Video Uplink Transmitter
We just got in a very interesting recording from a friend of Metageek in Greece.
Here's what our customer had to say about it:
Capture with external directional 20dbi grid antenna. Local AP at channel 5, some distant APs at channel 6 and channel 11.
Strong interference that makes the use of any AP impossible. (Client with -55db signal cannot connect to local AP)
Unknown distance from the transmitting source.
Strange signals near channel 1,12 and between 6-9. When we point the antenna to the opposite direction, values are lower (between 1.30min-2.00min in the capture file).
Continuous transmission 24 hours per day.
Does anyone have an idea what the source of these transmissions might be? If so, sound off in the forum thread dedicated to the topic.
**Thanks to SPIFFYJUMPER it looks like this has been resolved!:
the Frequency Span is about 4x what it should be, indicating that
this may be a Fourth Harmonic of an Analog TV Signal (the 4th Harmonic would be 4x the actual frequency for each frequency in the span, therefor, the resulting wafeform would be four times as wide.It sure *looks* like a broken Broadcast Transmission System to me.