Dunque, Luigi,
ho seguito per tanto tempo le vicende del dibattito di Abrate sul newsgroup sci.space.history.
A parte alcuni arrogantissimi provocatori, il nostro Abrate non è stato trattato troppo male.
Eppure, nonostante ripetuti inviti andati avanti per mesi, non è mai riuscito a scendere nei dettagli riguardanti le sessioni di ascolto dei fratelli Judica-Cordiglia.
Ha sempre chiesto di crederci, sostanzialmente, perchè le cose stavano così.
Insomma, che fatica poteva costare ad Abrate, che tra l’altro è il curatore del sito lostcosmonauts.com, pubblicare in maniera inequivocabile date, ore, frequenze, insomma, chiedere ai fratelli JC di fornirgli il materiale per far cessare la marea di illazioni che circondano tutta questa vicenda?
Io poi diffido per natura delle affermazioni “auto referenziali” come questa, nel mesaggio che ci hai linkato:
".....according to the Judica Cordiglia brothers, signals from the same space capsule were also received by Heinz Kaminski of the Bochum Observatory and by Prof. John M. Sharp of El Paso. Many newspapers and News Agencies....."
Insomma, non voglio dare del “truffatore” a nessuno, d’altra parte i fratelli JC non vendono nulla; tuttavia io non trovo alcun elemento concreto a sostegno delle loro dichiarazioni, mentre aspetto ancora commenti, da parte di tutti, all’analisi condotta da Sven Grahn che ho linkato appositamente perchè contiene interessanti elementi di lettura, soprattutto riguardo i dati delle frequenze che i fratelli JC hanno dichiarato di usare.
As far as I can tell from the "Radiospazio" issues, the "heartbeat" and "heavy breathing" files were recorded at 2255 (Central European Time?) on 2 February 1961. However, even the "Radiospazio" issues contain very sketchy logs of these and other receptions and vague data as to reception frequencies ("around [intorno ai] 20 MHz"). Concerning the "breathing" and "heartbeat" signals I would like to note that heart rate and breathing was never transmitted directly on the Vostok/Voskhod voice link. Instead this data was transmitted in the way described at my Web site ("Biomedical telemetry"). (You can hear the heartbeat of Valery Bykovsky as interruptions in the CW signals from Vostok-5). A key question is: Why would the failed flights use a different transmission system compared to the successful ones?
Much later, at the end of the 70’s, electrocardiogram signals were transmitted on the Salyut 6 voice link, but then the signal was easily recognizable as ECG.
Un’altra interessante fonte di lettura e approfondimento sulla questione:
da cui traggo
Beside the tracking and the audio channels, telemetric medical datasets were sent in FSK-PDM or CW-PDM mode. FSK mode is a very efficient method of transmission because, like CW, it uses a very narrow bandwidth (~1 kHz) and could easily be heard far beyond the horizon and through interference. At some occasions, FSK signals travelled all around the Earth thanks to ducting properties of the ionosphere layers.
The FSK-PDM mode is supplemented by the two TV cameras (remember Gagarin), which provided a frontal and a profile view of the actions and reactions of the cosmonaut in orbit.
We can see on the drawing displayed at right that Vostok orbiter was equipped of four large stick antennas of approximatively one meter long, displaying thus broadband characteristics (tubing of large diameter), and tuned on VHF frequencies. From a CIA article entitled “Snooping on Space Picture” published in “Studies in Intelligence” in 1964, we learnt that these TV antennas worked on 83 MHz, thus the antennas were cut at l/4.
The telemetry was sent on 19,995 MHz or 20,008 MHz or a near frequency. Later, telemetry signals from Cosmos orbiters were sent at 66.2 MHz wideband (Cosmos 353, 1970) as well as on digital format at 19,150 MHz (Cosmos 376, 1970). A two-tone biomedical beacon sounding like Morse code was also transmitted at 19,948 or 19,995 MHz or a near frequency.
Sensors attached to the cosmonaut’s body under the suit recorded pulse, respiration, blood pressure and electrocardiogram. It is obvious that these data cannot be transmitted by voice. There is however one mission at least during which the voice channel carried out biomedical data. On May 11, 1979 Salyut-6 transmitted electrocardiograms on the voice channel on 121.75 MHz. But at that time Torre Bert was already dismantled for a decade.
A voi la palla.
)
Questa, invece, la sapevo.