Hi Folks,
I've now got a very nice cable modem tuner module (eval board) hooked
into GNU Radio. From a hardware point of view it was a zero glue
operation. Just a couple of cables and rigging up a power supply.
FYI, it's a Microtune 4937DI5 3x7702 module. Tunes from 50M to 860M
and has about a 6MHz wide IF centered at 5.75M. Very convenient for
our 20M sample A/D board. Cables right up. You control it by bit
banging it over the parallel port. It has a I2C interface plus a few
additional bits.
I've attached some FFT graphs from various parts of the spectrum.
Lots of good stuff to work with. The center of the IF is indicated at
5.75MHz. The displayed frequency axis values don't currently take