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Mumbai FM channels in Pune
- Thread starter SVK
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Now by govt rule any FM channel will have same freq throughout country like BIG FM transmitted on 92.7 throught nation, but I actually receive the Mumbai channels in Pune, as all city events, traffic updates belog to Mumbai. Only official pvt FM channel in Pune is 98.3 radio mirchi having contents Pune based
bullonwheels
Newbie
but i can recieve only red fm(93.5) in pune n that to only in specific areas of my house...
Signals of RED FM (93.5) are strong and so this FM can be available in Pune (I guess), but still the signal inside house is not that strong to be received anywhere like local FM channelsNote: I live on 3rd floor, so I think I can receive all FM channel from Mumbai
Signal of Mumbai "FM" stations being available in Pune ???Thats "impossible" unless these stations have transmittion towers in Hills that are between these cities.Reason is, FM signal are available only on "Line of Sight" (Unlike < 1MHz AM that can travel pretty much around the world).Distance between Mumbai and Pune is 125 KM (Lign of Sight, not road), and you can not catch a FM signal from more then 70 KM even if your building is 100 meter high (~20 floors).
I Agree on the technical info u have given, becoz I am also a telecom engg. but the fact is that I can receive above mentioned channel with 2-3 even in stereo mode on my Sony music system and also on my Mobile. May be the transmitters are on hill between 2 cities (& antenna of our music system is strong 🙂)
Where are you located in Pune? Can you give up Approx Lat/Long (Google Earth/Maps helps here 😉 ). I remember that most of FM channels work on Mumbai-Pune Expressway as well, mybe FM comapnies have created towers to cater to Expressway since FM in cars is one of the large market segments for FM companies.
FM stations being received 100-200 KMs away from the originating city is no miracle, just pure electronics. How far the signal will be received depends on:
(1) The power of the transmitter - An FM transmitter is just an electronic device that broadcasts electronic energy. Don't faint, but what it broadcasts is actually electric current. Why we don't get a shock by it as we do with normal electric current in our household, is because the power transmitted by FM stations is so less in comparison. An FM transmitter that broadcasts 10 Watts of current (in form of modulated wave energy), can be heard 100 miles away (aerial distance) or even more. See this: All about FM and AM radio broadcasting: PCS Electronics specially the picture at http://www.pcs-electronics.com/schematics/max1rack2.jpg
(2) Availability of LoS (Line of Sight) - FM Signals travel in straight lines. For best possible reception an LoS is required. A person nearer to the transmitting station may not get as good a reception as person much farther but having a better LoS.
(3) Capability of the receiver - The reception also depends on the capability of the receiver. A good receiver can catch and demodulate signals that an ordinary receiver will simply ignore or won't be able to process.
(4) Electric interference - We don't realize it, but there is so much of electrical interference present in our environment. FM reception, like any other device working on RF waves, is subject to electrical interferences. Take a mobile phone with FM near to a computer's CPU when you are listening to FM, the sound quality will drop considerably, take it away, the signal improves.
In brief, it is absolutely no miracle that Mumbai FM stations can be heard in Pune. I'd say, if you use a good external antenna, you can hear Mumbai FM stations in interiors of Maharashtra.
~ Ranjeet Rain
(1) The power of the transmitter - An FM transmitter is just an electronic device that broadcasts electronic energy. Don't faint, but what it broadcasts is actually electric current. Why we don't get a shock by it as we do with normal electric current in our household, is because the power transmitted by FM stations is so less in comparison. An FM transmitter that broadcasts 10 Watts of current (in form of modulated wave energy), can be heard 100 miles away (aerial distance) or even more. See this: All about FM and AM radio broadcasting: PCS Electronics specially the picture at http://www.pcs-electronics.com/schematics/max1rack2.jpg
(2) Availability of LoS (Line of Sight) - FM Signals travel in straight lines. For best possible reception an LoS is required. A person nearer to the transmitting station may not get as good a reception as person much farther but having a better LoS.
(3) Capability of the receiver - The reception also depends on the capability of the receiver. A good receiver can catch and demodulate signals that an ordinary receiver will simply ignore or won't be able to process.
(4) Electric interference - We don't realize it, but there is so much of electrical interference present in our environment. FM reception, like any other device working on RF waves, is subject to electrical interferences. Take a mobile phone with FM near to a computer's CPU when you are listening to FM, the sound quality will drop considerably, take it away, the signal improves.
In brief, it is absolutely no miracle that Mumbai FM stations can be heard in Pune. I'd say, if you use a good external antenna, you can hear Mumbai FM stations in interiors of Maharashtra.
~ Ranjeet Rain
