Re: [Elecraft] Linear thoughts

[Matthew Cook]

Eric,

That's easy, #1 requirement should be spectral purity at full smoke.  So
simply take the features and functions of the KPA500 and increase output to
1500W PEP.   I'd not like to see Elecraft waste their time with an
Spurious/IMD spec that only just pass the FCC requirements, it's about time
someone showed leadership here.   At the very least I'd expect to see
Spurious emissions 60dB (or more) below PEP and IMD 30dB (or more) below
PEP across all bands, I'll admit this is not easy to do from 1.8-50MHz but
it's also not impossible.  This is the minimum commercial spec for 1kW HF
gear here in VK already, for inspiration Codan 3062 or LINEARamp Gemini.
However it's not easy especially since the FCC ties your hands behind your
backs in terms of gain from the get go.

The nice to haves (wish list) would be;

   - Four antenna output with an internal tuner that could flatten antennas
   that creep up towards 3:1 at the band edges (ala alpha 9500 series)
   - Limit the weight of the KPA1500 to the same as the KPA500 is now
   (preferably lighter) so switchmode PSU's this time please.
   - Make allowances for those countries that aren't limited to FCC 13dB
   gain, we'd be happy with just 16dB (*30-40W grin*) and let us pocket the
   IMD/Spurious improvements

If Elecraft were to make such an amp with this sort of spectral purity I'd
be inclined to complete the necessary paperwork for a high power variation
on my license here in VK and purchase an amp.  I've toyed with the Gemini
Amp a couple of times but the integration of the KPA500 eventually tipped
the balance.

Then all we've got to do is get more people pointing their beams at us
during DXpeditions and Contests and we'd be set.

73

Matthew
VK5ZM

On 18 March 2017 at 03:36, Eric Swartz - WA6HHQ, Elecraft  wrote:

> Interesting discussion.
>
> Folks, if we did introduce a 1500 W solid state amp similar to our KPA500
> in operation, what features etc would be important?
>
> 73,
> Eric
> /elecraft.com/
>
>
>
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Re: [Elecraft] DC placement

[Jack Brindle]

It depends on what you want to measure. If you want to see the match the KAT500 
gives you (should be very good when tuned), then put it between the KPA500 and 
the KAT500.
On the other hand, if you want to see what the antenna itself is showing, then 
add the sensor on the output port of the KAT500 to the antenna. Remember, the 
W2 only can have
two sensors attached, and the KAT500 can switch three antennas, so you need to 
choose how many antennas you wish to monitor and have that many (again, max of 
two)
sensors connected to the W2.

I generally like to monitor the antennas, so my W2 sensors are connected 
between the KAt500 and the antennas. I also have another sensor connected 
between the KPA500 and the KAT500,
but this one is connected to my P3 so I can view the output waveform as well as 
monitor transmitted power. This one normally shows a great SWR, although at 
times I will switch the KAT500
to bypass mode so I can take a look at the real antenna match (and appreciate 
the work of the KAT500).

Hope this helps - If you have any W2 questions I’ll try to answer them.

73,

Jack Brindle, W6FB
Elecraft Engineering


> 
> On Mar 23, 2017, at 9:21 PM, Lane  
> wrote:
> 
> I've disconnected the majority of cables from my station and wished I
> had marked a few of them before doing so. Things just don't seem right
> as I reconnect them.
> 
> Can I get some help with the Directional Coupler? There's a KAT500,
> KPA500, and W2 involved.
> 
> Per the manual ...
> "If an ATU is used, it [the KAT500] should be placed between the load
> port and the antenna."
> 
> So I'm thinking connections as follows ...
> 
> KPA(RF Output) -> DCoupler(transmitter)
> 
> DCoupler(load) -> ATU(xmtr)
> 
> ATU(ant1) -> antenna
> 
> That seems to put the ATU between the DC load port and the antenna. I
> just don't think I had it like that before though and would welcome
> 2nd opinions.
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[Elecraft] K3S USB sound issues.

[wa9fvp]

I’m having sound problems my K3S.  I don’t recall this ever happening with my
K3 but when I launch windows 7 on my PC, the K3S, USB Audio CODEC is turned
off.  It’s shown in the Volume Mixer and when I double click on the Icon, it
launches the properties for the CODEC.  I can click on the Levels tab and
set the Microphone level.  When I click on the speaker Icon, the sound is on
and I can adjust the level.

Here’s what gets weird.  After the few or even several seconds, the sound
goes off and the speaker icon shows the circle with a slash.  The microphone
level also moves to zero.  I have the volume mixer stretched halfway across
the bottom of the monitor and I noticed that other sound devices are shown. 
At least 3 or 4 pop up and they all have level controls and a speaker icon. 
If I move a slider up, it pops back down.  If I click on the speaker Icon
nothing happens.  For some reason the they hijacked all of the legitimate
record devices and turned them off.

Now this is really weird.  If I launch Task Manager, for a few seconds under
the processes tab, I can see several copies Regsvr32.exe, then they
disappear.  I can go back the K3S CODEC and turn it back on.
Everything is OK but after a few or even several minutes the Regsvr32.exe
processes are back and the sound goes off.  Several copies of the bogus
audio devices are back and if I kill Task Manager and launch it again,
Regsvr32.exe and the bogus sound devices are gone, for several minutes and
the process repeats.

I normally run Norton Internet security and do scans periodically but I
never had a virus.  My son came over and he ran Malware-bytes and several
other virus detection programs but nothing was found.  




-
Jack WA9FVP

Sent from my home-brew I5 Core PC
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[Elecraft] DC placement

[Lane]

I've disconnected the majority of cables from my station and wished I
had marked a few of them before doing so. Things just don't seem right
as I reconnect them.

Can I get some help with the Directional Coupler? There's a KAT500,
KPA500, and W2 involved.

Per the manual ...
"If an ATU is used, it [the KAT500] should be placed between the load
port and the antenna."

So I'm thinking connections as follows ...

KPA(RF Output) -> DCoupler(transmitter)

DCoupler(load) -> ATU(xmtr)

ATU(ant1) -> antenna

That seems to put the ATU between the DC load port and the antenna. I
just don't think I had it like that before though and would welcome
2nd opinions.
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Re: [Elecraft] directional coupler docs

[Lane]

Thank you. Got a hint they were in the W2 docs for assembly. For some
reason, I was looking for separate docs.

On Thu, Mar 23, 2017 at 10:42 PM, Lane
 wrote:
> Would like to know where on the website they are. Sorry if I'm missing
> an obvious location which I can't seem to find.
>
> On Thu, Mar 23, 2017 at 10:40 PM, Jack Brindle  wrote:
>> Download the manual from the Elecraft web site. It has descriptions and 
>> schematics that should help a lot.
>> Any specific details you’d like to know?
>>
>> - Jack, W6FB
>>
>>
>>> On Mar 23, 2017, at 8:34 PM, Lane  
>>> wrote:
>>>
>>> Looking for any documentation on the Directional Couplers, 1.8-54MHz
>>> 200W and 2KW sensors for the W2.
>>>
>>> If anyone can point me to a link which I am unable to find, thanks.
>>> __
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>>
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Re: [Elecraft] directional coupler docs

[Lane]

Would like to know where on the website they are. Sorry if I'm missing
an obvious location which I can't seem to find.

On Thu, Mar 23, 2017 at 10:40 PM, Jack Brindle  wrote:
> Download the manual from the Elecraft web site. It has descriptions and 
> schematics that should help a lot.
> Any specific details you’d like to know?
>
> - Jack, W6FB
>
>
>> On Mar 23, 2017, at 8:34 PM, Lane  
>> wrote:
>>
>> Looking for any documentation on the Directional Couplers, 1.8-54MHz
>> 200W and 2KW sensors for the W2.
>>
>> If anyone can point me to a link which I am unable to find, thanks.
>> __
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Re: [Elecraft] directional coupler docs

[Jack Brindle]

Download the manual from the Elecraft web site. It has descriptions and 
schematics that should help a lot.
Any specific details you’d like to know?

- Jack, W6FB


> On Mar 23, 2017, at 8:34 PM, Lane  
> wrote:
> 
> Looking for any documentation on the Directional Couplers, 1.8-54MHz
> 200W and 2KW sensors for the W2.
> 
> If anyone can point me to a link which I am unable to find, thanks.
> __
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Re: [Elecraft] [KX2] paddle always keys

[Nr4c]

Great idea. Print the manual on the radio case. Like it. You'll always have it 
handy. 

Sent from my iPhone
...nr4c. bill


> On Mar 23, 2017, at 9:23 PM, kevino z  wrote:
> 
> found it - had to tap the 1 on the numeric key when the CW WGHT menu is up. 
> Not so intuitive. Maybe a better menu entry dedicated to this could be 
> considered?
> 
> kevin
> 
> 
> 
> Sent from Outlook
> 
> 
> From: Elecraft  on behalf of kevino z 
> 
> Sent: Thursday, March 23, 2017 8:41:04 PM
> To: Elecraft@mailman.qth.net
> Subject: [Elecraft] [KX2] paddle always keys
> 
> On my KX3, when I have the onboard KXPD3 connected and am in SSB mode, the 
> paddle will not send out CW. But on my KX2, it will, regardless of mode. What 
> menu setting am I overlooking? As I accidently hit it with the mic cord, in 
> the middle of a SSB QSO and it starts sending CW...
> 
> thanks,
> Kevin (KK4YEL)
> 
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> found it - had to tap the 1 on the numeric key when the CW WGHT menu is up. 
> Not so intuitive. Maybe a better menu entry dedicated to this could be 
> considered?
> 
> kevin
> 
> 
> 
> Sent from Outlook
> 
> 
> From: Elecraft  on behalf of kevino z 
> 
> Sent: Thursday, March 23, 2017 8:41:04 PM
> To: Elecraft@mailman.qth.net
> Subject: [Elecraft] [KX2] paddle always keys
> 
> On my KX3, when I have the onboard KXPD3 connected and am in SSB mode, the 
> paddle will not send out CW. But on my KX2, it will, regardless of mode. What 
> menu setting am I overlooking? As I accidently hit it with the mic cord, in 
> the middle of a SSB QSO and it starts sending CW...
> 
> thanks,
> Kevin (KK4YEL)
> 
> __
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[Elecraft] directional coupler docs

[Lane]

Looking for any documentation on the Directional Couplers, 1.8-54MHz
200W and 2KW sensors for the W2.

If anyone can point me to a link which I am unable to find, thanks.
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[Elecraft] FS: KXV3A I/O Board

[Jeffrey Cantor]

 jacantor9@Gmail.comDr. Jeffrey A. Cantor
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Re: [Elecraft] Wanted to Buy: KXV3A

[Bill W4ZV]

A friend has made me an offer I can't refuse.  Thanks to all for the
responses.

73,  Bill  W4ZV



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[Elecraft] VLF Receivers

[James Hall via Elecraft]

The old Drake TR-7 would go down to DC.  I played with this many times and it 
would pick up as low as 60 Hz.
AA8Y
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Re: [Elecraft] [KX2] paddle always keys

[kevino z]

found it - had to tap the 1 on the numeric key when the CW WGHT menu is up. Not 
so intuitive. Maybe a better menu entry dedicated to this could be considered?

kevin



Sent from Outlook


From: Elecraft  on behalf of kevino z 

Sent: Thursday, March 23, 2017 8:41:04 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] [KX2] paddle always keys

On my KX3, when I have the onboard KXPD3 connected and am in SSB mode, the 
paddle will not send out CW. But on my KX2, it will, regardless of mode. What 
menu setting am I overlooking? As I accidently hit it with the mic cord, in the 
middle of a SSB QSO and it starts sending CW...

thanks,
Kevin (KK4YEL)

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[Elecraft] Mike Re: Elecraft KPA-1500

[Dick via Elecraft]

Mike,
 
About 10 days ago, Eric from Elecraft posted a message on the Elecraft  
Forum asking for people "to submit a list of features we would like on a  
KPA-1500".   It's time to submit a list! 
 
73,
Dick- K9OM
 
 
In a message dated 3/23/2017 8:01:26 P.M. Eastern Daylight Time,  
elecraft-requ...@mailman.qth.net writes:

Message:  26
Date: Thu, 23 Mar 2017 17:31:50 -0600
From: W0MU Mike Fatchett  
To: elecraft@mailman.qth.net
Subject: Re:  [Elecraft] KPA-1500 features
Message-ID:  <96fb74cc-acc8-688d-38e4-98ec78386...@w0mu.com>
Content-Type:  text/plain; charset=windows-1252; format=flowed

Is Elecraft seriously  considering a KPA-1500 or KPA-2K?


On 3/20/2017 12:53 PM, Clay  Autery wrote:
> Yes...  to everything Dick said.
>
>  __
> Clay Autery, KY5G
>
> On 3/20/2017  11:49 AM, Dick via Elecraft wrote:
>>   
>> I'd  like to see the KPA-1500 use dual 1kw LDMOS transistors as  they  
are
>> relatively inexpensive and can handle high reflected   power.  An 
antenna tuner
>> shouldn't be needed unless  the  SWR exceeds 3 to 1.  I'd like the 
KPA-1500
>> designed  for  2kw so it will easily make 1,500 watts in "run" mode all
>> weekend  long on all modes, including RTTY.  Too many of today's "legal  
 power
>> amps" often won't make legal power.  A quiet Amp  is  important, use 4" 
or
>> larger cooling fans and  not  tiny 2" fans like many solid-state amps 
use as
>> they often need to  run at warp speed and then make a tremendous  amount 
of
>>  noise.  I'd like two radio inputs and six antenna  outputs, and to  be 
able to
>> adjust the brightness of all front panel  light  from bright to very 
dim.  The
>> KAT-500 front panel   lights cannot be turned down low enough for me.  
The
>> KPA-500  is  small and excellent for DXpeditions, build the KPA-1500 as  
a
>> robust  legal limit amp with large heat sinks that will run  cool, 
operate
>> quietly, and easily make 1,500 watts on all bands  160-6m and I'll  be 
sure to buy
>> one.
>>
>> 73,
>> Dick-  K9OM

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[Elecraft] [KX2] paddle always keys

[kevino z]

On my KX3, when I have the onboard KXPD3 connected and am in SSB mode, the 
paddle will not send out CW. But on my KX2, it will, regardless of mode. What 
menu setting am I overlooking? As I accidently hit it with the mic cord, in the 
middle of a SSB QSO and it starts sending CW...

thanks,
Kevin (KK4YEL)

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Re: [Elecraft] K3S ELF 10KHz

[Fred Jensen]

NLK[?] at Jim Creek used to transmit on 24.8 KHz with a megawatt or a 
little more.  I don't know if it is still active.  The antenna is [was] 
a linear series of vertical elements down a valley, suspended by cables 
from the mountains on each side.  I believe there were ten total, fed in 
two groups of 5 from two transmission lines on the valley floor.  The 
suspension cables provided capacitive top loading, most of the radiation 
came from the vertical elements.  Similar to the antenna at SAQ.


Not much to listen to, it was [or still is] extreme QRSS.  Just a 
handful of characters, often only one or two.


The Omega system operated down in the 10-15 KHz range.  The NA station 
was in one of the Dakotas, but it's been decommissioned for several 
decades.  It wasn't much to listen to either.  WWVL was on 20 KHz for 
awhile, gone now, and not much to listen to when it was on.  I've 
"heard" WWVB on 60 KHz, pretty dull.


At frequencies below 20 KHz, you don't need tubes or transistors, just a 
generator with a lot of poles and high RPM.  Before LORAN-C on 100 KHz 
died, at least one of the stations was outfitted with an Accufix 
transmitter from Megapulse Corp.  This was a late 20th Century 
re-incarnation of the spark gap TX ... SCR's for the spark gap, huge 
capacitor banks, around a megawatt, and precise timing from a room full 
of electronics.  What goes around sometimes comes around.


73,

Fred ("Skip") K6DGW
Sparks NV USA
Washoe County DM09dn

On 3/23/2017 3:45 PM, Ron D'Eau Claire wrote:

The Jim Creek antenna facility is amazing - a series of over mile long wires
(cables) for the radiator strung from mountain to mountain across a valley
being fed with IIRC a megawatt of VLF RF.

73, Ron AC7AC



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Re: [Elecraft] KX2 on N1MM+

[Chris Tate - N6WM]

No problem Linas!  Glad it worked out.  Catch you down the log and enjoy the 
coolest little rig out there!

73
Chris
N6WM

From: Irma & Linas(LY2H) [mailto:irmalina...@gmail.com]
Sent: Thursday, March 23, 2017 6:20 AM
To: Chris Tate - N6WM ; Elecraft@mailman.qth.net
Subject: Re: [Elecraft] KX2 on N1MM+

Chris,
Thanks a lot for your advice and the link to a great K4MTX site!  Problem 
solved now! Understanding the principals of this scrip writing I can create my 
own macros as I want them to, the CW comes smoothly to the KX2 and is 
transmitted to the air provided the VOX button is on. The only change- the ESC 
button doesn't work any more for stopping the TX but the F11 takes the job over!

I recommend this method  to all KX2 owners, thanks to this very knowledgable 
Elecrafters community!

73 de Linas LY2H

On 2017 kov. 23, kt at 03:01 Chris Tate - N6WM 
> wrote:
Yes
Try these-- credit to K4MTX these work on the KX2 as well.
https://k4mtx.wordpress.com/2013/06/02/kx3-how-to-configure-n1mm-to-use-function-keys-to-send-cw-without-additional-cables-or-hardware-like-winkeyer/

F1 Cq,{CATA1ASC KY cqtest * *;}
F2 Snt,{CATA1ASC KY 5nn # #;}
F3 Tu,{CATA1ASC KY tu;}
F4 {MYCALL},{CATA1ASC KY *;}
F5 His Call,{CATA1ASC KY {call} ;}
F6 Repeat, {CATA1ASC KY # #;}
F7 Exch, {CATA1ASC KY #;}
F8 Agn?,{CATA1ASC KY agn? ;}
F9 Nr?,{CATA1ASC KY nr? ;}
F10 Call?,{CATA1ASC KY cl? ;}
F11 Break,{CATA1ASC RX;}
F12 Wipe,{WIPE}


-Original Message-
From: Elecraft 
[mailto:elecraft-boun...@mailman.qth.net]
 On Behalf Of Irma & Linas(LY2H)
Sent: Wednesday, March 22, 2017 5:08 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] KX2 on N1MM+

Hello group,

Is it correct that KX2 does not support the CW/PTT operation through the 
DTR/RTS ports? I have tried it out on the N1MM+ logger with no success. It does 
control the VFO, the band/mode change but no sending CW from the logger nor 
switchin PTT. My K3 which has the menu item for the DTR/RTS configuration is 
doing it all perfectly under the same logger configuration.
Is there any other way to get CW/PTT control on KX2 from the N1MM+ logger?
Thanks for the inputs!

73 Linas LY2H
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Re: [Elecraft] K3S ELF 10KHz

[AJ8MH-Radio.Joe.Hutchens]

We had an ELF transmitter site here in the U.P. of Michigan.  Some 
pictures and notes about the old location are on my cabin site.


http://webpages.charter.net/aj8mh-radio/mich1.html

73,
Joe ( AJ8MH-Radio )

On 3/23/2017 6:55 PM, Mel Farrer via Elecraft wrote:

Doug,
Didn't the Navy use those frequencies to communicate with the submarines?  I 
remember something about 30 KHz and an Atlantic Island and something Washington 
with a setup???
Long in the tooth ham!
Mel K6KBE




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Re: [Elecraft] KPA-1500 features

[Fred Jensen]

Eric asked for input on features/characteristics/specifications desired 
"if" Elecraft were to embark on such a project.  He's gotten a lot of 
input.  There were a couple of prototypes knocking around at selected 
hamfests several years ago.  Nothing came of them.  There's obviously no 
technical/engineering reason that would prevent Elecraft from fielding 
something of this nature on the market.  The real issue is ... would it 
be profitable.  Sadly, the math to answer that question is far more 
complex than designing it. [:-)


73,

Fred ("Skip") K6DGW
Sparks NV USA
Washoe County DM09dn

On 3/23/2017 4:31 PM, W0MU Mike Fatchett wrote:

Is Elecraft seriously considering a KPA-1500 or KPA-2K?




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Re: [Elecraft] K3S ELF 10KHz

[Walter Underwood]

But “audio” could be shorthand for “audio frequencies” instead of “radio 
frequencies”. 10 kHz is a reasonable frequency for AF. I’m quite sure that my 
audio amplifiers do not amplify with compression waves.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Mar 23, 2017, at 3:56 PM, Jim Brown  wrote:
> 
> Right. What is being transmitted is an electromagnetic field, NOT a sound 
> field. Sound is AIR (or water) vibrating. Sound waves travel a bit faster 
> than a foot per msec. Sonar uses sound. The system Mike is talking about is 
> radio.
> 
> Radio is an electromagnetic field, which the simultaneous existence of an 
> electric field and a magnetic field at right angles to each other, and they 
> move through space at the speed of light. We can't hear radio waves, but we 
> could hear high frequency sound waves if the radio waves were somehow 
> detected (the trusty non-linear junction) and caused something to vibrate (or 
> even to arc).
> 
> 73, Jim K9YC
> 
> On Thu,3/23/2017 3:03 PM, Mike Morrow wrote:
>> I didn't understand the reference to audio either.
>> 
>> When I on the crew of a US ballistic missile submarine more than 40 years 
>> ago, our main communications receivers were AN/BRR-3 units whose full 
>> frequency range was only 14 to 30 kHz.  These received signals from coastal 
>> stations operating at megawatt output levels, but there was no one near such 
>> a station with his ear drums damaged by or even sensitive to the station's 
>> continuous output.:-)
>> 
>> Anyone can listen to such signals as they exist today.
> 
> 
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Re: [Elecraft] KPA-1500 features

[W0MU Mike Fatchett]

Is Elecraft seriously considering a KPA-1500 or KPA-2K?


On 3/20/2017 12:53 PM, Clay Autery wrote:

Yes...  to everything Dick said.

__
Clay Autery, KY5G

On 3/20/2017 11:49 AM, Dick via Elecraft wrote:
  
I'd like to see the KPA-1500 use dual 1kw LDMOS transistors as  they are

relatively inexpensive and can handle high reflected  power.  An antenna tuner
shouldn't be needed unless  the SWR exceeds 3 to 1.  I'd like the KPA-1500
designed  for 2kw so it will easily make 1,500 watts in "run" mode all
weekend long on all modes, including RTTY.  Too many of today's "legal  power
amps" often won't make legal power.  A quiet Amp is  important, use 4" or
larger cooling fans and  not tiny 2" fans like many solid-state amps use as
they often need to run at warp speed and then make a tremendous  amount of
noise.  I'd like two radio inputs and six antenna  outputs, and to be able to
adjust the brightness of all front panel  light from bright to very dim.  The
KAT-500 front panel  lights cannot be turned down low enough for me.  The
KPA-500 is  small and excellent for DXpeditions, build the KPA-1500 as a
robust  legal limit amp with large heat sinks that will run cool, operate
quietly, and easily make 1,500 watts on all bands 160-6m and I'll  be sure to 
buy
one.
  
73,

Dick- K9OM

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Re: [Elecraft] K3S ELF 10KHz

[wa9fvp]

In the 80's using my Icom R71 receiver and a Burhans VLF converter, I copied
the Omega Navigation system operating in the 10 to 12 KHz range.  
https://en.m.wikipedia.org/wiki/Omega_(navigation_system)



-
Jack WA9FVP

Sent from my home-brew I5 Core PC
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Re: [Elecraft] K3S ELF 10KHz

[Harry Yingst via Elecraft]

Years ago I had an Selective voltmeter and an signal generator

I was surprised that the selective voltmeter could hear the signal generator 
across the room at what one would consider audio ranges.





  From: Doug Smith 
 To: Mel Farrer  
Cc: Elecraft Reflector 
 Sent: Thursday, March 23, 2017 7:15 PM
 Subject: Re: [Elecraft] K3S ELF 10KHz
   
Yup.  Earlier in the thread Mike / KK5F pointed that out.  He was on the RX end 
of the circuit.

We monitored stations from Perth, somewhere in the UK, east coast of USA, west 
coast of USA, etc. etc.  Must have been six or eight stations on the air.  We 
also monitored WWVB but I think that was the highest frequency (60 kHz) we 
cared about.

It was all RTTY as I recall.  We didn’t bother trying to decode the stuff — it 
was encrypted and we didn’t care about the content.  We only cared about signal 
strength.  Fun times; long time ago..

-Doug, W7KF


> On Mar 23, 2017, at 4:55 PM, Mel Farrer  wrote:
> 
> Doug,
> 
> Didn't the Navy use those frequencies to communicate with the submarines?  I 
> remember something about 30 KHz and an Atlantic Island and something 
> Washington with a setup???
> 
> Long in the tooth ham!
> 
> Mel K6KBE

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Re: [Elecraft] K3S ELF 10KHz

[Doug Smith]

Yup.  Earlier in the thread Mike / KK5F pointed that out.  He was on the RX end 
of the circuit.

We monitored stations from Perth, somewhere in the UK, east coast of USA, west 
coast of USA, etc. etc.  Must have been six or eight stations on the air.  We 
also monitored WWVB but I think that was the highest frequency (60 kHz) we 
cared about.

It was all RTTY as I recall.  We didn’t bother trying to decode the stuff — it 
was encrypted and we didn’t care about the content.  We only cared about signal 
strength.  Fun times; long time ago..

-Doug, W7KF


> On Mar 23, 2017, at 4:55 PM, Mel Farrer  wrote:
> 
> Doug,
> 
> Didn't the Navy use those frequencies to communicate with the submarines?  I 
> remember something about 30 KHz and an Atlantic Island and something 
> Washington with a setup???
> 
> Long in the tooth ham!
> 
> Mel K6KBE

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Re: [Elecraft] K3S not-ELF, VLF 10KHz

[Mike Morrow]

> Used to listen to 16 khz from GBR in England on an RAL...

That should be the VLF/LF/MF RAK (15 TO 600 KHz), not the RAL, which was the 
MF/HF companion receiver (300 to 23000 kHz).  These 80-year-old-design 
TRF/Regenerative units were outstanding receivers during their era as the US 
Navy's principal shipboard set before and during WWII.  The RAL still does well 
today on HF, especially for CW.

  http://www.virhistory.com/navy/rcvrs/rak-ral.htm

This whole thread was mis-named.  The specified frequency of 10 kHz is far far 
far from ELF.  Tbat is merely a Very Low Frequency VLF, 3 to 30 kHz.

Ultra Low Frequency ULF is 0.3 to 3 kHz.
Super Low Frequency SLF is 30 to 300 Hz.
Extremely Low Frequency ELF is 3 to 30 Hz.

I doubt that there is a firmware mod that could make the K3S work at ELF, 
either going in or coming out!  :-)

Mike / KK5F
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Re: [Elecraft] K3S ELF 10KHz

[Jim Brown]

Right. What is being transmitted is an electromagnetic field, NOT a 
sound field. Sound is AIR (or water) vibrating. Sound waves travel a bit 
faster than a foot per msec. Sonar uses sound. The system Mike is 
talking about is radio.


Radio is an electromagnetic field, which the simultaneous existence of 
an electric field and a magnetic field at right angles to each other, 
and they move through space at the speed of light. We can't hear radio 
waves, but we could hear high frequency sound waves if the radio waves 
were somehow detected (the trusty non-linear junction) and caused 
something to vibrate (or even to arc).


73, Jim K9YC

On Thu,3/23/2017 3:03 PM, Mike Morrow wrote:

I didn't understand the reference to audio either.

When I on the crew of a US ballistic missile submarine more than 40 years ago, 
our main communications receivers were AN/BRR-3 units whose full frequency 
range was only 14 to 30 kHz.  These received signals from coastal stations 
operating at megawatt output levels, but there was no one near such a station 
with his ear drums damaged by or even sensitive to the station's continuous 
output.:-)

Anyone can listen to such signals as they exist today.



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Re: [Elecraft] K3S ELF 10KHz

[Mel Farrer via Elecraft]

Doug,
Didn't the Navy use those frequencies to communicate with the submarines?  I 
remember something about 30 KHz and an Atlantic Island and something Washington 
with a setup???
Long in the tooth ham!
Mel K6KBE

  From: Doug Smith 
 To: Elecraft Reflector  
 Sent: Thursday, March 23, 2017 3:45 PM
 Subject: Re: [Elecraft] K3S ELF 10KHz
   
Way back in ancient times I worked at a research lab where we had a LOT of 
receivers tuned to all the signals we could find below 60 kHz.  I think the 
lowest was 13.x.  There was an 18.x and 24.x etc. etc.  We were only interested 
in signal strengths and plotted each signal on strip chart recorders, 24x7.  It 
was very interesting working at those frequencies.  (This was all part of a 
solar observatory project.)

So, I guess *that* would qualify as a reason to listen to this stuff..

73,
Doug, W7KF
http://www.w7kf.com 



> On Mar 23, 2017, at 4:03 PM, Mike Morrow  wrote:
> 
>  I'm not sure what the point would be...everything down there is very deeply 
>encrypted.

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Re: [Elecraft] K3S ELF 10KHz

[Doug Smith]

Yeah, I think they’re on 18.6 kHz — unless, of course, they managed to buy a 
VFO in the last 40 years!

Doug, W7KF


> On Mar 23, 2017, at 4:45 PM, Ron D'Eau Claire  wrote:
> 
> The Jim Creek antenna facility is amazing - a series of over mile long wires
> (cables) for the radiator strung from mountain to mountain across a valley
> being fed with IIRC a megawatt of VLF RF. 
> 
> 73, Ron AC7AC

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Re: [Elecraft] K3S ELF 10KHz

[Ron D'Eau Claire]

The Jim Creek antenna facility is amazing - a series of over mile long wires
(cables) for the radiator strung from mountain to mountain across a valley
being fed with IIRC a megawatt of VLF RF. 

73, Ron AC7AC

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike
Morrow
Sent: Thursday, March 23, 2017 3:04 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3S ELF 10KHz

I didn't understand the reference to audio either.

When I on the crew of a US ballistic missile submarine more than 40 years
ago, our main communications receivers were AN/BRR-3 units whose full
frequency range was only 14 to 30 kHz.  These received signals from coastal
stations operating at megawatt output levels, but there was no one near such
a station with his ear drums damaged by or even sensitive to the station's
continuous output.  :-)

Anyone can listen to such signals as they exist today.  I'm not sure what
the point would be...everything down there is very deeply encrypted.

Mike / KK5F

--

>> Wait a second, there's a big difference between a sound pressure wave 
>> and an electromagnetic wave at 10-kHz...

---

> Receivers THAT I AM AWARE OF begin coverage at 15 khz.  Used to listen 
> to
> 16 khz from GBR in England on an RAL when lived in Florida.
>
> After all, 10 khz -is- audio.
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Re: [Elecraft] K3S ELF 10KHz

[Doug Smith]

Way back in ancient times I worked at a research lab where we had a LOT of 
receivers tuned to all the signals we could find below 60 kHz.  I think the 
lowest was 13.x.  There was an 18.x and 24.x etc. etc.  We were only interested 
in signal strengths and plotted each signal on strip chart recorders, 24x7.  It 
was very interesting working at those frequencies.  (This was all part of a 
solar observatory project.)

So, I guess *that* would qualify as a reason to listen to this stuff..

73,
Doug, W7KF
http://www.w7kf.com 



> On Mar 23, 2017, at 4:03 PM, Mike Morrow  wrote:
> 
>  I'm not sure what the point would be...everything down there is very deeply 
> encrypted.

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Re: [Elecraft] K3S ELF 10KHz

[Mike Morrow]

I didn't understand the reference to audio either.

When I on the crew of a US ballistic missile submarine more than 40 years ago, 
our main communications receivers were AN/BRR-3 units whose full frequency 
range was only 14 to 30 kHz.  These received signals from coastal stations 
operating at megawatt output levels, but there was no one near such a station 
with his ear drums damaged by or even sensitive to the station's continuous 
output.  :-)

Anyone can listen to such signals as they exist today.  I'm not sure what the 
point would be...everything down there is very deeply encrypted.

Mike / KK5F

--

>> Wait a second, there's a big difference between a sound pressure wave
>> and an electromagnetic wave at 10-kHz...

---

> Receivers THAT I AM AWARE OF begin coverage at 15 khz.  Used to listen to
> 16 khz from GBR in England on an RAL when lived in Florida.
>
> After all, 10 khz -is- audio.
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[Elecraft] Wanted to Buy: KXV3A

[Bill W4ZV]

Does anyone have an unused KXV3A after upgrading to KXV3B?  Please email
direct to 93bmwm5 at gmail.com.

73,  Bill  W4ZV



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Re: [Elecraft] K3S ELF 10KHz

[Ron D'Eau Claire]

Absolutely. You would need an antenna connected to an audio transducer (speaker 
or 'phones) to hear it. (Perhaps one would call it a non-conversion receiver.) 

An audio amplifier helps, but you have to deal with the 120 Hz buzz caused by 
the 60 Hz power line fields all around. A high pass filter with a cutoff above 
150 Hz helps a great deal. 

Listening to the variety of squeaks, chirps and other noises produced by 
electronic discharges all over the planet is a fascinating hobby in itself. 
They are commonly referred to as 'Sferics, short for atmospherics. 

73 Ron AC7AC

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of thelastdb
Sent: Thursday, March 23, 2017 6:57 AM
To: Ken G Kopp; wa9fvp; elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3S ELF 10KHz

Wait a second, there's a big difference between a sound pressure wave and an 
electromagnetic wave at 10-kHz...

Myron WVØHPrinted on Recycled Data  Original message From: Ken 
G Kopp  Date: 3/23/2017  7:41 AM  (GMT-07:00) To: wa9fvp 
, elecraft@mailman.qth.net Subject: Re: [Elecraft] K3S 
ELF 10KHz Receivers THAT I AM AWARE OF begin coverage at 15 khz.  Used to 
listen to
16 khz from GBR in England on an RAL when lived in Florida.

After all, 10 khz -is- audio.

73

K0PP

On Mar 22, 2017 22:22, "wa9fvp"  wrote:

> Is it possible, maybe in the next firmware rev, to extend the bottom 
> end of the K3S down to 10KHz?
>
>
>
> -
> Jack WA9FVP
>
> Sent from my home-brew I5 Core PC
> --
> View this message in context: http://elecraft.365791.n2.
> nabble.com/K3S-and-VLF-tp7628247p7628423.html
> Sent from the Elecraft mailing list archive at Nabble.com.
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[Elecraft] Elecraft K3S Raffle Results!

[Alan Sewell N5NA]

I apologize for the delay in posting the results of the Midland Amateur 
Radio Club Elecraft K3S raffle.  The drawing was held on Saturday, March 
18, at the Midland St. Patrick's Day Hamfest.


The winner of the K3S was Lonnie Yee, KE5MLP.  Congratulations Lonnie!

Thank you to everyone who participated!  All 300 tickets were purchased 
by 132 individuals.  Anywhere from one to twenty tickets were purchased 
by each individual.  Lonnie, the winner, purchased ten tickets.


73, Alan N5NA


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Re: [Elecraft] K2 main encoder wanted

[Don Wilhelm]

That is the reason Elecraft changed to the new encoders - unobtainium!

73,
Don W3FPR

On 3/23/2017 3:16 PM, Doug Person wrote:

Note that DigiKey no longer carries the encoders mentioned in this
article. Neither could I even find the manufacturer listed in their
directory of manufacturers. I also could not find anyone who carries
them with a Google search.  Perhaps others will have better luck.

Doug -- K0DXV


On 3/22/2017 6:26 PM, Harry Yingst via Elecraft wrote:

  Here is some info
http://www.wm5r.org/k2-100/encoders.shtml


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Re: [Elecraft] K2 main encoder wanted

[Doug Person]

Note that DigiKey no longer carries the encoders mentioned in this 
article. Neither could I even find the manufacturer listed in their 
directory of manufacturers. I also could not find anyone who carries 
them with a Google search.  Perhaps others will have better luck.


Doug -- K0DXV


On 3/22/2017 6:26 PM, Harry Yingst via Elecraft wrote:

  Here is some info
http://www.wm5r.org/k2-100/encoders.shtml




   From: Bob G3PJT 
  To: "elecraft@mailman.qth.net" 
  Sent: Wednesday, March 22, 2017 6:06 PM
  Subject: [Elecraft] K2 main encoder wanted

Hi


I need a main tuning encoder of a K2. The Elecraft part number is
E640003 and on the back the makers number is EC202C025A-2TD

If you have one spare please mail me off list

73 and thanks

Bob G3PJT

b...@g3pjt.com

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Re: [Elecraft] Lido Mount for the KX3

[KD6QZX]

Great long awaited news!!! I now have the KX3 and PX3 mounts! 
KX3 Mount – Side KX

 

On Tuesday, January 27, 2015 5:09 PM, "Joshua Gould, K8WXA [via Elecraft]" 
 wrote:
 

  Has anyone used the Lido Mount for the KX3?  I was curious to know if they
had anything that I could adapt to fit the KX3 and low and behold, there
was already one there...

Here's a link if you don't know what I'm talking about:
http://www.lidomounts.com/kx3mount.html

73,
Joshua Gould
K8WXA
EM89pn
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unsubscribe from Elecraft, click here.
 NAML 

   



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[Elecraft] WTB: K-Pod

[Mike VE3YF]

Hi:

Does anyone have a K-Pod in Excellent cosmetic and electrical condition 
that they are willing to part with. Tnx.

--

*73 De Mike*
*VE3YF

_/http://www.ve3yf.com/_*

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Re: [Elecraft] K3S ELF 10KHz

[thelastdb]

Wait a second, there's a big difference between a sound pressure wave and an 
electromagnetic wave at 10-kHz...

Myron WVØHPrinted on Recycled Data  Original message From: Ken 
G Kopp  Date: 3/23/2017  7:41 AM  (GMT-07:00) To: wa9fvp 
, elecraft@mailman.qth.net Subject: Re: [Elecraft] K3S 
ELF 10KHz 
Receivers THAT I AM AWARE OF begin coverage at 15 khz.  Used to listen to
16 khz from GBR in England on an RAL when lived in Florida.

After all, 10 khz -is- audio.

73

K0PP

On Mar 22, 2017 22:22, "wa9fvp"  wrote:

> Is it possible, maybe in the next firmware rev, to extend the bottom end of
> the K3S down to 10KHz?
>
>
>
> -
> Jack WA9FVP
>
> Sent from my home-brew I5 Core PC
> --
> View this message in context: http://elecraft.365791.n2.
> nabble.com/K3S-and-VLF-tp7628247p7628423.html
> Sent from the Elecraft mailing list archive at Nabble.com.
> __
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Re: [Elecraft] K3S ELF 10KHz

[Ken G Kopp]

Receivers THAT I AM AWARE OF begin coverage at 15 khz.  Used to listen to
16 khz from GBR in England on an RAL when lived in Florida.

After all, 10 khz -is- audio.

73

K0PP

On Mar 22, 2017 22:22, "wa9fvp"  wrote:

> Is it possible, maybe in the next firmware rev, to extend the bottom end of
> the K3S down to 10KHz?
>
>
>
> -
> Jack WA9FVP
>
> Sent from my home-brew I5 Core PC
> --
> View this message in context: http://elecraft.365791.n2.
> nabble.com/K3S-and-VLF-tp7628247p7628423.html
> Sent from the Elecraft mailing list archive at Nabble.com.
> __
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Re: [Elecraft] K2 main encoder wanted

[Harry Yingst via Elecraft]

I really haven't looked at the encoder format they are using but if you can 
figure it out than you may find an alternate encoder.
The Elecraft one may be pricey because it's a 100 (25 I believe in reality) 
pulse per rev  but there are a number of them that are 34,64, etc that can 
typically be had for much less.


  From: Bob G3PJT 
 To: Vic Rosenthal 4X6GP ; Elecraft Reflector 
 
 Sent: Thursday, March 23, 2017 6:02 AM
 Subject: Re: [Elecraft] K2 main encoder wanted
   
Yes the shaft is very slightly bent

73 Bob G3PJT


On 23/03/2017 09:51, Vic Rosenthal 4X6GP wrote:
> Are you certain that a bit of fiber from the felt washer hasn't worked 
> its way between the shaft and the bushing? That is a known problem.
> 73,
> Vic, 4X6GP
> Rehovot, Israel
> Formerly K2VCO
> http://www.qsl.net/k2vco/
> On 23 Mar 2017 11:41, Bob G3PJT wrote:
>> Hi Don
>>
>> Thanks for the reply. I did know about the new encoder kit but the 
>> problem is that of its cost when it gets here.
>>
>> Elecraft quote 124USD for the kit, that's £100 here which then gets 
>> VAT at 20% and a local handling charge - say a total of £130-140 and 
>> as well if I read things correctly I will need to get a new knob.
>>
>> So you can see that my problem is that unless I can get a cheaper 
>> replacement I might as well sell the K2/100 either in bits for spares 
>> or at a discount.
>>
>> The encoder does work fine but it has suffered a knock which has made 
>> it slightly stiff to turn, i.e it wont 'spin', but it is useable.
>>
>> So thanks for the thoughts
>>
>> 73 Bob G3PJT
>>
>>
>>
>>
>

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Re: [Elecraft] K3S ELF 10KHz

[Harry Yingst via Elecraft]

I would love to see this but last I asked I was told No





  From: wa9fvp 
 To: elecraft@mailman.qth.net 
 Sent: Thursday, March 23, 2017 12:25 AM
 Subject: [Elecraft] K3S ELF 10KHz
   
Is it possible, maybe in the next firmware rev, to extend the bottom end of
the K3S down to 10KHz?



-
Jack WA9FVP

Sent from my home-brew I5 Core PC
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Re: [Elecraft] K2 main encoder wanted

[Bob G3PJT]

Thanks Guy 
I am going to get the encoder out from the front panel and then see what I can 
do to improve things.
73 Bob


Sent by Ipad


> On 23 Mar 2017, at 11:52, Guy Olinger K2AV  wrote:
> 
> If you can see the bend, very slightly file the "off" side of the shaft and 
> use aluminum foil to shim the other side of the shaft at the end. This may 
> relieve the drag. 
> 
> 73, Guy K2AV 
> 
>> On Thu, Mar 23, 2017 at 6:00 AM Bob G3PJT  wrote:
>> Yes the shaft is very slightly bent
>> 
>> 73 Bob G3PJT
>> 
>> 
>> On 23/03/2017 09:51, Vic Rosenthal 4X6GP wrote:
>> > Are you certain that a bit of fiber from the felt washer hasn't worked
>> > its way between the shaft and the bushing? That is a known problem.
>> > 73,
>> > Vic, 4X6GP
>> > Rehovot, Israel
>> > Formerly K2VCO
>> > http://www.qsl.net/k2vco/
>> > On 23 Mar 2017 11:41, Bob G3PJT wrote:
>> >> Hi Don
>> >>
>> >> Thanks for the reply. I did know about the new encoder kit but the
>> >> problem is that of its cost when it gets here.
>> >>
>> >> Elecraft quote 124USD for the kit, that's £100 here which then gets
>> >> VAT at 20% and a local handling charge - say a total of £130-140 and
>> >> as well if I read things correctly I will need to get a new knob.
>> >>
>> >> So you can see that my problem is that unless I can get a cheaper
>> >> replacement I might as well sell the K2/100 either in bits for spares
>> >> or at a discount.
>> >>
>> >> The encoder does work fine but it has suffered a knock which has made
>> >> it slightly stiff to turn, i.e it wont 'spin', but it is useable.
>> >>
>> >> So thanks for the thoughts
>> >>
>> >> 73 Bob G3PJT
>> >>
>> >>
>> >>
>> >>
>> >
>> 
>> __
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> 
> -- 
> Sent via Gmail Mobile on my iPhone
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Re: [Elecraft] KX2 on N1MM+

[Irma & Linas(LY2H)]

Chris,
Thanks a lot for your advice and the link to a great K4MTX site!  Problem
solved now! Understanding the principals of this scrip writing I can create
my own macros as I want them to, the CW comes smoothly to the KX2 and is
transmitted to the air provided the VOX button is on. The only change- the
ESC button doesn't work any more for stopping the TX but the F11 takes the
job over!

I recommend this method  to all KX2 owners, thanks to this very
knowledgable Elecrafters community!

73 de Linas LY2H

On 2017 kov. 23, kt at 03:01 Chris Tate - N6WM  wrote:

> Yes
> Try these-- credit to K4MTX these work on the KX2 as well.
>
> https://k4mtx.wordpress.com/2013/06/02/kx3-how-to-configure-n1mm-to-use-function-keys-to-send-cw-without-additional-cables-or-hardware-like-winkeyer/
>
> F1 Cq,{CATA1ASC KY cqtest * *;}
> F2 Snt,{CATA1ASC KY 5nn # #;}
> F3 Tu,{CATA1ASC KY tu;}
> F4 {MYCALL},{CATA1ASC KY *;}
> F5 His Call,{CATA1ASC KY {call} ;}
> F6 Repeat, {CATA1ASC KY # #;}
> F7 Exch, {CATA1ASC KY #;}
> F8 Agn?,{CATA1ASC KY agn? ;}
> F9 Nr?,{CATA1ASC KY nr? ;}
> F10 Call?,{CATA1ASC KY cl? ;}
> F11 Break,{CATA1ASC RX;}
> F12 Wipe,{WIPE}
>
>
> -Original Message-
> From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
> Irma & Linas(LY2H)
> Sent: Wednesday, March 22, 2017 5:08 PM
> To: Elecraft@mailman.qth.net
> Subject: [Elecraft] KX2 on N1MM+
>
> Hello group,
>
> Is it correct that KX2 does not support the CW/PTT operation through the
> DTR/RTS ports? I have tried it out on the N1MM+ logger with no success. It
> does control the VFO, the band/mode change but no sending CW from the
> logger nor switchin PTT. My K3 which has the menu item for the DTR/RTS
> configuration is doing it all perfectly under the same logger configuration.
> Is there any other way to get CW/PTT control on KX2 from the N1MM+ logger?
> Thanks for the inputs!
>
> 73 Linas LY2H
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Re: [Elecraft] K3S ELF 10KHz

[C G]

+1

Christian F1GWR

Le 23 mars 2017 à 05:21, wa9fvp  a écrit :

> Is it possible, maybe in the next firmware rev, to extend the bottom end of
> the K3S down to 10KHz?
> 
> 
> 
> -
> Jack WA9FVP
> 
> Sent from my home-brew I5 Core PC
> --
> View this message in context: 
> http://elecraft.365791.n2.nabble.com/K3S-and-VLF-tp7628247p7628423.html
> Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] K2 main encoder wanted

[Guy Olinger K2AV]

If you can see the bend, very slightly file the "off" side of the shaft and
use aluminum foil to shim the other side of the shaft at the end. This may
relieve the drag.

73, Guy K2AV

On Thu, Mar 23, 2017 at 6:00 AM Bob G3PJT  wrote:

> Yes the shaft is very slightly bent
>
> 73 Bob G3PJT
>
>
> On 23/03/2017 09:51, Vic Rosenthal 4X6GP wrote:
> > Are you certain that a bit of fiber from the felt washer hasn't worked
> > its way between the shaft and the bushing? That is a known problem.
> > 73,
> > Vic, 4X6GP
> > Rehovot, Israel
> > Formerly K2VCO
> > http://www.qsl.net/k2vco/
> > On 23 Mar 2017 11:41, Bob G3PJT wrote:
> >> Hi Don
> >>
> >> Thanks for the reply. I did know about the new encoder kit but the
> >> problem is that of its cost when it gets here.
> >>
> >> Elecraft quote 124USD for the kit, that's £100 here which then gets
> >> VAT at 20% and a local handling charge - say a total of £130-140 and
> >> as well if I read things correctly I will need to get a new knob.
> >>
> >> So you can see that my problem is that unless I can get a cheaper
> >> replacement I might as well sell the K2/100 either in bits for spares
> >> or at a discount.
> >>
> >> The encoder does work fine but it has suffered a knock which has made
> >> it slightly stiff to turn, i.e it wont 'spin', but it is useable.
> >>
> >> So thanks for the thoughts
> >>
> >> 73 Bob G3PJT
> >>
> >>
> >>
> >>
> >
>
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Re: [Elecraft] K2 main encoder wanted

[Bob G3PJT]

Yes the shaft is very slightly bent

73 Bob G3PJT


On 23/03/2017 09:51, Vic Rosenthal 4X6GP wrote:
Are you certain that a bit of fiber from the felt washer hasn't worked 
its way between the shaft and the bushing? That is a known problem.

73,
Vic, 4X6GP
Rehovot, Israel
Formerly K2VCO
http://www.qsl.net/k2vco/
On 23 Mar 2017 11:41, Bob G3PJT wrote:

Hi Don

Thanks for the reply. I did know about the new encoder kit but the 
problem is that of its cost when it gets here.


Elecraft quote 124USD for the kit, that's £100 here which then gets 
VAT at 20% and a local handling charge - say a total of £130-140 and 
as well if I read things correctly I will need to get a new knob.


So you can see that my problem is that unless I can get a cheaper 
replacement I might as well sell the K2/100 either in bits for spares 
or at a discount.


The encoder does work fine but it has suffered a knock which has made 
it slightly stiff to turn, i.e it wont 'spin', but it is useable.


So thanks for the thoughts

73 Bob G3PJT








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Re: [Elecraft] K2 main encoder wanted

[Vic Rosenthal 4X6GP]

Are you certain that a bit of fiber from the felt washer hasn't worked 
its way between the shaft and the bushing? That is a known problem.


73,
Vic, 4X6GP
Rehovot, Israel
Formerly K2VCO
http://www.qsl.net/k2vco/

On 23 Mar 2017 11:41, Bob G3PJT wrote:

Hi Don

Thanks for the reply. I did know about the new encoder kit but the 
problem is that of its cost when it gets here.


Elecraft quote 124USD for the kit, that's £100 here which then gets 
VAT at 20% and a local handling charge - say a total of £130-140 and 
as well if I read things correctly I will need to get a new knob.


So you can see that my problem is that unless I can get a cheaper 
replacement I might as well sell the K2/100 either in bits for spares 
or at a discount.


The encoder does work fine but it has suffered a knock which has made 
it slightly stiff to turn, i.e it wont 'spin', but it is useable.


So thanks for the thoughts

73 Bob G3PJT






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Re: [Elecraft] K2 main encoder wanted

[Bob G3PJT]

Hi Don

Thanks for the reply. I did know about the new encoder kit but the 
problem is that of its cost when it gets here.


Elecraft quote 124USD for the kit, that's £100 here which then gets VAT 
at 20% and a local handling charge - say a total of £130-140 and as well 
if I read things correctly I will need to get a new knob.


So you can see that my problem is that unless I can get a cheaper 
replacement I might as well sell the K2/100 either in bits for spares or 
at a discount.


The encoder does work fine but it has suffered a knock which has made it 
slightly stiff to turn, i.e it wont 'spin', but it is useable.


So thanks for the thoughts

73 Bob G3PJT




On 22/03/2017 22:17, Don Wilhelm wrote:

Bob,

You can get the new encoder from Elecraft - it is p/n K2ENCASY.
It contains the new encoder, a new knob and several other components 
as well as the encoder board.


If this is your only option, be aware that the spacing between the new 
encoder board and the back of the Control Board is critical.
You must flush trim the leads on the Control Board where it can 
contact the encoder board and also flush trim the encoder board after 
it is assembled.  Flush trimming means really flush - diagonal cutters 
are not sufficient.


You will also have to enlarge the hole for the encoder in the Front 
Panel metalwork a bit.  A knife run around the hole a couple times 
will allow the encoder shaft adequate clearance.


You might want to put a piece of "fish paper" between the encoder 
board and the Control Board.


73,
Don W3FPR

On 3/22/2017 5:59 PM, Bob G3PJT wrote:

Hi

I need a main tuning encoder of a K2. The Elecraft part number is
E640003 and on the back the makers number is EC202C025A-2TD

If you have one spare please mail me off list

73 and thanks

Bob G3PJT




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