[Heathkit] Broadcast quality audio???
David Thompson
thompson at mindspring.com
Tue May 16 14:02:11 EDT 2006
I keep hearing about removimg clippers and audio filters in AM gear so you
can have broadcast quality audio. The actual practice in the 1950's was you
needed communications punch to get thru on AM.
In 1958 I built a 15 watt speech amp/modulation driver to drive the 811A's
in a modulator for my 4-400A amp. The clipper in combination with the D-104
mic made a "killer" combination to bust thru on AM for Dx or calling a net
on the extremely busy AM bands.
Today we have the luxury of using "broadcast" quality AM as there is little
AM QRM on the AM frequencies. Buts lets remember the :real" norm for 1950's
AM audio.
73 Dave K4JRB
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