search

fsphil / hacktv

Analogue TV transmitter for the HackRF
GNU General Public License v3.0
721 stars 84 forks source link

Vertical stripes during signal transmission at -s 16000000 #115

Open nerevist opened 3 months ago

nerevist commented 3 months ago

I transmit an analog signal using the HackTV build for Windows. Both the fsphil assembly and the Captain Jack assembly have vertical stripes. 240711-223454-735 240717-124342-417

fsphil commented 3 months ago

This seems to be an issue with recent revisions of the hackrf hardware. Can you run hackrf_info and copy the output here?

nerevist commented 3 months ago

image

fsphil commented 3 months ago

Huh, I was sure hackrf_info showed the board revision, but I don't see it there. Anyway, the hackrf r9 is known to have those lines at certain sample rates, including the default of 16 MHz. Try using different sample rates, such at 15 or 17 MHz.

nerevist commented 3 months ago

Try using different sample rates, such at 15 or 17 MHz.

On 15 MHz all normal, but on 17 MHz picture and sound bugged