Am i doing something wrong?

[jonnytdevops]

Hi Folks

I would really appreciate some advice. I simply cannot get rpidatv to work properly. Watching the numerous youtube demos, it seems very easy. I would like to use RF (GPIO) mode. I am trying to use a single Pi for send and receive.

On the transmit side, I have been using a variation of this command:

./rpidatv -i result.ts -s 1000 -c 3/4 -f 434.0 -l -p 7 -x 12 -m RF

And on the receive side, this command:

rtl_sdr -f 434000000 -s 3200000 -g 0 -p 78 - | ./leandvb --fastlock --gui -v --sr 1250000 --cr 5/6 | vlc -

I have tried the following to no avail:

• Lower symbol rates (150, 250, 333)
• Different receive sample rates (2.4Msps and 3.2 Msps)
• Different 'cr' values (1/2, 3/4)
• Plugging a wire directly from my GPIO pin to my SDR input
• Trying GPIO 12 and 18
• Changing the RTL-SDR (currently have 2 NooElec models)
• Change the Pi (2B and 3B+ - same SD card/OS though)
• 4 different TS files (result.ts (which is just the sample blank color pages) from avc2ts, one I had lying around, one from a link in another issue in this repo, and an H264 TS I downloaded from the internet)

The best I've got, and it only does this maybe 10% of the time, are a couple of frames here or there.

The only thing I will say, is that I live quite close to an AM transmitter (within a few miles), however I have also tried putting an AM filter on the input.

My OS is: Raspbian Stretch with desktop and recommended software Version:November 2018 Release date:2018-11-13 Kernel version:4.14

Does anyone have any ideas? I must be doing something wrong?

I can confirm that rpitx works as expected.

Thanks

JT