> - Original Message
> From: g4ilo
> To: mailto:digitalradio%40yahoogroups.com"; target="_blank" class="
>parsedEmail">digitalradio@yahoogroups.com
> Sent: Tue, July 20, 2010 4:29:15 AM
> Subject: [digitalradio] Re: Olivia vs. RTTY vs. PSK &
From: J. Moen
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
have
to s
M
Subject: Re: [digitalradio] Re: Olivia vs. RTTY vs. PSK & spectrum efficiency
- Original Message
From: g4ilo
To: digitalradio@yahoogroups.com
Sent: Tue, July 20, 2010 4:29:15 AM
Subject: [digitalradio] Re: Olivia vs. RTTY vs. PSK & spectrum efficiency
Just b
m>>
To: digitalradio@yahoogroups.com <mailto:digitalradio%40yahoogroups.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 gue
- Original Message
From: g4ilo
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 guess
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 th
Once the "driver", i.e. transceiver is operated linearly for soundcard
RTTY, a non-linear class-C amp can follow and the result, and high
power, is the same as direct FSK, because the drive to the amp is a pure
RF signal - no competitive loss to the high power contester!
73, Skip KH6TY
On 7/2
--- In digitalradio@yahoogroups.com, k...@... wrote:
>
> Quite frankly, RTTY could easily be replaced with PSK63 as the prime digital
> contest mode. However, many PSK operators are so clueless and often
> downright rude when it comes to contests that its an extremely uphill battle.
> We cou
