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moon_bounce_data

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Moon Bounce Data

On November 2, 2019 a miracle occurred. I found the Moon bounce data!

The broadcast was April 1, 2016.

The WAV files they broadcast are here:

https://jrseti.com/data/moon-bounce-wav-files/test_bpsk1000.wav https://jrseti.com/data/moon-bounce-wav-files/test_bpsk250.wav https://jrseti.com/data/moon-bounce-wav-files/test_bpsk31.wav

Here is the mail sent to Gerry harp about these files to transmit:

Gerry,

I have attached a few .WAV files as examples of what we might transmit. These are shorter than the 1-minute files

we could actually transmit at full power.

Each file uses binary phase-shift keying of a 1500 hz audio carrier wave to transmit ASCII text.

File test_bpsk31.wav uses 31 Hz bandwidth, test_bpsk250.wav uses 250 Hz, and test_bpsk1000.wav 
uses 1000 Hz. Bandwidths of 63, 125, 250, and 500 Hz are also available. Data bit rates are 
the same as the bandwidths. At the end of each file is our station identifier "DE VA7MM" in morse code. 
We have to periodically transmit the identifier.

These are signals that ham operators use on frequencies from 1.8 MHz up to 1 GHz. We don't use them for moonbounce,

as the moon path SNR is too low and phase distortion is too high. See https://en.wikipedia.org/wiki/PSK31 for a 
description of the test_bpsk31.wav signal.
 
Our SSB transmitter will up-shift these signals to a center frequency of 1295.995 MHz.
 
The files were generated using a free windows program "FLdigi" that can be found here:
 
https://sourceforge.net/projects/fldigi/files/
http://www.w1hkj.com/FldigiHelp/index.html
 
Let me know if these signals are worth a try. We could be ready to transmit on the weekend of April 1 if you want.
 
Toby
moon_bounce_data.1572747140.txt.gz · Last modified: 2019/11/03 02:12 by jrseti