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P3 Panadapter Cable Connections

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MICHAEL SMITH

P3 Panadapter Cable Connections

Gentlemen:

I recently purchased a P3 and connected it to my K3. The installation shares the RS232 connection with a Microham USB interface III for digital operation. I used a Y cable to connect both of these units simultaneously.

I find I cannot run both at the same time. If I do, the P3 does not display the frequency at the top of the screen, and does not display the band-pass of the VFO A. Each unit will run separately with full function.

Has anyone else experienced this interaction? Were you able to adjust the connection to allow full function of both units? How did you do it?

73, Mike Smith
K0CCM
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Rick Bates, NK7I

Re: P3 Panadapter Cable Connections

While I don't have the Microham, the Y should be first in the series
(listen only port to the Microham); to the P3, then the cable from the
P3 to the K3 so they can 'chat'. (That is the same as I do for my
SteppIR controller.)

HNY,
Rick NK7I

On 1/4/2021 12:28 PM, MICHAEL SMITH wrote:

> Gentlemen:
>
> I recently purchased a P3 and connected it to my K3. The installation shares the RS232 connection with a Microham USB interface III for digital operation. I used a Y cable to connect both of these units simultaneously.
>
> I find I cannot run both at the same time. If I do, the P3 does not display the frequency at the top of the screen, and does not display the band-pass of the VFO A. Each unit will run separately with full function.
>
> Has anyone else experienced this interaction? Were you able to adjust the connection to allow full function of both units? How did you do it?
>
> 73, Mike Smith
> K0CCM
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
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>
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> Please help support this email list: http://www.qsl.net/donate.html
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Joe Subich, W4TV-4

Re: P3 Panadapter Cable Connections

In reply to this post by MICHAEL SMITH

> I recently purchased a P3 and connected it to my K3. The
> installation shares the RS232 connection with a Microham USB
> interface III for digital operation. I used a Y cable to connect
> both of these units simultaneously.
That is the *WRONG WAY* to connect a K3, P3 and Computer.

Connect the RS-232 plug from microHAM USB III to the "PC" jack
on the P3. Connect the XCVR jack on the P3 to the RS232 jack
on the K3. Set the K3 RS232 RATE to 38,400 and set the CAT
Rate in your logging software to 38,400 as well.

73,

... Joe, W4TV

On 2021-01-04 3:28 PM, MICHAEL SMITH wrote:

Rick Bates, NK7I

Re: P3 Panadapter Cable Connections

My bad, I didn't think it through enough. Joe is right.

Rick NK7I

On 1/4/2021 1:10 PM, Joe Subich, W4TV wrote:

>
>> I recently purchased a P3 and connected it to my K3. The
>> installation shares the RS232 connection with a Microham USB
>> interface III for digital operation. I used a Y cable to connect
>> both of these units simultaneously.
> That is the *WRONG WAY* to connect a K3, P3 and Computer.
>
> Connect the RS-232 plug from microHAM USB III to the "PC" jack
> on the P3. Connect the XCVR jack on the P3 to the RS232 jack
> on the K3. Set the K3 RS232 RATE to 38,400 and set the CAT
> Rate in your logging software to 38,400 as well.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 2021-01-04 3:28 PM, MICHAEL SMITH wrote:
>> Gentlemen:
>>
>> I recently purchased a P3 and connected it to my K3. The
>> installation shares the RS232 connection with a Microham USB
>> interface III for digital operation. I used a Y cable to connect
>> both of these units simultaneously.
>>
>> I find I cannot run both at the same time. If I do, the P3 does not
>> display the frequency at the top of the screen, and does not display
>> the band-pass of the VFO A. Each unit will run separately with full
>> function.
>>
>> Has anyone else experienced this interaction? Were you able to
>> adjust the connection to allow full function of both units? How did
>> you do it?
>>
>> 73, Mike Smith
>> K0CCM
>
> ______________________________________________________________
> 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]

Joe Subich, W4TV-4

Re: P3 Panadapter Cable Connections

In reply to this post by Rick Bates, NK7I

On 2021-01-04 4:07 PM, Rick NK7I wrote:
> While I don't have the Microham, the Y should be first in the series
> (listen only port to the Microham);

*NO!!!* The microHAM USB III is, in part, a USB to Serial converter.
It provides the CAT connection to the transceiver and should be treated
as a computer serial port. The RS232 connection should *NEVER* be
attached to a "listen only" port on a "Y" cable.

73,

... Joe, W4TV

On 2021-01-04 4:07 PM, Rick NK7I wrote:

> While I don't have the Microham, the Y should be first in the series
> (listen only port to the Microham); to the P3, then the cable from the
> P3 to the K3 so they can 'chat'. (That is the same as I do for my
> SteppIR controller.)
>
> HNY,
> Rick NK7I
>
>
> On 1/4/2021 12:28 PM, MICHAEL SMITH wrote:
>> Gentlemen:
>>
>> I recently purchased a P3 and connected it to my K3. The installation
>> shares the RS232 connection with a Microham USB interface III for
>> digital operation. I used a Y cable to connect both of these units
>> simultaneously.
>>
>> I find I cannot run both at the same time. If I do, the P3 does not
>> display the frequency at the top of the screen, and does not display
>> the band-pass of the VFO A. Each unit will run separately with full
>> function.
>>
>> Has anyone else experienced this interaction? Were you able to adjust
>> the connection to allow full function of both units? How did you do it?
>>
>> 73, Mike Smith
>> K0CCM

k6mrmagnet

Re: P3 Panadapter Cable Connections

In reply to this post by MICHAEL SMITH

Do not use a Y cable. I could go into the whole technical description, but don’t.

I’m assuming here a normal non-USB K3. What you should do is connect the P3 normally to the K3 through the XCVR port on the P3, and then connect the Microham device to the PC port on the P3.

Ken K6MR

From: MICHAEL SMITH<mailto:[hidden email]>
Sent: Monday, January 4, 2021 12:29
To: [hidden email]<mailto:[hidden email]>
Subject: [Elecraft] P3 Panadapter Cable Connections

Gentlemen:

I recently purchased a P3 and connected it to my K3. The installation shares the RS232 connection with a Microham USB interface III for digital operation. I used a Y cable to connect both of these units simultaneously.

I find I cannot run both at the same time. If I do, the P3 does not display the frequency at the top of the screen, and does not display the band-pass of the VFO A. Each unit will run separately with full function.

Has anyone else experienced this interaction? Were you able to adjust the connection to allow full function of both units? How did you do it?

73, Mike Smith
K0CCM
______________________________________________________________
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______________________________________________________________
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