[Elecraft] question for psk users

[David Moes]

You are assuming that everyone has the luxury of narrow roofing 
filters and can filter out the week and reject unwanted strong 
signals.  most PSK stations are not blessed with a K3 and are not able 
to suppress strong signals. before I had a K3 2.4 was the narrowes I 
could do.   most afordable rigs today still stop at 3khz (FT950) and 
some even wider.  You should use as little power as possible to 
conduct your QSO.   where I come from that is the law.   using high 
power to conduct a PSK31 qso is rarely necessary.  most other PSK 
users are running less than 30 W and if you can hear them you probably 
don't need 100+ watts to talk back.    I agree that it is needed in 
some cases but one should only shout when you need to and talk normal 
or even whisper if you can.



David Moes
VE3DVY

>
> The reason why a strong signal will "annihilate all the other PSK
> signals" is that most users are trying to receive an entire 2.5kHz
> bandwidth in one gulp. This means that even one strong signal within
> that bandwidth will activate the AGC and drive all the other signals
> down.
>
> Regrettably most PSK users don't understand what is happening, so they
> have to rationalize it into simpler terms like "It's a crime to be
> loud."