K4KYV Wrote:
Unfortunately (or apparently so) the prescribed bandwidth would be overly
restrictive to AM if strictly enforced. On the lower HF bands, the only
mode definition is 6 kHz maximum, with no subbands. Period.
But I have never heard of a Canadian AM'er being cited for a signal of
excessive bandwidth from his otherwise properly operated transmitter.
And you never will, Don. Our regulators aren't too concerned about any
excessively wide AM'ers; there are so few of us. A 6khz BW requires a 3 khz
max response in the audio chain. Most guys up here are about 4 khz
response. So long as we don't bother anyone. the IC don't care, so long as
we employ proper engineering standards, and don't splatter. Personally,
when required, I use a Bailey Engineering 3.5 kc brick wall filter.
Ed, VA3ES
