On 5/31/2012 2:27 PM, Ed Muns wrote: > The YCCC SO2R box has all the disadvantages that Joe has outlined plus > it requires an external level translator circuit for FSK.
FSK is not important to everyone. It isn't to me, even though I'm an active RTTY contester. And it's trivially easy to do SO2R AFSK with any decent sound card with major contest loggers. . . > That detracts > from the advantage of an integrated box and lowered my confidence in the > design choices made in this unit. I strongly disagree with your implication that the YCCC box designer(s) were not very good. They WERE, and the box is really well thought out operationally. They simply have different priorities than you do. :) My only fault with it is that the designer(s) are totally ignorant of the fundamentals of shielding, but there's so little active circuitry in it that it doesn't matter. I'm using a pair of low cost USB audio interfaces to feed K3 audio to a couple of computers for RTTY decoding. I have no comments on Joe's boxes -- I've never used one nor felt the need to do so. And what I've seen of the DXDoubler at stations where I've operated strongly suggests that it's got Pin One Problems, which can cause hum, buzz, and RFI issues. 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
