John,

I haven't checked the rigblaster site in quite a while, but they always 
seem to have a wide range of models, from basic to elaborate, with 
prices to match.

Others are made by Donner and Bux Com, and others.

You might want to think about what modes you want to operate.   Some 
interfaces are  simple sound card interfaces, to connect rig to pc sound 
card.  With the right software they will do PSK, AFSK RTTY, digital 
voice in SSB, etc.  Some of the more pricey ones will include hard 
keying circuits for FSK RTTY and CW,  as well as other bells and whistles.

Some, like the Signal Link USB, contain it's own sound card, so the pc 
sound card isn't used.

For most of us using screen readers, the tough part is  getting the 
incoming  signal decoded and read properly  by the screen reader.    You 
don't need an interface to experiment with the rx side of these modes 
and see what works and what modes you may like.  Just a simple audio 
cable from rig's audio output to pc sound card input.  If you can 
receive and copy,then  transmitting is a piece of cake through the 
interface.

BTW, I as well as others on the list use the Signal Link USB.   I also 
have a Rascal from Bux Com, which lets me do FSK RTTY, which the Signal 
Link won't do.

73, Steve  KW3A

On 1/11/2011 5:54 PM, john vernaleken wrote:
> I am just starting to research trying some Digital modes. The more I read the more I get confused. What is the difference between  Signalink an Rig Blaster, there is a big price difference. I want to compare apples to apples, not sure where to start.
>
>
> Thanks
>
> John  KC2QJB
>