[cctalk] Re: FM/Armstrong was: [ Great Vintage Computer Heist of 2012

2022-10-19 Thread Paul Koning via cctalk
> On Oct 19, 2022, at 3:10 PM, Chuck Guzis via cctalk > wrote: > > Indeed, FM was one of the undesired side effects of AM unless you had a > well-isolated or crystal-controlled frequency source for your transmitter. I suppose so, but Idzerda's transmitter produces FM with essentially

[cctalk] Re: FM/Armstrong was: [ Great Vintage Computer Heist of 2012

2022-10-19 Thread Chuck Guzis via cctalk
Indeed, FM was one of the undesired side effects of AM unless you had a well-isolated or crystal-controlled frequency source for your transmitter. As far as detection goes, a simple AM "slope detector" sufficed in most cases for getting intelligible audio. --Chuck