Date   

Re: [Elecraft_K3] Err Key Message

Frank LaFranco
 

Hi Cary,
Somehow it looks like all your hardware module options were reset to un-installed.
 
Download the latest K3 Operators Manual from Elecraft:
 
Go to Page 47 and start reading "Option Module Enables"
It discusses in detail how to enable the KAT3 ATU, KBPF3, KXV3, KRX3, KDVR3, KPA3.
 
Follow the instructions given to enable the options you have installed in your K3.
 
73,
Frank - W6NEK
 

----- Original Message -----
 
Sent: Sunday, December 29, 2013 10:21 AM
Subject: Re: [Elecraft_K3] Err Key Message

 

A few questions  before I begin.
I ordered my K3 assembled, so I am at a disadvantage to knowing each module.  
I'me checking each of the functions. I'm also getting the messages:
 - NO SUB - when I try to turn on Sub Receiver.  The same goes for DVR
 - NO DVR

When I go into CONFIG and TECH Mode, for KPA3 it's saying not installed (not inST).  I haven't been able to find ATU.

Do I use the K3 Utility to check or reset any of these functions?

Thanks Again.

On Sun, Dec 29, 2013 at 9:59 AM, william conkling <bconk75@...> wrote:
 

Try re-installing the ATU and the KPA3.  Without the KPA3 you only have one antenna.  Remember, after setting ATU to installed you must close the menu and cycle power to the radio.  Also do same after reinstalling the KPA3.

Good luck.

...bill nr4c

On Dec 29, 2013 12:11 AM, <cary@...> wrote:
 

Thanks very much Bill.  

I think you are (were) onto something.
Now, at least, the ERR KEY message is gone and I can change bands on the radio.
(no more error message)

I did notice that both Mic Gain and Pwr (xmit) have been turned right down (Pwr - under 10w).  It looks like the K3 reset these levels themselves and I can't restore them to QRO levels.  

There is also an issue with the ATU.  It appears to be disabled.  
Tapping or holding down ATU brings up the message NO ATU. 
I get the same message (NO ATU) when trying to change antennas.  ie. the rig is "stuck" on ANT1.  Normally, it would switch automatically to ANT2.  (or I can tap the ANT button)

Is there some place in the manual where this is discussed?
Thanks again,
Cary

P.S. I just found ERR KEY in the manual (page 69).  There is a reference to CONFIG:PTT-KEY.  My PTT-KEY is set to OFF - OFF.


---In Elecraft_K3@{{emailDomain}}, wrote:

You have a stuck key.  One of a couple  things might cause it. 

VOX on and/or gain too high.
A key or paddle making contact when powering up the radio.

Jeep us posted.

...bill nr4c

On Dec 28, 2013 10:19 PM, <cary@...> wrote:
 

I was in the midst of contest operating (RAC) and murphy struck.  


I am receiving a message of ERR KEY on the LCD.  I can't seem to find any reference to this message in either the K3 manual or the Fred Kady book.  

Is there some way to clear this error condition?
I'd really like to know what I did to create the error (bad sequence of entries,etc.)

73 and Thanks,
Cary, VE4EA   (aka VE4RAC this weekend)



Re: [Elecraft_K3] Err Key Message

Cary VE4EA
 

A few questions  before I begin.
I ordered my K3 assembled, so I am at a disadvantage to knowing each module.  
I'me checking each of the functions. I'm also getting the messages:
 - NO SUB - when I try to turn on Sub Receiver.  The same goes for DVR
 - NO DVR

When I go into CONFIG and TECH Mode, for KPA3 it's saying not installed (not inST).  I haven't been able to find ATU.

Do I use the K3 Utility to check or reset any of these functions?

Thanks Again.

On Sun, Dec 29, 2013 at 9:59 AM, william conkling <bconk75@...> wrote:
 

Try re-installing the ATU and the KPA3.  Without the KPA3 you only have one antenna.  Remember, after setting ATU to installed you must close the menu and cycle power to the radio.  Also do same after reinstalling the KPA3.

Good luck.

...bill nr4c

On Dec 29, 2013 12:11 AM, <cary@...> wrote:
 

Thanks very much Bill.  

I think you are (were) onto something.
Now, at least, the ERR KEY message is gone and I can change bands on the radio.
(no more error message)

I did notice that both Mic Gain and Pwr (xmit) have been turned right down (Pwr - under 10w).  It looks like the K3 reset these levels themselves and I can't restore them to QRO levels.  

There is also an issue with the ATU.  It appears to be disabled.  
Tapping or holding down ATU brings up the message NO ATU. 
I get the same message (NO ATU) when trying to change antennas.  ie. the rig is "stuck" on ANT1.  Normally, it would switch automatically to ANT2.  (or I can tap the ANT button)

Is there some place in the manual where this is discussed?
Thanks again,
Cary

P.S. I just found ERR KEY in the manual (page 69).  There is a reference to CONFIG:PTT-KEY.  My PTT-KEY is set to OFF - OFF.


---In Elecraft_K3@{{emailDomain}}, wrote:

You have a stuck key.  One of a couple  things might cause it. 

VOX on and/or gain too high.
A key or paddle making contact when powering up the radio.

Jeep us posted.

...bill nr4c

On Dec 28, 2013 10:19 PM, <cary@...> wrote:
 

I was in the midst of contest operating (RAC) and murphy struck.  


I am receiving a message of ERR KEY on the LCD.  I can't seem to find any reference to this message in either the K3 manual or the Fred Kady book.  

Is there some way to clear this error condition?
I'd really like to know what I did to create the error (bad sequence of entries,etc.)

73 and Thanks,
Cary, VE4EA   (aka VE4RAC this weekend)



Re: What would you like to see on your K4 next Christmas

kd6qzx <kd6qzx@...>
 

I too love both my K3 and KX3, but if there were to be a K4 someday it will need to also have a multi color display and I agree with others on a USB direct interface
Scott AK6Q

--- In Elecraft_K3@yahoogroups.com, Tim Hague <m0afj@...> wrote:

A USB interface for digi modes similar to what Icom are providing and a better front end for 10 and 6, in this day and age we should not need to be buying preamps!

I still think it's a brilliant rig though before I get harangued by the Elecraft mafia...

Best regards, Tim Hague
Skype m0afj.Tim
Sent on my iPad


Re: [Elecraft_K3] Err Key Message

william conkling <bconk75@...>
 

Try re-installing the ATU and the KPA3.  Without the KPA3 you only have one antenna.  Remember, after setting ATU to installed you must close the menu and cycle power to the radio.  Also do same after reinstalling the KPA3.

Good luck.

...bill nr4c

On Dec 29, 2013 12:11 AM, <cary@...> wrote:
 

Thanks very much Bill.  

I think you are (were) onto something.
Now, at least, the ERR KEY message is gone and I can change bands on the radio.
(no more error message)

I did notice that both Mic Gain and Pwr (xmit) have been turned right down (Pwr - under 10w).  It looks like the K3 reset these levels themselves and I can't restore them to QRO levels.  

There is also an issue with the ATU.  It appears to be disabled.  
Tapping or holding down ATU brings up the message NO ATU. 
I get the same message (NO ATU) when trying to change antennas.  ie. the rig is "stuck" on ANT1.  Normally, it would switch automatically to ANT2.  (or I can tap the ANT button)

Is there some place in the manual where this is discussed?
Thanks again,
Cary

P.S. I just found ERR KEY in the manual (page 69).  There is a reference to CONFIG:PTT-KEY.  My PTT-KEY is set to OFF - OFF.


---In Elecraft_K3@{{emailDomain}}, wrote:

You have a stuck key.  One of a couple  things might cause it. 

VOX on and/or gain too high.
A key or paddle making contact when powering up the radio.

Jeep us posted.

...bill nr4c

On Dec 28, 2013 10:19 PM, <cary@...> wrote:
 

I was in the midst of contest operating (RAC) and murphy struck.  


I am receiving a message of ERR KEY on the LCD.  I can't seem to find any reference to this message in either the K3 manual or the Fred Kady book.  

Is there some way to clear this error condition?
I'd really like to know what I did to create the error (bad sequence of entries,etc.)

73 and Thanks,
Cary, VE4EA   (aka VE4RAC this weekend)


Re: [Elecraft_K3] DB-15 Y Cables for K3

Joe Subich, W4TV
 

On 12/28/2013 11:55 PM, Bill Axelrod wrote:
Just got a second K3 and am integrating it into my SO2R station. Since a
number of key functions come from the Aux jack which is a DB-15, I need to
use some Y cables (splitters) to chain the aux connections together. I
thought it would be easy since all I wanted to do was replicate the exact
arrangement I have for my first K3. So I went out and bought some DB-15 Y
cables. Well, that didn't work for me.



Not one of the five new Y cables work. I can use my original set on either
radio just fine but the new ones don't work anywhere. None have any
manufacture's name or part number on it. Other local hams have since told
me that they have experienced the same problem.



Anyone had a clue of where to buy DB-15 Y cables that work? I can not
remember where I got the ones I use on my first K3.



Thanks and 73... Bill K3WA




Re: DB-15 Y Cables for K3

K2MK@...
 

Hi Bill,

You can buy them from Elecraft. Also the ones from Winford work ok. The secret is getting one that has all of the pins connected and all of them straight through.

Elecraft part number E980190 at $9.95
http://www.winfordeng.com/products/cdy15hd.php

73,
Mike K2MK


Re: [Elecraft_K3] RIP Tokyo High Power

Dale J. <dj2001x@...>
 

From that the apparent reason,

"Company CEO/President Nobuki Wakabayashi, JA1DJW, founded Tokyo Hy-Power Labs in 1975. He blamed “the recent depression in the industrial RF power products area [which] has led to the very difficult financial position.”

They must have lost some commercial business that led to it's collapse. Hopefully another company will pick it up.

Dale, k9vuj

On 28, Dec 2013, at 9:08, Sam Morgan <k5oai.sam@gmail.com> wrote:

not that the ARRL is the final word on anything, but their take on it
can be found here:
http://www.arrl.org/news/tokyo-hy-power-files-for-bankruptcy

On 12/28/2013 8:57 AM, Dyarnes wrote:


Hi Again,
I just got an update from my friend Shin, JA1NUT. It is Tokyo Hy-Power
that went bankrupt. There was some uncertainty that it could be another
company with a similar name. Not so.
In any event, Shin says the debt turned out to be rather small—only
about 2.5M Yen, which is only about $25,000---much less than originally
thought. That’s rather small, so very possibly this could be dealt with
in some way other than going out of business. We just have to wait and
see. However, if the products just weren’t viable profit wise, nobody
may want to take it over.
Dave W7AQK
*From:* Joe Subich, W4TV <mailto:lists@subich.com>
*Sent:* Thursday, December 26, 2013 11:13 AM
*To:* Elecraft_K3@yahoogroups.com <mailto:Elecraft_K3@yahoogroups.com>
*Subject:* Re: [Elecraft_K3] RIP Tokyo High Power


Thanks. Following some of the Japanese language web pages through
Google Chrome ... "Clear Leaf Institute" is a Japanese business
publisher/researcher so the information is probably good. Tokyo
Hy-Power is, in fact located in Niiza, Saitama. There are a couple
other reports from Japanese amateurs "confirming" the information.

It does not look good although 250 million Yen is about 2.5 million
US dollars so, depending on their commercial business, it might be
suitable for acquisition by another company. I could also see Yaesu,
for example, picking up the solid state amplifier line since they
have nothing at the present.

73,

... Joe, W4TV
--

GB & 73
K5OAI
Sam Morgan


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

Yahoo Groups Links



DB-15 Y Cables for K3

Bill Axelrod <bill@...>
 

Just got a second K3 and am integrating it into my SO2R station.  Since a number of key functions come from the Aux jack which is a DB-15, I need to use some Y cables (splitters) to chain the aux connections together.  I thought it would be easy since all I wanted to do was replicate the exact arrangement I have for my first K3.  So I went out and bought some DB-15 Y cables.  Well, that didn't work for me. 

 

Not one of the five new Y cables work.  I can use my original set on either radio just fine but the new ones don't work anywhere.  None have any manufacture's name or part number on it.  Other local hams have since told me that they have experienced the same problem.

 

Anyone had a clue of where to buy DB-15 Y cables that work?  I can not remember where I got the ones I use on my first K3.

 

Thanks and 73...   Bill K3WA

 


Re: [Elecraft_K3] Err Key Message

Cary VE4EA
 

Thanks very much Bill.  

I think you are (were) onto something.
Now, at least, the ERR KEY message is gone and I can change bands on the radio.
(no more error message)

I did notice that both Mic Gain and Pwr (xmit) have been turned right down (Pwr - under 10w).  It looks like the K3 reset these levels themselves and I can't restore them to QRO levels.  

There is also an issue with the ATU.  It appears to be disabled.  
Tapping or holding down ATU brings up the message NO ATU. 
I get the same message (NO ATU) when trying to change antennas.  ie. the rig is "stuck" on ANT1.  Normally, it would switch automatically to ANT2.  (or I can tap the ANT button)

Is there some place in the manual where this is discussed?
Thanks again,
Cary

P.S. I just found ERR KEY in the manual (page 69).  There is a reference to CONFIG:PTT-KEY.  My PTT-KEY is set to OFF - OFF.


---In Elecraft_K3@{{emailDomain}}, <bconk75@...> wrote:

You have a stuck key.  One of a couple  things might cause it. 

VOX on and/or gain too high.
A key or paddle making contact when powering up the radio.

Jeep us posted.

...bill nr4c

On Dec 28, 2013 10:19 PM, <cary@...> wrote:
 

I was in the midst of contest operating (RAC) and murphy struck.  


I am receiving a message of ERR KEY on the LCD.  I can't seem to find any reference to this message in either the K3 manual or the Fred Kady book.  

Is there some way to clear this error condition?
I'd really like to know what I did to create the error (bad sequence of entries,etc.)

73 and Thanks,
Cary, VE4EA   (aka VE4RAC this weekend)


Re: [Elecraft_K3] P3 interface to K3

Mel Farrer <farrerfolks@...>
 

Yes, but not very clear..  I looked at the schematic and a friend said that if you toggle pin 2 of the cable from the K3 to the P3 it will do the same without pulling the plug.  A thought.

Mel, K6KBE



On Saturday, December 28, 2013 7:30 PM, william conkling wrote:
 
Its in the manual...
...bc. nr4c
On Dec 28, 2013 10:19 PM, <farrerfolks@...> wrote:
 
Interesting find.  While doing a upgrade of options in the K3 I stumbled on a "feature".

If you leave the RS232 connector off the K3 from the P3, the display will show the transmitted signal when the K3 is keyed.  Plugging in the RS232, it goes back to just received signals. 

So if you want to see your Tx signal just unplug the RS232.

Mel, K6KBE



Re: [Elecraft_K3] P3 interface to K3

william conkling <bconk75@...>
 

Its in the manual...

...bc. nr4c

On Dec 28, 2013 10:19 PM, <farrerfolks@...> wrote:
 

Interesting find.  While doing a upgrade of options in the K3 I stumbled on a "feature".

If you leave the RS232 connector off the K3 from the P3, the display will show the transmitted signal when the K3 is keyed.  Plugging in the RS232, it goes back to just received signals. 

So if you want to see your Tx signal just unplug the RS232.

Mel, K6KBE


Re: [Elecraft_K3] Err Key Message

william conkling <bconk75@...>
 

You have a stuck key.  One of a couple  things might cause it. 

VOX on and/or gain too high.
A key or paddle making contact when powering up the radio.

Jeep us posted.

...bill nr4c

On Dec 28, 2013 10:19 PM, <cary@...> wrote:
 

I was in the midst of contest operating (RAC) and murphy struck.  


I am receiving a message of ERR KEY on the LCD.  I can't seem to find any reference to this message in either the K3 manual or the Fred Kady book.  

Is there some way to clear this error condition?
I'd really like to know what I did to create the error (bad sequence of entries,etc.)

73 and Thanks,
Cary, VE4EA   (aka VE4RAC this weekend)


Err Key Message

Cary VE4EA
 

I was in the midst of contest operating (RAC) and murphy struck.  


I am receiving a message of ERR KEY on the LCD.  I can't seem to find any reference to this message in either the K3 manual or the Fred Kady book.  

Is there some way to clear this error condition?
I'd really like to know what I did to create the error (bad sequence of entries,etc.)

73 and Thanks,
Cary, VE4EA   (aka VE4RAC this weekend)


Re: [Elecraft_K3] RIP Tokyo High Power

Dale J. <dj2001x@...>
 

Thanks for the link Mike. Guess that makes it official.

73
Dale, K9VUJ

On 28, Dec 2013, at 14:10, mikerodgerske5gbc@yahoo.com wrote:



Link to arrl news.


http://www.arrl.org/news/tokyo-hy-power-files-for-bankruptcy


73
Mike R



Bluegrass white snow
- Patty Loveless

On Dec 28, 2013, at 8:57 AM, "Dyarnes" <w7aqk@cox.net> wrote:


Hi Again,

I just got an update from my friend Shin, JA1NUT. It is Tokyo Hy-Power that went bankrupt. There was some uncertainty that it could be another company with a similar name. Not so.

In any event, Shin says the debt turned out to be rather small—only about 2.5M Yen, which is only about $25,000---much less than originally thought. That’s rather small, so very possibly this could be dealt with in some way other than going out of business. We just have to wait and see. However, if the products just weren’t viable profit wise, nobody may want to take it over.

Dave W7AQK



From: Joe Subich, W4TV
Sent: Thursday, December 26, 2013 11:13 AM
To: Elecraft_K3@yahoogroups.com
Subject: Re: [Elecraft_K3] RIP Tokyo High Power



Thanks. Following some of the Japanese language web pages through
Google Chrome ... "Clear Leaf Institute" is a Japanese business
publisher/researcher so the information is probably good. Tokyo
Hy-Power is, in fact located in Niiza, Saitama. There are a couple
other reports from Japanese amateurs "confirming" the information.

It does not look good although 250 million Yen is about 2.5 million
US dollars so, depending on their commercial business, it might be
suitable for acquisition by another company. I could also see Yaesu,
for example, picking up the solid state amplifier line since they
have nothing at the present.

73,

... Joe, W4TV



.



Re: [Elecraft_K3] RIP Tokyo High Power

mikerodgerske5gbc
 

On Dec 28, 2013, at 2:10 PM, mikerodgerske5gbc@... wrote:

 

Link to arrl news. 




73
Mike R



Bluegrass white snow
      - Patty Loveless

On Dec 28, 2013, at 8:57 AM, "Dyarnes" <w7aqk@...> wrote:

 

Hi Again,
 
I just got an update from my friend Shin, JA1NUT.  It is Tokyo Hy-Power that went bankrupt.  There was some uncertainty that it could be another company with a similar name.  Not so.
 
In any event, Shin says the debt turned out to be rather small—only about 2.5M Yen, which is only about $25,000---much less than originally thought.  That’s rather small, so very possibly this could be dealt with in some way other than going out of business.  We just have to wait and see.  However, if the products just weren’t viable profit wise, nobody may want to take it over.
 
Dave W7AQK
 
 
 
Sent: Thursday, December 26, 2013 11:13 AM
Subject: Re: [Elecraft_K3] RIP Tokyo High Power
 
 


Thanks. Following some of the Japanese language web pages through
Google Chrome ... "Clear Leaf Institute" is a Japanese business
publisher/researcher so the information is probably good. Tokyo
Hy-Power is, in fact located in Niiza, Saitama. There are a couple
other reports from Japanese amateurs "confirming" the information.

It does not look good although 250 million Yen is about 2.5 million
US dollars so, depending on their commercial business, it might be
suitable for acquisition by another company. I could also see Yaesu,
for example, picking up the solid state amplifier line since they
have nothing at the present.

73,

... Joe, W4TV

 

.


Re: [Elecraft_K3] RIP Tokyo High Power

mikerodgerske5gbc
 

Link to arrl news. 




73
Mike R



Bluegrass white snow
      - Patty Loveless

On Dec 28, 2013, at 8:57 AM, "Dyarnes" <w7aqk@...> wrote:

 

Hi Again,
 
I just got an update from my friend Shin, JA1NUT.  It is Tokyo Hy-Power that went bankrupt.  There was some uncertainty that it could be another company with a similar name.  Not so.
 
In any event, Shin says the debt turned out to be rather small—only about 2.5M Yen, which is only about $25,000---much less than originally thought.  That’s rather small, so very possibly this could be dealt with in some way other than going out of business.  We just have to wait and see.  However, if the products just weren’t viable profit wise, nobody may want to take it over.
 
Dave W7AQK
 
 
 
Sent: Thursday, December 26, 2013 11:13 AM
Subject: Re: [Elecraft_K3] RIP Tokyo High Power
 
 


Thanks. Following some of the Japanese language web pages through
Google Chrome ... "Clear Leaf Institute" is a Japanese business
publisher/researcher so the information is probably good. Tokyo
Hy-Power is, in fact located in Niiza, Saitama. There are a couple
other reports from Japanese amateurs "confirming" the information.

It does not look good although 250 million Yen is about 2.5 million
US dollars so, depending on their commercial business, it might be
suitable for acquisition by another company. I could also see Yaesu,
for example, picking up the solid state amplifier line since they
have nothing at the present.

73,

... Joe, W4TV

 

.


P3 interface to K3

farrerfolks@...
 

Interesting find.  While doing a upgrade of options in the K3 I stumbled on a "feature".

If you leave the RS232 connector off the K3 from the P3, the display will show the transmitted signal when the K3 is keyed.  Plugging in the RS232, it goes back to just received signals. 

So if you want to see your Tx signal just unplug the RS232.

Mel, K6KBE


Re: [Elecraft_K3] RIP Tokyo High Power

Sam Morgan
 

not that the ARRL is the final word on anything, but their take on it can be found here:
http://www.arrl.org/news/tokyo-hy-power-files-for-bankruptcy

On 12/28/2013 8:57 AM, Dyarnes wrote:


Hi Again,
I just got an update from my friend Shin, JA1NUT. It is Tokyo Hy-Power
that went bankrupt. There was some uncertainty that it could be another
company with a similar name. Not so.
In any event, Shin says the debt turned out to be rather small—only
about 2.5M Yen, which is only about $25,000---much less than originally
thought. That’s rather small, so very possibly this could be dealt with
in some way other than going out of business. We just have to wait and
see. However, if the products just weren’t viable profit wise, nobody
may want to take it over.
Dave W7AQK
*From:* Joe Subich, W4TV <mailto:lists@subich.com>
*Sent:* Thursday, December 26, 2013 11:13 AM
*To:* Elecraft_K3@yahoogroups.com <mailto:Elecraft_K3@yahoogroups.com>
*Subject:* Re: [Elecraft_K3] RIP Tokyo High Power


Thanks. Following some of the Japanese language web pages through
Google Chrome ... "Clear Leaf Institute" is a Japanese business
publisher/researcher so the information is probably good. Tokyo
Hy-Power is, in fact located in Niiza, Saitama. There are a couple
other reports from Japanese amateurs "confirming" the information.

It does not look good although 250 million Yen is about 2.5 million
US dollars so, depending on their commercial business, it might be
suitable for acquisition by another company. I could also see Yaesu,
for example, picking up the solid state amplifier line since they
have nothing at the present.

73,

... Joe, W4TV
--

GB & 73
K5OAI
Sam Morgan


Re: [Elecraft_K3] RIP Tokyo High Power

w7aqk
 

Hi Again,
 
I just got an update from my friend Shin, JA1NUT.  It is Tokyo Hy-Power that went bankrupt.  There was some uncertainty that it could be another company with a similar name.  Not so.
 
In any event, Shin says the debt turned out to be rather small—only about 2.5M Yen, which is only about $25,000---much less than originally thought.  That’s rather small, so very possibly this could be dealt with in some way other than going out of business.  We just have to wait and see.  However, if the products just weren’t viable profit wise, nobody may want to take it over.
 
Dave W7AQK
 
 
 

Sent: Thursday, December 26, 2013 11:13 AM
Subject: Re: [Elecraft_K3] RIP Tokyo High Power
 
 


Thanks. Following some of the Japanese language web pages through
Google Chrome ... "Clear Leaf Institute" is a Japanese business
publisher/researcher so the information is probably good. Tokyo
Hy-Power is, in fact located in Niiza, Saitama. There are a couple
other reports from Japanese amateurs "confirming" the information.

It does not look good although 250 million Yen is about 2.5 million
US dollars so, depending on their commercial business, it might be
suitable for acquisition by another company. I could also see Yaesu,
for example, picking up the solid state amplifier line since they
have nothing at the present.

73,

... Joe, W4TV

 

.


Re: [Elecraft_K3] RE: microKEYER II & Elecraft K3

Joe Subich, W4TV
 

On 12/28/2013 8:56 AM, George Danner wrote:
Joe � if it is not a �Ground Loop� what is it?
As I wrote before, it is an insufficient power supply return in the
transceiver. "Ground loops" have nothing to do with "grounds" this
the result of failing to properly size power connections and isolate
power and signal returns.

In the 50s we solved the issues with balanced audio & infinite
impedance shield connections.
That's great if the amateur transceivers provided *balanced* audio
inputs and true phantom power (center tap to the input transformer)
but they don't do it. Worse yet, they use electret mics with a DC
return to the chassis and not the (separate) mic return in many
cases.

73,

... Joe, W4TV


On 12/28/2013 8:56 AM, George Danner wrote:
Joe � if it is not a �Ground Loop� what is it?
High impedance (greater than 0.000... ohms) in the ground (DC return) system is a ground loop by definition when it causes a problem!
See http://en.wikipedia.org/wiki/Ground_loop_(electricity).
In the 50s we solved the issues with balanced audio & infinite impedance shield connections. I know because my first studio maintenance job in AM radio was converting the studios from unbalanced to balanced audio.

Unless you are flying a tail dragger � then it can be a bit exciting not just a little hum & noise. Done to the extreme, the whole world turns upside down!

73 George AI4VZ

From: Joe Subich, W4TV

somwhere in the microphone line ia a ground lopp which causes this
problem.
It is not a "ground loop" in the microKEYER II. It is a poor power
supply return in the K3.

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