[Elecraft]: Tokyo Hy Power HL-1.5Kfx

[Phil & Debbie Salas]

"Has anyone on the list tried running a K2 with a Tokyo Hy Power 
HL-1.5Kfx amplifier, using full QSK. Is any external hardware 
required to enable full QSK operation?"

I got to play with the HL-1.5kFX for a review I did for CQ Magazine.  It
sources only a milliamp or two, so any transceiver solid-state output will
work with it (even my IC-706MKIIG).  I measured the QSK relay switching time
at about 5ms, but the relays are spec'd at 10ms maximum, 5ms typical.  So if
you can set your "amp enable to RF output" delay to 10ms or greater, you
won't have any problems.  You can start with 5ms and listen on a separate
receiver to your signal.  You can hear when you start hot-switching your
transceiver (sounds like bad key-clicks).  Drive the amp with maybe 10-watts
or so when you are doing this.

Phil - AD5X