Thursday, 15 July 2010
OFDM Tone correction
Rather than increase the filter length I decided to add compensation to
the outer tones of the OFDM signal to mitigate the filter roll off. The results
can be seen above.
I dug out an old LWM electronics universal local oscillator and retuned it
to produce about 2mW at 725 MHz. I will probably use that in my receive
I am still waiting for the lead so I can make my first HD transmission.
The only other activity worth mentioning is that I managed to get
Linux to recognise and load the firmware for one of those USB
DVB-T receivers. The applications MyTV and Kaffeine don't seem to
allow manual control of the Dongle. I guess they never had me in mind!