[Elecraft] K3 Receive Attenuation with KPA500 in Operate

[Don Wilhelm]

Brian,

Yes, the KAT500 is protected.  That is inherent in the K3 ACC (DB15) 
cable going first to the KAT500 and then to the KPA500 There is a 
Keyout-LP signal in the ACC cable to the KAT500 (and then onward to the 
KPA500).
The KAT500 interrupts that signal (to the KPA500) when the KAT500 needs 
to tune.
That Keyout-LP signal is what all the instructions about the DB15 pin 10 
concern themselves with.

73,
Don W3FPR

On 8/1/2013 6:16 PM, Brian F. Wruble wrote:
> Hi Don,
>
> Thanks for the prompt response.
>
> Yes, I am using the DB15 and the PTT line.  I got it working.  Here is my
> new cable lineup:
>
>
>
>
> 1.  ACC on K3 (DB15) >>> DB15 Y Cable | >>>DB15 Cable >>> "XCVR" (DB15) On
> KAT500
>                                                                    |
>                                                        And      | >>> "ACC"
> on Navigator Interface
>
>
> 2.  "RS232" on K3 >>> "XCVR" (RS232) on P3
>
>
> 3.  "PC" on P3 >>> "RS232" on Navigator Interface
>
>
> 4.  "AMP" on KAT500 (DB15) >>> DB15 Cable >>> "AUX1" (DB15) on KPA500
>
> 5.  NO PTT LINE into KPA500 or into KAT500
>
> 6. No "Key Line Interupter" anyplace.
>
>
> With this lineup, is the KAT500 protected from the KPA500 keying when the
> KAT500 is tuning?
>
> I must admit, I have mightily confused myself in this process.
>
> Thanks again,
>
> Brian W3BW
>