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

[nr4c at widomaker.com]

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 <n1al at cds1.net>:

> 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
>>
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