Bob,DGN, You can throttle the above 3 K off with an EQ and not let the transmitter pass the above 3K audio... I run a GATES BC1G which goes out a lot more then 3K but have it throttled off and can run 100% or more positive peaks keeping the negative side down below 100% with a limiter...Robert WW9W runs the same thing with a BC610 and sounds great...
Bob W1PE -----Original Message----- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of rbethman Sent: Monday, March 08, 2010 2:29 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] AM IARU Region 2 Bandplan This is wonderful in theory. So what are we supposed to do with WWII era equipment such as BC-610s? The entire audio chain goes from 400 to 3500cps. Guess I'll just continue along as I have been doing since I got both of them. I do run a monitor scope, and I know it is clean. I do have to throttle it down with regard to audio gain. If I don't, the PEP out WILL exceed 2000W in a heartbeat! I found this out after finally getting a peak reading Bird. I was hitting 2500W PEP and hadn't known this as earlier I only had to worry about my Amp Supply LK-500ZB. I certainly am NOT running music! The resting carrier is "mighty" close to 400W. Bob - N0DGN On 3/8/2010 2:23 PM, Bob Macklin wrote: > All that is need for communications grade AM is 300Hz to 3KHz audio. Just > use a 6db/octave rolloff at 3KHz. > > There is not much 3KHz or higher energy in the human voice.And we are not > supposed to be playing music. > > Bob Macklin > K5MYJ > Seattle, Wa. > "Real Radios Glow In The Dark" ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net 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 ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net 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
