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I reset my search to PSBs: personal Survival Beacons.
I think this is the style of device that you are using. These are more reasonable. $300-$400 - but the ones with GPS built in seem to run $600. They seem to come in two flavors: those with built in GPS, and those with an interface to an external GPS source which are cheaper. Some beacons feature 121.5 AND 406.1xxx because a coordinate transmission gets rescue in the near ball park but (for aircraft at least) a 121.5 transmission can be homed right to the (hidden by trees?)site. However, the climber/backpacker version PSB/EPIRB is probably not approved for aircraft use - it's duration is certainly more limited. The revised regs DID say a survival 406 ELT may be used for light aircraft though. Brian W MikeW wrote: Hi Brian, I've just bought a new 406MHz EPIRB for the boat, cost me AUD400, so about $350 of your variety I think. The "real" problem is that the COSPAS/SARSAT constellation of satellites had the 121.5/243MHz capability turned off at the beginning of this year, which suggests that the 20 inch whip is basically useless unless there's an aircraft monitoring 121.5 within line of sight. We've all had to re-equip during this year to cope (I've managed to leave it until the beginning of our summer, when new stocks became available). Incidentally, just measured the antenna: 175 mm from the top of the case so rough approximation not too bad in this case. Cheers ... MikeW |
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Yes Brian, pretty much true. My device is guaranteed for 48 hours
transmission after activation as it's intended for off-shore use, but no GPS interface. But it doesn't need it - the satellite(s) works that out to within 6km radius within an hour or so and then the inbuilt 121.5 MHz secondary homes the aircraft in on the signal. That's how most of the deep-water sailors (think British Ocean Challenge, Whitbread Round the World, etc) get home when things go pear shaped. We've got some very good maritime search aircraft that can damn near reach Antarctica if they've got an EPIRB report. As indeed do your people. So why re-invent the wheel each time when there's a perfectly good spare in the shop next door? Unfortunately it's been a long time since I had the prop in front of me, but I've kept an interest. Cheers ... MikeW "brian whatcott" wrote in message ... I reset my search to PSBs: personal Survival Beacons. I think this is the style of device that you are using. These are more reasonable. $300-$400 - but the ones with GPS built in seem to run $600. They seem to come in two flavors: those with built in GPS, and those with an interface to an external GPS source which are cheaper. Some beacons feature 121.5 AND 406.1xxx because a coordinate transmission gets rescue in the near ball park but (for aircraft at least) a 121.5 transmission can be homed right to the (hidden by trees?)site. However, the climber/backpacker version PSB/EPIRB is probably not approved for aircraft use - it's duration is certainly more limited. The revised regs DID say a survival 406 ELT may be used for light aircraft though. Brian W MikeW wrote: Hi Brian, I've just bought a new 406MHz EPIRB for the boat, cost me AUD400, so about $350 of your variety I think. The "real" problem is that the COSPAS/SARSAT constellation of satellites had the 121.5/243MHz capability turned off at the beginning of this year, which suggests that the 20 inch whip is basically useless unless there's an aircraft monitoring 121.5 within line of sight. We've all had to re-equip during this year to cope (I've managed to leave it until the beginning of our summer, when new stocks became available). Incidentally, just measured the antenna: 175 mm from the top of the case so rough approximation not too bad in this case. Cheers ... MikeW |
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