Yet another PSK31 setup

IMG 0515

I’m still experimenting with PSK and this is a quick snapshot of the setup I was playing with today. Again, cheap and quick and dirty, using stuff I already had in the house; my Macbook and the USB microphone adaptor plugged into the Kenwood.

This system works a lot better than the iPad version did for several reasons. First, the audio output quality of the laptop is better, allowing me to turn on the radio’s VOX system so it transmits automatically when I want to send something. Second, the Macbook is much, much more powerful, and the software’s level of sophistication reflects that.

Screen Shot 2013 03 30 at 10 15 56 PM

I’m running Fldigi on the Macbook and it works quite well indeed. All of the iPad apps I’ve seen are limited to working with a single type of digital communication; RTTY, PSK, CW, etc. Fldigi works with all of them. Plus it includes an enormous number of bells and whistles, like built in logging capabilities and, if you have the right interface, even control of the radio right from the program itself.

Unlike the iPad software I was running, Fldigi doesn’t just decode the selected stream in the waterfall, it decodes all of them, at the same time. In the screen image above, it’s simultaneously decoding four separate transmissions at the same time. 

The question, of course, is does it work? And the answer is yes, even with the cobbled together setup I’m using here. In the short time I was playing around with it, I made two contacts, one in Oregon, the other in California. And that was with my transmit power dialed down to 25 watts, and feeding my Comet vertical antenna, which some people claim is little more than an over priced dummy load.

(Interestingly, I’ve made far more contacts with PSK31 running my cobbled together equipment than I have on voice)

Once I get the actual interface between the computer and radio up and running, this could get real interesting.

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