"rickman" wrote in message
...
Do digital receivers get discussed here much? I am working on a receiver
for the WWVB signal at 60 kHz and am looking at a very low power all
digital design in an FPGA. Of course some aspects are still analog such
as the antenna. I have been reading about loop antennas for low frequency
work. I don't plan on having an analog amplifier unless it is needed. I
may be able to sample the RF signal directly and use processing to boost
the signal out of the noise.

Has anyone done anything like this? Right now I am looking at how to
synchronize the sample rate with the carrier so that I can accumulate the
signal in a coherent manner.

Any pointers on where I could find more info?

Rick

PS I posted this to rec.radio.amateur.equipment by mistake. I don't that
is the right group for home made equipment.

Yikes! Here you over here too!
Loop antennas sure have more "capture area" than ferrite loopsticks,
using "seat of the pants" engineering, I always wondered just how the
marked directivity of the loop antenna could be put to use in a "dual
Diversity"
scheme for noise cancelling. It was used (and perhaps still is) for
"selective
fading" and interference rejection on large, HF antenna farms.
Marine and aircraft beacon band receivers used both rotatable loops
and loopsticks in conjunction with a "sense" antenna for enhanced
directional reception.
I'm over my head, so I'm bailing. Please keep us informed of progress!

Old Chief Lynn