[WriteLog] What's wrong with AFSK? was - 5 bit mystery unraveled

[Ian White, G3SEK]

Jim Smith wrote:
>It seems to me that the cognoscenti prefer FSK to AFSK.  I have never 
>seen any reasons for this preference, probably because I haven't looked 
>in the right place.  So, what's the problem with just sending AFSK to 
>the radio, thereby eliminating the need for an AFSK to FSK converter?
>

Agreed with all the good reasons for using FSK.

Yet another is that in contests that allow both RTTY and PSK, using FSK 
for RTTY means you don't have to change the audio level setup when 
switching modes.

However, one WriteLog-related reason for needing AFSK for RTTY is if you 
don't have a second serial port. I'm just about to build an interface 
for the vacation radio, which runs with an old laptop that has only one 
serial port... so it looks like I'll be having to use AFSK, like it or 
not.

Wayne, is there any way to sneak an FSK line out on the parallel port? 
(I know it's not ideal, but at least it's another option.)


-- 
73 from Ian G3SEK