What Does N.O. Stand For?

[Garey Barrell]

Doug -

Most likely referring to an internal set of contacts on the T-R relay 
that are Normally Open, i.e., Open circuit in Receive, Closed circuit in 
Transmit.  There's probably another one marked N.C. and another marked 
COM.  The COM might just be chassis ground also.

73, Garey - K4OAH
Richmond

Drake 2-B, 4-B & C-Line Service Supplement CDs
<www.k4oah.com>



Davies, Doug A FOR:EX wrote:
> I've noticed the letters "N.O." on one of the power supply connector
> pins on a couple of Heath schematics.  What do these letters stand for?
>
> Doug  VE7DRF
>
>   

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