"clifto" wrote in message
...
Frank Dresser wrote:
I think broadcast coded messages one sort or another will be around for
a
long time. But I don't think the Cuban numbers will go to DRM until
Radio
Havana goes to DRM.

DRM is sensitive to QRN, no? I'd bet mission-critical commo won't go to
DRM in most cases.

Yeah, I think you're right. There's been some discussion here about how
sensitive DRM would be to jamming, and it seems likely that there would be a
FM like capture effect, and it wouldn't take an overwhelmingly powerful
signal to jam it. Standard AM can usually be understood even under a signal
two or three times more powerful than it.

Frank Dresser