What is going on with satellite/wave communications?
817834
Seen any aurora. Sounds like what is called a magnetic storm.\nIonization of the atmosphere.
101135
Single sideband transmission can afford, "efficient spectrum use, bettter signal-to-noise ratios at low signal levels and better transmitter efficiency" per "Conclusion" on P. 7 of link.  Good luck.
1109557
1) You must first of all be aware that radio waves, light, infrared, x-rays, all these are electromagnetic radiation, only with different frequencies; they are pure energy, without mass, transmitted through space by photons at the speed of light. That is the fastest way of communication there can be in the universe, assuming that nothing travels faster than the speed of light.\n\n\n2) Radio waves were chosen from the electromagnetic spectrum because they include the Water Hole, which is the band of electromagnetic frequencies between 1420 MHz and 1640 MHz. This is the band between the hydrogen line and the strongest hydroxyl spectral line, and is notable because it is a quiet region between two notable frequencies; The combination of hydrogen and hydroxyl yields water (the "water" part of the name); the "hole" part refers to the sudden drop in radio noise (the universe background radiation) within this band. Several SETI programs, including SETI@home search in the Water Hole.\n\n\n3) It has been proposed that higher frequency signals, such as lasers operating at visible light frequencies, may prove to be a fruitful method of interstellar communication; at a given frequency it takes surprisingly small energy output for a laser emitter to outshine its local star from the perspective of its target.\n\nOther more exotic methods of communication have been proposed, such as modulated neutrino or gravitational wave emissions. These would have the advantage of being essentially immune to interference by intervening matter, but are very difficult to generate or detect with current technology.\n\nSending physical mail packets between stars may prove to be optimal for many applications. While mail packets would likely be limited to speeds far below that of electromagnetic or other light-speed signals (resulting in very high latency), the amount of information that could be encoded in only a few tons of physical matter could more than make up for it in terms of average bandwidth.Starting in 1979, Robert Freitas advanced arguments for the proposition that physical space-probes provide a superior mode of interstellar communication to radio signals, then undertook telescopic searches for such probes in 1979 and 1982.
1161131
sirius is a satellite player get it???
302813
SDSL often goes farther than ADSL but is more expensive. If that doesn't reach either, you should check cable or satellite.
542852
It is on certain cable packages and satellite packages.
1060195
You seem to looking for very precice and specific information where the slightest misunderstanding in communication could be an expensive and time consuming mistake. As this is your first antenna built, much of the experience has been played by ear i'm sure, asking advice in places like this.\n\nAbout an hour ago, my sister asked what I'm doing and I said I'm answering questions. As a scientist, she caught on to the fact that anyone could say anything, regardless of the accuracy of the advice, and be trusted. \n\nGiven that your after accurate specifics, I'd suggest you contact a group or discussion panel that specialises in antennas for radio astronomy, and ask the people that acutally know what they are talking about.
273546
It depends on the type of system.  You have point to point, which is direct communications betweent two radio stations.  You have repeater operation, which allows two or more radio stations to communicate with each other through a third system, which relays transmissions over a single frequency pair.\n\nYou have conventional repeaters, or trunked repeaters.  Conventional systems work as mentioned above.  Trunked systems utilize several frequencies, controlled by computer.  Frequency pairs are assigned on a first come basis, and are rotated among all the radios on a system.\n\nRadio is not transmitted through a satellite, unless it *is* satellite radio.  Radio systems operate via a ground antenna system.
682558
It is impossible to give the simple answer for which you seem to be searching.\n\nThere are many frequencies which could be used to cover that distance.\n\nI recommend you read about radio communication in general and about h.f., v.h.f. and u.h.f. communications in particular.
587181
I'm on Starband with the 360 modem and I tried VOIP and it was not satisfactory, barely even worked.  Maybe if you go with the highest package which gives you better uploads it may work but I doubt it even then it would have a big delay. Try calling satellite providers and ask them if they would support it.
936965
Analog and Digital systems just imply the type of modulation.\n\nFundamentally it doesn't matter what the carrier frequency is, so sharing bandwidth is okay .... the FCC may disagreed though.
532193
it could be possible to use an satellite internet service provider from anywhere on the globe without filtering.  though you would have to have a satellite dish installed to recieve the signals.\n\nthe filtering occurs at the ISP level so if you cant get to a different provider, you have little chance of defeating the filtering without HEAVY coding/hacking.
53635
There is a lag due to the delay in transmitting from the earth to the satellite and then from the satellite back to the earth.  You notice this on web pages.  There is a lag in getting the download started, but once it is past that initial lag, it is very fast.
78745
Nearby geographical (or other) blockage may be obstructing the radio signal. Things that could block signal are (but not limited to): mountains, hills, trees, houses, walls, etc. Hope this helps. (If it's just one station it may just be distance from the broadcast location.)\n-www.memeluke.tk
715101
The station generates the signal.  The carrier wave has to be at the specific frequency for which they are licensed, and can not deviate from that any more than standard modulation is allowed.  They are also licensed for how much broadcast power they use.
775512
If you mean communication by morse code, the answer is no. While radio-telex is also communication by radiotelegraphy, I suspect that this is not what you mean. Morse code has been dying for some time, with its steepest decline coming after the IMO discontinued the need for Radio Officers on Merchant Ships provided they were equipped with INMARSAT equipment and sufficient redundant (ie spare) radio equipment to make the need for a dedicated engineer to maintain them superfluous to requirements. I recall the decision well (it was in 1989) as I had only 2 months previously qualified as a Radio Officer. British Telecom (the main provider of coastal radio stations in the UK) closed down its 500KHz (MF R/T emergency frequency) listening on 1st January 1998, providing instead a constant listening watch on HF and VHF (2182KHz and Ch16 emergency frequencies respectively). It closed its commercial coastal radio stations in a phased operation beginning in June 1999.
425519
there are basically 2 parallel mediums of propagation. air and the outer liquid hemisphere. i expect to see interference also as there will be addition of waveforms.