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#1
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![]() I'm not clear on marine SSB radios. Can someone explain how they differ from standard VHF? A friend is now offering me a pretty expensive Icom SSB. I doubt I have a need for it, but it's basically free. I may just tell him to sell it on ebay. I was thinking of adding a AM/SSB (CB) radio to the boat which would be better than the GMRS. So can someone explain what the marine SSB is? Is it VHF with upper and lowers? Thanks in advance... RB |
#2
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VHF radio is FM which is the modulation of a sine wave carrier so that the
instantaneous frequency differs from the carrier frequency by an amount proportionate to the instantaneous amplitude of the modulating wave. Single sidebandband suppressed carrier modulation is a form of amplitude modulation whereas the carrier frequency and one sideband of the modulated carrier is suppressed. For S/N the NBFM (VHF) performance is the same as DSB-AM in the presence of white noise. The SSB performance is superior to both and to SSB-AM because all the signal power is is placed into a narrower spectral band than the former. SSB detection requires the use of synchronous demodulation, preferably with phase synchronization, otherwise a Donald Duck type voice appears. Since you never venture far offshore, dixie cups with strings will provide more than adequate performance. RB "Bobsprit" wrote in message ... I'm not clear on marine SSB radios. Can someone explain how they differ from standard VHF? A friend is now offering me a pretty expensive Icom SSB. I doubt I have a need for it, but it's basically free. I may just tell him to sell it on ebay. I was thinking of adding a AM/SSB (CB) radio to the boat which would be better than the GMRS. So can someone explain what the marine SSB is? Is it VHF with upper and lowers? Thanks in advance... RB |
#3
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Since you never venture far offshore, dixie cups with strings will provide
more than adequate performance. I already have top of the line Icon Dixie cups, #151V, but thanks! RB |
#4
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Gilligan,
Could you possibly switch to another personality... it's just too confusing to read two totally different viewpoints from bob... one rational, the other foolish and stupid. "Bobsprit" wrote in message ink.net... VHF radio is FM which is the modulation of a sine wave carrier so that the instantaneous frequency differs from the carrier frequency by an amount proportionate to the instantaneous amplitude of the modulating wave. Single sidebandband suppressed carrier modulation is a form of amplitude modulation whereas the carrier frequency and one sideband of the modulated carrier is suppressed. For S/N the NBFM (VHF) performance is the same as DSB-AM in the presence of white noise. The SSB performance is superior to both and to SSB-AM because all the signal power is is placed into a narrower spectral band than the former. SSB detection requires the use of synchronous demodulation, preferably with phase synchronization, otherwise a Donald Duck type voice appears. Since you never venture far offshore, dixie cups with strings will provide more than adequate performance. RB "Bobsprit" wrote in message ... I'm not clear on marine SSB radios. Can someone explain how they differ from standard VHF? A friend is now offering me a pretty expensive Icom SSB. I doubt I have a need for it, but it's basically free. I may just tell him to sell it on ebay. I was thinking of adding a AM/SSB (CB) radio to the boat which would be better than the GMRS. So can someone explain what the marine SSB is? Is it VHF with upper and lowers? Thanks in advance... RB |
#5
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"Bob****" wrote ...
I'm not clear on marine SSB radios. one more for the list Can someone explain how they differ from standard VHF? A friend is now offering me a pretty expensive Icom SSB. A n00bie would ask, ''why don't you ask your 'friend' to splain it?''. The rest of us realize this is yet one more in a long line of lame trolls form the master bull****ter. SV |
#6
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I was getting confused too.
"Jonathan Ganz" wrote in message ... Gilligan, Could you possibly switch to another personality... it's just too confusing to read two totally different viewpoints from bob... one rational, the other foolish and stupid. "Bobsprit" wrote in message ink.net... VHF radio is FM which is the modulation of a sine wave carrier so that the instantaneous frequency differs from the carrier frequency by an amount proportionate to the instantaneous amplitude of the modulating wave. Single sidebandband suppressed carrier modulation is a form of amplitude modulation whereas the carrier frequency and one sideband of the modulated carrier is suppressed. For S/N the NBFM (VHF) performance is the same as DSB-AM in the presence of white noise. The SSB performance is superior to both and to SSB-AM because all the signal power is is placed into a narrower spectral band than the former. SSB detection requires the use of synchronous demodulation, preferably with phase synchronization, otherwise a Donald Duck type voice appears. Since you never venture far offshore, dixie cups with strings will provide more than adequate performance. RB "Bobsprit" wrote in message ... I'm not clear on marine SSB radios. Can someone explain how they differ from standard VHF? A friend is now offering me a pretty expensive Icom SSB. I doubt I have a need for it, but it's basically free. I may just tell him to sell it on ebay. I was thinking of adding a AM/SSB (CB) radio to the boat which would be better than the GMRS. So can someone explain what the marine SSB is? Is it VHF with upper and lowers? Thanks in advance... RB |
#8
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Thanks
"Milos Forman" wrote in message nk.net... I was getting confused too. "Jonathan Ganz" wrote in message ... Gilligan, Could you possibly switch to another personality... it's just too confusing to read two totally different viewpoints from bob... one rational, the other foolish and stupid. "Bobsprit" wrote in message ink.net... VHF radio is FM which is the modulation of a sine wave carrier so that the instantaneous frequency differs from the carrier frequency by an amount proportionate to the instantaneous amplitude of the modulating wave. Single sidebandband suppressed carrier modulation is a form of amplitude modulation whereas the carrier frequency and one sideband of the modulated carrier is suppressed. For S/N the NBFM (VHF) performance is the same as DSB-AM in the presence of white noise. The SSB performance is superior to both and to SSB-AM because all the signal power is is placed into a narrower spectral band than the former. SSB detection requires the use of synchronous demodulation, preferably with phase synchronization, otherwise a Donald Duck type voice appears. Since you never venture far offshore, dixie cups with strings will provide more than adequate performance. RB "Bobsprit" wrote in message ... I'm not clear on marine SSB radios. Can someone explain how they differ from standard VHF? A friend is now offering me a pretty expensive Icom SSB. I doubt I have a need for it, but it's basically free. I may just tell him to sell it on ebay. I was thinking of adding a AM/SSB (CB) radio to the boat which would be better than the GMRS. So can someone explain what the marine SSB is? Is it VHF with upper and lowers? Thanks in advance... RB |
#9
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You stupid, no explain need.
"Horvath" wrote in message ... On 14 Dec 2003 14:48:40 GMT, (Bobsprit) wrote this crap: I'm not clear on marine SSB radios. Can someone explain how they differ from standard VHF? A friend is now offering me a pretty expensive Icom SSB. I doubt I have a need for it, but it's basically free. I may just tell him to sell it on ebay. I was thinking of adding a AM/SSB (CB) radio to the boat which would be better than the GMRS. So can someone explain what the marine SSB is? Is it VHF with upper and lowers? Thanks in advance... RB How stupid are you? SSB is AM. VHF is FM. Want me explain the difference between cable and satellite dish? This signature is now the ultimate power in the universe |
#10
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![]() Horvath wrote: On 14 Dec 2003 14:48:40 GMT, (Bobsprit) wrote this crap: I'm not clear on marine SSB radios. Can someone explain how they differ from standard VHF? A friend is now offering me a pretty expensive Icom SSB. I doubt I have a need for it, but it's basically free. I may just tell him to sell it on ebay. I was thinking of adding a AM/SSB (CB) radio to the boat which would be better than the GMRS. So can someone explain what the marine SSB is? Is it VHF with upper and lowers? Thanks in advance... RB How stupid are you? SSB is AM. VHF is FM. Want me explain the difference between cable and satellite dish? Are you saying SSB is carried by cable or by satellites? Cheers MC |
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