Elecraft

K3 PTT -- done!

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Ed Muns, W0YK

RE: K3 PTT -- done!

> That is great! I am amazed at how quickly the idea was
> accepted, implemented and tested considering the fact that
> Elecraft is concentrating on getting the FCS out the door.
> Probably another example of feature creep, but one that is
> much appreciated.

Well, I've been campaigning for this during field test for two months now.
Many of our field testers prefer to use QSK and/or SEMI break-in all the
time on CW and don't see a need for PTT-only CW transmission control.
Thanks to you and others speaking up, it is clear that this standard feature
on all radios is really being used by a number of operators. I wouldn't
call it feature creep, but rather a basic feature that should be in every
radio.

73,
Ed - W0YK

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Tom Hammond-2

Re: K3 PTT -- done!

In reply to this post by Vic K2VCO

Hi Vic:

You didn't mention it, but I'm assuming that this is with QSK and
SEMI-QSK NOT invoked, right?

Haven't loaded the latest firmware release... busy yesterday... will
do so though.

73,

Tom

At 22:15 09/24/2007, Vic K2VCO wrote:

>I just loaded Wayne's latest K3 firmware, and (in addition to other
>neat stuff), there is a new PTT mode for CW which does this:
>
>1) When PTT is open, hitting the key gives you sidetone but no RF.
>
>2) When PTT is closed, you go into TX mode for as long as it's
>closed. Hitting the key then makes sidetone and RF.
>
>This is in addition to the regular semi- and full-QSK modes. AND, if
>you are in semi- or full-QSK mode, closing PTT still puts you in transmit mode.
>
>One day from "clamor on reflector" to beta testing!
>--
>73,
>Vic, K2VCO
>Fresno CA
>http://www.qsl.net/k2vco
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Tom Hammond-2

Re: K3 PTT -- done!

In reply to this post by Vic K2VCO

Hi Vic:

DISREGARD - Just re-read the bottom of your previous message... sorry.

Tom

_________ I errantly wrote _________

You didn't mention it, but I'm assuming that this is with QSK and
SEMI-QSK NOT invoked, right?

Haven't loaded the latest firmware release... busy yesterday... will
do so though.

73,

Tom

At 22:15 09/24/2007, Vic K2VCO wrote:

Tom Hammond-2

Re: K3 PTT -- done!

In reply to this post by Don Wilhelm-4

Hi Don, et al:

>Since no one has explained the difference between 'Transmit mode'
>and "the K3 is now transmitting since QSK has been started with a
>keypress" - I would believe that the PTT input is redundant when in
>QSK or Semi-break-in modes.

Actually, it' might not all that redundant, since there ARE times
when, even in QSK,
you might NOT want to allow the rig to return immediately to RX...
WHILE SENDING...
for instance when you're in the middle of a transmission and someone
(not the guy
you're sending to) REALLY LOAD comes on the same freq. You might not
want to hear
the QRM from the other station (which your guy might well not be able
to hear due to
prop.) until you complete whatever it is you're sending (since it'd
just ass the the
confusion). Just hit the foot switch (connected to PTT) and you'll
mute the RX until
you let up on the footswitch.

>Yes, a little clarification (or language lessons) seem to be appropriate here.
>How is 'Transmit mode' different from 'transmitting already because
>the key was tapped'?
>Does closing PTT when in QSK mode inhibit a return to receive until
>the PTT is released? - that is the only thing I can think of.

My guess it that yes, it will inhibit auto-return to RX upon key release.

>It certainly seems that the generation of RF is controlled by the
>paddles in any case (except for the new TX inhibit condition). A
>few things were clarified, but confusion still reigns high in my mind.

73,

Tom N0SS

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Bill VanAlstyne W5WVO

Re: K3 PTT -- done!

Tom Hammond wrote:

> Actually, it' might not all that redundant, since there ARE times when, even
> in QSK, you might NOT want to allow the rig to return immediately to RX...
> WHILE SENDING... for instance when you're in the middle of a transmission
> and someone
> (not the guy you're sending to) REALLY LOUD comes on the same freq. You
> might not want to hear the QRM from the other station (which your guy might
> well not be able to hear due to prop.) until you complete whatever it is
> you're sending...
> Just hit the foot switch (connected to PTT) and you'll mute the RX until you
> let up on the footswitch.

The scenario you articulate here is EXACTLY why many CW contesters prefer PTT
on CW. Listening to all the QRM while you're transmitting, and having to focus
on your own sending while doing so, gets exhausting after a while, and when
you get mentally exhausted, errors ensue.

This is the way virtually all IKenSu transceivers work today. In other words,
PTT has priority. It's as simple as that. Pressing PTT puts the rig into TX
state, muting the RX, until it is released. Doesn't matter if you're doing QSK
or semi-QSK. Hitting the foot switch overrides that functionality instantly
for as long as it's held down (but no longer).

I don't think this is quite what the Elecraft implementation does, as it
sounds like you have to actually be in "PTT mode" by manual operator setting
in order for PTT to put the rig into the CW TX state. This is probably fine,
as most ops will either prefer to use PTT CW or one of the other modes, and
won't feel the need to be able to override in QSK or semi-QSK modes. But the
"override" method is how most rigs work today, at least the ones I've used.

Bill W5WVO

>
>> Yes, a little clarification (or language lessons) seem to be
>> appropriate here. How is 'Transmit mode' different from
>> 'transmitting already because the key was tapped'?
>> Does closing PTT when in QSK mode inhibit a return to receive until
>> the PTT is released? - that is the only thing I can think of.
>
> My guess it that yes, it will inhibit auto-return to RX upon key
> release.
>> It certainly seems that the generation of RF is controlled by the
>> paddles in any case (except for the new TX inhibit condition). A
>> few things were clarified, but confusion still reigns high in my
>> mind.
>
> 73,
>
> Tom N0SS
>
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Thom LaCosta

Re: K3 PTT -- done!

On Tue, 25 Sep 2007, Bill W5WVO wrote:

> Tom Hammond wrote:
>> Just hit the foot switch (connected to PTT) and you'll mute the RX until
>> you let up on the footswitch.

Would the same apply to SSB or AM operation for the "monologists" in the crowd?

73 - l3hrn

Thom,EIEIO
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.hank.

Re: K3 PTT -- done!

In reply to this post by Bill VanAlstyne W5WVO

Bill W5WVO wrote:

> Tom Hammond wrote:
>> Actually, it' might not all that redundant, since there ARE times
>> when, even in QSK, you might NOT want to allow the rig to return
>> immediately to RX... WHILE SENDING... for instance when you're in the
>> middle of a transmission and someone
>> (not the guy you're sending to) REALLY LOUD comes on the same freq.
>> You might not want to hear the QRM from the other station (which your
>> guy might well not be able to hear due to prop.) until you complete
>> whatever it is you're sending...
>> Just hit the foot switch (connected to PTT) and you'll mute the RX
>> until you let up on the footswitch.
>
> The scenario you articulate here is EXACTLY why many CW contesters
> prefer PTT on CW.

That is one reason ..... The other is when a slower station responds to
a CQ or QRZ the considerate
op (even in a 100++ rate situation) will slow down to their speed (at
least I do) and PTT will keep the
amp relay from dropping between words or characters.

73 Hank K8DD

--
---
If God intended you to be on single sideband,
he would have given you only one nostril.
- Steve, K2PTS (SK)
---

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Ed Muns, W0YK

RE: K3 PTT -- done!

In reply to this post by Bill VanAlstyne W5WVO

> This is the way virtually all IKenSu transceivers work today.
> In other words, PTT has priority. It's as simple as that.
> Pressing PTT puts the rig into TX state, muting the RX, until
> it is released. Doesn't matter if you're doing QSK or
> semi-QSK. Hitting the foot switch overrides that
> functionality instantly for as long as it's held down (but no longer).

This is exactly how PTT interacts with QSK and SEMI break-in when the latter
two are enabled. When they are DIS-enabled, then PTT has 100% priority to
put the K3 in transmit state and remove it from transmit state, i.e., return
to receive state.

> I don't think this is quite what the Elecraft implementation
> does, as it sounds like you have to actually be in "PTT mode"
> by manual operator setting in order for PTT to put the rig
> into the CW TX state.

As explained above, the K3 does BOTH.

73,
Ed - W0YK

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