Reminds me of my early days on HF, with other hams on the local VHF
repeater while comparing low-band antennas.
"Now I can hear a japanese station on 160. He's very strong with my new
antenna."
"Here, too. What did you think. But I can also hear three ZL's and four
VKs in the background".
.. etc etc.
If you know exactly who's out there, where and when, you can also hear
him without any difficulty. Similar applies to smart black boxes.
73, happy christmas and hope to cul via real airwaves,
Wolf .
Am 25.12.2015 um 19:33 schrieb Jacek Lipkowski:
On Thu, 24 Dec 2015, mal hamilton wrote:
DIGI MODES
Fall asleep over the keyboard
Go for Xmas Dinner
Go down the pub and get drunk
Sleep for a week
Little does he know that the magical black box spawns radio waves no
more! The collector current is zero due to a burnt out fuse. Only
miliwatts from the driver make their way to the antenna. Only the
nearest stations decode it.
But look: Christmas is a magical time and anything can happen. The
digital mode is sent by a closed-source application. There is no
formal documentation from the author and we can't look at the source.
Since we really don't know what it does, the author implemented yet
another trick to show long range decodes. The transmitting station's
application covertly sends this data to the author's server. Randomly,
with very low probability the author's server commands the receivng
station's programs to decode the station even if nothing is being
received.
"Look! I'm being decoded in Australia! The ultimate MF DX!" screams
the digital operator, seeing his christmas wish come true.
VY 73
Jacek / SQ5BPF
PS. the receiver didn't work either, but we have good propagation on
the internet today
|
