[Heathkit] question on keying a SB-221

[Bill Cromwell]

On Thu, 2013-04-18 at 00:48 -0500, rbig wrote:
> Thanks, Bill.   Great answer.    
> 
> I appreciate the response.   
> 
> It seems that using the Harbach mod will make any rig key it OK
> 

Hi,

I don't know whays in that Harbach box but high voltage transistors can
also do that job in place of a mechanical relay. Something to consider
if you roll your own.

73,

Bill  KU8H