[RTTY] AFSK vs FSK question

[Jeff Blaine AC0C]

David,

The trend with RTTY is more toward software demodulation - and it's been 
that case for years now.  Dedicated terminal units like KAM are functional - 
but unless you have a 1990 vintage PC in your shack, your current PC along 
with something simple like MMTTY would provide far better flexibility and 
functionality.

On the transmit side, the answer is more of a split.  Typically I believe 
these answers to FSK or AFSK tend to follow more along the lines of "this is 
how I started - so this is how I run it now."  At one time, there was a 
technical argument that FSK provided a more clean signal but that is not the 
case for quite some time now.  Look back in the posts written by CHEN and 
you can get more details there than are digestible by the average human.

Getting AFSK running is not any more complicated than getting FSK running - 
just different.  And typically, if you already have your rig setup for any 
digital mode other than RTTY, it's easy to start using AFSK as it's 
generally configured in the same way that AFSK is setup.

The answer to this question depends on what you want to do.  If you are 
interested in looking at only one single frequency and are not interested in 
any other modes, then a simple FSK configuration is the way to go.  But if 
you think you are interested in PSK or some other digital mode, then the 
same interface that let's you work in AFSK will work for all of these.

73/jeff/ac0c


--------------------------------------------------
From: "Andrei Stchislenok" <asnp3d at gmail.com>
Sent: Monday, October 05, 2009 8:41 AM
To: "David VE3VID" <ve3vid at hotmail.com>
Cc: "RTTY contest group" <rtty at contesting.com>
Subject: Re: [RTTY] AFSK vs FSK question

> David,
>
> Please forget about AFSK.
>
> Only FSK - period.
>
> Thank you
>
> 2009/10/4 David VE3VID <ve3vid at hotmail.com>
>
>>
>> I'm just getting started in RTTY.  Is AFSK just a problem to make work?
>>  AFSK RTTY sounds alot like PSK?   My Kenwood TS450 does FSK, is it 
>> better
>> to invest in the hardware for RTTY (KAM etc) than struggle with AFSK.
>>
>>
>>
>> Thanks for any help
>>
>>
>>
>> David
>>
>>
>>
>>     VE3VID          Located in rural Canada
>> Solar power.  Wood heat.
>> Mosley tribander @ 22m
>> 2element delta-quad on 40m
>> Lots of space for dipoles,
>> bears and wolves......73
>>
>>
>>
>> _________________________________________________________________
>> New! Open Messenger faster on the MSN homepage
>> http://go.microsoft.com/?linkid=9677405
>> _______________________________________________
>> RTTY mailing list
>> RTTY at contesting.com
>> http://lists.contesting.com/mailman/listinfo/rtty
>>
>
>
>
> -- 
> 73's Andrei
> EW1AR-NP3D
> ----------------------------------------------------
> DXCC RTTY via LoTW only
> Who has what? - World Wide Rating
> Please visit: www.k4fo.com/cqrtty/
> _______________________________________________
> RTTY mailing list
> RTTY at contesting.com
> http://lists.contesting.com/mailman/listinfo/rtty
>