[WriteLog] Re: CW Keying Interface

[Costas Krallis SV1XV]

> That's what I use.  Some recommend a 3-4K resistor instead of the 1K
> - won't hurt, might help.  2N2222 is fine.   I key CW with DTR on the
> COM port, thru resistor to base of 2n2222.  Ground the emitter.
> Emitter and collector to key rig.  I think you have it.

You may also replace the transistori with an opto-isolator (4N28 etc).
This way you can get ground isolation between the computer and the
RF equipment.

73 Costas SV1XV


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