Olivia MFSK is an amateur radioteletype protocol, using multiple frequency-shift keying MFSK and designed to work in difficult low signal-to-noise ratio plus multipath propagation conditions on shortwave bands. The signal can be accurately received even if the surrounding noise is 10 dB stronger. The protocol was developed at the end of by Pawel Jalocha. The tests proved that the protocol works well and can allow regular intercontinental radio contacts with as little as one watt RF power.
But what does a HSCW ping sound like? Sound samples of digital transmissions Sound samples of the transmission modes recorded at samples per second, mono and the message in all of the samples is the same: "the quick brown fox jumps over the lazy dog ". Numbers Stations About numbers stations, and their criptic transmissions, where to listen to them and some audio recording samples by fascinating shortwaves Ham Radio Sounds Links 50 Mhz Sounds - Large collection by vk2qf [ Hits: Votes: 34 Rating: 2. This is your chance!
This site's goal is to present information to help digital amateur radio operators better understand and be able to more efficiently use the different Olivia digital mode configurations. This Olivia information page is NOW also including information for the Contestia digital mode which is derived from Olivia and has some advantages and disadvantages of it's own. The signal can be decoded even when it is db below the noise floor i. Currently the only other digital modes that match or exceed Olivia in sensitivity are some of the WSJT program modes that include JT65A which are certainly limited in usage and definitely NOT ragchew capable.
Since there are only tones in THOR micro, the number simply wraps around back to 0 when it reaches number The current tone always has 2 added before transmitting. This introduces a known pattern within the signal that benefits soft-decision decoding, boosts the forward error correction, and improves resistance to intersymbol interference. Search this site.