Aaargh! I meant to say we used high level I.F. limiters so no AM would get to the detector. That included noise.
So "blankers" were never needed. Maybe Motorola didn't use good limiters. Now to see if I can pry my foot out of my mouth... Ron AC7AC -----Original Message----- ??? I worked on FM gear in the land mobile business as a service rep and salesman and we *never* used a noise blanker. A limiting I.F. amplifier was a basic part of the receiver design since the detector does not respond to amplitude modulation at all, including noise. Noise does not modulate the frequency. Maybe Motorola didn't use good FM detectors. Some simple types of "FM detectors" respond to both AM and FM. Come to think of it maybe that's why I outsold Motorola in our market area with E.F. Johnson land mobile FM gear <G>. Ron AC7AC -----Original Message----- Hi John When I worked for Motorola, both their and GE's top of the line two-way FM mobile radios did include noise blankers for the mobile environment. They worked quite well for their intended use. 73, Bob N6WG _ _______________________________________________ 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
