[BC] the Purple tube...

[Robert Meuser]

Lewis Munn wrote:
> Dave, etc.
>    
>   I liked someone's comment of a light-emitting Zener.  You could tell when the power was on, for sure, and the regulators regulating.  Days of higher voltages and lower currents.
>    
>   The old Gates Modulation monitor contempoary with the SA39 limiter and SA40 audio gear used an 885 and a relay...same clicking.  The next generation used miniature tubes rather than octal, and was smaller...about 3 RU high but lots deeper, and used the 2D21.  Yes, I remember the clicks.  Dunno that they were all that bad.
>    
>   Todays do not give you the annoying clicks when overmodulating...so you can more easily ignore the warning lights.  

With today's processing and transmitters you over modulate intentionally or you 
dont over modulate. That flashing LED is merely a confidence monitor :-)

R