4 ms·
Oh, it can easily be mindbogglingly expensive, but it can be done on a (relative) shoestring, too. (Though arguably, to some extent, going cheap just means you
by lb1lf 9y ago
Oh, it can easily be mindbogglingly expensive, but it can be done on a (relative) shoestring, too. (Though arguably, to some extent, going cheap just means you are leeching off someone else, as the guy at the other end will need a bigger everything to make the signal to noise ratio acceptable at both ends.)
I've tried it a few times, out of pocket expense was way less than $1k - using software to generate smart modulation schemes like JT65b, you can get performance orders of magnitude better than what a human ear can pick up - leading to orders of magnitude less impressive - cough - stations.
Costs were more or less like this:
Computer - $0. (Already had one for other purposes)
Software - $0. (Gotta love freeware!)
Soundcard interface - $30 in parts
Transceiver - $250 (Early nineties vintage)
150W solid-state amplifier, 2nd hand - $40, needed fixing.
Low-loss feedline - $65, plus a couple of hours in the car to pick it up.
Mast - $0 (Repurposed an old flagpole)
Antenna - $180 (DIY 2x12 element yagis. Cost of materials)
Now, this is a bare-bones setup - more power and more antenna would make life a lot easier. Also, it would be nice to be able to rotate the antennas (Now I just aim for where the moon will rise and wait for it to whizz by)
However, it works. After a fashion.