[Elecraft] KPA-500 questions

[Eric Swartz - WA6HHQ, Elecraft]

Is part of a proprietary signaling protocol on the auxbus line in the cable.

73, Eric


On 4/6/2011 10:20 AM, Joe Subich, W4TV wrote:
>> It also feeds back KPA500 status to the K3, which allows the K3 to
>> change between two user set power levels when the amp is in-line or
>> in standby. (Say 30-45W to drive the amp, and 100W when the amp is
>> bypassed.)
> Is this done by a contact closure (e.g., DIGIN), AuxBus or CAT?
> Access to the interface/API would be of value for use with other
> amplifiers or perhaps tuner.  I can think of a couple places to
> use the information.
>
> 73,
>
>      ... Joe, W4TV
>
>
> On 4/6/2011 1:08 PM, Eric Swartz - WA6HHQ, Elecraft wrote:
>> Answers below
>> 73, Eric
>> ---
>> On 4/6/2011 9:49 AM, Mike Fatchett wrote:
>>> The manual describes an optional cable availabe from Elecraft but it is
>>> not in the price list.  I have a K3 and P3.   Is the cable part of the
>>> kit or the assembled amp?
>>          -- It is an optional cable since it is only applicable to the K3.
>> I'll get it up on the
>>              order form ASAP. (We're running hard this morning! :-)
>>
>>             Also note that the KPA500 will auto band-switch with just RF
>> and PTT , following
>>             the K3 and most other rigs in about 10-15 ms of 1st TX.  The
>> AUX cable provides
>>             amplifier band switching prior to TX, and also allows the
>> dedicated band buttons
>>             on the KPA500 to control K3. It also feeds back KPA500 status
>> to the K3, which
>>             allows the K3 to change between two user set power levels when
>> the amp is
>>             in-line or in standby. (Say 30-45W to drive the amp, and 100W
>> when the amp
>>             is bypassed.)
>>> Can we purchase the European AC cord as it might be handy for those who
>>> travel abroad.
>>         Yes, I'll add this to the order form at the same time. (in the
>> next 15 minutes.)
>>> Mike W0MU
>>> ______________________________________________________________
>>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>>
>> 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:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html