J15 (phono) is the keying output... it connects to the drain of Q3 and keys a linear...
73 Dave, G4AON
=========================
That PTT RCA socket is an INPUT - to close the PTT line - ie it puts the K3
into transmit.
On 26/12/07 19:16, "Dave G4AON" <elecraft at astromag.co.uk <
http://mailman.qth.net/mailman/listinfo/elecraft>> sent:
>/ I use my K3/100 with an Acom 1000, I just connect the phono keying
/>/ output to the amplifier keying input with a phono to phono screened
/>/ lead. The Acom doesn't have ALC output, so it's not an issue. The
/>/ K3/Acom combination works great on CW with no relay thumps or clicks
/>/ from the almost silent vacuum relay in the Acom linear.
/>/
/>/ The ALC input to the K3 is positive going (0 to + 5 Volts on pin 15 of
/>/ the Aux I/O socket) and has been discussed on the Reflector previously.
/>/
/>/ 73 Dave, G4AON
/>/ K3/100 #80
/>/ ================/
_______________________________________________
Elecraft mailing list
Post to:
[hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help:
http://mailman.qth.net/subscribers.htmElecraft web page:
http://www.elecraft.com
Locked
