Date   

K3 Mods and updates

cstaylorod@...
 

I am looking for advice on updates and mods I should add to my K3, SN 2756. It has dual receivers, a full compliment of filters. I am adding the new synth boards and the input/output for the P3.  I figured as long as I was opening it up I should bring it up to date. What do you recommend? I operate mostly CW, some SSB and digital. Thank you for your help. 73, Craig/W9OD


Re: [Elecraft_K3] Would like to find a K3S owner who has easy access to the headphone jack on the back to run a quick test

w7aqk
 

Dick,
 
It should be no different than the K3.  I’m guessing you have a K3S and are having a problem???  Did you change the menu to use the rear microphone plug????
 
Dave W7AQK
 
Sent: Friday, October 2, 2015 2:43 PM
Subject: [Elecraft_K3] Would like to find a K3S owner who has easy access to the headphone jack on the back to run a quick test
 
 

I would like to talk to a K3S owner who has easy access to the rear panel and can plug a headset into the back, and still transmit SSB.
 
Dick, K8ZTT


Re: [Elecraft_K3] Would like to find a K3S owner who has easy access to the headphone jack on the back to run a quick test

William Conkling <bconk75@...>
 

Care to explain?

Mine seems to work just fine. What issues are you having?

I have K3S with sub and DVR and some filters. Using CM500 mic plugged in rear mic jack.  Mic sel is RPL BIAS and I have mic gain at 9 and CMP set to 17. I have some TX EQ set as well (-16,-16,-06, 0,0,3,2,0). 

...nr4c. bill


On Oct 2, 2015, at 5:43 PM, Richard Williams k8ztt@... [Elecraft_K3] <Elecraft_K3@...> wrote:

 

I would like to talk to a K3S owner who has easy access to the rear panel and can plug a headset into the back, and still transmit SSB.

Dick, K8ZTT


Re: [Elecraft_K3] Re: K3 - background hiss (noisy K3) - update

mikerodgerske5gbc
 

Also some USB devices and cords can cause noise at times so lookout for that. 
Try unplugging or powering off nearby devices. 

Good luck. 

73
Mike R

Find me on "Zello", a walkie talkie or handi talkie type app. I'm listed as KE5GBC. I'm mostly on late at night. 

On Oct 2, 2015, at 4:17 PM, "bozidarms@... [Elecraft_K3]" <Elecraft_K3@...> wrote:

 

Hi Mel,
interesting idea, i will try that,
tnx, 73
Bozidar,S50BN


Re: Elecraft K3s vs.Flex 6500

miscwrc@...
 

< I was very happy with but wanted to go 2015 technology.>

WHY? Tony, if you are still on the fence. Send me an email at my call at arrl dot net.

I think the whole 'labelling' thing SDR gen 1 vs SDR gen 3 is kind of silly. It's a manufactured name.

Neither Elecraft, Kenwood, Yaesu or ICOM have ceded the entire Amateur Radio market space to FlexRadioSystems.

Walt - kz1f


K3S owners in the CT, MA, RI area

miscwrc@...
 

Hi,
    I am strongly considering getting a K3S. I would really like to see one and hear one first though. I am in Killingly, CT (NE CT). If there are any owners driving distance from there and wouldn't mind doing a show and tell, I would greatly appreciate it. I already have the KPA-500 and KAT-500.

    Additionally, I've spent the better part of 2 years listening to the fan boys on the IHeartFlex board, I'd like to hear the rejoinder.

Thanks,

Walt - kz1f

   


Would like to find a K3S owner who has easy access to the headphone jack on the back to run a quick test

Richard Williams
 

I would like to talk to a K3S owner who has easy access to the rear panel and can plug a headset into the back, and still transmit SSB.

Dick, K8ZTT


Re: Elecraft K3s vs.Flex 6500

miscwrc@...
 

Tony,

   Are you still undecided?


Re: K3 - background hiss (noisy K3) - update

bozidar nikolic
 

Hi Mel,
interesting idea, i will try that,
tnx, 73
Bozidar,S50BN


Re: [Elecraft_K3] P3 and 2 meters

barry NF1O
 

it does with an external transverter so i would bet it does.
i have a 222 mhz transverter and it works fb.
barry
nf1o


From: Elecraft_K3@...
To: Elecraft_K3@...
Date: Fri, 2 Oct 2015 09:25:52 -0700
Subject: [Elecraft_K3] P3 and 2 meters

 

Does the P3 work (show the 2 meter band) with the K3S with the 2 meter module?


73


Frank


WA3RSL


Re: [Elecraft_K3] Firmware updating

Rudolf Schaffer
 

Ok David !
Have a nice week-end,
Rudi

Le 02.10.2015 18:39, 'David G3YYD' g3yyd@... [Elecraft_K3] a écrit :

 

Everything that the utility says to do

 

From: Elecraft_K3@... [mailto:Elecraft_K3@...]
Sent: 02 October 2015 14:57
To: Elecraft_K3@...
Subject: Re: [Elecraft_K3] Firmware updating

 



David, after installing the K3 utility and copying the latest versions from Elecraft site, i've just a last question:
Can i update all FW or are some updates only compatible with K3 hardware modifications ?
Thank you very much for your help.
73 QRO,
Rudi, HB9ARI

Le 02.10.2015 16:15, 'David G3YYD' g3yyd@... [Elecraft_K3] a écrit :

 

Got to here: http://www.elecraft.com/K3/k3_software.htm

Download K3 utility first & install, configure for K3 serial port then use it to download firmware and then load it into K3.

73 David G3YYD

-----Original Message-----
From: Elecraft_K3@... [mailto:Elecraft_K3@...]
Sent: 02 October 2015 13:31
To: Elecraft_K3@...
Subject: [Elecraft_K3] Firmware updating

Hello,

I've an "old" K3 (#1212) and also an old FW:

dr 00.00
d1 02.49
d2 00.00
FL 01.06
uC 03.68

No hardware modifications were done.
To use a particular SW, i need the SMH command and i've only the SM recognized with the current FW status.

What procedure should i follow to update until SMH command active ?

Thank you for your help.

73 QRO,
Rudi, HB9ARI

------------------------------------
Posted by: Rudolf Schaffer
------------------------------------

------------------------------------

Yahoo Groups Links







Re: [Elecraft_K3] Firmware updating

David G3YYD <g3yyd@...>
 

Everything that the utility says to do

 

From: Elecraft_K3@... [mailto:Elecraft_K3@...]
Sent: 02 October 2015 14:57
To: Elecraft_K3@...
Subject: Re: [Elecraft_K3] Firmware updating

 



David, after installing the K3 utility and copying the latest versions from Elecraft site, i've just a last question:
Can i update all FW or are some updates only compatible with K3 hardware modifications ?
Thank you very much for your help.
73 QRO,
Rudi, HB9ARI

Le 02.10.2015 16:15, 'David G3YYD' g3yyd@... [Elecraft_K3] a écrit :

 

Got to here: http://www.elecraft.com/K3/k3_software.htm

Download K3 utility first & install, configure for K3 serial port then use it to download firmware and then load it into K3.

73 David G3YYD

-----Original Message-----
From: Elecraft_K3@... [mailto:Elecraft_K3@...]
Sent: 02 October 2015 13:31
To: Elecraft_K3@...
Subject: [Elecraft_K3] Firmware updating

Hello,

I've an "old" K3 (#1212) and also an old FW:

dr 00.00
d1 02.49
d2 00.00
FL 01.06
uC 03.68

No hardware modifications were done.
To use a particular SW, i need the SMH command and i've only the SM recognized with the current FW status.

What procedure should i follow to update until SMH command active ?

Thank you for your help.

73 QRO,
Rudi, HB9ARI

------------------------------------
Posted by: Rudolf Schaffer
------------------------------------

------------------------------------

Yahoo Groups Links






P3 and 2 meters

fdew@...
 

Does the P3 work (show the 2 meter band) with the K3S with the 2 meter module?


73


Frank


WA3RSL


Re: [Elecraft_K3] Firmware updating

Rudolf Schaffer
 

David, after installing the K3 utility and copying the latest versions from Elecraft site, i've just a last question:
Can i update all FW or are some updates only compatible with K3 hardware modifications ?
Thank you very much for your help.
73 QRO,
Rudi, HB9ARI


Le 02.10.2015 16:15, 'David G3YYD' g3yyd@... [Elecraft_K3] a écrit :

 

Got to here: http://www.elecraft.com/K3/k3_software.htm

Download K3 utility first & install, configure for K3 serial port then use it to download firmware and then load it into K3.

73 David G3YYD

-----Original Message-----
From: Elecraft_K3@... [mailto:Elecraft_K3@...]
Sent: 02 October 2015 13:31
To: Elecraft_K3@...
Subject: [Elecraft_K3] Firmware updating

Hello,

I've an "old" K3 (#1212) and also an old FW:

dr 00.00
d1 02.49
d2 00.00
FL 01.06
uC 03.68

No hardware modifications were done.
To use a particular SW, i need the SMH command and i've only the SM recognized with the current FW status.

What procedure should i follow to update until SMH command active ?

Thank you for your help.

73 QRO,
Rudi, HB9ARI

------------------------------------
Posted by: Rudolf Schaffer
------------------------------------

------------------------------------

Yahoo Groups Links



Re: [Elecraft_K3] Firmware updating

Rudolf Schaffer
 

Thank you David for your quick reply and info.
My best 73,
Rudi

Le 02.10.2015 16:15, 'David G3YYD' g3yyd@... [Elecraft_K3] a écrit :

 

Got to here: http://www.elecraft.com/K3/k3_software.htm

Download K3 utility first & install, configure for K3 serial port then use it to download firmware and then load it into K3.

73 David G3YYD

-----Original Message-----
From: Elecraft_K3@... [mailto:Elecraft_K3@...]
Sent: 02 October 2015 13:31
To: Elecraft_K3@...
Subject: [Elecraft_K3] Firmware updating

Hello,

I've an "old" K3 (#1212) and also an old FW:

dr 00.00
d1 02.49
d2 00.00
FL 01.06
uC 03.68

No hardware modifications were done.
To use a particular SW, i need the SMH command and i've only the SM recognized with the current FW status.

What procedure should i follow to update until SMH command active ?

Thank you for your help.

73 QRO,
Rudi, HB9ARI

------------------------------------
Posted by: Rudolf Schaffer
------------------------------------

------------------------------------

Yahoo Groups Links



Re: [Elecraft_K3] Firmware updating

David G3YYD <g3yyd@...>
 

Got to here: http://www.elecraft.com/K3/k3_software.htm

Download K3 utility first & install, configure for K3 serial port then use it to download firmware and then load it into K3.

73 David G3YYD

-----Original Message-----
From: Elecraft_K3@... [mailto:Elecraft_K3@...]
Sent: 02 October 2015 13:31
To: Elecraft_K3@...
Subject: [Elecraft_K3] Firmware updating

Hello,

I've an "old" K3 (#1212) and also an old FW:

dr 00.00
d1 02.49
d2 00.00
FL 01.06
uC 03.68

No hardware modifications were done.
To use a particular SW, i need the SMH command and i've only the SM recognized with the current FW status.

What procedure should i follow to update until SMH command active ?

Thank you for your help.

73 QRO,
Rudi, HB9ARI




------------------------------------
Posted by: Rudolf Schaffer <rudolf.schaffer@...>
------------------------------------


------------------------------------

Yahoo Groups Links


Firmware updating

Rudolf Schaffer
 

Hello,

I've an "old" K3 (#1212) and also an old FW:

dr 00.00
d1 02.49
d2 00.00
FL 01.06
uC 03.68

No hardware modifications were done.
To use a particular SW, i need the SMH command and i've only
the SM recognized with the current FW status.

What procedure should i follow to update until SMH command active ?

Thank you for your help.

73 QRO,
Rudi, HB9ARI


Re: [Elecraft_K3] K3 - background hiss (noisy K3) - update

bozidar nikolic
 

Hallo Mike,

i simply don`t know what make this hiss.
One interesting thing, i forgot to tell, is that hiss is constant present but slightly vary in strength.
I have try to put some resistance in series with this headphones and this helps, but, that is es you cure something and you don`t know the relay cause.

73,
Bozidar, S50BN


Re: [Elecraft_K3] K3 - background hiss (noisy K3) - update

Mel Farrer <farrerfolks@...>
 

Might I ask if you have tried to isolate the source?  In the tube days a gentle hiss was attributed to the electron bombardment of the plate from the cathode and was never "completely" eliminated.  While we are now in the days of SS, that issue is mute.  However, I suggest as mentioned earlier, that you might have a external source of the "hiss".

I would connect a scope to the audio output through a 1:1 audio isolation transformer and determine the frequency bandwidth and characteristics of the "hiss".  Then start isolating the K3 from all connections down to running it on a floating battery. 

I do not have your "hiss" and I am totally battery powered from solar.  That includes shorting the antenna terminals after reading your thread.  Hope you find the source,

Mel, K6KBE


From: "mikerodgerske5gbc@... [Elecraft_K3]" <Elecraft_K3@...>
To: "Elecraft_K3@..."
Sent: Thursday, October 1, 2015 8:22 PM
Subject: Re: [Elecraft_K3] K3 - background hiss (noisy K3) - update

 
I tried this on k3 5047 using some cheap earbuds and I plugged in my dusty cm500's. 

I can barely detect anything, even less so with the cm500. Plugged into the external speaker jack. 

Is it possible you are picking up something through a ground loop condition?

73
Mike R

Find me on "Zello", a walkie talkie or handi talkie type app. I'm listed as KE5GBC. I'm mostly on late at night. 

On Sep 29, 2015, at 6:45 AM, "bozidarms@... [Elecraft_K3]" <Elecraft_K3@...> wrote:

 

Hi,
i have studied all the posts about this topic.
Seems, that is still, huge confusion about that, so i will try to formulate a problem on simply way:

With low impedance earphones plugged into the audio jack on the K3, you can hear a really annoying noise (hiss) even with the AF and RF volume set to zero(CCW). This audio hiss has a constant level, is added to the audible RF noise and can prevent one from hearing weak  signals on an otherwise quiet band.

That hiss has nothing to do with K3 receiver or settings - simply is permanent present.
This indicate that something must be wrong with earphones amplifier LM4811MM, and that is
odd, because LM4811MM seems to be an high quality chip, designed exactly to work with low impedance earphones , with a minimal amount of external components?
My question is:
is, in the mean time, known any hardware (or anything else) modification for that issue?

best regards,
Bozidar




Re: [Elecraft_K3] K3 - background hiss (noisy K3) - update

mikerodgerske5gbc
 

I tried this on k3 5047 using some cheap earbuds and I plugged in my dusty cm500's. 

I can barely detect anything, even less so with the cm500. Plugged into the external speaker jack. 

Is it possible you are picking up something through a ground loop condition?

73
Mike R

Find me on "Zello", a walkie talkie or handi talkie type app. I'm listed as KE5GBC. I'm mostly on late at night. 

On Sep 29, 2015, at 6:45 AM, "bozidarms@... [Elecraft_K3]" <Elecraft_K3@...> wrote:

 


Hi,
i have studied all the posts about this topic.
Seems, that is still, huge confusion about that, so i will try to formulate a problem on simply way:

With low impedance earphones plugged into the audio jack on the K3, you can hear a really annoying noise (hiss) even with the AF and RF volume set to zero(CCW). This audio hiss has a constant level, is added to the audible RF noise and can prevent one from hearing weak  signals on an otherwise quiet band.

That hiss has nothing to do with K3 receiver or settings - simply is permanent present.
This indicate that something must be wrong with earphones amplifier LM4811MM, and that is
odd, because LM4811MM seems to be an high quality chip, designed exactly to work with low impedance earphones , with a minimal amount of external components?
My question is:
is, in the mean time, known any hardware (or anything else) modification for that issue?

best regards,
Bozidar


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