Elecraft

Key-Out of the K3

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Dave, G4AON

Key-Out of the K3

Lee

From the key out line on the K3 going low, RF appears just a shade over
10 mS later. You need a linear that can accept RF in that time.

73 Dave, G4AON
K3/100 #80 and Acom 1000 linear.
http://www.astromag.co.uk/k3/
=====================================
I would like a clarification of this feature from the users and what
users have found in "real-life."

Lee Buller
K0WA
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n6wg

Re: Key-Out of the K3

Is there any adjustment to this delay?
I think the K2's delay is a bit longer,
for example.
73, Bob N6WG

----- Original Message -----
From: "Dave G4AON" <[hidden email]>
To: <[hidden email]>
Sent: Tuesday, February 05, 2008 11:28 AM
Subject: [Elecraft] Key-Out of the K3

> Lee
>
> From the key out line on the K3 going low, RF appears just a shade
over

> 10 mS later. You need a linear that can accept RF in that time.
>
> 73 Dave, G4AON
> K3/100 #80 and Acom 1000 linear.
> http://www.astromag.co.uk/k3/
> =====================================
> I would like a clarification of this feature from the users and what
> users have found in "real-life."
>
> Lee Buller
> K0WA
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
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David Pratt-2

Re: Key-Out of the K3

In a recent message, Robert Tellefsen <[hidden email]> wrote ...
>Is there any adjustment to this delay?
>I think the K2's delay is a bit longer,
>for example.

I agree there, Bob. Using the K3 with the XV144 on CW, the XV relays
clatter with every dot and dash which did not happen with the K2. I am
a bit worried that it can't be doing the XV144 relays much good.

73
--
David G4DMP
Leeds, England, UK
------

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Mike Harris-9

Re: Key-Out of the K3

G'day,

| In a recent message, Robert Tellefsen <[hidden email]> wrote ...
| >Is there any adjustment to this delay?
| >I think the K2's delay is a bit longer,
| >for example.
|
| I agree there, Bob. Using the K3 with the XV144 on CW, the XV relays
| clatter with every dot and dash which did not happen with the K2. I am
| a bit worried that it can't be doing the XV144 relays much good.

Correct me if I'm wrong but aren't we mixing up two delays here?
Currently there isn't an adjustable "PTT on/carrier up" delay on the K3,
this is the same for the K2, approx 10ms if I remember correctly. But did
I not read that in semi break-in with the K3 you can adjust the release
delay. That should stop the relays rattling.

In fact, I did this on my K2 (QSK delay) to reduce the fast vacuum relay
activity on my Acom amp. Changed the t-r delay to 0.03 seconds. I don't
want to listen to noise between the dots.

There again I could be barking up the wrong tree.

Regards,

Mike VP8NO

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n6wg

Re: Key-Out of the K3

Yes, Mike, you are right about the release delay.
Done the same thing here with my K2.
I think the original question addressed the "PTT on/carrier up" delay
though. It sounds like that has a fixed delay of about 10ms at
present.
73, Bob N6WG

----- Original Message -----
From: "Mike Harris" <[hidden email]>
To: "Elecraft Reflector" <[hidden email]>; "David Pratt"
<[hidden email]>
Sent: Wednesday, February 06, 2008 2:29 PM
Subject: Re: [Elecraft] Key-Out of the K3

> G'day,
>
> | In a recent message, Robert Tellefsen <[hidden email]> wrote ...
> | >Is there any adjustment to this delay?
> | >I think the K2's delay is a bit longer,
> | >for example.
> |
> | I agree there, Bob. Using the K3 with the XV144 on CW, the XV
relays
> | clatter with every dot and dash which did not happen with the K2.
I am
> | a bit worried that it can't be doing the XV144 relays much good.
>
> Correct me if I'm wrong but aren't we mixing up two delays here?
> Currently there isn't an adjustable "PTT on/carrier up" delay on the
K3,
> this is the same for the K2, approx 10ms if I remember correctly.
But did
> I not read that in semi break-in with the K3 you can adjust the
release
> delay. That should stop the relays rattling.
>
> In fact, I did this on my K2 (QSK delay) to reduce the fast vacuum
relay
> activity on my Acom amp. Changed the t-r delay to 0.03 seconds. I
don't

> want to listen to noise between the dots.
>
> There again I could be barking up the wrong tree.
>
> Regards,
>
> Mike VP8NO
>
>
> _______________________________________________
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David Pratt-2

Re: Key-Out of the K3

In reply to this post by Mike Harris-9

I have tried semi-QSK, Mike, but still get the XV144 relay clatter at
speeds less than about 24wpm. I can't find in the manual which config
command I need to change the release delay. Can you point me to it
please? I would like to stop the XV144 relays switching between Morse
elements at 18-20wpm.

73

David G4DMP

In a recent message, Mike Harris <[hidden email]> wrote ...

>
>| I agree there, Bob. Using the K3 with the XV144 on CW, the XV relays
>| clatter with every dot and dash which did not happen with the K2. I am
>| a bit worried that it can't be doing the XV144 relays much good.
>
>Correct me if I'm wrong but aren't we mixing up two delays here?
>Currently there isn't an adjustable "PTT on/carrier up" delay on the K3,
>this is the same for the K2, approx 10ms if I remember correctly. But did
>I not read that in semi break-in with the K3 you can adjust the release
>delay. That should stop the relays rattling.

--
David G4DMP
Leeds, England, UK
------

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N5GE

Re: Key-Out of the K3

On Wed, 6 Feb 2008 23:07:38 +0000, you wrote:

>I have tried semi-QSK, Mike, but still get the XV144 relay clatter at
>speeds less than about 24wpm. I can't find in the manual which config
>command I need to change the release delay. Can you point me to it
>please? I would like to stop the XV144 relays switching between Morse
>elements at 18-20wpm.
>
>73
>
>David G4DMP

Have you looked on page 15 of the Owner's Manual (Rev D, April 11, 2007) under
"Transmit-Receive Switching Delay". Is that helpful to you?

Tom, N5GE - SWOT 3537 - Grid EM12jq

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Amateur Radio Operator N5GE