An example of the effect of "soft" keying can be found in the CW ID used by
most PSK31 programs. They use the same raised-cosine function to on/off key
the carrier as used in the phase shifting. I find that the resulting CW is
excessively soft and unpleasant to listen to, although most stations are
"readable" with that envelope at the relatively slow speed normally used -
about 15 wpm.
72/73/oo, George W5YR - the Yellow Rose of Texas
Fairview, TX 30 mi NE of Dallas in Collin county EM13qe
Amateur Radio W5YR, in the 56th year and it just keeps getting better!
QRP-L 1373 NETXQRP 6 SOC 262 COG 8 FPQRP 404 TEN-X 11771
Icom IC-756PRO #02121 Kachina #91900556 IC-765 #02437
All outgoing email virus-checked by Norton Anti-Virus 2002
|