I really don't care whether people chose to modify their old AM transmitters to "improve" sound quality, as they can do whatever they want with their radio. What does bother me a little is when people use words like "nasty" and "awful" to describe the audio quality of some classic transmitters, as if thedesigners of the day were not smart enough to design a decent transmitter.
At the time these transmitters were built, the goal of amateur pone operation was effective radiotelephone service. Human speech falls into the range between 300 and 3000 Hz. There are sounds outside this range, but they do not contribute to intelligibility. So, in order to make the best use of the power available, the bandwidth didn't need to be more than 4Khz. The next logical step in the quest for efficient use of available power was SSB, which has an equally "nasty" sound but does the intended job quite well. By modifying a transmitter to increase the audio bandwidth, all that is being done is to get it closer to the commercial broadcast transmitters of the day, which needed much greater bandwidth to handle music. Joe KN4JH ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/[email protected]/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: [email protected] To unsubscribe, send an email to [email protected] with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
