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FW: P3 and K3 RS-232 baud rates

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Chester Alderman

FW: P3 and K3 RS-232 baud rates

On page 13 of the P3 Owner's Manual, in the section 'RS232 XCVR', the last
sentence states: "The K3 baud rate is set automatically by the P3 and cannot
be changed at the K3" Based on that, is it correct that if I set the P3 baud
rate to 4800 b, then the K3 will be operating at 4800 b even though
CONFIG:RS232 reads 38400b?

Thanks,

Tom - W4BQF

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Tommy Alderman
Sent: Tuesday, September 14, 2010 6:12 PM
To: [hidden email]
Subject: [Elecraft] P3 and K3 RS-232 baud rates

P3: s/n 464 Firmware 00.32 Rcvd 9/14/10
K3: s/n 4521 Firmware 4.10 Rcvd 8/2/10
I have an old logging program that I do not want to lose or have to change.
My first problem, because this program is so old (YPlog) was solved by
selecting a Kenwood TS570D as the xcvr and setting the baud rate at 4800/1
stop bit. That works fine.

Today, W4TV published an email explaining how to reset the P3 baud rate from
its default of 38,400 back to 4800. That works. Unfortunately CONFIG:RS232,
when I change the baud rate from 38400 to 4800 and press MENU/CONFIG again,
the baud rate change is not saved in the K3 and I can no longer connect to
my logging program. The only work-around I have found so far is to turn off
the P3, set the K3 CONFIG:RS232 from 38400 to 4800, then press MENU/CONFIG,
then turn the P3 ON again, and all works correct.

Will there be a firmware update that will allow the P3 and the K3 to be set
at baud rates other than 38400 when BOTH the K3 and the P3 are turned on? I
certainly hope so because this YPlog is the only logging program I have
found in some 20 years that will allow me to send CW at speeds over 60 wpm
without the CW stuttering due to I/O interrupts from a CPU.

Thanks and 73,

Tom - W4BQF

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ATT00007.txt (332 bytes) Download Attachment

Dick Dievendorff

Re: FW: P3 and K3 RS-232 baud rates

The K3 operates at 38400 if a P3 is inline. The PC sees the P3's speed, which can be 4800 thru 38400. Your PC software that requires any particular speed is therefore supported. The P3 to K3 link is a high speed one for low latency.

Dick, K6KR

Sent from my iPhone

On Sep 14, 2010, at 5:07 PM, "Tommy Alderman" <[hidden email]> wrote:

> On page 13 of the P3 Owner's Manual, in the section 'RS232 XCVR', the last
> sentence states: "The K3 baud rate is set automatically by the P3 and cannot
> be changed at the K3" Based on that, is it correct that if I set the P3 baud
> rate to 4800 b, then the K3 will be operating at 4800 b even though
> CONFIG:RS232 reads 38400b?
>
> Thanks,
>
> Tom - W4BQF
>
>
> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of Tommy Alderman
> Sent: Tuesday, September 14, 2010 6:12 PM
> To: [hidden email]
> Subject: [Elecraft] P3 and K3 RS-232 baud rates
>
> P3: s/n 464 Firmware 00.32 Rcvd 9/14/10
> K3: s/n 4521 Firmware 4.10 Rcvd 8/2/10
> I have an old logging program that I do not want to lose or have to change.
> My first problem, because this program is so old (YPlog) was solved by
> selecting a Kenwood TS570D as the xcvr and setting the baud rate at 4800/1
> stop bit. That works fine.
>
> Today, W4TV published an email explaining how to reset the P3 baud rate from
> its default of 38,400 back to 4800. That works. Unfortunately CONFIG:RS232,
> when I change the baud rate from 38400 to 4800 and press MENU/CONFIG again,
> the baud rate change is not saved in the K3 and I can no longer connect to
> my logging program. The only work-around I have found so far is to turn off
> the P3, set the K3 CONFIG:RS232 from 38400 to 4800, then press MENU/CONFIG,
> then turn the P3 ON again, and all works correct.
>
> Will there be a firmware update that will allow the P3 and the K3 to be set
> at baud rates other than 38400 when BOTH the K3 and the P3 are turned on? I
> certainly hope so because this YPlog is the only logging program I have
> found in some 20 years that will allow me to send CW at speeds over 60 wpm
> without the CW stuttering due to I/O interrupts from a CPU.
>
> Thanks and 73,
>
> Tom - W4BQF
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
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> Please help support this email list: http://www.qsl.net/donate.html
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> Post: mailto:[hidden email]
>
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> Please help support this email list: http://www.qsl.net/donate.html

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Alan Bloom-2

Re: FW: P3 and K3 RS-232 baud rates

In reply to this post by Chester Alderman

When the P3 is in line, the baud rate that the logging program sees is
that of the P3, not the K3. If the logging program wants 4800 baud,
that needs to be set on the P3.

One way to look at it is that the P3 is "pretending" to be the K3. The
logging program thinks it is talking to the K3 at 4800 baud. The P3
takes that data 4800-baud and re-sends it to the K3 at 38400 baud.

Alan N1AL

On Tue, 2010-09-14 at 20:07 -0400, Tommy Alderman wrote:

Don Wilhelm-4

Re: FW: P3 and K3 RS-232 baud rates

In reply to this post by Dick Dievendorff

In other words, set the speed on the P3, not the K3.

73,
Don W3FPR

On 9/14/2010 8:18 PM, Dick Dievendorff wrote:

> The K3 operates at 38400 if a P3 is inline. The PC sees the P3's speed, which can be 4800 thru 38400. Your PC software that requires any particular speed is therefore supported. The P3 to K3 link is a high speed one for low latency.
>
> Dick, K6KR
>
>
> Sent from my iPhone
>
> On Sep 14, 2010, at 5:07 PM, "Tommy Alderman"<[hidden email]> wrote:
>
>> On page 13 of the P3 Owner's Manual, in the section 'RS232 XCVR', the last
>> sentence states: "The K3 baud rate is set automatically by the P3 and cannot
>> be changed at the K3" Based on that, is it correct that if I set the P3 baud
>> rate to 4800 b, then the K3 will be operating at 4800 b even though
>> CONFIG:RS232 reads 38400b?
>>
>> Thanks,
>>
>> Tom - W4BQF
>>
>>
>> -----Original Message-----
>> From: [hidden email]
>> [mailto:[hidden email]] On Behalf Of Tommy Alderman
>> Sent: Tuesday, September 14, 2010 6:12 PM
>> To: [hidden email]
>> Subject: [Elecraft] P3 and K3 RS-232 baud rates
>>
>> P3: s/n 464 Firmware 00.32 Rcvd 9/14/10
>> K3: s/n 4521 Firmware 4.10 Rcvd 8/2/10
>> I have an old logging program that I do not want to lose or have to change.
>> My first problem, because this program is so old (YPlog) was solved by
>> selecting a Kenwood TS570D as the xcvr and setting the baud rate at 4800/1
>> stop bit. That works fine.
>>
>> Today, W4TV published an email explaining how to reset the P3 baud rate from
>> its default of 38,400 back to 4800. That works. Unfortunately CONFIG:RS232,
>> when I change the baud rate from 38400 to 4800 and press MENU/CONFIG again,
>> the baud rate change is not saved in the K3 and I can no longer connect to
>> my logging program. The only work-around I have found so far is to turn off
>> the P3, set the K3 CONFIG:RS232 from 38400 to 4800, then press MENU/CONFIG,
>> then turn the P3 ON again, and all works correct.
>>
>> Will there be a firmware update that will allow the P3 and the K3 to be set
>> at baud rates other than 38400 when BOTH the K3 and the P3 are turned on? I
>> certainly hope so because this YPlog is the only logging program I have
>> found in some 20 years that will allow me to send CW at speeds over 60 wpm
>> without the CW stuttering due to I/O interrupts from a CPU.
>>
>> Thanks and 73,
>>
>> Tom - W4BQF
>>
>> ______________________________________________________________
>> 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
>> ______________________________________________________________
>> 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
> ______________________________________________________________
> Elecraft mailing list
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> 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
>

KK7P

Re: FW: P3 and K3 RS-232 baud rates

In reply to this post by Chester Alderman

It means that the P3 combination will interface to your computer at
4,800 bps if that is what you set it to on the P3.

The data rate on the RS232 "private line" between the P3 and the K3 is
set by the P3, and is currently 38,400 bps.

The K3 is in fact operating at the data rate indicated by [K3] CONFIG:RS232.

If you turn the P3 off, then the K3 will be connected to your computer
through a bypass relay in the P3. You would then need to either adjust
the computer's data rate setting, or the K3's, to match each other.

73,

Lyle KK7P

> On page 13 of the P3 Owner's Manual, in the section 'RS232 XCVR', the last
> sentence states: "The K3 baud rate is set automatically by the P3 and cannot
> be changed at the K3" Based on that, is it correct that if I set the P3 baud
> rate to 4800 b, then the K3 will be operating at 4800 b even though
> CONFIG:RS232 reads 38400b?
>

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Chester Alderman

Re: FW: P3 and K3 RS-232 baud rates

Thanks Lyle!

K1GQ/Bill just sent me an email that clarified my confusion; saying
basically that the P3 talks to the 'outside world' at whatever baud rate is
set on the P3, but the P3 and K3 communicate with each other at a fixed
38400 b rate! So between you and Bill, my confusion has been cleared.

Thanks again and 73,

Tom - W4BQF

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Lyle Johnson
Sent: Tuesday, September 14, 2010 8:28 PM
To: [hidden email]
Subject: Re: [Elecraft] FW: P3 and K3 RS-232 baud rates

It means that the P3 combination will interface to your computer at
4,800 bps if that is what you set it to on the P3.

The data rate on the RS232 "private line" between the P3 and the K3 is
set by the P3, and is currently 38,400 bps.

The K3 is in fact operating at the data rate indicated by [K3] CONFIG:RS232.

If you turn the P3 off, then the K3 will be connected to your computer
through a bypass relay in the P3. You would then need to either adjust
the computer's data rate setting, or the K3's, to match each other.

73,

Lyle KK7P

> On page 13 of the P3 Owner's Manual, in the section 'RS232 XCVR', the last
> sentence states: "The K3 baud rate is set automatically by the P3 and
cannot
> be changed at the K3" Based on that, is it correct that if I set the P3
baud
> rate to 4800 b, then the K3 will be operating at 4800 b even though
> CONFIG:RS232 reads 38400b?
>

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Ed Muns, W0YK

Re: FW: P3 and K3 RS-232 baud rates

In reply to this post by KK7P

Lyle, KK7P, wrote:
> If you turn the P3 off, then the K3 will be connected to your
> computer through a bypass relay in the P3. You would then
> need to either adjust the computer's data rate setting, or
> the K3's, to match each other.

This is an unfortunate "feature" to have to change the K3 or PC RS232 speed
configuration every time you toggle the P3 on or off.

Ed - W0YK

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Don Cunningham

Re: FW: P3 and K3 RS-232 baud rates

Ed,
I think you are misunderstanding. You would only have to change the
configuration IF you needed to have P3 set to 4800 baud or some other rate
than the default 38400. I use P3 and K3 at default rates and have no
problems at all, P3 on or off.
73,
Don, WB5HAK

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KK7P

Re: FW: P3 and K3 RS-232 baud rates

In reply to this post by Ed Muns, W0YK

Only if you are using a serial port rate slower than 38,400 bps. In
some future firmware rev of the P3 or K3, this could conceivably go away.

I realize some stations are set up to use a slower data rate. Unless
you have a software program that is not capable of operating with a
serial port set to 38,400 bps, or have some other technical reason to
run slower, I suggest you always use that rate. Even if you don't have
a P3 :-)

73,

Lyle KK7P

>> If you turn the P3 off, then the K3 will be connected to your
>> computer through a bypass relay in the P3. You would then
>> need to either adjust the computer's data rate setting, or
>> the K3's, to match each other.
> This is an unfortunate "feature" to have to change the K3 or PC RS232 speed
> configuration every time you toggle the P3 on or off.
>

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Chester Alderman

Re: FW: P3 and K3 RS-232 baud rates

In reply to this post by Don Cunningham

Same here Ed. I now know how to use my logging program at 4800b and then
N1MM Logger at 38400b. Very simple once you understand how it works.

73,
Tom - W4BQF

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Don Cunningham
Sent: Tuesday, September 14, 2010 10:22 PM
To: [hidden email]; [hidden email]
Subject: Re: [Elecraft] FW: P3 and K3 RS-232 baud rates

Ed,
I think you are misunderstanding. You would only have to change the
configuration IF you needed to have P3 set to 4800 baud or some other rate
than the default 38400. I use P3 and K3 at default rates and have no
problems at all, P3 on or off.
73,
Don, WB5HAK

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Ed Muns, W0YK

Re: FW: P3 and K3 RS-232 baud rates

In reply to this post by Don Cunningham

Don, WB5HAK, wrote:
> I think you are misunderstanding. You would only have to
> change the configuration IF you needed to have P3 set to 4800
> baud or some other rate than the default 38400. I use P3 and
> K3 at default rates and have no problems at all, P3 on or off.

I use 4800 baud in one of my PC programs (38400 is not an option).
Therefore, when the P3 is turned off, I have to go into the K3 CONFIG menu
and change the RS232 speed from 38400 (that the P3 automatically sets when
it boots up) back to 4800. Yes, if you set 38400 in your PC program(s) then
there is no issue. For people that use one of the other three alternative
PC speeds, however, it is an annoying inconvenience.

Ed - W0YK

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Joe Subich, W4TV-4

Re: FW: P3 and K3 RS-232 baud rates

In reply to this post by KK7P

Lyle,

> I realize some stations are set up to use a slower data rate. Unless
> you have a software program that is not capable of operating with a
> serial port set to 38,400 bps, or have some other technical reason to
> run slower,

Unfortunately there are a significant number of older programs that
do not support 38,400 ... many old loggers that do not have specific
K3 support still work very well with the Kenwood settings but they
are limited to 19,200 or even hard coded at 4800.

It is important for the P3 to reset the K3 RS232 parameter to the
P3 RS232 (user interface) setting when the P3 is turned off.

73,

... Joe, W4TV

On 9/14/2010 10:27 PM, Lyle Johnson wrote:

> Only if you are using a serial port rate slower than 38,400 bps. In
> some future firmware rev of the P3 or K3, this could conceivably go away.
>
> I realize some stations are set up to use a slower data rate. Unless
> you have a software program that is not capable of operating with a
> serial port set to 38,400 bps, or have some other technical reason to
> run slower, I suggest you always use that rate. Even if you don't have
> a P3 :-)
>
> 73,
>
> Lyle KK7P
>
>>> If you turn the P3 off, then the K3 will be connected to your
>>> computer through a bypass relay in the P3. You would then
>>> need to either adjust the computer's data rate setting, or
>>> the K3's, to match each other.
>> This is an unfortunate "feature" to have to change the K3 or PC RS232 speed
>> configuration every time you toggle the P3 on or off.
>>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>
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> Please help support this email list: http://www.qsl.net/donate.html
>