Andrew O'Brien wrote: > I found this quote today, anyone care to comment ? > > " Although it is a common belief to the contrary, it is in fact quite > alright to let the transmitter ALC line operate on PSK31. The ALC > line will control the drive level without clipping in the same way > that it does on voice operation" > > Andy K3UK
Well, it depends on your ALC time constants. As long as levels are kept correctly, and the envelope doesn't get distorted...it takes a slow decay ALC time constant to do no harm. If ALC behaves like a fast acting compressor, forget it...you better leave the meter needle at rest. Otherwise, you might be crushing your signal, making it smaller on the peaks, and wider... If you can, use an oscilloscope or a pskscope to actually see the effects... or defects...over the RF signal going to your antenna. It will possibly require to take an attenuated RF sample. Jose, CO2JA __________________________________________ XIII Convención Científica de Ingeniería y Arquitectura 28/noviembre al 1/diciembre de 2006 Cujae, Ciudad de la Habana, Cuba http://www.cujae.edu.cu/eventos/convencion Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/digitalradio/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
