Don W3FPR wrote: As an aside, I can recall when the Collins 1.8 kHz SSB mechanical filter was the thing to be desired by the SSB crowd with adequate bucks to buy the filter - it gave great communications intelligibility (albiet at the expense of fidelity) - I just shake my head in wonder about how expectations have changed over the years.
---------------------- They were greatly prized by what many ops called the "Donald Duck set", as AM phone operators often called the SSB stations when both modes were quite popular. (The "Donald Duck" moniker came from what SSB sounded like when not properly tuned in). For A.M rigs, good "communications quality" A.M. had a bandwidth of about 3 kHz (at the -3dB points) and was often wider. The bandwidth was limited only by the coupling circuits between audio stages with no filters as such, so the roll off outside the 3 kHz range was very, very gradual compared to a filter SSB rig. Very few people operate AM these days but many operators long for the more "natural sounding" audio with a somewhat wider bandwidth. Of course, there are those who go to absurd extremes seeking "broadcast quality" audio that uses excessive bandwidth, but they're not representative of the bulk of Hams. Ron AC7AC _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
