> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:amradio- > [EMAIL PROTECTED] On Behalf Of Geoff/W5OMR > Sent: Friday, December 29, 2006 4:42 PM > To: Discussion of AM Radio > Subject: [AMRadio] PEP for AM > > Anyway, I ran across this information, and thought I'd share it with the > group here, so that some mis-conceptions about AM PEP could be cleared up. > > (from: http://www.pc-oscilloscopes.com/articles/pc_oscilloscope_rf.html) > > P E P (AM) > % Modulation = (( PEP - PC) / PC) *100% > > Example: > Carrier Power PC = 100 W, PEP = 400 W. > > Determine % Modulation > M% = (( 400 - 100) / 100) *100% = ((20-10) / 10) *100% = 100% > > -- > 73 = Best Regards, > -Geoff/W5OMR
Hmmm, let's see, 400 watts -100 watts = 300 watts. Divided by 100 watts = 3. Times 100% = 300% modulation.. I think they forgot the square root of the powers in the formula. 73 Gary K4FMX ______________________________________________________________ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected]
