Voluntary Channelization
Since Olivia signals can be decoded even when received signals are extremely weak, (signal to noise ratio of -14db), signals strong enough to be decoded are sometimes below the noise floor and therefore impossible to search for manually. As a result amateur radio operators have voluntarily decided upon channelization for this mode. This channelization allows even imperceptibly weak signals to be properly tuned for reception and decoding. By common convention amateur stations initiate contacts utilizing either the 16/500 or 32/1000 modes and then switch to other modes to continue the conversation. The following table lists the common center frequencies used in the amateur radio bands.
| Band | 16/500 Frequencies (KHz) | 32/1000 Frequencies (KHz) |
|---|---|---|
| 160 Meters | 1808.75, 1809.25, 1840.75, 1841.25 | N/A |
| 80 Meters | 3577.75, 3583.25, 3522.75 | 3578.0, 3616.0, 3523.0, 3621.0 |
| 40 Meters | 7026.25, 7043.25, 7073.25, 7076.75 | N/A |
| 30 Meters | 10139.25, 10142.25, 10143.25 | N/A |
| 20 Meters | 14076.4, 14075.4, 14078.4 | 14106.5, 14107.5, 14108.5 |
| 17 Meters | 18103.4, 18104.4 | N/A |
| 15 Meters | 21087.25, 21087.75, 21130.25 | 21153.5, 21154.5 |
| 12 Meters | 24922.25 | N/A |
| 10 Meters | 28076.75, 28077.25 | N/A |
| 6 Meters | 50087.25, 50287.25, 50292.25 | N/A |
| 2 Meters | 144136.25 | N/A |
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Famous quotes containing the word voluntary:
“All religions have based morality on obedience, that is to say, on voluntary slavery. That is why they have always been more pernicious than any political organisation. For the latter makes use of violence, the former—of the corruption of the will.”
—Alexander Herzen (1812–1870)