[CQ-Contest] Keying interface

[Joe]

What do you use for a rig interface for the higher current requirements on
older rigs, such as Kenwood TS520, etc. with a 2N4400 transistor type
interface?  I've had some luck driving my Ham Keyer with the regular
interface, and modifying the output of the Ham Keyer with a reed-relay,
and connecting this to the Kenwood key jack.  


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