PS I speak from years of experience as a telegraphist in the military (a long time ago).
Were you doing 5 character code groups, rather than words? I beleive that someone sending/receiving regular words will start to hear the word in it's entirety rather than as individual characters. A military telegraphist who's dealing with encrypted characters won't get that benefit.
their server is as badass as the machine - except its a bit faster. -- only in japan can some random guy host a 5 meg movie and be slashdotted without the server crashing and burning
He's in Japan - it's probably hosted on his cellphone!
Check out the ARRL home page, they have a link to some BPL info and some video from around various cities with BPL. It can get *really* bad, bad enough to block out the WWV time signal, which is a 10kW signal. Ham power limits are set at 1.5kW, but most hams transmit 5-100W signals.
Some of the prepaids are now reasonable as a payphone replacement. Since the customer pays for the phone, they keep cheap models avaialble--I've seen Virgin Mobile phones for $40 with no fine print. My wife got a bundle that was $160 for a small, simple flip-phone and $120 airtime, enough for the first year at the rate she uses it. Plus if one of these phones breaks, you can replace it with another $40 phone instead of paying an artificial "full price".
The Virgin mobile prepaid plan in the UK looks quite good, the US one (I'm using) isn't as good, since the pre-paid minutes expire after 3 months (unless you buy more, in which case they roll-over). Problem I've seen with most other US-based pre-paid plans is that the minutes expire, sometimes after 1 month - what's the use of a pre-paid plan with 1 month expiration of minutes?!??
Clearly, whatever BT that we're talking about here happens to be a plural entity, whereas British Telecom is a single company (and should use the sinuglar "is" rather than "are").
But it's British Telecom, so 'are' is correct. Use of 'is' is an American thing.
It's called carrier current broadcasting. It's legal under Part 15 (the section of the FCC rules that covers things that don't need licensing), but I think there are certain issues involved.
The issues being that it isn't permitted to interfere with licensed services, which is exactly the problem that BPL has.
However, there is a small chance this figure could be revised, he said, since the star appears to be too faint for this distance. Either it is actually further away, he said, or it has unusual properties that make it shine less brightly than other red dwarfs.
Anyone have the numbers on how dim a dyson sphere around a Sol-like star would be?
Mclaren Formula 1 team in one race a couple of years ago had a problem with their engines. The engine had a manufacturing flaw (ie. it was not made accurately). During the middle of the next race, both cars had identical engine failures on the same lap, within a couple of corners of each other - that's precise - both engines were made very precisely to the wrong specification.
Actually, Dish isn't the only DVB broadcaster in the states. There are a lot of single channel broadcasters on Telstar 5 Ku-band. Look at lyngsat for info. Most of these are non-US stations transmitting TV for expats.
Re:Already discussed stupid hd buses w/ ATA133 sto
on
Firewire and Linux?
·
· Score: 1
My biggest problem with using firewire for storage is that doing so consumes most/all the bandwidth that might be better used for digital video
This is not a problem with firewire. 400 Mbps is 50MB/s, and DV only takes 3.6MB/s. With firewire, you even have the advantage of guaranteed bandwidth, so you DV camera can get guaranteed 3.6MB/s, and your hardrive can get it's required bandwidth simultaneously without problem.
I agree with you about the USB though. You really only want to use it for low bandwidth stuff.
Generally, HF (3-30 MHz) skip (off the F-region of the ionosphere) is a function of solar activity, with the MUF occaisionally rising into the VHF region as ebh above states.
For VHF (50-300 MHz), skip of the E-region (Sporadic-E) is the most common skip. This is not a function of solar activity, and occurs randomly for (usually) short periods. Most long distance VHF communication is due to tropospheric conditions.
50-54 MHz is known as the 'magic band' because it happens to support a range of different propogation phenomena, F-skip like lower frequencies, sporadic-E, tropospheric propagation, meteor bounce, aurora bounce, moonbounce (really difficult at 50MHz, easier as you get higher), and some *really* funky others (transequatorial-F, field-aligned-irregularities) that you will have to look up elsewhere. The ARRL handbooks are *really* good sources of info.
As TV channel 2 is only just above 54 MHz, then the time to look for long distance TV reception is when conditions are good for the 6m (50-54 MHz) HAM band.
AM radio is at a very low frequency, and so it's behaviour will be similar to that of the 160m (1.8-2.0 MHz) ham band. F-skip of AM radio will be best at night.
This link has monthly charts of expected f-skip propagation showing what time of day is the best to listen for various frequencies. For AM radio, you are interested in the Lowest Usable Frequency getting as low as possible, whilst F-skip on TV channels 2-4 is only possible during the day when the solar flux is *very* high, so as now, hopefully. E-skip on VHF TV channels, and FM radio is possible pretty much any time during daylight though.
If anyone sees any mistakes I've made, please feel free to correct them,
Slashdot Mirror
You mean like Occam?
Check out the Miranda language. There is at least one place (University of Durham, www.durham.ac.uk) that is working on a Miranda to C converter.
I beleive that someone sending/receiving regular words will start to hear the word in it's entirety rather than as individual characters. A military telegraphist who's dealing with encrypted characters won't get that benefit.
He's in Japan - it's probably hosted on his cellphone!
oops, forgot the link:
ARRL link
Check out the ARRL home page, they have a link to some BPL info and some video from around various cities with BPL.
It can get *really* bad, bad enough to block out the WWV time signal, which is a 10kW signal. Ham power limits are set at 1.5kW, but most hams transmit 5-100W signals.
The Virgin mobile prepaid plan in the UK looks quite good, the US one (I'm using) isn't as good, since the pre-paid minutes expire after 3 months (unless you buy more, in which case they roll-over).
Problem I've seen with most other US-based pre-paid plans is that the minutes expire, sometimes after 1 month - what's the use of a pre-paid plan with 1 month expiration of minutes?!??
But it's British Telecom, so 'are' is correct. Use of 'is' is an American thing.
This do?
General Products Hull's here we come!
So get a procrastinator then
The issues being that it isn't permitted to interfere with licensed services, which is exactly the problem that BPL has.
No, he/she had it right. It's the US where TV channels have you :-)
ahem
ABC
CBS
NBC
FOX
UPN
WB
PBS
KONG
are all transmitting a digital signal in Seattle area. ABC, CBS, NBX and PBS are even transmitting some HD stuff.
Here's an example of the difference:
Mclaren Formula 1 team in one race a couple of years ago had a problem with their engines. The engine had a manufacturing flaw (ie. it was not made accurately). During the middle of the next race, both cars had identical engine failures on the same lap, within a couple of corners of each other - that's precise - both engines were made very precisely to the wrong specification.
http://www.arrl.org/arrlletter/audio/
http://www.tapr.org/newsline/
The Hilton Garden Inn chain claim to have free high-speed access in each room. I haven't tried it, but the rooms definitely contain ethernet sockets.
Actually, Dish isn't the only DVB broadcaster in the states. There are a lot of single channel broadcasters on Telstar 5 Ku-band. Look at lyngsat for info. Most of these are non-US stations transmitting TV for expats.
This is not a problem with firewire. 400 Mbps is 50MB/s, and DV only takes 3.6MB/s. With firewire, you even have the advantage of guaranteed bandwidth, so you DV camera can get guaranteed 3.6MB/s, and your hardrive can get it's required bandwidth simultaneously without problem.
I agree with you about the USB though. You really only want to use it for low bandwidth stuff.
http://www.arrl.org/tis/info/propagation.html has a whole host of links to articles about propagation modes, including this, and this article from QST.
Generally, HF (3-30 MHz) skip (off the F-region of the ionosphere) is a function of solar activity, with the MUF occaisionally rising into the VHF region as ebh above states.
For VHF (50-300 MHz), skip of the E-region (Sporadic-E) is the most common skip. This is not a function of solar activity, and occurs randomly for (usually) short periods. Most long distance VHF communication is due to tropospheric conditions.
50-54 MHz is known as the 'magic band' because it happens to support a range of different propogation phenomena, F-skip like lower frequencies, sporadic-E, tropospheric propagation, meteor bounce, aurora bounce, moonbounce (really difficult at 50MHz, easier as you get higher), and some *really* funky others (transequatorial-F, field-aligned-irregularities) that you will have to look up elsewhere. The ARRL handbooks are *really* good sources of info.
As TV channel 2 is only just above 54 MHz, then the time to look for long distance TV reception is when conditions are good for the 6m (50-54 MHz) HAM band.
AM radio is at a very low frequency, and so it's behaviour will be similar to that of the 160m (1.8-2.0 MHz) ham band. F-skip of AM radio will be best at night.
This link has monthly charts of expected f-skip propagation showing what time of day is the best to listen for various frequencies. For AM radio, you are interested in the Lowest Usable Frequency getting as low as possible, whilst F-skip on TV channels 2-4 is only possible during the day when the solar flux is *very* high, so as now, hopefully. E-skip on VHF TV channels, and FM radio is possible pretty much any time during daylight though.
If anyone sees any mistakes I've made, please feel free to correct them,
Alan
http://www.warships1.com/Weapons/WMBR_Sea_Dart.htm