Re: Re: [digitalradio] Re: Olivia vs. RTTY vs. PSK spectrum efficiency

2010-07-21 Thread k3mm
I think the key to making it really fly would be to hold some short sprint contests using PSK63 only. That way you could get a lot of guys to try it without a big commitment of time and effort. As it gains acceptance thru that and word of mouth, it could be added as an optional mode in more

Re: [digitalradio] Re: Olivia vs. RTTY vs. PSK spectrum efficiency

2010-07-20 Thread k3mm
The IMD shouldnt be a significant problem unless something is overdriven. However, you see that with PSK31 and to a lesser extent RTTY fairly often on the bands, although most of what i see is 60 cycle hum and audio harmonics related to that, rather than just pure overdrive. AFSK, etc., is

Re: [digitalradio] Re: Olivia vs. RTTY vs. PSK spectrum efficiency

2010-07-20 Thread Ralph Mowery
- Original Message From: g4ilo jul...@g4ilo.com To: digitalradio@yahoogroups.com Sent: Tue, July 20, 2010 4:29:15 AM Subject: [digitalradio] Re: Olivia vs. RTTY vs. PSK spectrum efficiency Just because a mode is better doesn't mean that people will want to use it, though, and I

Re: [digitalradio] Re: Olivia vs. RTTY vs. PSK spectrum efficiency

2010-07-20 Thread KH6TY
PSK63 was developed as an intended RTTY contesting mode replacement, not for conversation. PSK31 is too slow for contesting and has a preamble and a postamble that slows turnovers down, so the idea was that 100 wpm PSK63 would, overall, including faster turnovers than PSK31, be as fast as RTTY

Re: [digitalradio] Re: Olivia vs. RTTY vs. PSK spectrum efficiency

2010-07-20 Thread J. Moen
: [digitalradio] Re: Olivia vs. RTTY vs. PSK spectrum efficiency - Original Message From: g4ilo jul...@g4ilo.com To: digitalradio@yahoogroups.com Sent: Tue, July 20, 2010 4:29:15 AM Subject: [digitalradio] Re: Olivia vs. RTTY vs. PSK spectrum efficiency Just because a mode

Re: [digitalradio] Re: Olivia vs. RTTY vs. PSK spectrum efficiency

2010-07-20 Thread Ralph Mowery
From: J. Moen j...@jwmoen.com To: digitalradio@yahoogroups.com Sent: Tue, July 20, 2010 8:33:06 PM Subject: Re: [digitalradio] Re: Olivia vs. RTTY vs. PSK spectrum efficiency I completely understand the lure of the old mechanical teleprinters.  But I