[Elecraft] [K3} CW in SSB - no manual PTT?

Discussion:

Ian White

2013-05-09 09:43:33 UTC

When using the "CW in SSB" feature [1] my K3 will transmit CW using semi
or full breakin, but not when using manual PTT. The footswitch and the
XMIT button will switch the K3 into transmit, but then the CW keying is
blocked.

Is this a configuration error on my part, or a firmware bug?

[1] In CONFIG - CW WGHT, tap 1 for SSB + CW (allows CW in SSB modes).
The problem is independent of other options within this menu. It has
also been around for a long time.

73 from Ian GM3SEK

Pierfrancesco Caci

2013-05-09 11:58:12 UTC

Permalink

Ian> When using the "CW in SSB" feature [1] my K3 will transmit CW using semi
Ian> or full breakin, but not when using manual PTT. The footswitch and the
Ian> XMIT button will switch the K3 into transmit, but then the CW keying is
Ian> blocked.

Ian> Is this a configuration error on my part, or a firmware bug?

wouldn't you get microphone audio mixed with the CW tone if you'd allow
PTT to work?

--
Pierfrancesco Caci, ik5pvx

Ian White

2013-05-09 13:10:26 UTC

Permalink

Microphone muting is not a problem. When SSB VOX and CW VOX are both
enabled, we can hear the CW-in-SSB logic working correctly: whichever
mode of transmission is triggered first, that mode "wins" and input for
the other mode remains muted until the VOX drops out.

The problem specifically involves the use of manual PTT (microphone
button, XMIT button or foot switch) which completely blocks the CW
input.

73 from Ian GM3SEK

-----Original Message-----
From: Pierfrancesco Caci [mailto:pf at tippete.net]
Sent: 09 May 2013 12:58
To: Ian White
Cc: elecraft at mailman.qth.net
Subject: Re: [Elecraft] [K3} CW in SSB - no manual PTT?
Ian> When using the "CW in SSB" feature [1] my K3 will transmit CW

using

semi
Ian> or full breakin, but not when using manual PTT. The footswitch

and

the
Ian> XMIT button will switch the K3 into transmit, but then the CW

keying

is
Ian> blocked.
Ian> Is this a configuration error on my part, or a firmware bug?
wouldn't you get microphone audio mixed with the CW tone if you'd allow
PTT to work?
--
Pierfrancesco Caci, ik5pvx

iain macdonnell - N6ML

2013-05-09 13:43:09 UTC

Permalink

Hi Ian,

What you describe is how I understand it's supposed to work. If you
assert PTT in SSB mode, it's assumed that you want to transmit SSB.
The firmware has no way of distinguishing "SSB PTT" from "CW PTT".

73,

~iain / N6ML

Post by Ian White
Microphone muting is not a problem. When SSB VOX and CW VOX are both
enabled, we can hear the CW-in-SSB logic working correctly: whichever
mode of transmission is triggered first, that mode "wins" and input for
the other mode remains muted until the VOX drops out.
The problem specifically involves the use of manual PTT (microphone
button, XMIT button or foot switch) which completely blocks the CW
input.
73 from Ian GM3SEK

using

semi
Ian> or full breakin, but not when using manual PTT. The footswitch

and

the
Ian> XMIT button will switch the K3 into transmit, but then the CW

keying

is
Ian> blocked.
Ian> Is this a configuration error on my part, or a firmware bug?
wouldn't you get microphone audio mixed with the CW tone if you'd allow
PTT to work?
--
Pierfrancesco Caci, ik5pvx

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Ian White

2013-05-09 14:45:17 UTC

Permalink

Post by iain macdonnell - N6ML
The firmware has no way of distinguishing "SSB PTT" from "CW PTT".

Correct - but (key_down .and. PTT) is unambiguous.

73 from Ian GM3SEK

Post by iain macdonnell - N6ML
-----Original Message-----
From: dseven at dseven.org [mailto:dseven at dseven.org] On Behalf Of iain
macdonnell - N6ML
Sent: 09 May 2013 14:43
To: Ian White
Cc: Pierfrancesco Caci; elecraft at mailman.qth.net
Subject: Re: [Elecraft] [K3} CW in SSB - no manual PTT?
Hi Ian,
What you describe is how I understand it's supposed to work. If you

assert

Post by iain macdonnell - N6ML
PTT in SSB mode, it's assumed that you want to transmit SSB.
The firmware has no way of distinguishing "SSB PTT" from "CW PTT".
73,
~iain / N6ML

Post by Ian White
Microphone muting is not a problem. When SSB VOX and CW VOX are

both

Post by Ian White
enabled, we can hear the CW-in-SSB logic working correctly: whichever
mode of transmission is triggered first, that mode "wins" and input
for the other mode remains muted until the VOX drops out.
The problem specifically involves the use of manual PTT (microphone
button, XMIT button or foot switch) which completely blocks the CW
input.
73 from Ian GM3SEK

using

semi
Ian> or full breakin, but not when using manual PTT. The
footswitch

and

the
Ian> XMIT button will switch the K3 into transmit, but then the CW

keying

is
Ian> blocked.
Ian> Is this a configuration error on my part, or a firmware bug?
wouldn't you get microphone audio mixed with the CW tone if you'd
allow PTT to work?
--
Pierfrancesco Caci, ik5pvx

Post by iain macdonnell - N6ML

Post by Ian White
list: http://www.qsl.net/donate.html

iain macdonnell - N6ML

2013-05-09 15:55:32 UTC

Permalink

Post by Ian White

Post by iain macdonnell - N6ML
The firmware has no way of distinguishing "SSB PTT" from "CW PTT".

Correct - but (key_down .and. PTT) is unambiguous.

Keyers will generally assert PTT slightly *before* CW keying, so amps,
etc, can be turned on.

73.

~iain / N6ML

Post by Ian White

assert

Post by iain macdonnell - N6ML
PTT in SSB mode, it's assumed that you want to transmit SSB.
The firmware has no way of distinguishing "SSB PTT" from "CW PTT".
73,
~iain / N6ML

Post by Ian White
Microphone muting is not a problem. When SSB VOX and CW VOX are

both

Post by iain macdonnell - N6ML

Post by Ian White
using

semi
Ian> or full breakin, but not when using manual PTT. The
footswitch

and

the
Ian> XMIT button will switch the K3 into transmit, but then the

Post by iain macdonnell - N6ML

Post by Ian White
keying

is
Ian> blocked.
Ian> Is this a configuration error on my part, or a firmware bug?
wouldn't you get microphone audio mixed with the CW tone if you'd
allow PTT to work?
--
Pierfrancesco Caci, ik5pvx

Post by iain macdonnell - N6ML

Post by Ian White
list: http://www.qsl.net/donate.html

Joe Subich, W4TV

2013-05-09 16:28:23 UTC

Permalink

Post by Ian White
Is this a configuration error on my part, or a firmware bug?

Neither - it is a feature. Activating PTT activate SSB mode when in
SSB.

73,

... Joe, W4TV

Post by Ian White
When using the "CW in SSB" feature [1] my K3 will transmit CW using semi
or full breakin, but not when using manual PTT. The footswitch and the
XMIT button will switch the K3 into transmit, but then the CW keying is
blocked.
Is this a configuration error on my part, or a firmware bug?
[1] In CONFIG - CW WGHT, tap 1 for SSB + CW (allows CW in SSB modes).
The problem is independent of other options within this menu. It has
also been around for a long time.
73 from Ian GM3SEK
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft at mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html