|
Spectogram
| |
Actual Satellite Transmissions!
Jim Giammanco (N5IB) recorded the following transmissions of the RS-12 satellite from his home.
NOTE: If you get garbage when you click on one of these files, right click on it and choose "Save As".
Then open it
and an appropriate program should load to play the file.
|
WAV (8Mb)
MP3 (6Mb) |
This one is the whole 15 minute pass - about 8 MB - Doppler shift is evident
|
WAV (2Mb)
MP3 (1Mb) |
This one is 10 sec sampled out of every 60 sec for the pass - about 2 MB -
doppler is very evident
|
WAV (533 Kb)
MP3 ( 97 Kb) |
This is a short clip, with the call "de W5YW" (_.. . .__ ..... _.__.__),
the LSU station callsign, being relayed by RS-12 back to Earth. I
transmitted the signal to the satellite on 145.930 MHz and it sent the
signal back down on 29.430 MHz. The "de" is what hams send to mean "from,"
taken from the French, so this signal means "from W5YW." Had someone else
heard this signal we might have communicated 2-way through the satellite. |
To Use:
If you have high-speed internet or you are very patient...
If you have a high speed connection or are a little more patient, you may download the entire WAV file and feed it directly to the program (like
SpectGram). This is easier than the alternative below...
However, the procedure below is nearly identical to that which will be required for all users of the webradio
(when it gets online), so now may be a good time to practice on these files....
If you are on a modem:
If you are on a low speed connection you can download the MP3 version (assuming you have something like
WinAmp on your computer). Then you can play the
MP3 and have the program (like SpectGram) scanning your soundcard's input (as if you had a microphone). But you will go into the sound volume controls and set the recording input to be the WAVE device.. This makes any software that tries to listen to something listen to the MP3 being played instead of typically the microphone.
Good Luck!
|
