[Elecraft] KE7X KX3 Book and Configuring: KX3, K3, KPA500, and KAT500

[Phil Hystad]

So, is this normal behavior?  I wasn't expecting any kind of comms between the K3 and the KPA500 that affects the STBY/OPER switching.  It does seem that a power on/off cycle for the KPA500 is required to enable that switch.

Is this designed to work this way or is this a flaw in the design or maybe a missing mini-feature of configuring two different transceivers with the KPA500.  I admit to not scouring all of the documentation yet on the expected functionality of the STBY/OPER switch.

73, phil, K7PEH


On Apr 22, 2014, at 4:14 PM, Don Wilhelm <w3fpr at embarqmail.com> wrote:

> Phil,
> 
> Let me get this straight - the KPA500 is communicating with the K3, then you switch to the KX3 and the KPA500 does not talk with the KX3.
> 
> If that is what is happening, I would expect that to be the case. The communications with the K3 is not synchronized with the attempted communications with the KX3, so a reset (power cycle) of the KPA500 may be required.
> 
> 73,
> Don W3FPR
> 
> On 4/22/2014 7:02 PM, Phil Hystad wrote:
>> Some follow-up questions:
>> 
>> OK, I have the KX3 and K3 configured with the KPA500 and KAT500.  Everything seems to work with one little exception.
>> 
>> The exception:
>> 
>>     --- initial conditions, K3 is on and switched to use the KPA500 and KAT500.  KX3 is off.
>> 
>>     --- using K3 and so on works fine with amp on or with amp in standby.
>> 
>>     --- I turn off K3.  Leave KPA500 on but in STBY mode.
>> 
>>     --- Switch coax from K3 to KX3 (1x2 switch).
>> 
>>     --- Turn on KX3.  KPA500 still in STBY mode.
>> 
>>     --- Attempt to switch KPA500 to OPER from STBY but switch does not work.  If I power off the
>>          KPA500 (front panel switch) and power back on then switch works fine.
>> 
>> I have experimented with all kinds of starting initial conditions and order of events but whenever
>> the KPA500 is left on after using the K3 and then switching to the KX3, the switch on the KPA500
>> to go from STBY to OPER does not work.  I always have to cycle the power from the front panel on/off
>> switch.
>> 
>> 
>