[GreenKeys] Fwd: [ham-hist] Hugo Gernsback's callsign?

[David I. Emery]

On Tue, Aug 15, 2017 at 02:52:35PM -0700, Richard Knoppow wrote:
>    There was never a restriction on AM bandwidth but broadcasters have 
> decided to limit it in order to make room for digital signals.

	My understanding has been that some time in the late 80s or
early 90s the FCC required that AM stations meet a spectral mask...
consistant with 5 Khz response but not beyond that... 

	Before that era I think there wasn't much of any restriction.



-- 
  Dave Emery N1PRE/AE, die at dieconsulting.com  DIE Consulting, Weston, Mass 02493
"An empty zombie mind with a forlorn barely readable weatherbeaten
'For Rent' sign still vainly flapping outside on the weed encrusted pole - in 
celebration of what could have been, but wasn't and is not to be now either."