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#11
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The problems with a satellite solution are cost, weight and power. I want to
be able to carry the whole thing backpack for several hundred km and for it to operate on battery power. There is a commercial HF SSB station in Sydney for marine radio - it looks like I would be using this if I was in the eastern states of Australia (ultimately I want to do an extended trek along the Vic/NSW alpine trail). This is mainly remote mountainous country with occasional 4WD tracks and roads and very few settlements. I have loked at the SSB radio options - the best seems to be the SCS transceiver, but Rx current is still 100mA. I would probably use a PalmPilot as the computer part with an interface to this. Here in WA there doesnt seem to be any options (we are 3000km from the eastern seaboard). All in all a big project! Richard Laura Halliday wrote in message om... "Richard Hosking" wrote in message .au... No doubt this is an easy question, but is there a way of interfacing to the web via HF SSB/data? I want to be able to do this from a remote location portable/backpack with no mobile phone access and low power. The nearest infrastructure could be several hundred km away I could use amateur bands or possibly a commercial solution if available. What would be the data format and where would I get more info on this? This shoulds like a job for a satellite. If worst comes to worst, plug a modem in to a satellite phone and dial up your ISP... The first UoSATs were for exactly this sort of application: take a briefcase-sized station in to the field and send chitchat back to home base by satellite, completely independent of terrestrial infrastructure, which may not exist anyway. We have satellite Internet here in Canada. It isn't cheap. Laura Halliday VE7LDH "Que les nuages soient notre Grid: CN89mg pied a terre..." ICBM: 49 16.05 N 122 56.92 W - Hospital/Shafte |
#12
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![]() "Richard Hosking" wrote in message . au... No doubt this is an easy question, but is there a way of interfacing to the web via HF SSB/data? I want to be able to do this from a remote location portable/backpack with no mobile phone access and low power. The nearest infrastructure could be several hundred km away I could use amateur bands or possibly a commercial solution if available. What would be the data format and where would I get more info on this? Thanks Richard I'm aware of a service that provides e-mail on commercial HF frequencies to safari camps in Botswana from a base in Johannesburg in South Africa. AFAIK they use Pactor. Many of these camps are several hundred miles from the nearest phone line. (My cousin worked in some of the camps) 73 Roger ZR3RC |
#13
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![]() "Richard Hosking" wrote in message . au... No doubt this is an easy question, but is there a way of interfacing to the web via HF SSB/data? I want to be able to do this from a remote location portable/backpack with no mobile phone access and low power. The nearest infrastructure could be several hundred km away I could use amateur bands or possibly a commercial solution if available. What would be the data format and where would I get more info on this? Thanks Richard I'm aware of a service that provides e-mail on commercial HF frequencies to safari camps in Botswana from a base in Johannesburg in South Africa. AFAIK they use Pactor. Many of these camps are several hundred miles from the nearest phone line. (My cousin worked in some of the camps) 73 Roger ZR3RC |
#14
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Have you considered adding a solar cell or two the station. I am using a
much smaller radio, but a 15 watt cell has me battery independent. A 1.4 watt cell maintained enough charge on the gel-cell for me to operate field day weekend. -- 73 es cul wb3fup a Salty Bear "Richard Hosking" wrote in message . au... The problems with a satellite solution are cost, weight and power. I want to be able to carry the whole thing backpack for several hundred km and for it to operate on battery power. There is a commercial HF SSB station in Sydney for marine radio - it looks like I would be using this if I was in the eastern states of Australia (ultimately I want to do an extended trek along the Vic/NSW alpine trail). This is mainly remote mountainous country with occasional 4WD tracks and roads and very few settlements. I have loked at the SSB radio options - the best seems to be the SCS transceiver, but Rx current is still 100mA. I would probably use a PalmPilot as the computer part with an interface to this. Here in WA there doesnt seem to be any options (we are 3000km from the eastern seaboard). All in all a big project! Richard Laura Halliday wrote in message om... "Richard Hosking" wrote in message .au... No doubt this is an easy question, but is there a way of interfacing to the web via HF SSB/data? I want to be able to do this from a remote location portable/backpack with no mobile phone access and low power. The nearest infrastructure could be several hundred km away I could use amateur bands or possibly a commercial solution if available. What would be the data format and where would I get more info on this? This shoulds like a job for a satellite. If worst comes to worst, plug a modem in to a satellite phone and dial up your ISP... The first UoSATs were for exactly this sort of application: take a briefcase-sized station in to the field and send chitchat back to home base by satellite, completely independent of terrestrial infrastructure, which may not exist anyway. We have satellite Internet here in Canada. It isn't cheap. Laura Halliday VE7LDH "Que les nuages soient notre Grid: CN89mg pied a terre..." ICBM: 49 16.05 N 122 56.92 W - Hospital/Shafte |
#15
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Have you considered adding a solar cell or two the station. I am using a
much smaller radio, but a 15 watt cell has me battery independent. A 1.4 watt cell maintained enough charge on the gel-cell for me to operate field day weekend. -- 73 es cul wb3fup a Salty Bear "Richard Hosking" wrote in message . au... The problems with a satellite solution are cost, weight and power. I want to be able to carry the whole thing backpack for several hundred km and for it to operate on battery power. There is a commercial HF SSB station in Sydney for marine radio - it looks like I would be using this if I was in the eastern states of Australia (ultimately I want to do an extended trek along the Vic/NSW alpine trail). This is mainly remote mountainous country with occasional 4WD tracks and roads and very few settlements. I have loked at the SSB radio options - the best seems to be the SCS transceiver, but Rx current is still 100mA. I would probably use a PalmPilot as the computer part with an interface to this. Here in WA there doesnt seem to be any options (we are 3000km from the eastern seaboard). All in all a big project! Richard Laura Halliday wrote in message om... "Richard Hosking" wrote in message .au... No doubt this is an easy question, but is there a way of interfacing to the web via HF SSB/data? I want to be able to do this from a remote location portable/backpack with no mobile phone access and low power. The nearest infrastructure could be several hundred km away I could use amateur bands or possibly a commercial solution if available. What would be the data format and where would I get more info on this? This shoulds like a job for a satellite. If worst comes to worst, plug a modem in to a satellite phone and dial up your ISP... The first UoSATs were for exactly this sort of application: take a briefcase-sized station in to the field and send chitchat back to home base by satellite, completely independent of terrestrial infrastructure, which may not exist anyway. We have satellite Internet here in Canada. It isn't cheap. Laura Halliday VE7LDH "Que les nuages soient notre Grid: CN89mg pied a terre..." ICBM: 49 16.05 N 122 56.92 W - Hospital/Shafte |
#16
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Laura Halliday wrote:
"Richard Hosking" wrote in message .au... No doubt this is an easy question, but is there a way of interfacing to the web via HF SSB/data? I want to be able to do this from a remote location portable/backpack with no mobile phone access and low power. The nearest infrastructure could be several hundred km away I could use amateur bands or possibly a commercial solution if available. What would be the data format and where would I get more info on this? This shoulds like a job for a satellite. If worst comes to worst, plug a modem in to a satellite phone and dial up your ISP... The first UoSATs were for exactly this sort of application: take a briefcase-sized station in to the field and send chitchat back to home base by satellite, completely independent of terrestrial infrastructure, which may not exist anyway. We have satellite Internet here in Canada. It isn't cheap. Laura, We can only get a sat downlink here easily. The uplink is almost always a dialup. Rob |
#17
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Laura Halliday wrote:
"Richard Hosking" wrote in message .au... No doubt this is an easy question, but is there a way of interfacing to the web via HF SSB/data? I want to be able to do this from a remote location portable/backpack with no mobile phone access and low power. The nearest infrastructure could be several hundred km away I could use amateur bands or possibly a commercial solution if available. What would be the data format and where would I get more info on this? This shoulds like a job for a satellite. If worst comes to worst, plug a modem in to a satellite phone and dial up your ISP... The first UoSATs were for exactly this sort of application: take a briefcase-sized station in to the field and send chitchat back to home base by satellite, completely independent of terrestrial infrastructure, which may not exist anyway. We have satellite Internet here in Canada. It isn't cheap. Laura, We can only get a sat downlink here easily. The uplink is almost always a dialup. Rob |
#18
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Richard,
I don't know if you ever got the response you needed on this. In my quick scan of the responses, I did not see any references to the very common use of HF/SSB as a transport for E-Mail in the maritime services. Of course, I'm not sure how picky they are about your station being on a floating platform, so that may be a problem. That said, I believe INMARSAT started out as a tool for the high seas and is now used by everyone and everywhere. If that does not work, check out the available equipment and perhaps seek an experimental license to explore and invent a new service. You might try the following: http://www.marinenet.net/ http://www.cruiseemail.com/locations.html http://www.sailmail.com/ http://www.yachtcom.co.uk/SSB-email/ http://www.shipcom.com/email.htm http://www.hfradio.com/ http://www.rodgersmarine.com/links.htm http://www.globewireless.com/ These are a few URLs that may point you in the right direction. Much of this is aimed at the casual sailor on a small sailboat or yacht with modest power (100-250 Watts) and a vertical whip antenna, so it is pretty basic stuff. 73, Dave Dave Williams - K7HMP = = = = = = = = = = Richard Hosking wrote: No doubt this is an easy question, but is there a way of interfacing to the web via HF SSB/data? I want to be able to do this from a remote location portable/backpack with no mobile phone access and low power. The nearest infrastructure could be several hundred km away I could use amateur bands or possibly a commercial solution if available. What would be the data format and where would I get more info on this? Thanks Richard |
#19
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Richard,
I don't know if you ever got the response you needed on this. In my quick scan of the responses, I did not see any references to the very common use of HF/SSB as a transport for E-Mail in the maritime services. Of course, I'm not sure how picky they are about your station being on a floating platform, so that may be a problem. That said, I believe INMARSAT started out as a tool for the high seas and is now used by everyone and everywhere. If that does not work, check out the available equipment and perhaps seek an experimental license to explore and invent a new service. You might try the following: http://www.marinenet.net/ http://www.cruiseemail.com/locations.html http://www.sailmail.com/ http://www.yachtcom.co.uk/SSB-email/ http://www.shipcom.com/email.htm http://www.hfradio.com/ http://www.rodgersmarine.com/links.htm http://www.globewireless.com/ These are a few URLs that may point you in the right direction. Much of this is aimed at the casual sailor on a small sailboat or yacht with modest power (100-250 Watts) and a vertical whip antenna, so it is pretty basic stuff. 73, Dave Dave Williams - K7HMP = = = = = = = = = = Richard Hosking wrote: No doubt this is an easy question, but is there a way of interfacing to the web via HF SSB/data? I want to be able to do this from a remote location portable/backpack with no mobile phone access and low power. The nearest infrastructure could be several hundred km away I could use amateur bands or possibly a commercial solution if available. What would be the data format and where would I get more info on this? Thanks Richard |