On Sun, Mar 6, 2011 at 9:15 AM, Jim Jannuzzo <[email protected]> wrote:
> I've now set up corresponding TX filters in TX profiles that mimic this > action. For example, I have a "DIGU100" TX profile with a TX filter set at > 1450 (low) and 1550 (high). There are times that this tight TX filtering > enhances my digital courtesy to others around me on the band. > Actually, you don't need to make TX filters unless your digital mode programs is defective and producing extraneous products. If you are using a program like fldigi or HRD/DM780, the spectrum of the signal is already controlled for you. A TX filter will not make your signal any cleaner but, if you get it too narrow so that it is cutting off the necessary sidebands, it can degrade the signal to the point where it will be difficult to decode at the receiver. -- Brian Lloyd, WB6RQN/J79BPL 3191 Western Dr. Cameron Park, CA 95682 [email protected] +1.767.617.1365 (Dominica) +1.931.492.6776 (USA) (+1.931.4.WB6RQN) _______________________________________________ FlexRadio Systems Mailing List [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/
