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K3/P3 - To watch own TX, what lines need to be disconnected?

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Nr4c

K3/P3 - To watch own TX, what lines need to be disconnected?

For those who want to use the P3 to adjust TX EQ, what lines need to be
disconnected from the RS-232 circuit. Should be easy to make a box with a
switch to disable certain lines without having to disconnect the cable
between the P3/K3.

Maybe could be triggered by the "Key Out" signal, or just a simple toggle
switch.

Better still, add it to the P3, or offer it as a 'fungtion key'".

...bc

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Alan Bloom

Re: K3/P3 - To watch own TX, what lines need to be disconnected?

The RS-232 cable between the P3 and the K3. You could make a box with a
DPST switch or relay to open the TXD and RXD lines if you don't want to
unplug the cable. On the other hand, how often do you adjust TX EQ? It
would probably be easier just to unplug the cable than to build a switch
box.

Alan N1AL

On Mon, 2010-10-18 at 17:42 -0400, Bill Conkling wrote:

> For those who want to use the P3 to adjust TX EQ, what lines need to be
> disconnected from the RS-232 circuit. Should be easy to make a box with a
> switch to disable certain lines without having to disconnect the cable
> between the P3/K3.
>
>
>
> Maybe could be triggered by the "Key Out" signal, or just a simple toggle
> switch.
>
>
>
> Better still, add it to the P3, or offer it as a 'fungtion key'".
>
>
>
> ...bc
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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Nr4c

Re: K3/P3 - To watch own TX, what lines need to be disconnected?

Alan,

Thanks for the answer to my question. That would be a simple accessory.

Now to answer your question. A lot depends on how your station is
setup. If the radio is placed so it is very inconvienient to
disconnect the cable, it makes sense to add a switch. And, there may
be times when you might want to look at the TX signal without actually
changing it.

Since I saw the 'disconnect the cable' routine in the P3 manual on
line, I'll assume there is little possibility of damage to the K3/P3
by doing this.

Since it can be useful, and the proceedure is documented, why not make
it a 'feature', not a 'work around'? A relay in the P3 and some code
to configure a soft key, and maybe a modal to activate yes/no.

I'm relatively new to the K3 and don't have a P3 yet. But hope to in
a month or so. I'd like this option.

Thank you.

...bc

...bc

Quoting Alan Bloom <[hidden email]>:

> The RS-232 cable between the P3 and the K3. You could make a box with a
> DPST switch or relay to open the TXD and RXD lines if you don't want to
> unplug the cable. On the other hand, how often do you adjust TX EQ? It
> would probably be easier just to unplug the cable than to build a switch
> box.
>
> Alan N1AL
>
>
> On Mon, 2010-10-18 at 17:42 -0400, Bill Conkling wrote:
>> For those who want to use the P3 to adjust TX EQ, what lines need to be
>> disconnected from the RS-232 circuit. Should be easy to make a box with a
>> switch to disable certain lines without having to disconnect the cable
>> between the P3/K3.
>>
>>
>>
>> Maybe could be triggered by the "Key Out" signal, or just a simple toggle
>> switch.
>>
>>
>>
>> Better still, add it to the P3, or offer it as a 'fungtion key'".
>>
>>
>>
>> ...bc
>>
>> ______________________________________________________________
>> 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
>
>
>

N5GE

Re: K3/P3 - To watch own TX, what lines need to be disconnected?

On Tue, 19 Oct 2010 10:39:49 -0400, [hidden email] wrote:

Alan,

Please don't add that functionality to production units.

I don't want to pay the engineering cost or material costs that would
be required for something that 1% to 5% of the P3 users would use.
Make it an optional circuit board that with a relay that breaks the
connection that can be purchased and installed by those who want it.

73,

Tom, N5GE

K3 #806 with SUB RX, PR6,
KRC2 and K144XV
K3 #1055 with PR6 and XV432
W1, 2 W2's and other small kits

QCWA Life Member 35102

[hidden email]
http://www.n5ge.com
http://www.swotrc.net

>
>Alan,
>
>Thanks for the answer to my question. That would be a simple accessory.
>
>Now to answer your question. A lot depends on how your station is
>setup. If the radio is placed so it is very inconvienient to
>disconnect the cable, it makes sense to add a switch. And, there may
>be times when you might want to look at the TX signal without actually
>changing it.
>
>Since I saw the 'disconnect the cable' routine in the P3 manual on
>line, I'll assume there is little possibility of damage to the K3/P3
>by doing this.
>
>Since it can be useful, and the proceedure is documented, why not make
>it a 'feature', not a 'work around'? A relay in the P3 and some code
>to configure a soft key, and maybe a modal to activate yes/no.
>
>I'm relatively new to the K3 and don't have a P3 yet. But hope to in
>a month or so. I'd like this option.
>
>Thank you.
>
>...bc
>
>...bc
>
>
>Quoting Alan Bloom <[hidden email]>:
>
>> The RS-232 cable between the P3 and the K3. You could make a box with a
>> DPST switch or relay to open the TXD and RXD lines if you don't want to
>> unplug the cable. On the other hand, how often do you adjust TX EQ? It
>> would probably be easier just to unplug the cable than to build a switch
>> box.
>>
>> Alan N1AL
>>
>>
>> On Mon, 2010-10-18 at 17:42 -0400, Bill Conkling wrote:
>>> For those who want to use the P3 to adjust TX EQ, what lines need to be
>>> disconnected from the RS-232 circuit. Should be easy to make a box with a
>>> switch to disable certain lines without having to disconnect the cable
>>> between the P3/K3.
>>>
>>>
>>>
>>> Maybe could be triggered by the "Key Out" signal, or just a simple toggle
>>> switch.
>>>
>>>
>>>
>>> Better still, add it to the P3, or offer it as a 'fungtion key'".
>>>
>>>
>>>
>>> ...bc
>>>
>>> ______________________________________________________________
>>> 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

Amateur Radio Operator N5GE

Stan Gibbs, KR7C

Re: K3/P3 - To watch own TX, what lines need to be disconnected?

In reply to this post by Nr4c

nr4c wrote

Since it can be useful, and the proceedure is documented, why not make
it a 'feature', not a 'work around'? A relay in the P3 and some code
to configure a soft key, and maybe a modal to activate yes/no.

I think the feature is pretty much already there: When you want to monitor your TX signal, just go into the Config menu and set the RS232 baud rate to something other than 38400 (which the P3 expects). Transmit, and voila!, your signal is visible. To turn the default behavior back on, just restore the baud rate to 38400 and exit the Config menu. You could even assign a menu command to a PF key to accomplish this.

Seems to work here. Is there any problem with doing this?

73, Stan - KR7C

Bill K9YEQ

Re: K3/P3 - To watch own TX, what lines need to be disconnected?

Stan,

I sure wish I had thought of this! I just unplugged my P3 Serial connection.
I then checked my audio after already following some other user transmitter
equalizer suggestions to confirm what I had already done. Don't need to do
it again, unless I buy another mic ... not likely, as I love the Heil Gold
line 4 and 5 ( I use 5 unless trying to make Euro contacts from the Midwest)
elements. I no longer invite on-air requests for "how do I sound" any more.
Seems as everyone comes out of the woodwork and the sound only pleases the
ones with the loudest or most aggressive responses. I want penetration of
signal based on a clean signal based on what I want. The P3 helps me see my
signal visually. I have a penetrating signal, not a broadcast signal.

Bill
K9YEQ
K2 and KX1 field tester, K3 and modules

-----Original Message-----

nr4c wrote:
>
>
> Since it can be useful, and the proceedure is documented, why not make
> it a 'feature', not a 'work around'? A relay in the P3 and some code
> to configure a soft key, and maybe a modal to activate yes/no.
>
>

I think the feature is pretty much already there: When you want to monitor
your TX signal, just go into the Config menu and set the RS232 baud rate to
something other than 38400 (which the P3 expects). Transmit, and voila!,
your signal is visible. To turn the default behavior back on, just restore
the baud rate to 38400 and exit the Config menu. You could even assign a
menu command to a PF key to accomplish this.

Seems to work here. Is there any problem with doing this?

-----
73, Stan - KR7C
--

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