[Elecraft] Setting TX Levels for Digital Modes

[Don Wilhelm]

Jim,

If you follow Jim Brown's advice in his RFI tutorial, you do not need to 
go the the expense of a RigBlaster or SignaLink at all - a good quality 
external soundcard will do the job at a much lower price.

Bond the computer and the radio together as Jim advises, and transformer 
isolation will not be necessary, just a higher quality soundcard for the 
computer.

OTOH, if you also want the other features of the Rigblaster, that is a 
'horse of a different color' - the Rigblaster will do an adequate job as 
a soundcard for digital modes (but it may not be the lowest noise level 
soundcard).

73,
Don W3FPR

On 6/27/2013 8:56 PM, Jim Lowman wrote:
> Jim, would a RigBlaster be a better choice in the case that you 
> mentioned, instead of the SignaLink?
>
> 72/73 de Jim - AD6CW
>
>> Another observation.  A few years ago, I surveyed low cost USB sound 
>> cards sold for use in the home studio and DJ market, found several 
>> that looked promising, and bought two of them. Both made significant 
>> improvements in the DECODING of digital signals, and also cleaned up 
>> the computer's TX audio. These were NOT expensive units -- a little 
>> Numark unit ($35 at B&H Photo) worked just as well as a $75 Tascam. 
>> And, unlike the more expensive SignalLink, which has Pin One Problems 
>> that cause RFI, the Numark and the Tascam are free of these problems.
>>
>> 73, Jim K9YC
>>
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