unless you are listening to a
> beverage or other low level RX antenna.  But these settings are left
> entirely to the operator.
>
> Those who have a high-end external preamp for ten meters (particularly
> remote pre-amps) will want the K3 internal preamp off.  That is one of
> the number of reasons why it is left to the operator to determine the
> proper setting of PRE/ATT to match the ambient noise at the ANT jack.
>
> Once the proper setting for your circumstance is determined, the K3
> will remember it so you don't have to adjust it constantly.
>
> 73, Guy.
>
> On Tue, Dec 14, 2010 at 5:53 AM, Jorge Diez - CX6VM
>  wrote:
>> Hello,
>>
>> Sorry for the delay, but I was in a 6 hours drive trip yesterday.
>>
>> After reading the emails, I stopped at AC7AC email. I am very sure that I
>> have band noise. I heard a noticeable SH that I didn´t heard
> in
>> the TS850. I can do some records later this week when I go back to the
>> station.
>>
>> My setup is a ArraySolution sixpack, so I switch the 10 mts position to
> the
>> K3 and TS850.  The radios are connected to different models of amps and
> swr
>> meters, but I don´t know if this will affect.
>>
>> I didn´t use the PRE.
>>
>> 73,
>> Jorge
>> CX6VM/CW5W
>>
>>
>>
>> -Mensaje original-
>> De: elecraft-boun...@mailman.qth.net
>> [mailto:elecraft-boun...@mailman.qth.net] En nombre de w...@w5ov.com
>> Enviado el: Lunes, 13 de Diciembre de 2010 04:03 p.m.
>> Para: John_N1JM
>> CC: elecraft@mailman.qth.net
>> Asunto: Re: [Elecraft] K3 in ARRL10
>>
>> I operated the 10m contest this weekend with my K3 and I did have the
>> preamp on. In that condition, I heard a lot more than apparently could
>> hear me.
>>
>> If this could be quantified some way, perhaps we could get away from just
>> comparing opinions?
>>
>> de W5OV
>>
>>>
>>> Even though I do get a rise in band noise going from dummy load to
>>> antenna, I
>>> still hear weak signals on my 480 that I don't hear on the K3 on 10
> meters
>>> SSB. Not sure about cw (what's cw?) :-). Assuming my K3 is set up
>>> properly,
>>> I would hate to crank up the IF gain just for 10 meters.
>>> --
>>> View this message in context:
>>> http://elecraft.365791.n2.nabble.com/K3-in-ARRL10-tp5830988p5831388.html
>>> Sent from the Elecraft mailing list archive at Nabble.com.
>>> __
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>>
>>
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Re: [Elecraft] K3 Questions and gripes

[Scott Ellington]

The K3 noise blanker bandpass filter appears to have a bandwidth of about 400 
kHz, so any strong signal within that bandwidth will affect its operation.  
This is a problem with all noise blankers of this type, as  they can't detect 
noise pulses smaller than the strongest signal within the filter bandwidth.  
Some use a narrower filter, perhaps 15 kHz, to minimize the chance a strong 
signal is in its passband.  That, of course, us usually still far too wide 
during a contest, and the noise blanker just won't work with a narrower 
bandwidth.  One solution is the "Evasive Noise Blanker", which essentially uses 
a second receiver to detect noise pulses at a slightly different frequency, for 
example, just outside the ham band.  I may someday investigate trying to do 
that with the K3.

I'm just guessing, but it seems Elecraft took a different approach in using the 
very wide bandwidth.  This increases the peak amplitude of the noise pulses, 
allowing them to be detected at a higher threshold while, under crowded band 
conditions, the strongest signal remains about the same.  

By the way, many have noticed, I'm sure, that noise blankers are at times much 
more effective than at others, even if the characteristics of the noise are the 
same.  Generally, they work great when there are no strong signals around.  
When there are strong signals in the NB filter passband, the noise detection 
threshold goes up as a result of NB AGC action, and the same noise pulses may 
not be detected at all.  That can happen even when the obvious distortion from 
the NB isn't present.

73,

Scott  K9MA


On Dec 12, 2010, at 9:59 AM, David F. Reed wrote:

> Hi folks;
> 
> Yes, I really love my K3 in spite of my questions and gripes; here they are:
> 
>   1. During the 10 meter contest, I was up around 28.400 operating SSB
>  with the NB on, when I noticed that I was getting a strong CW
>  signal pumping my AGC (or so it seemed).
> 
>  In doing a little research, I found the cw station responsible was
>  down at 28.023, at about S9+40 db; by call, I know the station and
>  that he is about 3 miles away.  Far enough and weak enough that I
>  should not be receiving this sort of interference I think, given
>  there are no key clicks, etc.
> 
>  I turn off the NB, and it clears up completely, even 500Hz away,
>  let alone 300 or 400 KHz away.   I go back up, no problem except I
>  want to use the NB; turn it back on, problem re-appears.
> 
>  This seems to be an artifact of how the NB is implemented,
>  rendering it useless under these sorts of circumstances.
> 
>  Am I missing something, out of adjustment, or ???
> 
>   2. The power switch - early serial number (1476); my power switch -
>  well the rubber / plastic part you press on - is starting to look
>  like a mouse has nibbled on it, with little divots falling off
>  along the top and right side edges.  It is looking quite ragged. 
>  Has anyone else had this, or know if I can replace just the
>  rubber/plastic part, or do I need to replace the entire switch
>  assembly?
> 
> Thanks and 73 de Dave, W5SV
> __
> 

Scott Ellington
Madison, Wisconsin
USA



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Re: [Elecraft] Audio dropout

[Ken K3IU]

No, Guy, I don't use NR in a contest. I hardly ever use it 
at all. Tony was looking for some input, to I tried it out 
and told him what I found. This is NOT a problem for me at all.
73, Ken K3IU

On 12/14/2010 11:05 AM, Guy Olinger K2AV wrote:
> Well, I don't hear the RX dropping out.  What I do hear is the NR
> resetting and then readjusting.  You get exactly the same delay when
> you have NR off and then turn it on.  There is no change in the RF
> path, as the S meter shows the same level of 160m buzz on input
> without a drop out.  The "dropout" is independent of AGC.
>
> The report is not that the RX drops out, but that turning on SUB
> somehow causes a slow F 1-2 NR reset in the main radio, as if the NR
> had been turned off and on.  Listening to the SUBRX with the same
> setting of NR, coming on there is no "synch" wait, as if the RX
> turning on is known and the algorithm has a startup sequence.  Should
> the main RX NR get a startup sequence when the SUB is switched on?
>
> Wayne, Lyle?
>
> Aside from that, you use NR in a contest?  Just for long term ear
> comfort, I hope.  I always lose very weak contacts in NR.  I holler at
> the guys at NY4A if I see it on.  Lowers the score. The brain is still
> the best NR for CW and SSB.  NB is another story.  T 3-7 or 2-7 with
> IF OFF on key clicks is remarkable.
>
> 73, Guy.
>
> On Tue, Dec 14, 2010 at 10:31 AM, Ken K3IU  wrote:
>> G'morning, Guy:
>>
>> CW Mode, 400 Hz bandwidth with 400Hz filter, AGC-F, abt S3 noise level, NR
>> ON, NR setting="NR F 1--2"
>>
>> Guess about a half second. Not a complete audio reduction to no sound at
>> all, but a perceptible momentary reduction of the sound.
>>
>> 73, Ken K3IU
>> ~~~
>> On 12/14/2010 10:14 AM, Guy Olinger K2AV wrote:
>>
>> Well, this is very interesting.
>>
>> While I haven't tried ALL the NR settings, I'm STILL not able to get a
>> dropout with NR turned on either.
>>
>> Tony, Ken, can you supply me with a complete list of all your settings
>> when this happens to see if there is some combination of settings that
>> will cause the dropout on my K3.  In particular all your AGC settings
>> from CONFIG: menu.  And everything on the front panel you have set.
>>
>> Perhaps there is a certain combination that introduces the effect.
>>
>> If you could estimate the length of the drop out in milliseconds, what
>> would it be?
>>
>> 73, Guy.
>>
>> On Tue, Dec 14, 2010 at 5:40 AM, Ken Wagner K3IU  wrote:
>>
>> G'morning, Tony:
>> With the NR turned ON, I experience a
>> momentary reduction in audio when
>> turning the SubRx ON. With NR turned
>> OFF, there is no reduction in audio when
>> turning the SubRx ON.
>> 73, Ken K3IU
>> ~~~
>> On 12/13/2010 9:55 PM, Tony Estep wrote:
>>
>> On Mon, Dec 13, 2010 at 7:32 PM, Luis V. Romerowrote:
>>
>> ...that annoying momentary dropout in the audio...
>>
>>The momentary dropout that bugs me is the one that occurs when you turn on
>> Sub. As everybody knows, listening to the DX on VFO A and the pileup on VFO
>> B is the key to working a lot of DX with modest power and a wire. The K3 is
>> the best at this in  many ways, but it has the unfortunate habit of
>> observing a moment of silence when the Sub button is pushed. I like to turn
>> Sub off at times to get rid of the 3db splitter loss, and every time I turn
>> it back on to check the pile the radio exhibits this annoying trait. Can
>> this be fixed in firmware someday?
>>
>> 73 Tony KT0NY
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Re: [Elecraft] K3 - Noise Blanker Problems

[Geoffrey Downs]

Further to recent postings I've reverted to F/w 4.14 for test purposes and 
find that distortion of louder SSB signals seems to start at a higher 
setting of the DSP noise blanker than in f/w 4.22. For example I can turn 
the DSP blanker up to 1-6 with minimal distortion under 4.14, but only to 
1-4 in f/w 4.22. This is not a scientfic measurement, of course - just what 
I think my ears tell me.

73 to all

Geoff
G3UCK


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Re: [Elecraft] K3 Questions and gripes

[Wayne Burdick]

Scott,

On Dec 14, 2010, at 8:28 AM, Scott Ellington wrote:

> The K3 noise blanker bandpass filter appears to have a bandwidth of  
> about 400 kHz

> I'm just guessing, but it seems Elecraft took a different approach  
> in using the very wide bandwidth.  This increases the peak amplitude  
> of the noise pulses, allowing them to be detected at a higher  
> threshold while, under crowded band conditions, the strongest signal  
> remains about the same

Exactly.

If you need a narrow-band blanker, use the DSP NB. It is very  
effective on a wide range of noise types, and is post-crystal filter.

If you have the 6-kHz filter installed, you can increase the  
effectiveness of the DSP NB with some kinds of noise in SSB mode; just  
set WIDTH above 2.8 kHz so this wider filter will be selected.

Wayne

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Re: [Elecraft] K3 in ARRL10

[w5ov]

Jorge,

It seems that despite your problem, you managed to have the highest score
as a multi-single:

Call   QSOs Mults   hr  Score Club
Non-NA M/S HP
CW5W(@CX6VM)  1584   23424  1,232,244
LS1D  1617   2251,137,150
CE4CT 1770   21028  1,092,840 LU Contest Group
PJ2T  1703   17927981,994 PVRC
CW5R  1320   135  785,000 Araucaria DX
PT3T(@PY3CM)     20636750,252 Araucaria DX
LU1UM 1064   18230559,832 LU Contest Group
DK5QN  382   10219131,172 RR DX
ED1R   339   10016114,600 Radio Club Henares
ZY6Z(@PY6HD)   30089 15:28 77,964 Araucaria DX

Congrats!

73,

Bob W5OV


> Hi Guy,
>
> Thanks for the suggestion.
>
> Will try 10 mts with the PRE next time I go to the station. Unfortunately
> I
> didn´t tried it during the contest.
>
> On low bands sometimes I don´t need to use the PRE with my beverages, very
> good RX there.!
>
> 73,
> Jorge
> CX6VM/CW5W
>
> -Mensaje original-
> De: guyk...@gmail.com [mailto:guyk...@gmail.com] En nombre de Guy Olinger
> K2AV
> Enviado el: Martes, 14 de Diciembre de 2010 01:34 p.m.
> Para: Jorge Diez - CX6VM
> CC: w...@w5ov.com; John_N1JM; elecraft@mailman.qth.net
> Asunto: Re: [Elecraft] K3 in ARRL10
>
> Hi Jorge,
>
> If you are listening to weak signals on 10m with a K3, the PRE should
> be on.  It's really required unless your local 10m ambient noise is
> terrible.
>
> The FT1000MP built in this change in sensitivity, so it always had
> additional sensitivity automatically turned on for 10 meters.  This
> could be turned off in the menu.
>
> In the K3, the operator makes these choices, it's not automatic.  In
> general, the PRE should always be on for 10m.  By contrast on 160m,
> the ATT should be on and the PRE off, unless you are listening to a
> beverage or other low level RX antenna.  But these settings are left
> entirely to the operator.
>
> Those who have a high-end external preamp for ten meters (particularly
> remote pre-amps) will want the K3 internal preamp off.  That is one of
> the number of reasons why it is left to the operator to determine the
> proper setting of PRE/ATT to match the ambient noise at the ANT jack.
>
> Once the proper setting for your circumstance is determined, the K3
> will remember it so you don't have to adjust it constantly.
>
> 73, Guy.
>
> On Tue, Dec 14, 2010 at 5:53 AM, Jorge Diez - CX6VM
>  wrote:
>> Hello,
>>
>> Sorry for the delay, but I was in a 6 hours drive trip yesterday.
>>
>> After reading the emails, I stopped at AC7AC email. I am very sure that
>> I
>> have band noise. I heard a noticeable SH that I didn´t heard
> in
>> the TS850. I can do some records later this week when I go back to the
>> station.
>>
>> My setup is a ArraySolution sixpack, so I switch the 10 mts position to
> the
>> K3 and TS850.  The radios are connected to different models of amps and
> swr
>> meters, but I don´t know if this will affect.
>>
>> I didn´t use the PRE.
>>
>> 73,
>> Jorge
>> CX6VM/CW5W
>>
>>
>>
>> -Mensaje original-
>> De: elecraft-boun...@mailman.qth.net
>> [mailto:elecraft-boun...@mailman.qth.net] En nombre de w...@w5ov.com
>> Enviado el: Lunes, 13 de Diciembre de 2010 04:03 p.m.
>> Para: John_N1JM
>> CC: elecraft@mailman.qth.net
>> Asunto: Re: [Elecraft] K3 in ARRL10
>>
>> I operated the 10m contest this weekend with my K3 and I did have the
>> preamp on. In that condition, I heard a lot more than apparently could
>> hear me.
>>
>> If this could be quantified some way, perhaps we could get away from
>> just
>> comparing opinions?
>>
>> de W5OV
>>
>>>
>>> Even though I do get a rise in band noise going from dummy load to
>>> antenna, I
>>> still hear weak signals on my 480 that I don't hear on the K3 on 10
> meters
>>> SSB. Not sure about cw (what's cw?) :-). Assuming my K3 is set up
>>> properly,
>>> I would hate to crank up the IF gain just for 10 meters.
>>> --
>>> View this message in context:
>>> http://elecraft.365791.n2.nabble.com/K3-in-ARRL10-tp5830988p5831388.html
>>> Sent from the Elecraft mailing list archive at Nabble.com.
>>> __
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>>>
>>
>>
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>

[Elecraft] Test

[NZ0T]

Test
-- 
View this message in context: 
http://elecraft.365791.n2.nabble.com/Test-tp5834531p5834531.html
Sent from the [K3] mailing list archive at Nabble.com.
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Re: [Elecraft] K3 Questions and gripes

[Guy Olinger K2AV]

The K3 has a dual methodology.  1) DSP and 2) traditional analog IF
pulse detection noise blanking which shuts off the IF for very short
intervals around the pulse.

Doesn't your commentary only apply to the IF NB methods of the K3?
The DSP methods take place in firmware, analyzing and adjusting the
number stream to "remove" noise.  The very successful key click
suppression only works with the IF method off, and using the DSP
method T2-7 and T3-7.

I agree with your analysis as long as it is qualified to the K3 NB's
IF method. Your reasoning below also pertains to why the IF method
needs to be off for key click suppression.  Digital NB artifacts are
not related to the after-effects of analog IF noise blanking.

I was at first surprised that the analog IF blanking was retained in
the K3.  But over time there have been many posts about successful use
of the IF blanking and IF/DSP combinations, validating Elecraft's
retention, however ancient the issues and artifacts of the IF method
may be.

73, Guy.

On Tue, Dec 14, 2010 at 11:28 AM, Scott Ellington
 wrote:
> The K3 noise blanker bandpass filter appears to have a bandwidth of about 400 
> kHz, so any strong signal within that bandwidth will affect its operation.  
> This is a problem with all noise blankers of this type, as  they can't detect 
> noise pulses smaller than the strongest signal within the filter bandwidth.  
> Some use a narrower filter, perhaps 15 kHz, to minimize the chance a strong 
> signal is in its passband.  That, of course, us usually still far too wide 
> during a contest, and the noise blanker just won't work with a narrower 
> bandwidth.  One solution is the "Evasive Noise Blanker", which essentially 
> uses a second receiver to detect noise pulses at a slightly different 
> frequency, for example, just outside the ham band.  I may someday investigate 
> trying to do that with the K3.
>
> I'm just guessing, but it seems Elecraft took a different approach in using 
> the very wide bandwidth.  This increases the peak amplitude of the noise 
> pulses, allowing them to be detected at a higher threshold while, under 
> crowded band conditions, the strongest signal remains about the same.
>
> By the way, many have noticed, I'm sure, that noise blankers are at times 
> much more effective than at others, even if the characteristics of the noise 
> are the same.  Generally, they work great when there are no strong signals 
> around.  When there are strong signals in the NB filter passband, the noise 
> detection threshold goes up as a result of NB AGC action, and the same noise 
> pulses may not be detected at all.  That can happen even when the obvious 
> distortion from the NB isn't present.
>
> 73,
>
> Scott  K9MA
>
>
> On Dec 12, 2010, at 9:59 AM, David F. Reed wrote:
>
>> Hi folks;
>>
>> Yes, I really love my K3 in spite of my questions and gripes; here they are:
>>
>>   1. During the 10 meter contest, I was up around 28.400 operating SSB
>>      with the NB on, when I noticed that I was getting a strong CW
>>      signal pumping my AGC (or so it seemed).
>>
>>      In doing a little research, I found the cw station responsible was
>>      down at 28.023, at about S9+40 db; by call, I know the station and
>>      that he is about 3 miles away.  Far enough and weak enough that I
>>      should not be receiving this sort of interference I think, given
>>      there are no key clicks, etc.
>>
>>      I turn off the NB, and it clears up completely, even 500Hz away,
>>      let alone 300 or 400 KHz away.   I go back up, no problem except I
>>      want to use the NB; turn it back on, problem re-appears.
>>
>>      This seems to be an artifact of how the NB is implemented,
>>      rendering it useless under these sorts of circumstances.
>>
>>      Am I missing something, out of adjustment, or ???
>>
>>   2. The power switch - early serial number (1476); my power switch -
>>      well the rubber / plastic part you press on - is starting to look
>>      like a mouse has nibbled on it, with little divots falling off
>>      along the top and right side edges.  It is looking quite ragged.
>>      Has anyone else had this, or know if I can replace just the
>>      rubber/plastic part, or do I need to replace the entire switch
>>      assembly?
>>
>> Thanks and 73 de Dave, W5SV
>> __
>>
>
> Scott Ellington
> Madison, Wisconsin
> USA
>
>
>
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[Elecraft] HI TEMP error

[Wim van der Zwan PA2AM]

hi,


I have the last week problems with the K-3. 

I will get a msg HI TEMP on display ( by K-3 ON ) , the K-3 is cold with room 
temp. abouth 15 degrees C. 

with the msg HI TEMP the PA will bypass and can only use the low power PA ( 15 
watts ) , the Fan will gooing on 

by menu config PA-TEMP ,  I see a temp switching from - 100 C and -127 C 
continuing a differents value. 

in begin this week the problem whas over after 30 min warming up, but now the 
K-3 will stay in protection, no high power en fans on.. and still the msg 
HI-TEMP


The K-3 is hereserial no:576 
software  :04.14

What thit I do:
I reset this week the K-3 with the standard values but the problem will stay
I thit calibration the hole serie   5 watt, 50 watts en 1 Mw calibration, 
everything is ok with this calibration
re-calibrating the PA Temperature Sensor 
After I set PA TEMP to "R ONLY" instead of "T AND R",



I hope that somebody can give me a solution???

best 73 de Wim PA2AM
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Re: [Elecraft] K3 Questions and gripes

[Scott Ellington]

My comments apply to ONLY the IF (hardware) noise blanker.  Sorry I didn't make 
that clear, but I'm a hardware guy.

The reason for having the IF NB is that short-duration noise pulses, like the 
ubiquitous power line noise, must be detected ahead of narrow bandpass filters, 
which effectively lengthen the pulses.  This allows the noise gate to switch 
off during the short noise pulse, with minimal effect on the desired signals.  
I don't believe any kind of DSP cleverness, applied after the IF crystal 
filter, can be as effective for this kind of noise.  In the absence of strong 
signals, as I'm sure many others have found, these noise blankers can be very 
effective indeed.

73,

Scott  K9MA 


On Dec 14, 2010, at 11:28 AM, Guy Olinger K2AV wrote:

> The K3 has a dual methodology.  1) DSP and 2) traditional analog IF
> pulse detection noise blanking which shuts off the IF for very short
> intervals around the pulse.
> 
> Doesn't your commentary only apply to the IF NB methods of the K3?
> The DSP methods take place in firmware, analyzing and adjusting the
> number stream to "remove" noise.  The very successful key click
> suppression only works with the IF method off, and using the DSP
> method T2-7 and T3-7.
> 
> I agree with your analysis as long as it is qualified to the K3 NB's
> IF method. Your reasoning below also pertains to why the IF method
> needs to be off for key click suppression.  Digital NB artifacts are
> not related to the after-effects of analog IF noise blanking.
> 
> I was at first surprised that the analog IF blanking was retained in
> the K3.  But over time there have been many posts about successful use
> of the IF blanking and IF/DSP combinations, validating Elecraft's
> retention, however ancient the issues and artifacts of the IF method
> may be.
> 
> 73, Guy.
> 
> On Tue, Dec 14, 2010 at 11:28 AM, Scott Ellington
>  wrote:
>> The K3 noise blanker bandpass filter appears to have a bandwidth of about 
>> 400 kHz, so any strong signal within that bandwidth will affect its 
>> operation.  This is a problem with all noise blankers of this type, as  they 
>> can't detect noise pulses smaller than the strongest signal within the 
>> filter bandwidth.  Some use a narrower filter, perhaps 15 kHz, to minimize 
>> the chance a strong signal is in its passband.  That, of course, us usually 
>> still far too wide during a contest, and the noise blanker just won't work 
>> with a narrower bandwidth.  One solution is the "Evasive Noise Blanker", 
>> which essentially uses a second receiver to detect noise pulses at a 
>> slightly different frequency, for example, just outside the ham band.  I may 
>> someday investigate trying to do that with the K3.
>> 
>> I'm just guessing, but it seems Elecraft took a different approach in using 
>> the very wide bandwidth.  This increases the peak amplitude of the noise 
>> pulses, allowing them to be detected at a higher threshold while, under 
>> crowded band conditions, the strongest signal remains about the same.
>> 
>> By the way, many have noticed, I'm sure, that noise blankers are at times 
>> much more effective than at others, even if the characteristics of the noise 
>> are the same.  Generally, they work great when there are no strong signals 
>> around.  When there are strong signals in the NB filter passband, the noise 
>> detection threshold goes up as a result of NB AGC action, and the same noise 
>> pulses may not be detected at all.  That can happen even when the obvious 
>> distortion from the NB isn't present.
>> 
>> 73,
>> 
>> Scott  K9MA
>> 
>> 
>> On Dec 12, 2010, at 9:59 AM, David F. Reed wrote:
>> 
>>> Hi folks;
>>> 
>>> Yes, I really love my K3 in spite of my questions and gripes; here they are:
>>> 
>>>   1. During the 10 meter contest, I was up around 28.400 operating SSB
>>>  with the NB on, when I noticed that I was getting a strong CW
>>>  signal pumping my AGC (or so it seemed).
>>> 
>>>  In doing a little research, I found the cw station responsible was
>>>  down at 28.023, at about S9+40 db; by call, I know the station and
>>>  that he is about 3 miles away.  Far enough and weak enough that I
>>>  should not be receiving this sort of interference I think, given
>>>  there are no key clicks, etc.
>>> 
>>>  I turn off the NB, and it clears up completely, even 500Hz away,
>>>  let alone 300 or 400 KHz away.   I go back up, no problem except I
>>>  want to use the NB; turn it back on, problem re-appears.
>>> 
>>>  This seems to be an artifact of how the NB is implemented,
>>>  rendering it useless under these sorts of circumstances.
>>> 
>>>  Am I missing something, out of adjustment, or ???
>>> 
>>>   2. The power switch - early serial number (1476); my power switch -
>>>  well the rubber / plastic part you press on - is starting to look
>>>  like a mouse has nibbled on it, with little divots falling off
>>>  along the top and right side edges.  It is looking qu

Re: [Elecraft] K3 in ARRL10

[Edward R. Cole]

I have the 6m ARR P50VDG Gasfet preamp and KVX3.  I wondered if the 
P50VDG may have gain at 28-MHz?  I entered 28.400 and alternated 
between the P50VDG and the internal PRE.  There were no signals to 
check this on but with white noise the P50VDG shows slightly less 
s-meter reading than the PRE.  No way to determining whether that is 
due to different gain or lower noise figure?  With both off s-meter 
reads zero with PRE S-2.  Antenna is Hygain TH3mk4 triband yagi.


73, Ed - KL7UW, WD2XSH/45
==
BP40IQ   500 KHz - 10-GHz   www.kl7uw.com
EME: 144-1.4kw, 432-100w*, 1296-testing*, 3400-winter?
DUBUS Magazine USA Rep dubus...@hotmail.com
==
*temp not in service 
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Re: [Elecraft] WTB KRC2

[K5WA]

Phil,

I've actually got 2 KRC2s that I recently replaced with a PLC system.  I had
not thought of a price yet and was going to list them on eBay over
Christmas.  Probably $100 each is a fair price.  They both work great but I
had them mounted underneath my SO2R desk and am not overly worried about
cosmetic appearances, so if a mint condition showpiece is one of your
criteria, these probably won't interest you.  The terminals inside the KRC2
would probably need to be cleaned up a bit because I re-wired them a couple
of times and the small metal wire catcher inside the screw terminals tends
to distort each time it is used.  I also just cut the wires when I pulled
them out of services because I didn't want to stress the terminals again
until I needed to insert new wires.  The one marked "Radio A" has 12 VDC
cable connected to the back of the power plug and I think that was because
the power plug had some play in the connection and would occasionally loose
power so I just soldered it in place.  I've actually forgotten exactly why I
did it that way but it works fine when powered up.

Anyway, that's a pretty poor description so I think I'll send you a picture
as well.  ;-)  Link to pictures:
http://picasaweb.google.com/so2rso2r/KRC2sForSale?authkey=Gv1sRgCKmqttiaj6-j
LA#slideshow/5550608604401026066

They're all yours if you want one or both.  I'll send a response to the
reflector as well now that you've gotten me motivated to send them off to a
new home.

73,
Bob K5WA


 


Message: 5
Date: Tue, 14 Dec 2010 10:59:56 -0500
From: "Phil LaMarche" 
Subject: [Elecraft] WTB: KRC2
To: 
Message-ID: <02ae01cb9ba7$f40bd150$dc2373...@verizon.net>
Content-Type: text/plain;   charset="us-ascii"

Does anyone have one surplus to your need?  Price please.

 

Phil

 

Philip LaMarche

 

LaMarche Enterprises, Inc

  p...@lamarcheenterprises.com

  www.LaMarcheEnterprises.com 

 

727-944-3226

727-937-8834 Fax

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[Elecraft] K2: WTB: KDSP2

[Andrew Moore]

I'd like to find a KDSP2 module for the K2 if someone wants to sell or
trade.

Thanks,
--Andrew, NV1B
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Re: [Elecraft] K3 Memory Editor

[Rose]

David,

The 6M repeater offsets here in the US are either 1.0 or 1.6 MHZ.  There are
exceptions, but not many.  A duplexer for only a .5 MHZ frequency separation
would be difficult to build.

73!

Ken Kopp - K0PP
Montana VHF / UHF Frequency Coordinator
elecraftcov...@gmail.com

On Tue, Dec 14, 2010 at 1:50 AM, David Pratt  wrote
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Re: [Elecraft] K3 Memory Editor

[David Pratt]

It's obviously not too difficult for the repeater keepers in the UK,
Ken. All the 6 metre repeaters on 50MHz have a input/output offset of
500kHz.

73 de David G4DMP

In a recent message, Rose  writes
>The 6M repeater offsets here in the US are either 1.0 or 1.6 MHZ. 
>There are exceptions, but not many.  A duplexer for only a .5 MHZ
>frequency separation would be difficult to build.
-- 
 + - - - - - - - - - - - - - - - - +
 | David M Pratt, Kippax, Leeds.   |
 | Website: http://www.g4dmp.co.uk |
 + - - - - - - - - - - - - - - - - +



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Re: [Elecraft] OT: possible ham operation in the region of 415-526.5 Khz

[Augie "Gus" Hansen]

On 12/14/2010 8:41 AM, Johnny Siu wrote:

> ...
> My questions are :
> 1.  practically speaking, apart from huge traditional wire antenna, are there
> any other antennas of managable size (also reasonable efficiency) which can be
> easily set up under distress situation?

I built a magnetic loop that covers the range of 160-80 meters. It 
consists of three turns of 7/8" hard line as the loop conductor and 
a remotely controlled vacuum variable capacitor for tuning. The 
antenna is just a tad over six feet in diameter. It can be tuned 
down to about 1.5 MHz with a 500 pF vacuum variable. With a longer 
loop conductor (either more turns or larger antenna diameter) and a 
1000 pF VVC, such an antenna could get down to the 600 meter band. 
The instantaneous bandwidth is quite narrow (~2 kHz), suitable for 
CW and data modes, but not SSB.

> 2.to make communciations of say within 200-300km, what ERP is required?

I have worked all over North America from Colorado (~2000 mile 
range) with this antenna running only 100 watts during several 
contests, and daytime regional coverage is typically out to about 
200 miles using 500 watts. The antenna hangs from a tree branch with 
the bottom of the loop about 8 feet above ground.

> 3.for a segment of 15Khz, voice communciation seems quite restrictive.  
> How
> efficent will it be under digital mode (not CW) such as Pactor?

The three-turn mag loop typically has a 10-15% transmitting 
efficiency at the low end of its tuning range if it is built well, 
and the nulls along the loop axis help in reducing at least one 
noise source, providing acceptable S+N/N performance on receive.

-
Johnny, I can send you a picture of my 160/80m version of this mag 
loop if you want. Its from an article in preparation for the 
antenneX on-line magazine.

73,
Gus Hansen
KB0YH

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Re: [Elecraft] K3 Memory Editor

[tux man]

On 12/14/2010 01:52 PM, David Pratt wrote:
> It's obviously not too difficult for the repeater keepers in the UK,
> Ken. All the 6 metre repeaters on 50MHz have a input/output offset of
> 500kHz.
>
> 73 de David G4DMP


that's why you folks in Europe get things done.
On this side, it's called "mass confusion" leading to no progress.

(smile)

72
Ron, wb1hga
"as you slide down the bannister of life, may the splinters point the 
wrong way"
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Re: [Elecraft] K3 Memory Editor

[Geoffrey Mackenzie-Kennedy]

David,

FWIW back in the Stone Age when I had VE callsigns, the input/output 
offset of the N.American 2m repeaters was usually 600 kHz. The same offset 
was used on 6m, although there were not any local repeaters on 6m at the 
time (1950-1974)

73,
Geoff
GM4ESD


David Pratt wrote on Tuesday, December 14, 2010, at 6:52 PM:

> It's obviously not too difficult for the repeater keepers in the UK,
> Ken. All the 6 metre repeaters on 50MHz have a input/output offset of
> 500kHz.





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[Elecraft] Thanks to the list!

[Phil LaMarche]

I found a decoder that I asked for this morning...

 

Phil

 

Philip LaMarche

 

LaMarche Enterprises, Inc

  p...@lamarcheenterprises.com

  www.LaMarcheEnterprises.com 

 

727-944-3226

727-937-8834 Fax

727-510-5038 Cell 

 

  www.w9dvm.com

 

K3 #1605

 

CCA 98-00827

CRA 1701

W9DVM

 

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Re: [Elecraft] OT: possible ham operation in the region of 415-526.5 Khz

[Augie "Gus" Hansen]

I initially responded only to Sam's request for the 160/80m mag loop 
picture, but have had several direct requests also. So here is the 
reply for anyone else who may be interested.

--

On 12/14/2010 1:00 PM, Sam Morgan wrote:
> I would like a pic please
> and even a copy of the article if possible
> I find the antennx experience just to distressing to try to find it
>

Hi Sam,

Most of my articles are behind the "pay wall" on antenneX, so I 
cannot distribute them. But I uploaded a picture of the three-turn 
160/80 meter mag loop to the following antenneX page, which is 
freely viewable:

http://download.antennex.com/listarch/files/3t6d_8_2.jpg

The VVC is in the box at the top along with the motor and limit 
switches. The control voltage is obtained from the small  box just 
above the bottom of the structural PVC frame. That box separates the 
DC motor-control voltage from the RF, passing the RF through a 
capacitor to the small driver loop. The DC goes up a twisted pair 
cable inside the vertical PVC support tube. The VVC handles up to 15 
KV at up to 65 amps.

I hope this helps,
Gus, KB0YH
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[Elecraft] AF1 - Practical Use Question

[stan levandowski]

I just completed the AF1 kit and it appears to work properly.  It 
doesn't seem like it does all that much more for my K2 on which I 
already have the KAF2 installed.  But on my KX1 it definitely makes a 
difference.

Here's the rub and I'm wondering how other users of the AF-1 handle it:

Whether it's the K2 or the KX1 I'm using it on, when I go to transmit I 
lose the sidetone!  I'm no technical genius but I've pretty much figured 
out that this is to be expected with the AF-1 being in the audio line 
out and not an integral part of the transceiver like the KAF2 with which 
there is no such problem.

So I adjust the filter and bring out a weak signal nice a clear and just 
right, but when I want to transmit I have to turn the AF-1 OFF in order 
to hear my sidetone.

Is this just the nature of the beast or did I miss something here?

Thanks for any input,

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] Happy Day, I just ordered my K3 and P3

[Chuck Shefflette]

Glad to hear you're finally getting it. I know you've been waiting. Somehow I
ended up with 2 K3s - the second was a lightning victim which I've since
fixed and works very nicely. (Thanks to Elecraft for replacing the MCU as it
had a little issue!)

73 - Chuck - AA3CS

-
73 - Chuck, AA3CS
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[Elecraft] FS Various items

[Julius Fazekas n2wn]

I have two original unbuilt N0SS K6XX CW tuning kits for the K2: $17 each
shipped USA

Unbuilt Atlanticon 2006 AmQRP Signal Quality Monitor, board & LEDs, circuit
diagram, as offered $10 shipped CONUS

Unbuilt WA6OTP PTO/VFO kit: $22 shipped CONUS

New K2KEYMDKT   K2 Keying Bandwidth Mod Kit: $19 shipped USA

Mixed group: E850058 3V lithium Battery; K1 MCU 106; FW KPA 1.06 (2); FW
KDSP2 3.10; SM MAR6 (24)
not sure how to price this, make offer please.

RadCom August 2007 through December 2008, missing May & August 2008 (if I
find them before shipping these, they will be included)  $25 shipped CONUS
(media rate)

Pelican 1470 case (black), this is setup as a computer case with pockets and
sholder strap, unused but a bit dusty from sitting around: $65 shipped CONUS

E-MU 1212m PCI Digital Audio System (sound cards), new, $50 shipped CONUS

Azden PCS-7500H 6m FM mobile rig, used, with mic and power cord (new) $135
shipped CONUS

Tons of parts around, if you're looking for anything drop me a note.

Please respond off reflector. Thnaks for the space and Happy Holidays to
all!

73,
Julius



-
Julius Fazekas
N2WN

Tennessee Contest Group
http://www.k4ro.net/tcg/index.html

Tennessee QSO Party
http://www.tnqp.org/

Elecraft K2/100 #4455
Elecraft K3/100 #366
Elecraft K3#1875
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[Elecraft] OT: possible ham operation in the region of 415-526.5 Khz

[Johnny Siu]

Thanks to all the replies here and also off-the-list replies.
 73


Johnny VR2XMC 


  
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Re: [Elecraft] OT: possible ham operation in the region of 415-526.5 Khz

[Ron D'Eau Claire]

Not 'off topic' at all Johnny since it relates to Ham radio - 

There is no "magic" way to get high efficiency with an electrically-short
antenna. All antennas are subject to same laws of physics. The underlying
problem is high ohmic losses resulting from the unavoidably high RF currents
flowing in any short antenna - doublet, Marconi or loop. These currents are
inversely proportional to the size of the antenna in wavelengths, and
increase to huge values as the antenna becomes very short (less than 1/8
wavelength). 

That said, amazing results can be had from antennas that are astoundingly
poor "on paper". Even commercial shipboard systems operating in the 425-500
kHz range had what we'd consider abysmal antennas. (Only the huge shore
stations had anything like a "full size" antenna.) The typical end fed wire
used with the 500 watt CW radios on ships were usually less than 200 feet
long. At 425 kHz the antenna was only 1/10th of a wavelength long. That's
equivalent to trying to work on 80 meters with a 20 foot end fed wire. 

Such an antenna might be only 4 or 5 percent efficient at best, but with 100
watts output that's still 4 or 5 watts radiated. As any QRP enthusiast will
tell you, that's enough to "work the world". 

About ten years ago a group of us (the 600 meter research group) ran some
experiments on that band with some very good results using marginal antennas
and low power. Our objective was to explore exactly what your group is
pursuing - the practicality of MF (300 kHz - 3 MHz) communications for
emergency work even with the sort of antennas practicable on an urban
setting. Unfortunately it was a very short-lived experiment caught up in a
political struggle between the FCC and the US Coast Guard over control of
the 600 meter band (that was before the current ARRL experimental group work
on that band). We were using CW, since that's still the most
spectrum-efficient mode with the greatest "bang for the watt", providing
superb text messaging in the hands of trained operators. 

For emergency use, the famous "Gibson Girl" hand-cranked lifeboat
transmitter only put out about 5 watts amplitude-modulated CW (MCW) on 500
kHz and had, under the most ideal conditions, an end fed wire 100 or 200
feet long (attached to a box kite or balloon). Frequently it was much, much
shorter, depending upon weather conditions. Such a setup was considered to
have a working range of up to 200 miles. I know of at least one
well-documented case where such a transmitter was heard halfway around the
world, causing ships in the Pacific to search for a lifeboat that was
actually floating in the Mediterranean Sea, and they were hearing it on a
small receiving loop antenna trying to home in on the signal's source! 

It seems that 600 meter communications using a very short antenna and
moderate power should be entirely practical over tens of miles in the
daytime and perhaps hundreds of miles at night. Whether 600 meters offers
any advantage over a similar setup on 160 meters is an open question. 

Ron AC7AC

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Johnny Siu
Sent: Tuesday, December 14, 2010 7:42 AM
To: Elecraft
Subject: [Elecraft] OT: possible ham operation in the region of 415-526.5
Khz

 
My questions are :
1.  practically speaking, apart from huge traditional wire antenna, are
there 
any other antennas of managable size (also reasonable efficiency) which can
be 
easily set up under distress situation?
2.    to make communciations of say within 200-300km, what ERP is required?
3.    for a segment of 15Khz, voice communciation seems quite restrictive. 
How 
efficent will it be under digital mode (not CW) such as Pactor?
 
I must admit that I am not a radio man by profession and have limited
knowledge 
on MF radio operation.  I am looking forward to your advice and apologise
for 
the band width in this mail reflector.
 73


Johnny VR2XMC 


  
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Re: [Elecraft] AF1 - Practical Use Question

[Don Wilhelm]

  Stan,

The AF1 has a sharp audio filter, and there is no "mute" signal into it, 
so any tone at the AF1 center frequency should get through.

BUT - the AF1 center frequency must be at the same pitch as your 
sidetone for that tone to get through the AF1 filter.

I suspect that the menu setting for STP on your K2 and KX1 is not the 
same as the center frequency you have set on the AF1.

73,
Don W3FPR

On 12/14/2010 5:07 PM, stan levandowski wrote:
> I just completed the AF1 kit and it appears to work properly.  It
> doesn't seem like it does all that much more for my K2 on which I
> already have the KAF2 installed.  But on my KX1 it definitely makes a
> difference.
>
> Here's the rub and I'm wondering how other users of the AF-1 handle it:
>
> Whether it's the K2 or the KX1 I'm using it on, when I go to transmit I
> lose the sidetone!  I'm no technical genius but I've pretty much figured
> out that this is to be expected with the AF-1 being in the audio line
> out and not an integral part of the transceiver like the KAF2 with which
> there is no such problem.
>
> So I adjust the filter and bring out a weak signal nice a clear and just
> right, but when I want to transmit I have to turn the AF-1 OFF in order
> to hear my sidetone.
>
> Is this just the nature of the beast or did I miss something here?
>
>
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Re: [Elecraft] AF1 - Practical Use Question

[Ron D'Eau Claire]

Stan, it sounds like you do not have the AF1 tuned to the same frequency as
the K2 sidetone. It is simply a filter, so if it is set up for the same
frequency as your sidetone, it will not affect the sidetone in any way. You
will hear it normally during transmit. 

That also might be the reason why it doesn't seem all that effective. You
need to adjust the tuning to find the "peak" right on your sidetone
frequency and leave it there unless you are listening to a signal slightly
off of your frequency. Even then, it's best to use RIT (or SPLIT) to tune
the rig to the proper frequency so the signal is correctly positioned in the
I.F. passband. 

Once you have the AF1 tuned to the sidetone frequency (and a signal properly
tuned in), you can increase the gain to "enhance" the signal or make it 'pop
out' of the background just like APF on the K3. Suggest you use BP2 position
on the bandpass switch for optimum effect. 

The Low Pass filter adjustment on the AF1 will normally be full clockwise
(no high frequency cutoff). If you have some background hiss, you can try
reducing the cutoff frequency (turn the control CCW) but be sure you don't
move the cutoff frequency below your peak audio frequency set by the BP
tuning or the LP filter will be "fighting" the bandpass filter :-) 

Ron AC7AC

-Original Message-
I just completed the AF1 kit and it appears to work properly.  It 
doesn't seem like it does all that much more for my K2 on which I 
already have the KAF2 installed.  But on my KX1 it definitely makes a 
difference.

Here's the rub and I'm wondering how other users of the AF-1 handle it:

Whether it's the K2 or the KX1 I'm using it on, when I go to transmit I 
lose the sidetone!  I'm no technical genius but I've pretty much figured 
out that this is to be expected with the AF-1 being in the audio line 
out and not an integral part of the transceiver like the KAF2 with which 
there is no such problem.

So I adjust the filter and bring out a weak signal nice a clear and just 
right, but when I want to transmit I have to turn the AF-1 OFF in order 
to hear my sidetone.

Is this just the nature of the beast or did I miss something here?

Thanks for any input,

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] AF1 - Practical Use Question

[stan levandowski]

  Stan, it sounds like you do not have the AF1 tuned to the same 
frequency as
> the K2 sidetone.
 
-
Don and Ron, thank you both.  I guess I have some studying to do in the 
K2 and KX1 manuals.  My simple mind doesn't always grasp some of these 
concepts at first!.  You've put me on the right track now and confirmed 
that it's my faulty set up and operation, not the nature of the option.

I'll wake up tomorrow and get serious about remedying it; tonight I've 
dusted off my old bug and I'm going to try my luck in the NAQCC Sprint.

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 1st IF NB [was: Questions and gripes]

[Fred Jensen]

On 12/14/2010 9:28 AM, Guy Olinger K2AV wrote:

> I was at first surprised that the analog IF blanking was retained in
> the K3.  But over time there have been many posts about successful use
> of the IF blanking and IF/DSP combinations, validating Elecraft's
> retention, however ancient the issues and artifacts of the IF method
> may be.

FWIW:  I thought the 1st IF NB in my K3 was broke.  A friend suggested I 
pay more attention to the adjustment.  Reluctantly [I figured I already 
knew how to run a NB, been a ham a lot longer than him], I took his 
advice leaving DSP NB off so as not to confuse things.  He is right.  In 
the contests and other operating over the last 45 or so days, I find 
that the 1st IF NB will significantly reduce, and in a number of cases 
totally eliminate a wide variety of noise, including power mains hash, 
rain static, ignition noise [neighbor kid has Dodge Charger twice as old 
as he is that he continually tunes up in the driveway], and key clicks.

The key is adjustment of the "level" *slowly" rather than running it 
through it's range quickly, hearing no difference and giving up.  A 
number of times in last weekend's QRRL 10m, I clicked the NB off just to 
make sure it was working.  It was.  I begin to hear the NB punching 
holes in the signal and distorting it at the higher settings, as I would 
expect.  NAR-3/4 seems to hit most of the noise I experience, 
occasionally really raucous power mains hash succumbs to MED-1/2.  I 
don't get many artifacts until I get to the WID settings.

Eventually, I'll go after NR the same way, it hasn't seemed to be 
working for me either, but I'm pretty sure I'm just too impatient.  My 
K3 is definitely NOT my SX-28, which of course had fewer menu settings.

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] AF1 - Practical Use Question

[Don Wilhelm]

  Stan,

Another subtle point that some do not grasp without further information 
is that the sidetone pitch entered into the menu is also used to control 
the transmit offset (except on the K1).  If you do not have your 
sidetone pitch and the audio frequency that you are listening to the 
sending station in agreement, then you will end up coping him "off 
frequency".

So bottom line - set the menu sidetone pitch to the same frequency as 
you wish to listen to (and have your IF filters aligned to), and you 
will potentially make more contacts.

73,
Don W3FPR

On 12/14/2010 7:02 PM, stan levandowski wrote:
>Stan, it sounds like you do not have the AF1 tuned to the same
> frequency as
>> the K2 sidetone.
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Re: [Elecraft] K3 Questions and gripes

[Guy Olinger K2AV]

Your "In the absence of strong signals" caveat is a big one.

The entirely DSP key-click nullification works.  I would think that if
a pulse is detected, and the wave shape of the pulse artifact after
filtering is known, that the known shape can be used in some digital
fashion to remove it.  Or to get away from the analog
detect-and-then-remove modus, if the pulse artifact is detected,
simply remove it, no pre-notification required.

I have a pole around here somewhere that goes bad from time to time,
and the pulses are extremely narrow and spikey.  The IF method narrow
3 or 4 gets them nicely --- except when there is a contest and a band
full of very loud signals, in which case the ancient analog
noise-blank artifacts are there too, making it unusable.  The DSP
method is not as clean as the IF on a quiet band, but it does usable
good in a contest.

73, Guy.

On Tue, Dec 14, 2010 at 12:48 PM, Scott Ellington
 wrote:
> My comments apply to ONLY the IF (hardware) noise blanker.  Sorry I didn't 
> make that clear, but I'm a hardware guy.
>
> The reason for having the IF NB is that short-duration noise pulses, like the 
> ubiquitous power line noise, must be detected ahead of narrow bandpass 
> filters, which effectively lengthen the pulses.  This allows the noise gate 
> to switch off during the short noise pulse, with minimal effect on the 
> desired signals.  I don't believe any kind of DSP cleverness, applied after 
> the IF crystal filter, can be as effective for this kind of noise.  In the 
> absence of strong signals, as I'm sure many others have found, these noise 
> blankers can be very effective indeed.
>
> 73,
>
> Scott  K9MA
>
>
> On Dec 14, 2010, at 11:28 AM, Guy Olinger K2AV wrote:
>
>> The K3 has a dual methodology.  1) DSP and 2) traditional analog IF
>> pulse detection noise blanking which shuts off the IF for very short
>> intervals around the pulse.
>>
>> Doesn't your commentary only apply to the IF NB methods of the K3?
>> The DSP methods take place in firmware, analyzing and adjusting the
>> number stream to "remove" noise.  The very successful key click
>> suppression only works with the IF method off, and using the DSP
>> method T2-7 and T3-7.
>>
>> I agree with your analysis as long as it is qualified to the K3 NB's
>> IF method. Your reasoning below also pertains to why the IF method
>> needs to be off for key click suppression.  Digital NB artifacts are
>> not related to the after-effects of analog IF noise blanking.
>>
>> I was at first surprised that the analog IF blanking was retained in
>> the K3.  But over time there have been many posts about successful use
>> of the IF blanking and IF/DSP combinations, validating Elecraft's
>> retention, however ancient the issues and artifacts of the IF method
>> may be.
>>
>> 73, Guy.
>>
>> On Tue, Dec 14, 2010 at 11:28 AM, Scott Ellington
>>  wrote:
>>> The K3 noise blanker bandpass filter appears to have a bandwidth of about 
>>> 400 kHz, so any strong signal within that bandwidth will affect its 
>>> operation.  This is a problem with all noise blankers of this type, as  
>>> they can't detect noise pulses smaller than the strongest signal within the 
>>> filter bandwidth.  Some use a narrower filter, perhaps 15 kHz, to minimize 
>>> the chance a strong signal is in its passband.  That, of course, us usually 
>>> still far too wide during a contest, and the noise blanker just won't work 
>>> with a narrower bandwidth.  One solution is the "Evasive Noise Blanker", 
>>> which essentially uses a second receiver to detect noise pulses at a 
>>> slightly different frequency, for example, just outside the ham band.  I 
>>> may someday investigate trying to do that with the K3.
>>>
>>> I'm just guessing, but it seems Elecraft took a different approach in using 
>>> the very wide bandwidth.  This increases the peak amplitude of the noise 
>>> pulses, allowing them to be detected at a higher threshold while, under 
>>> crowded band conditions, the strongest signal remains about the same.
>>>
>>> By the way, many have noticed, I'm sure, that noise blankers are at times 
>>> much more effective than at others, even if the characteristics of the 
>>> noise are the same.  Generally, they work great when there are no strong 
>>> signals around.  When there are strong signals in the NB filter passband, 
>>> the noise detection threshold goes up as a result of NB AGC action, and the 
>>> same noise pulses may not be detected at all.  That can happen even when 
>>> the obvious distortion from the NB isn't present.
>>>
>>> 73,
>>>
>>> Scott  K9MA
>>>
>>>
>>> On Dec 12, 2010, at 9:59 AM, David F. Reed wrote:
>>>
 Hi folks;

 Yes, I really love my K3 in spite of my questions and gripes; here they 
 are:

   1. During the 10 meter contest, I was up around 28.400 operating SSB
      with the NB on, when I noticed that I was getting a strong CW
      signal pumping my AGC (or so it seemed).

      In doing a little researc

Re: [Elecraft] AF1 - Practical Use Question

[stan levandowski]

Don, thanks very much.  Now all I have to do is figure out how to do all 
this and try to understand it at the same time.  My sidetone pitch on 
the K2 is set to 0.60 and I seem to recall that was a K2 default option 
which I didn't mess around with.  Presently, I don't seem to have any 
difficulty with the transmit offset.  I use "Spot" to make the other 
station "disappear" and Voila - contact!

I'll wake up tomorrow and get working on understanding and fixing all 
this.

73,

Stan Levandowski WB2LQF
HF QRP CW -- Doing more with less for over 50 years!
QCWA #35038   OOTC #4558   NAQCC #4740   SKCC #6488   FISTS #14992


On Tue, Dec 14, 2010 at 8:02 PM, Don Wilhelm wrote:

> Stan,
>
> Another subtle point that some do not grasp without further 
> information is that the sidetone pitch entered into the menu is also 
> used to control the transmit offset (except on the K1).  If you do not 
> have your sidetone pitch and the audio frequency that you are 
> listening to the sending station in agreement, then you will end up 
> coping him "off frequency".
>
> So bottom line - set the menu sidetone pitch to the same frequency as 
> you wish to listen to (and have your IF filters aligned to), and you 
> will potentially make more contacts.
>
> 73,
> Don W3FPR
>
> On 12/14/2010 7:02 PM, stan levandowski wrote:
>>Stan, it sounds like you do not have the AF1 tuned to the same
>> frequency as
>>> the K2 sidetone.
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Re: [Elecraft] AF1 - Practical Use Question

[Don Wilhelm]

  Stan,

If you have problems deciphering the AF1 peaking controls to place the 
peak at 600 Hz (or whatever your chosen sidetone pitch may be), I 
suggest using Spectrogram (or Spectrum Lab or another FFT audio spectrum 
analyzer) to set the AF1 peak to the same frequency as your K2 
sidetone.  Use a broadband noise source at the K2 antenna and peak the 
displayed response at your chosen sidetone pitch.  The AF1 has a wide 
range of frequencies, and if not set correctly, you will not enjoy the 
full capability of this audio filter.

You can "set it by ear" if you are good at such stuff, but many cannot 
do that - I use Spectrogram as my "crutch".

73,
Don W3FPR

On 12/14/2010 8:23 PM, stan levandowski wrote:
> Don, thanks very much.  Now all I have to do is figure out how to do all
> this and try to understand it at the same time.  My sidetone pitch on
> the K2 is set to 0.60 and I seem to recall that was a K2 default option
> which I didn't mess around with.  Presently, I don't seem to have any
> difficulty with the transmit offset.  I use "Spot" to make the other
> station "disappear" and Voila - contact!
>
> I'll wake up tomorrow and get working on understanding and fixing all
> this.
>
> 73,
>
> Stan Levandowski WB2LQF
> HF QRP CW -- Doing more with less for over 50 years!
> QCWA #35038   OOTC #4558   NAQCC #4740   SKCC #6488   FISTS #14992
>
>
> On Tue, Dec 14, 2010 at 8:02 PM, Don Wilhelm wrote:
>
>> Stan,
>>
>> Another subtle point that some do not grasp without further
>> information is that the sidetone pitch entered into the menu is also
>> used to control the transmit offset (except on the K1).  If you do not
>> have your sidetone pitch and the audio frequency that you are
>> listening to the sending station in agreement, then you will end up
>> coping him "off frequency".
>>
>> So bottom line - set the menu sidetone pitch to the same frequency as
>> you wish to listen to (and have your IF filters aligned to), and you
>> will potentially make more contacts.
>>
>> 73,
>> Don W3FPR
>>
>> On 12/14/2010 7:02 PM, stan levandowski wrote:
>>> Stan, it sounds like you do not have the AF1 tuned to the same
>>> frequency as
 the K2 sidetone.
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[Elecraft] Macro generation

[N6FB]

I am totally confused on generating a macro, and the more I read on  the 
Utility Help page, the more confused I get.  Evidently, there is  somewhere a 
list of what are called "K3 Commands" which when strung together  form a 
custom macro.  But where is the list of such  commands?
 
Can anyone who is more familiar with this than I am give me  a  step by 
step tutorial on how to create and implant in my K3 at location  PF1, a macro 
that will turn on the APF and the RIT??? ( I am assuming this macro  will 
turn off if the PF1 is pushed a second time---or is that a bad  assumption?)
 
Gee it is tough to have spent your whole career in aerospace  electronics 
and find yourself completely out-of-date after being retired for 17  years.
 
 Bill  N6FB
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Re: [Elecraft] Macro generation

[Matt Zilmer]

Try The K3 Programmer's Reference.  You'll find it near the bottom of
the K3 Manual page on Elecraft's web site.

73,
matt W6NIA

On Tue, 14 Dec 2010 20:37:04 -0500 (EST), you wrote:

>I am totally confused on generating a macro, and the more I read on  the 
>Utility Help page, the more confused I get.  Evidently, there is  somewhere a 
>list of what are called "K3 Commands" which when strung together  form a 
>custom macro.  But where is the list of such  commands?
> 
>Can anyone who is more familiar with this than I am give me  a  step by 
>step tutorial on how to create and implant in my K3 at location  PF1, a macro 
>that will turn on the APF and the RIT??? ( I am assuming this macro  will 
>turn off if the PF1 is pushed a second time---or is that a bad  assumption?)
> 
>Gee it is tough to have spent your whole career in aerospace  electronics 
>and find yourself completely out-of-date after being retired for 17  years.
> 
> Bill  N6FB
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Re: [Elecraft] Macro generation

[Tony Estep]

Bill,

Get this doc:
http://www.elecraft.com/manual/K3_Pgmrs_Reference_Rev_C14.pdf

Skip pp 1-4 for the moment and go to pg 5. Follow the numbered cookbook
steps in "Creating and Using Macros" to make a sample macro or two. At that
point, you'll have an idea of what's going on, and soon you'll be rocking
and rolling.

Tony KT0NY
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Re: [Elecraft] Macro generation

[Don Wilhelm]

  Bill,

The "key" to the macros is the K3 Programmer's Reference.  A macro can 
contain any of the commands found in the K3 Programmer's Reference, but 
it cannot "read" responses from the K3.

Do not assume that if you create a macro and assign it to a key that it 
will toggle on and off.  Sometimes it can do that, but in most cases, 
you will need 2 macros (and 2 keys) to accomplish the on/off states.

The macros that "toggle" a setting can cause unpredictable results 
because the macro (within itself) does not know the previous state of 
the K3 - it takes more intelligence than just the macro instructions to 
"do this" to determine the state of the K3 prior to issuing a macro.

In other words, the macros must be confined to commands that say "do 
this" without additional conditions.  If your need is to do conditional 
commands based on the prior state of things, then an application (such 
as a logger application) which reads responses from the K3 would serve 
your needs better.

73,
Don W3FPR

On 12/14/2010 8:37 PM, n...@aol.com wrote:
> I am totally confused on generating a macro, and the more I read on  the
> Utility Help page, the more confused I get.  Evidently, there is  somewhere a
> list of what are called "K3 Commands" which when strung together  form a
> custom macro.  But where is the list of such  commands?
>
> Can anyone who is more familiar with this than I am give me  a  step by
> step tutorial on how to create and implant in my K3 at location  PF1, a macro
> that will turn on the APF and the RIT??? ( I am assuming this macro  will
> turn off if the PF1 is pushed a second time---or is that a bad  assumption?)
>
> Gee it is tough to have spent your whole career in aerospace  electronics
> and find yourself completely out-of-date after being retired for 17  years.
>
>   Bill  N6FB
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Re: [Elecraft] AF1 - Practical Use Question

[stan levandowski]

Don, I don't have any of that fancy equipment unfortunately.  But I just 
met with success anyway!

I was expecting to hear a "pure" sidetone - what I hear is a buzzing 
sound along with some modulation that sounds reasonably close to the 600 
Hz I set.  When I took my hand away from the AF1, the buzzing stopped 
and the sidetone, still sounding just a little bit constricted in the 
BP2 position (not nice and pure and loud like in the barefoot K2) was 
completely reasonable and useable.

There is a Sprint on right now.  I found an extremely weak signal on 
7.033 with lots of QRM.  Using the AF1 I was able to copy him and QSL 
the exchange.  And he came right back to me so apparently I don't have 
any issues with offsets.

I am quite impressed by this experience.  And I don't even know yet if 
I'm really using it correctly!

Very impressive item!

I have an enclosure on order and that should solve the hand issue.  In 
receive, the hand on the knob does nothing bad; on transmit it does.

Thanks for your assist tonight!



Stan Levandowski WB2LQF
HF QRP CW -- Doing more with less for over 50 years!
QCWA #35038   OOTC #4558   NAQCC #4740   SKCC #6488   FISTS #14992


On Tue, Dec 14, 2010 at 8:34 PM, Don Wilhelm wrote:

> Stan,
>
> If you have problems deciphering the AF1 peaking controls to place the 
> peak at 600 Hz (or whatever your chosen sidetone pitch may be), I 
> suggest using Spectrogram (or Spectrum Lab or another FFT audio 
> spectrum analyzer) to set the AF1 peak to the same frequency as your 
> K2 sidetone.  Use a broadband noise source at the K2 antenna and peak 
> the displayed response at your chosen sidetone pitch.  The AF1 has a 
> wide range of frequencies, and if not set correctly, you will not 
> enjoy the full capability of this audio filter.
>
> You can "set it by ear" if you are good at such stuff, but many cannot 
> do that - I use Spectrogram as my "crutch".
>
> 73,
> Don W3FPR
>
> On 12/14/2010 8:23 PM, stan levandowski wrote:
>> Don, thanks very much.  Now all I have to do is figure out how to do 
>> all
>> this and try to understand it at the same time.  My sidetone pitch on
>> the K2 is set to 0.60 and I seem to recall that was a K2 default 
>> option
>> which I didn't mess around with.  Presently, I don't seem to have any
>> difficulty with the transmit offset.  I use "Spot" to make the other
>> station "disappear" and Voila - contact!
>>
>> I'll wake up tomorrow and get working on understanding and fixing all
>> this.
>>
>> 73,
>>
>> Stan Levandowski WB2LQF
>> HF QRP CW -- Doing more with less for over 50 years!
>> QCWA #35038   OOTC #4558   NAQCC #4740   SKCC #6488   FISTS #14992
>>
>>
>> On Tue, Dec 14, 2010 at 8:02 PM, Don Wilhelm wrote:
>>
>>> Stan,
>>>
>>> Another subtle point that some do not grasp without further
>>> information is that the sidetone pitch entered into the menu is also
>>> used to control the transmit offset (except on the K1).  If you do 
>>> not
>>> have your sidetone pitch and the audio frequency that you are
>>> listening to the sending station in agreement, then you will end up
>>> coping him "off frequency".
>>>
>>> So bottom line - set the menu sidetone pitch to the same frequency 
>>> as
>>> you wish to listen to (and have your IF filters aligned to), and you
>>> will potentially make more contacts.
>>>
>>> 73,
>>> Don W3FPR
>>>
>>> On 12/14/2010 7:02 PM, stan levandowski wrote:
 Stan, it sounds like you do not have the AF1 tuned to the same
 frequency as
> the K2 sidetone.
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Re: [Elecraft] AF1 - Practical Use Question

[Ron D'Eau Claire]

The "buzz" is interesting. With the tight bandpass, the sidetone (and
received signals) from the K3 should be closer to a pure sine wave than
ever. 

Ron AC7AC

-Original Message-
Don, I don't have any of that fancy equipment unfortunately.  But I just 
met with success anyway!

I was expecting to hear a "pure" sidetone - what I hear is a buzzing 
sound along with some modulation that sounds reasonably close to the 600 
Hz I set.  When I took my hand away from the AF1, the buzzing stopped 
and the sidetone, still sounding just a little bit constricted in the 
BP2 position (not nice and pure and loud like in the barefoot K2) was 
completely reasonable and useable.



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[Elecraft] test

[NZ0T]

test
-- 
View this message in context: 
http://elecraft.365791.n2.nabble.com/test-tp5835280p5835280.html
Sent from the Elecraft mailing list archive at Nabble.com.
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[Elecraft] K3 poolside in Senegal

[Tony Estep]

This may have been mentioned on here before, but anyway I just was looking
at QSL cards and got a laugh out of the card from 6V7Z. It shows three happy
DXpeditioners dunking in a swimming pool, each next to a transceiver on the
pool rim; in the foreground Jo, DL4MAQ, is wearing headphones and tuning his
K3.

Tony KT0NY
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Re: [Elecraft] AF1 - Practical Use Question

[Don Wilhelm]

  Ron,

I wonder if the "buzz" is audio pickup from hand coupling.  I hear that 
a lot if I put my hand on the audio circuits of the KX1 (which I do for 
a test).  Since the AF1 (and all mini-modules) are open board circuits, 
I assume that is within the realm of possibility.

73,
Don W3FPR

On 12/14/2010 10:01 PM, Ron D'Eau Claire wrote:
> The "buzz" is interesting. With the tight bandpass, the sidetone (and
> received signals) from the K3 should be closer to a pure sine wave than
> ever.
>
> Ron AC7AC
>
> -Original Message-
> Don, I don't have any of that fancy equipment unfortunately.  But I just
> met with success anyway!
>
> I was expecting to hear a "pure" sidetone - what I hear is a buzzing
> sound along with some modulation that sounds reasonably close to the 600
> Hz I set.  When I took my hand away from the AF1, the buzzing stopped
> and the sidetone, still sounding just a little bit constricted in the
> BP2 position (not nice and pure and loud like in the barefoot K2) was
> completely reasonable and useable.
>
>
>
>
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Re: [Elecraft] K3 poolside in Senegal

[Ron D'Eau Claire]

Hey, talk about a good RF ground on that K3!

Ron AC7AC

-Original Message-
This may have been mentioned on here before, but anyway I just was looking
at QSL cards and got a laugh out of the card from 6V7Z. It shows three happy
DXpeditioners dunking in a swimming pool, each next to a transceiver on the
pool rim; in the foreground Jo, DL4MAQ, is wearing headphones and tuning his
K3.

Tony KT0NY

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Re: [Elecraft] Macro generation

[Dick Dievendorff]

Bill:  I attempted in the K3 Utility Help to describe how to use the K3
Utility Help to enter macros, but the commands are documented in the K3
Programmer's Reference.  There are a couple of places where the K3
Programmer's Reference is mentioned I would have hyperlinked it from the
Help Text, but the name of the file changes with each revision.  The current
version is located at
http://www.elecraft.com/manual/K3_Pgmrs_Reference_Rev_C14.pdf

The K3 Programmer's Reference commands you need to turn APF on and off are a
switch emulation command, in this case SWH29; listed as "Dual PB" on page 17
of the current K3 Programmer's Reference.  This is a toggle, if you Hold the
Dual PB button once, APF will be turned on (at least in CW mode it will). If
you hold it again, it'll be turned off. 

Turning RIT on and off can be accomplished as a toggle by tapping the RIT
button (SWT45;), which would change RIT on and off with each successive
button press, or by a command specifically designed to turn the RIT on and
off (RT0; and RT1;).

The K3 Utility Help does have step by step instructions on how to use the K3
Utility to get macros into the radio, but it doesn't duplicate the entire K3
Programmer's Reference, which is frequently enhanced as new commands are
introduced.

73 de Dick, K6KR
  



-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of n...@aol.com
Sent: Tuesday, December 14, 2010 5:37 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Macro generation

I am totally confused on generating a macro, and the more I read on  the 
Utility Help page, the more confused I get.  Evidently, there is  somewhere
a 
list of what are called "K3 Commands" which when strung together  form a 
custom macro.  But where is the list of such  commands?
 
Can anyone who is more familiar with this than I am give me  a  step by 
step tutorial on how to create and implant in my K3 at location  PF1, a
macro 
that will turn on the APF and the RIT??? ( I am assuming this macro  will 
turn off if the PF1 is pushed a second time---or is that a bad  assumption?)
 
Gee it is tough to have spent your whole career in aerospace  electronics 
and find yourself completely out-of-date after being retired for 17  years.
 
 Bill  N6FB
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[Elecraft] Virtual second RX

[vidi]

Hi Elecrafters

I need electronics boffins to answer my question:

Do you think it will be possible to feed VFO A audio to left headphone and when 
switching to VFO B it will be heard in the right headphone??

I do not have the necessary insight to answer that one myself, but was 
wondering if it could be done.  The reason for wondering about this is: If it 
was possible, one could have the K3 firmware, VERY rapidly,  push the REV 
button for you.  That way you will hear VFO A in one ear and B (taking very 
rapid turns) in the other and when you transmit, the VFO A will be your TX 
freq. This will be a 'virtual' second RX to easily find the freq of the last 
station worked in a DX pile up.  I use the 'REV' button extensively to do that.
 73
Vidi - ZS1EL
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Re: [Elecraft] AF1 - Practical Use Question

[Don Wilhelm]

  Stan,

If that "hand effect" occurs while transmitting, then it can be 
attributed to RF-in-the-shack.  The only cure for that is to work on 
your antenna system.  If your transmitting antenna is close to the 
operating position, there may be no real cure.  OTOH, if the transmit 
antenna is not coupling directly into your operating position, that may 
be an indication that RF from the antenna is being coupled back into the 
operating position - the use of baluns or transmission line chokes, or 
effective RF Grounds (try a 1/4 wave "counterpoise" wire) would be means 
to minimize that effect.

73,
Don W3FPR

On 12/14/2010 10:01 PM, Ron D'Eau Claire wrote:
> The "buzz" is interesting. With the tight bandpass, the sidetone (and
> received signals) from the K3 should be closer to a pure sine wave than
> ever.
>
> Ron AC7AC
>
> -Original Message-
> Don, I don't have any of that fancy equipment unfortunately.  But I just
> met with success anyway!
>
> I was expecting to hear a "pure" sidetone - what I hear is a buzzing
> sound along with some modulation that sounds reasonably close to the 600
> Hz I set.  When I took my hand away from the AF1, the buzzing stopped
> and the sidetone, still sounding just a little bit constricted in the
> BP2 position (not nice and pure and loud like in the barefoot K2) was
> completely reasonable and useable.
>
>
>
>
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Re: [Elecraft] Virtual second RX

[Don Wilhelm]

  Vidi,

If you have the KRX3 installed, the answer is yes.  Otherwise, no.

73,
Don W3FPR

On 12/15/2010 12:51 AM, vidi wrote:
> Hi Elecrafters
>
> I need electronics boffins to answer my question:
>
> Do you think it will be possible to feed VFO A audio to left headphone and 
> when switching to VFO B it will be heard in the right headphone??
>
> I do not have the necessary insight to answer that one myself, but was 
> wondering if it could be done.  The reason for wondering about this is: If it 
> was possible, one could have the K3 firmware, VERY rapidly,  push the REV 
> button for you.  That way you will hear VFO A in one ear and B (taking very 
> rapid turns) in the other and when you transmit, the VFO A will be your TX 
> freq. This will be a 'virtual' second RX to easily find the freq of the last 
> station worked in a DX pile up.  I use the 'REV' button extensively to do 
> that.
>   73
> Vidi - ZS1EL
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