Where can I get a copy of that program?.. Larry ve3fxq ----- Original Message ----- From: "Jose A. Amador" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Monday, May 28, 2007 3:16 PM Subject: Re: [digitalradio] Re: HSCW Bandwidth?
> > Tony, > > You could use any program that uses a spectrum display. > > Among the serious ones, Spectran comes to my mind. > It is free and quite good. > > 73, > > Jose, CO2JA > > ---- > > Tony wrote: > >>> What speed do you have in mind? >> >> 1000 to 1500 letters per minute; 200 to 300 wors per minute. >> >>> The word PARIS used as a standard for measuring words per minute >>> contains 50 code elements so one word per second, 60wpm, is 50 >>> baud. >> >> Right; the 'standard' formula; BW = 4 x wpm, (e.g., 200wpm = 800hz) >> >>> The bandwidth it takes to transmit that depends on the modulation >>> method and how much shaping you apply to the signal. >> >> The keying method would be injected audio tone using a sound card >> program specifically for HSCW (MSDSP 2000). The shaping would not be >> done by the circuits of the rig. >> >> It's my understanding that there is less bandwidth using the tone >> injected method, but not sure how to measure it. >> >> Thanks, >> >> Tony KT2Q > > > > > __________________________________________ > > V Conferencia Internacional de Energía Renovable, Ahorro de Energía y > Educación Energética. > 22 al 25 de mayo de 2007 > Palacio de las Convenciones, Ciudad de la Habana, Cuba > http://www.cujae.edu.cu/eventos/cier > > Participe en Universidad 2008. > 11 al 15 de febrero del 2008. > Palacio de las Convenciones, Ciudad de la Habana, Cuba > http://www.universidad2008.cu >
