Does the advice for setting up soundcard digital modes given here: http://www.mail-archive.com/[email protected]/msg53656.html
become effective when using this new version? Specifically: "If you try and trick the system and run with *zero* ALC bars in PSK31, the ALC has to work hard to give you your requested power - or maybe it will think there is insufficient signal to work with - and your Tx S/N may suffer. So, *please* set it to 4 bars in soundcard "digital" modes." This sounds right given the description of the ALC changes. Bob NW8L > * SSB TX POWER CONTROL improved. Set ALC for about 5 bars (rarely 6+) > using MIC gain > control, then set CMP and POWER as desired. The RF power bargraph shows > approx. > peak power when you whistle or shout, but will typically show well below > peak power > during normal speech. If you're using an external peak-reading wattmeter > or power > amplifier, adjust POWER as required while observing the effect of speech > peaks. > If you find that an SSB power setting higher or lower than for CW is > often required, > you may wish to compensate for this using the CONFIG:TXG VCE menu entry. > > Technical Note: Our latest MCU and DSP code uses minimal amounts of ALC, > consistent > with analysis done by Leif Asbrink, SM5BSZ. (His findings and > recommendations can be > found on his web site, www.nitehawk.com/sm5bsz.) The general idea is to > keep > transmit drive just below where ALC can cause splatter on speech peaks, > rather than > apply ALC heavily to achieve additional compression. > _______________________________________________ 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
