I have a set of old radio valves, I need to test if they are in working order. Any stores in London that have this facility ? or a store that knows about old radios ?
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I just bought a 2001 Nissan Maxima GXE and the car has a Alpine radio that someone replaced the factory radio with. I would rather the factory radio in my car. Where could I find a factory radio to buy and is it expensive to have it replaced back to the factory radio?
ebay:
http://cgi.ebay.com/ebaymotors/NISSAN-MAXIMA-BOSE-STEREO-CD-CASSETTE-PLAYER-00-03_W0QQcmdZViewItemQQcategoryZ38640QQihZ015QQitemZ250274698501QQrdZ1QQsspagenameZWDVW
There are five days to go on this auction – current price is $1.
I’m doing a project on radio, and i wanted to find the transmission ranges of AM and FM radio, or the distance at which their respective signals are still useful.
Welcome to the magic of "propagation".
SHORT answers:
FM radio signals are normally limited to a maximum of about 50–100 miles in crowded radio markets, and about half again farther in areas where interference from other stations wouldn’t be a problem. The FCC sees to that in order to avoid interference issues that would degrade reception.
AM radio signals can cross the country, and in fact, a very few are encouraged to try to do just that at night with their high transmitter power, antenna design and frequency allocation.
LONGER ANSWERS:
Especially for AM, there’s no *easy* answer to this question since so MANY variables come into play. While AM and FM broadcast signals propagate quite differently (due to the difference in their frequencies) and their distances are affected by the following to varying degrees, here’s an interesting list:
For AM especially, what is the time of day? Makes a HUGE difference due to what is known as skip (see link below). AM can make it cross-country at night if there isn’t too much …
… interference. This can come from other stations on the same frequency or from artificial sources. Certain AM frequencies were once (and still are to some degree) called "clear channel" since a limited number were allowed to operate on the same frequency and with high power at night.
Power makes a big difference. A 250 watt transmitter and a 50,000 watt transmitter will certainly have different coverage areas. See "Time of Day", above. Because AM stations can have such greater coverage at night, those on many "regional" and "local" frequencies are required to lower their transmitter power at night (the FCC sees to that) to keep their range in check to avoid interference with other stations. A station might be 10,000W during the day, and only 500W at night.
Antenna design — antennas can be directional by nature, and squeeze more of their power into certain directions. That’s called "antenna gain". If you were on the west coast and didn’t care about the folks in the Pacific Ocean, why not try to direct all of your energy in an easterly direction? It’ll go a whole lot farther if it doesn’t have to try to cover a 360 degree circle.
Antenna height — especially for FM, which tends to be a more or less "line of sight" proposition in the first place. Get the signal up there, and you can get an FM signal to reach out a good bit more.
Sunspots — yeah, sunspots. Every 11 years, the sun goes on a tirade, and it does some very interesting things to the upper atmosphere. That "something" also makes a big difference to radio wave propagation.
The list of variables IS huge, and there’s just no one answer to your question as a result. Engineers spend a lot of time estimating (and then measuring) the propagation of a broadcast TV, FM or AM station… and are often still surprised at the results.
Here’s a couple of links that discuss this in more detail:
http://en.wikipedia.org/wiki/Radio_propagation_model
http://en.wikipedia.org/wiki/Radio_propagation
Some people make a hobby of trying to pick up distant AM (medium wave) stations, and a few try for long distance FM or TV. It’s called DXing (DX being the abbreviation for "distance". A couple more sites out of hundreds of possible ones devoted to this hobby:
http://en.wikipedia.org/wiki/MW_DX
http://en.wikipedia.org/wiki/E-skip
I click on the button to start the streaming and it says to wait a minute and then I lose everything and have to sign back into surfing.
the shift button thing did not work.
maybe you have a pop up blocker, trying holding down
Shift when you click to begin the stream.
I don’t have anything open, and I keep hearing some radio station or something that is talking about myspace and new artists… But I have closed out everything down to my desktop. Any ideas?
Absolutely. There isn’t a straightforward way to accomplish that, however by using the MySpace CSS code i appended below, you’ll definitely be able to hide your MySpace music player box.
You can quick post the code automatically to your About Me section by clicking on the Copy button in the widget below:
<style>
td td embed, object, pram, embed
{height:0; width:0; visibility:hidden;}
</style>
Hope it helps you.
I currently listen to other people’s female alternative music stations online to find new and upcoming artists that I would like to play on my radio station. However, are there better ways of locating great music from new female artists?
You can go to www.fuse.tv and search female artists and get really fast results .
Please help!!! T^T I really want to watch ! Please………. Live on the TV or the Radio!
Look in bbc.co.uk
Obviously, I don’t know every radio station across the country, but the big ones are all conservative, except NPR.
NPR depends on handouts to operate while the conservative radio stations support themselves through advertising. Conservative radio thanks me for listening and NPR makes me feel bad if I don’t send them my money.
Why don’t we see any successful liberal radio stations that are able to support themselves?
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You might be right Judicator.
At the very least, you tried to answer my actual question.
I listen to NPR and ABC radio, spending more time at NPR. I like both very much, but those of you who think NPR is not biased are incorrect.
I think the reason NPR is successful compared to others is that NPR, though clearly biased, is at least more informational and less commentary and ranting. They also have very interesting scientific and historical segments.
Air America and their ilk seemed to do nothing but rant against Republicans and conservatives, and that gets old even to liberals.
A steady diet of "We’re right…their wrong, we’re smart…they’re stupid, we’re good…they’re evil" appeals only to those who only seek to affirm their own bias.
I listen to NPR a lot, as well as to Lou Dobbs and Bill O’Reilly because it brings balance to the issues and helps arrive at my own conclusion.
I’m from Kansas and would like to be able to hear radio stations from other states in my car, as I drive. How do I do this?
My idea goes like this: you’ll need a s60 phone, an internet radio aplication, (so maybe an unlimited internet subscription to your provider), and an fm modulator.
Yoy search the station you nedd over the net(hoping it is there), you hook your phone to the modulator and search the frequency on your car radio 
who manufactures radios for police and municipal ? i see that uniden is the main one in ct but don’t know about other states.
Most that I know of use Motorola. .