"Krack Johnson" wrote in message
...
I have a question about keying my Kenwood TS-530s. I want to key this
directly from my computer but am having problems finding an interface.
What
kind of circuit does the ts530s use? Is it a grid block and if so can I
use
a grid block adapter and a normal serial interface?

The 530 has -65 volts at the key input, so negative keying is in order.
73 de Glenn AA5PK