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K3S USB intermittently disconnects when transmitting

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Jerry Moore

K3S USB intermittently disconnects when transmitting

I've checked the connections and can't seem to find anything to explain why
the USB disconnects from my PC when transmitting. It's not consistent.
Ideas?

Jerry Moore
CDXA, INDEXA, SKCC, Fists
AE4PB, K3S - S.N. 010324
http://www.qrz.com/db/AE4PB
An Amateur is - Considerate, Loyal, Progressive, Friendly, Balanced, and
Patriotic.

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Bob McGraw - K4TAX

Re: K3S USB intermittently disconnects when transmitting

Put a clamp-on ferrite with a turn or two through it and locate it at
the USB port at the computer. Mine did that too, but only when using
the amp on 160M. I figure it was a bit of RF being picked up on the cable.

73
Bob, K4TAX
K3S s/n 10163

On 1/20/2016 7:44 AM, Jerry Moore wrote:

> I've checked the connections and can't seem to find anything to explain why
> the USB disconnects from my PC when transmitting. It's not consistent.
> Ideas?
>
>
>
> Jerry Moore
> CDXA, INDEXA, SKCC, Fists
> AE4PB, K3S - S.N. 010324
> http://www.qrz.com/db/AE4PB
> An Amateur is - Considerate, Loyal, Progressive, Friendly, Balanced, and
> Patriotic.
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

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Jim AB3CV

Re: K3S USB intermittently disconnects when transmitting

In reply to this post by Jerry Moore

Hi Jerry

RF in the shack? Describe your antenna, feedline, distance and choking and
maybe some of us can help.

73

jim ab3cv

On Wed, Jan 20, 2016 at 8:44 AM, Jerry Moore <[hidden email]> wrote:

Jerry Moore

Re: K3S USB intermittently disconnects when transmitting

I first experienced this in a different room using a Buckmaster dipole at 35’. Issue occurred with 100w and with 40w, Only seems to happen with CW. I have been able to reproduce the error sometimes in test mode so no RF goes out (I’m currently attending CW Academy).

I’ve changed offices and now use a 20m hamstick.

I only intermittently have the issue when sending CW in test OR transmitting.

Jerry Moore

CDXA, INDEXA, SKCC, Fists

AE4PB, K3S - S.N. 010324

http://www.qrz.com/db/AE4PB

An Amateur is - Considerate, Loyal, Progressive, Friendly, Balanced, and Patriotic.

From: [hidden email] [mailto:[hidden email]] On Behalf Of Jim Miller
Sent: Wednesday, January 20, 2016 9:07 AM
To: Jerry Moore
Cc: Elecraft Reflector
Subject: Re: [Elecraft] K3S USB intermittently disconnects when transmitting

Hi Jerry

RF in the shack? Describe your antenna, feedline, distance and choking and maybe some of us can help.

73

jim ab3cv

On Wed, Jan 20, 2016 at 8:44 AM, Jerry Moore <[hidden email]> wrote:

I've checked the connections and can't seem to find anything to explain why
the USB disconnects from my PC when transmitting. It's not consistent.
Ideas?

Jerry Moore
CDXA, INDEXA, SKCC, Fists
AE4PB, K3S - S.N. 010324
http://www.qrz.com/db/AE4PB
An Amateur is - Considerate, Loyal, Progressive, Friendly, Balanced, and
Patriotic.

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Guy Olinger K2AV

Re: K3S USB intermittently disconnects when transmitting

RF in the shack and/or voltage between equipment cases. Very easily can
come from handful of separate causes which will all need to be
fixed. Numerous causes.

No common bond for cases in shack. Problem with grounding. Lack of common
entry ground where cables come into dwelling. Antenna is very close and
cables in shack need ferrite. Insecure connection in connector wiring. Ad
nauseum.

Time to clean up and get proper. Read K9YC's treatise for pin one problems.

Welcome to an old club with many members.

73, Guy K2AV

On Wednesday, January 20, 2016, Jerry Moore <[hidden email]> wrote:

> I first experienced this in a different room using a Buckmaster dipole at
> 35’. Issue occurred with 100w and with 40w, Only seems to happen with CW. I
> have been able to reproduce the error sometimes in test mode so no RF goes
> out (I’m currently attending CW Academy).
>
> I’ve changed offices and now use a 20m hamstick.
>
>
>
> I only intermittently have the issue when sending CW in test OR
> transmitting.
>
>
>
> Jerry Moore
>
> CDXA, INDEXA, SKCC, Fists
>
> AE4PB, K3S - S.N. 010324
>
> http://www.qrz.com/db/AE4PB
>
> An Amateur is - Considerate, Loyal, Progressive, Friendly, Balanced, and
> Patriotic.
>
>
>
> From: [hidden email] <javascript:;> [mailto:[hidden email]
> <javascript:;>] On Behalf Of Jim Miller
> Sent: Wednesday, January 20, 2016 9:07 AM
> To: Jerry Moore
> Cc: Elecraft Reflector
> Subject: Re: [Elecraft] K3S USB intermittently disconnects when
> transmitting
>
>
>
> Hi Jerry
>
>
>
> RF in the shack? Describe your antenna, feedline, distance and choking and
> maybe some of us can help.
>
>
>
> 73
>
>
>
> jim ab3cv
>
>
>
> On Wed, Jan 20, 2016 at 8:44 AM, Jerry Moore <[hidden email]
> <javascript:;>> wrote:
>
> I've checked the connections and can't seem to find anything to explain why
> the USB disconnects from my PC when transmitting. It's not consistent.
> Ideas?
>
>
>
> Jerry Moore
> CDXA, INDEXA, SKCC, Fists
> AE4PB, K3S - S.N. 010324
> http://www.qrz.com/db/AE4PB
> An Amateur is - Considerate, Loyal, Progressive, Friendly, Balanced, and
> Patriotic.
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email] <javascript:;>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email] <javascript:;>
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email] <javascript:;>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email] <javascript:;>

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