[Heathkit] SA-5010 outboard paddle help

[Bill Cromwell]

HiDave,

You don't. There is a three pin connector on the rear that takes a three 
pin plug. That is where you connect you paddles. Mine has two RCA 
sockets on the back. One is for positive keying like most solid state 
rigs have and the other is for negative keying lines in transmitters 
with grid-block keying.

73,

Bill  KU8H


On 08/24/2015 06:33 PM, Dave Thompson wrote:
> Hello,
>
> I have a Heathkit uMatic automatic keyer Model SA-5010.  I finally found it was iambic "like" per the manual.
>
> I wanted to hook up a Vibroplex key paddle to the keyer but the only input to the keyer is an RCA jack on the rear.  Iambic requires a 3 wire hook up and I have a 3 wire stereo plug that I use with other keyers. I looked in the manual but get little help.
>
> How do you wire up a Vibroplex paddle to a 2 wire RCA jack?
>
> Thanks in advance.
>
> 73 Dave K4JRB
>