Hi fellows, 

I am dealing with and issue related to the Interlocking 2 K3 for our next CQWW 
Adventure in D4C. 

The main problems, that i am encountering are the follow : 

I have builded, a footswitch interlock, between two K3, and easy 2 relay 
Xcrossed switch, both FSwitch avoid that the other one TX the proper K3, and i 
have added a logic for enable the INH of the proper inactive Radio. 

Everything work as expect, even when u use the internal K3 DVR, where u don't 
have a separate PTT line from the DVR that can be used to acknowledge that the 
DVR has been asserted and that can be as the FSwitch to interlock the secondary 
Radio. 

The only way to know that the DVR is ON is to use the K3 PPT OUT, but i need to 
interlock first that the radio TX not after . The DVR memory are played within 
macro developed in WintTest, so i am thinking to use the DIGOUT1 as DVR PTT, 
using proper command MN19 in the DVR macro, allowing, trough a PNP BJT and a 
Relay to simulate a Fswitch press, that can be connected to my interlock board. 

I had look at for any unofficial DIGOUT1 application other then switch on the 
PR6, but no luck .... 

Any suggestion  or advise ? 

Thank's in advance .. 

73 de Fabio I4UFH on of D4C 
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