[Elecraft] KPA500 question 2 - remote power control

[Jack Brindle]

Mike;

I guess you didn’t get the email I sent yesterday asking for more information from you about this topic. You might want to recheck for that email, there was a lot of good information in it.
Please send me detailed info about your setup, with specifics on the ACC connections and the data you are sending the KPA to try to turn in on.

Using the rear-panel switch on the KPA is the same as simply pulling the AC plug. When it is turned on, the low voltage power supply is enabled, placing the microcontroller into bootstrap mode. In this situation, sending a ‘P’ character to the KPA will cause it to come to life. This information is described in the KPA500 Programming Reference.

Now, if you would like to respond to my email, we will work with you to see if you can get your setup closer to the way you really want it.

Jack Brindle, W6FB
Elecraft Engineering


On May 26, 2014, at 1:26 PM, Michael Walker <va3mw at portcredit.net> wrote:

> I wish I could say it works for me.  It isn't a com port issue as those are
> solid (I know what I am doing with RS232 and windows).
> 
> If I power off the AC power of the amp and then turn it on remotely it
> doesn't work.  It 'will' work after about 10-15 tries to wake it up.
> 
> So, to summarize:
> 
> KPA500 with the KPA500 utility
> Hardware RS232 port
> The ability to turn all AC power off to the amp remotel
> 
> You power off the amp without turning off the AC and you can't just turn it
> back on again without actually power cycling the AC a few times.
> 
> This shouldn't be that hard.  I'll have to talk to Elecraft tomorrow when
> they get in.  I'd hate to post a poor review on eHam.
> 
> mike va3mw
> 
> 
> 
> 
> 
> 
> On Sun, May 25, 2014 at 7:57 PM, KE8G <ke8g at cox.net> wrote:
> 
>> Hi Michael,
>> I, too, use the KPA500 remotely, and have no problem turning the power on
>> & off.
>> 
>> I take it you have the KPA500 connected to a computer?  Did you download
>> the KPA500 software from the Elecraft web site?  This allows complete
>> monitoring and on/off operation.
>> 
>> 73 de Jim - KE8G
>> 
>> Sent from my iPad
>> 
>>> On May 25, 2014, at 4:37 PM, Michael Walker <va3mw at portcredit.net>
>> wrote:
>>> 
>>> I have just installed my KPA500 on my remote base and I noticed that it
>> is
>>> possible to turn it off via the computer or via just dropping the AC
>> power
>>> and not getting it to come back on.
>>> 
>>> This makes is sort of a challenge for remote operating.
>>> 
>>> Is this normal operation or did I miss something obvious.
>>> 
>>> 73 all
>>> 
>>> Mike va3mw
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