I absolutely adore my cell phone provider. Almost physically. Verizon kicks serious ass in my neighborhood; it was up through Hurricanes Ivan, Dennis, etc etc etc. (include: all storms last year).
I hate to break it to you, but Nextels don't work like real walkie-talkies either. They still have to hit a NEXTEL tower. And, as a friendly note, they can ONLY hit NEXTEL towers, because, as advertised, you -can't roam-. This doesn't mean that NEXTEL eats the usage charges FOR you.
It just means that, unlike every other carrier, if you're out of range of a NEXTEL tower, that's just too bad, no communications for you.
I've never used Sprint's push-to-talk feature, honestly, but Nextel seems to have that market cornered. I used to sell both Sprint and Verizon phones (okay, okay - I didn't TRY to sell Sprint; I was just SUPPOSED to sell Sprint. I sold Verizon whenever I could), and the NEXTELs beat Sprint's handie-talkie feature. Because really - who do you know with Sprint Ready-Link?
Something with 100 Mbps and 6-10 km radius without having LOS would be a dream.
As an Amateur Radio operator, let me be the first to say,
"Yes. Yes it is."
The power restrictions you're facing with consumer electronics are measured in milliwatts. With the current regulations and field of devices, you'll be lucky to get a 300 foot, line-of-sight radius, even with the range-extending antennae for which Linksys/D-Link/Whomever will charge you out the arse.
Mainstream Amateur Radio systems aren't currently anything like a replacement, although you can currently use something like 4-6 of the 2.4GHz wireless networking channels (2390-2450 MHz) for Amateur applications, assuming encryption is not used in any transmission (which pretty much rules out anything that involves a secure login, like checking your e-mail).
On the plus side, you can use 200+ watts PEP for transmission (possibly 1500, I forget which). On the down side, 200 watts at 2.4GHz is not healthy to stand near, much less 1500 watts.
The down side, of course, is that the equipment is expensive, hot, both ends have to be licensed, encryption or obfuscation of any sort is not allowed, so on and so forth.
===
disclaimer: this response pretends to be accurate. it mostly (90%) is, but don't go screaming at the FCC because you read something some random operator said on Slashdot.
Basically, submarines use a few different radio systems, but the one you're talking about is ULF - Ultra Low Frequency. You're talking radio frequencies measured in hertz, not kilohertz (MF), and definitely not megahertz(H/V/UHF, etc). Basically they trail a giant antenna behind them in the water; one of Tom Clancy's favorite tricks is to have the antenna get fouled, but anyways, I digress.
The land-based equivalent is a giant antenna farm that's actually physically coupled into the earth.
this is rough and sketchy, but it's the basic idea.
73
I know, I know. Mod me redundant. This is slashdot. The editors are on crack. Who Rs TFing A?
But really. Not a security flaw? No, Cisco said it wasn't a NEW security flaw, but an extension of older ones. There's kind of a difference between "Not" and "Older-but-born-again".
Mod me into oblivion now.
Any time. If you (or anyone else reading this) need anything or have any questions regarding amateur radio, feel free to shoot questions my way -- ki4iib at g mail. com.
Absolutely not!! There's a bunch of different modes you can use -
- morse code (classic)
- voice (at least four different voice modes: LSB, USB, AM, and FM)
- 10295812059182059 different digital modes
lotsa more stuff
Check out http://www.arrl.org/ for more info =)
Slashdot Mirror
I absolutely adore my cell phone provider. Almost physically. Verizon kicks serious ass in my neighborhood; it was up through Hurricanes Ivan, Dennis, etc etc etc. (include: all storms last year).
'Tis beauty itself.
I hate to break it to you, but Nextels don't work like real walkie-talkies either. They still have to hit a NEXTEL tower. And, as a friendly note, they can ONLY hit NEXTEL towers, because, as advertised, you -can't roam-. This doesn't mean that NEXTEL eats the usage charges FOR you. It just means that, unlike every other carrier, if you're out of range of a NEXTEL tower, that's just too bad, no communications for you. I've never used Sprint's push-to-talk feature, honestly, but Nextel seems to have that market cornered. I used to sell both Sprint and Verizon phones (okay, okay - I didn't TRY to sell Sprint; I was just SUPPOSED to sell Sprint. I sold Verizon whenever I could), and the NEXTELs beat Sprint's handie-talkie feature. Because really - who do you know with Sprint Ready-Link?
No, no. It's an -autonomous-, self-directed car. Yes, it's miniature and motorized. But WTFM.
Something with 100 Mbps and 6-10 km radius without having LOS would be a dream. As an Amateur Radio operator, let me be the first to say, "Yes. Yes it is." The power restrictions you're facing with consumer electronics are measured in milliwatts. With the current regulations and field of devices, you'll be lucky to get a 300 foot, line-of-sight radius, even with the range-extending antennae for which Linksys/D-Link/Whomever will charge you out the arse. Mainstream Amateur Radio systems aren't currently anything like a replacement, although you can currently use something like 4-6 of the 2.4GHz wireless networking channels (2390-2450 MHz) for Amateur applications, assuming encryption is not used in any transmission (which pretty much rules out anything that involves a secure login, like checking your e-mail). On the plus side, you can use 200+ watts PEP for transmission (possibly 1500, I forget which). On the down side, 200 watts at 2.4GHz is not healthy to stand near, much less 1500 watts. The down side, of course, is that the equipment is expensive, hot, both ends have to be licensed, encryption or obfuscation of any sort is not allowed, so on and so forth. === disclaimer: this response pretends to be accurate. it mostly (90%) is, but don't go screaming at the FCC because you read something some random operator said on Slashdot.
1. Don't use bastard children like "childs" =)
Basically, submarines use a few different radio systems, but the one you're talking about is ULF - Ultra Low Frequency. You're talking radio frequencies measured in hertz, not kilohertz (MF), and definitely not megahertz(H/V/UHF, etc). Basically they trail a giant antenna behind them in the water; one of Tom Clancy's favorite tricks is to have the antenna get fouled, but anyways, I digress. The land-based equivalent is a giant antenna farm that's actually physically coupled into the earth. this is rough and sketchy, but it's the basic idea. 73
Wait, wait; you have to pay them AND tip them?!
I know, I know. Mod me redundant. This is slashdot. The editors are on crack. Who Rs TFing A? But really. Not a security flaw? No, Cisco said it wasn't a NEW security flaw, but an extension of older ones. There's kind of a difference between "Not" and "Older-but-born-again". Mod me into oblivion now.
Any time. If you (or anyone else reading this) need anything or have any questions regarding amateur radio, feel free to shoot questions my way -- ki4iib at g mail. com.
In Soviet Russia, Golden Gate Bridges jump off YOU!!!
Absolutely not!! There's a bunch of different modes you can use - - morse code (classic) - voice (at least four different voice modes: LSB, USB, AM, and FM) - 10295812059182059 different digital modes lotsa more stuff Check out http://www.arrl.org/ for more info =)