[Elecraft] WTB - KAT3 or KAT3A

[David Lee / Seatools]

Looking for a K3 antenna tuner.

Dave / W6ZL
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Re: [Elecraft] Need Mic adapter: Icom SM-50 to K3 mic input jack

[Pete Smith N4ZR]

Or... you can use the standard stereo mini plug which is usually 
supplied with condenser mikes and plug into the mic jack on the rear of 
the K3.  I use a Yamaha CM550 and it plugged directly into my K3 - just 
had to remember to enable bias on the rear mike jack.  I don't know 
which flavor of mic those two are, but page 28 of the K3 manual (and 
nowhere else I can find) explains what to do.


73, Pete N4ZR
Check out the new Reverse Beacon Network
web server at .
For spots, please use your favorite
"retail" DX cluster.

On 11/2/2021 5:32 PM, Don Wilhelm wrote:

Bob,

The Elecraft mic pinout is ALMOST the same as Kenwood's
The Elecraft pin 6 carries +5 volts while for Kenwood, the +5 volts is 
on pin 5.

Pin 5 for Elecraft is the Function button.

If your microphone does not require +5 volts and does not have buttons 
other than PTT, then you only have to be concerned about pin 1 (AF), 
pin 2 (PTT) and pins 7 and 8 (one for PTT return and the other for AF 
return - both are connected together inside the K3).


Icom and Yaesu are not as straightforward, see the G4WPW info at 
https://www.qsl.net/g4wpw/date.html for details on the pinout for 
those mics.


If you can do a bit of soldering, you can make and adapter for the 
price of a male and female Foster connector and a bit of wire.  If you 
rewire the Foster connector on the mic, you don't need any adapter or 
connectors at all, just a bit of solder, to unsolder the wires from 
the existing connector and solder them in the correct pins for the K3.


OTOH, if you wish to switch back and forth between the Icom/Yaesu 
pinout and the Elecraft, the adapter or the MFJ box would be the best 
choice.


73,
Don W3FPR

On 11/2/2021 4:34 PM, Gary Peterson wrote:
It appears that MFJ makes a box, designed to convert one brand’s mic 
connector to others.  It appears to be programmable, using jumpers.


I believe the Foster connectors on the K3 or K3S are wired the same 
as Kenwood’s.


The model number is MFJ 1263.  I have not used or seen one, so cannot 
comment on its utility.


Gary
K0CX


I have no microphone for my K3. I am usually on CW or the digital modes.
Now I want to get on the KY Phone Net on 3838.

So I talked DXEngineering and they know of no adapter plug/cable.

So, I have an Icom SM-50 mic  and a Yaesu MD-100 mic.

Anyone know of an adapter connector that would fit either to adapt 
them to the K3?
Or maybe a universal box that lets me plug all the mic's in and have 
a cable to the K3 

Also run an Icom IC-9700 FWIW.
Bob KD7YZ



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Re: [Elecraft] Need Mic adapter: Icom SM-50 to K3 mic input jack

[Don Wilhelm]

Bob,

The Elecraft mic pinout is ALMOST the same as Kenwood's
The Elecraft pin 6 carries +5 volts while for Kenwood, the +5 volts is 
on pin 5.

Pin 5 for Elecraft is the Function button.

If your microphone does not require +5 volts and does not have buttons 
other than PTT, then you only have to be concerned about pin 1 (AF), pin 
2 (PTT) and pins 7 and 8 (one for PTT return and the other for AF return 
- both are connected together inside the K3).


Icom and Yaesu are not as straightforward, see the G4WPW info at 
https://www.qsl.net/g4wpw/date.html for details on the pinout for those 
mics.


If you can do a bit of soldering, you can make and adapter for the price 
of a male and female Foster connector and a bit of wire.  If you rewire 
the Foster connector on the mic, you don't need any adapter or 
connectors at all, just a bit of solder, to unsolder the wires from the 
existing connector and solder them in the correct pins for the K3.


OTOH, if you wish to switch back and forth between the Icom/Yaesu pinout 
and the Elecraft, the adapter or the MFJ box would be the best choice.


73,
Don W3FPR

On 11/2/2021 4:34 PM, Gary Peterson wrote:

It appears that MFJ makes a box, designed to convert one brand’s mic connector 
to others.  It appears to be programmable, using jumpers.

I believe the Foster connectors on the K3 or K3S are wired the same as 
Kenwood’s.

The model number is MFJ 1263.  I have not used or seen one, so cannot comment 
on its utility.

Gary
K0CX


I have no microphone for my K3. I am usually on CW or the digital modes.
Now I want to get on the KY Phone Net on 3838.

So I talked DXEngineering and they know of no adapter plug/cable.

So, I have an Icom SM-50 mic  and a Yaesu MD-100 mic.

Anyone know of an adapter connector that would fit either to adapt them to the 
K3?
Or maybe a universal box that lets me plug all the mic's in and have a cable to 
the K3 
Also run an Icom IC-9700 FWIW.
Bob KD7YZ



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[Elecraft] Need Mic adapter: Icom SM-50 to K3 mic input jack

[Gary Peterson]

It appears that MFJ makes a box, designed to convert one brand’s mic connector 
to others.  It appears to be programmable, using jumpers.  

I believe the Foster connectors on the K3 or K3S are wired the same as 
Kenwood’s.

The model number is MFJ 1263.  I have not used or seen one, so cannot comment 
on its utility.

Gary
K0CX


I have no microphone for my K3. I am usually on CW or the digital modes.
Now I want to get on the KY Phone Net on 3838.

So I talked DXEngineering and they know of no adapter plug/cable.

So, I have an Icom SM-50 mic  and a Yaesu MD-100 mic.

Anyone know of an adapter connector that would fit either to adapt them to the 
K3?
Or maybe a universal box that lets me plug all the mic's in and have a cable to 
the K3 
Also run an Icom IC-9700 FWIW.
Bob KD7YZ
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Re: [Elecraft] Problem Tuning K3

[CUTTER DAVID via Elecraft]

Hi Jim

Not many folks have the space or ability to put up a full set of resonant 
dipoles.  The MODERN off centre fed dipole is as good as you'll get any 
multiband antenna and for the most part will not need a separate antenna match 
box.  

I suggest you measure the common mode current on a decent ocf dipole and see 
for yourself. Great progress has been made in the last few years and, yes I use 
your cookbook.  

David G3UNA

 
> On 02 November 2021 at 19:09 Jim Brown  wrote:
> 
> 
> On 11/2/2021 11:50 AM, CUTTER DAVID wrote:
> > Don't stay stuck in the past: not all ocf dipoles are created equal.
> > With properly designed transformers and chokes, the common mode current can 
> > be tamed to perfectly decent levels.
> 
> I suspect you don't understand the physics of the problem. OCF antennas 
> are a yesterday's approach to multiband antennas. They are a recipe for 
> RX noise and RF in the shack. The concept was developed decades ago, 
> when there was far less noise than there is today. It's possible to fool 
> yourself that it's working fine, but you can't hear very well, so you 
> miss stations calling you.
> 
> I run legal limit on FT8 for weak signal work on 6M and difficult paths 
> on 160M (EU from California) into resonant antennas that are choked and 
> fed with RG8 or RG11, and I regularly get signal reports 15-20 dB worse 
> than I give. Since signal reports on FT8 are signal to noise, that means 
> the other station can't hear.
> 
> 73, Jim K9YC
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Re: [Elecraft] Problem Tuning K3

[Ray]

Jim…… 
First….. what length is your OCFD ?
2nd……   What Height above ground ?
3rd……   What Feed line are you using ?
4th ……   What Band do you Operate on Most ?
I can Model the Antenna and give you the results .

Ray WA6VAB  K3  


From: CUTTER DAVID via Elecraft
Sent: Tuesday, November 2, 2021 11:50 AM
To: j...@audiosystemsgroup.com; elecraft@mailman.qth.net
Subject: Re: [Elecraft] Problem Tuning K3

Jim

Don't stay stuck in the past: not all ocf dipoles are created equal. 
With properly designed transformers and chokes, the common mode current can be 
tamed to perfectly decent levels.  

David G3UNA

> On 02 November 2021 at 18:25 Jim Brown  wrote:
> 
> 
> On 11/2/2021 6:15 AM, Bill via Elecraft wrote:
> > I assume your using a balun with your
> > OFC antenna. I had a similar problem with my OCF that turned out to be the 
> > balun.  It was fine under low power but would not tune under high power.
> 
> NO! The problem was that by their nature, OCF antennas are BADLY 
> unbalanced, placing very high stress on a common mode choke, so are 
> likely to fry ANY common mode choke that does anything useful.
> 
> Study k9yc.com/RFI-Ham.pdf
> 
> AND -- erase the word "balun" from your vocabulary. It is used to 
> describe almost a dozen very different things, obscuring understanding 
> of how things work.
>
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Re: [Elecraft] Problem Tuning K3

[Jim Brown]

On 11/2/2021 11:50 AM, CUTTER DAVID wrote:

Don't stay stuck in the past: not all ocf dipoles are created equal.
With properly designed transformers and chokes, the common mode current can be 
tamed to perfectly decent levels.


I suspect you don't understand the physics of the problem. OCF antennas 
are a yesterday's approach to multiband antennas. They are a recipe for 
RX noise and RF in the shack. The concept was developed decades ago, 
when there was far less noise than there is today. It's possible to fool 
yourself that it's working fine, but you can't hear very well, so you 
miss stations calling you.


I run legal limit on FT8 for weak signal work on 6M and difficult paths 
on 160M (EU from California) into resonant antennas that are choked and 
fed with RG8 or RG11, and I regularly get signal reports 15-20 dB worse 
than I give. Since signal reports on FT8 are signal to noise, that means 
the other station can't hear.


73, Jim K9YC




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Re: [Elecraft] Problem Tuning K3

[CUTTER DAVID via Elecraft]

Jim

Don't stay stuck in the past: not all ocf dipoles are created equal. 
With properly designed transformers and chokes, the common mode current can be 
tamed to perfectly decent levels.  

David G3UNA

> On 02 November 2021 at 18:25 Jim Brown  wrote:
> 
> 
> On 11/2/2021 6:15 AM, Bill via Elecraft wrote:
> > I assume your using a balun with your
> > OFC antenna. I had a similar problem with my OCF that turned out to be the 
> > balun.  It was fine under low power but would not tune under high power.
> 
> NO! The problem was that by their nature, OCF antennas are BADLY 
> unbalanced, placing very high stress on a common mode choke, so are 
> likely to fry ANY common mode choke that does anything useful.
> 
> Study k9yc.com/RFI-Ham.pdf
> 
> AND -- erase the word "balun" from your vocabulary. It is used to 
> describe almost a dozen very different things, obscuring understanding 
> of how things work.
>
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Re: [Elecraft] Problem Tuning K3

[CUTTER DAVID via Elecraft]

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Re: [Elecraft] Need Mic adapter: Icom SM-50 to K3 mic input jack

[Raymond Sills via Elecraft]

Or for $70, you could buy the MH4 mic from Elecraft.  Works with the 
K4,K3S, K3 and K2.

73 de RayK2ULR

-Original Message-
From: j...@kk9a.com
To: elecraft@mailman.qth.net
Sent: Tue, Nov 2, 2021 2:15 pm
Subject: Re: [Elecraft] Need Mic adapter: Icom SM-50 to K3 mic input jack

You will have to either rewire the Icom mic's Foster plug or you need to
purchase the Foster plug adaptor for the Yaesu mic and then rewire it.

John KK9A

Bob KD7YZ wrote:

I have no microphone for my K3. I am usually on CW or the digital modes.
Now I want to get on the KY Phone Net on 3838.

So I talked DXEngineering and they know of no adapter plug/cable.

So, I have an Icom SM-50 mic  and a Yaesu MD-100 mic.

Anyone know of an adapter connector that would fit either to adapt them to
the K3?
Or maybe a universal box that lets me plug all the mic's in and have a cable
to the K3 
Also run an Icom IC-9700 FWIW.

thanks!


--
73,
KD7YZ Bob EM88LL

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Re: [Elecraft] Problem Tuning K3

[Jim Brown]

On 11/2/2021 6:15 AM, Bill via Elecraft wrote:

I assume your using a balun with your
OFC antenna. I had a similar problem with my OCF that turned out to be the 
balun.  It was fine under low power but would not tune under high power.


NO! The problem was that by their nature, OCF antennas are BADLY 
unbalanced, placing very high stress on a common mode choke, so are 
likely to fry ANY common mode choke that does anything useful.


Study k9yc.com/RFI-Ham.pdf

AND -- erase the word "balun" from your vocabulary. It is used to 
describe almost a dozen very different things, obscuring understanding 
of how things work.


73, Jim K9YC
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Re: [Elecraft] Need Mic adapter: Icom SM-50 to K3 mic input jack

[john]

You will have to either rewire the Icom mic's Foster plug or you need to
purchase the Foster plug adaptor for the Yaesu mic and then rewire it.

John KK9A

Bob KD7YZ wrote:

I have no microphone for my K3. I am usually on CW or the digital modes.
Now I want to get on the KY Phone Net on 3838.

So I talked DXEngineering and they know of no adapter plug/cable.

So, I have an Icom SM-50 mic  and a Yaesu MD-100 mic.

Anyone know of an adapter connector that would fit either to adapt them to
the K3?
Or maybe a universal box that lets me plug all the mic's in and have a cable
to the K3 
Also run an Icom IC-9700 FWIW.

thanks!


--
73,
KD7YZ Bob EM88LL

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Re: [Elecraft] Problem Tuning K3-" Balun"

[David Gilbert]

A common mode choke (not really a balun) at a point of high SWR can heat 
up and as it does so everything drifts, making tuning impossible.  Been 
there, done that using high power to a 160m Inverted-L that was close to 
resonant, but due to expediency was fed at a point of high SWR.  A 
relayout of the antenna to lower the SWR fixed everything using the same 
choke (which luckily hadn't been permanently damaged).


73,
Dave


From: Bill via Elecraft
Sent: Tuesday, November 2, 2021 6:15 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Problem Tuning K3

Jim,
I assume your using a balun with your
OFC antenna. I had a similar problem with my OCF that turned out to be the 
balun.  It was fine under low power but would not tune under high power.

Thanks,
Bill - W0BBI


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Re: [Elecraft] Need Mic adapter: Icom SM-50 to K3 mic input jack

[Don Wilhelm]

Microphone schematics and other info can be found at 
https://www.qsl.net/g4wpw/date.html.


73,
Don W3FPR

On 11/2/2021 11:38 AM, Ken Winterling wrote:

Bob,

Can you build adapters if you have schematics?
DIY gives you lots of possibilities.
⁣



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Re: [Elecraft] Need Mic adapter: Icom SM-50 to K3 mic input jack

[Ken Winterling]

Bob,

Can you build adapters if you have schematics?
DIY gives you lots of possibilities.
⁣
Ken
WA2LBI​

On Nov 2, 2021, 09:35, at 09:35, Bob KD7YZ  wrote:
>Hello Elecraft List
>
>I have no microphone for my K3. I am usually on CW or the digital
>modes.
>Now I want to get on the KY Phone Net on 3838.
>
>So I talked DXEngineering and they know of no adapter plug/cable.
>
>So, I have an Icom SM-50 mic  and a Yaesu MD-100 mic.
>
>Anyone know of an adapter connector that would fit either to adapt them
>to the K3?
>Or maybe a universal box that lets me plug all the mic's in and have a
>cable to the K3 
>Also run an Icom IC-9700 FWIW.
>
>thanks!
>
>
>--
>73,
>KD7YZ Bob EM88LL
>
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Re: [Elecraft] Rf Choke placement

[Rick NK7I]

Some folks, for esthetics usually, put chokes and resistors in only one 
direction throughout the build, which may simplify finding mistakes later, the 
numbers or color code direction is always the same.

Pretty is only relevant to the builder hi hi.  

73,
Rick NK7I

Email spiel Czech corruptions happen

> On Nov 2, 2021, at 7:50 AM, Don Wilhelm  wrote:
> 
> Those RF chokes are bi-lateral - they can be installed either way, just like 
> resistors.
> 
> 73,
> Don W3FPR
> 
>> On 11/2/2021 10:18 AM, JAMES GUNNOE wrote:
>> Hi all,
>> Building a K2 kit.
>> Does it matter which way to install the RF chokes? I am speaking of the 
>> color coded ones that resemble resistors.
> 
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Re: [Elecraft] Problem Tuning K3-" Balun"

[Joe Moffatt]

U

Get Outlook for iOS

From: elecraft-boun...@mailman.qth.net  on 
behalf of Ray 
Sent: Tuesday, November 2, 2021 10:00:06 AM
To: bw39...@yahoo.com ; elecraft@mailman.qth.net 

Subject: Re: [Elecraft] Problem Tuning K3-" Balun"

I agree…. Feedline’s Best Friend !
WA6VAB Ray K3


From: Bill via Elecraft
Sent: Tuesday, November 2, 2021 6:15 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Problem Tuning K3

Jim,
I assume your using a balun with your
OFC antenna. I had a similar problem with my OCF that turned out to be the 
balun.  It was fine under low power but would not tune under high power.

Thanks,
Bill - W0BBI
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Re: [Elecraft] Problem Tuning K3-" Balun"

[Ray]

I agree…. Feedline’s Best Friend ! 
WA6VAB Ray K3 


From: Bill via Elecraft
Sent: Tuesday, November 2, 2021 6:15 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Problem Tuning K3

Jim,
I assume your using a balun with your 
OFC antenna. I had a similar problem with my OCF that turned out to be the 
balun.  It was fine under low power but would not tune under high power. 

Thanks, 
Bill - W0BBI 
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Re: [Elecraft] Rf Choke placement

[Don Wilhelm]

Those RF chokes are bi-lateral - they can be installed either way, just 
like resistors.


73,
Don W3FPR

On 11/2/2021 10:18 AM, JAMES GUNNOE wrote:

Hi all,
Building a K2 kit.
Does it matter which way to install the RF chokes? I am speaking of the color 
coded ones that resemble resistors.




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[Elecraft] Rf Choke placement

[JAMES GUNNOE]

Hi all,
Building a K2 kit.
Does it matter which way to install the RF chokes? I am speaking of the color 
coded ones that resemble resistors.

Thank you

James, KJ4KEM
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[Elecraft] Need Mic adapter: Icom SM-50 to K3 mic input jack

[Bob KD7YZ]

Hello Elecraft List

I have no microphone for my K3. I am usually on CW or the digital modes.
Now I want to get on the KY Phone Net on 3838.

So I talked DXEngineering and they know of no adapter plug/cable.

So, I have an Icom SM-50 mic  and a Yaesu MD-100 mic.

Anyone know of an adapter connector that would fit either to adapt them to the 
K3?
Or maybe a universal box that lets me plug all the mic's in and have a cable to 
the K3 
Also run an Icom IC-9700 FWIW.

thanks!


--
73,
KD7YZ Bob EM88LL

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[Elecraft] Problem Tuning K3

[Bill via Elecraft]

Jim,
I assume your using a balun with your 
OFC antenna. I had a similar problem with my OCF that turned out to be the 
balun.  It was fine under low power but would not tune under high power. 

Thanks, 
Bill - W0BBI 
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Re: [Elecraft] loss of receive audio on K3

[Victor Rosenthal 4X6GP]

Yesterday was Halloween, Doug.

73,
Victor, 4X6GP
Rehovot, Israel
CWops #5
Formerly K2VCO
https://www.qsl.net/k2vco/
On 01/11/2021 15:20, Douglas Zwiebel wrote:

  I had the strangest thing happenyesterday (K3, 1st prod run).

All of a sudden, I lost all audio output (headphones).  I pull the
headphones, but same thing on the internal spkr.  Radio was tuning,
receiving (per P3) and transmitting, but zero AF output.

After 15 seconds of wonder, I turned the K3off, waited 30 seconds and
turned it back on.  All was back to normal.

At one point, I heard a low rumble, like someone strong was tuning up on
me.  But no.  That immediately preceded the loss of AF.

After I turned it back on, after another 5-10 minutes, I again heard the
low rumble..but nobody tuning up on me...and this time, no loss of AF.

Again that same rumble happened again, but that time the AF went to about
50% but then came back after I transmitted a dit (just dumb luck timing?).

Have you heard any stories like this before or is this a novel experience?

Thanks
de Doug KR2Q

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