shantam2005
IrRegulars
Hey using this method can I recieve stations from 170-270km away?
A guide to receive far away FM stations
- Thread starter mundle2002
- Start date
- Replies 53
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hi, it is always possible to get fm stations from 100-200 km distance. how good the reception will depend on the altitude of your location and weather : if u r living in a plain area with no hilly areas coming in near sight, it is good.If you are in a hilly area sorrounded by still higher mountains then u may not receive the signal at all ,if in a city and living at 15 th floor apartment then reception of the distant stations will be very good ,if your location exceptionally high altitude > 1000 meters from sea level with good horizon view all around then stereo reception will be possible for even very distant stations (450 km or more away) with inexpensive radio sets. Obviosly a good antenae ,amplifier will enhance the reception.
i have noticed that FM quality gets worse after moving 100 KM from delhi. till that area it's pretty good.the problem areas are where you are somewhere in the middle of two major cities. the radio tries to catch stations from both the cities and u end up with a mess. i have noticed the problems while driving to agra. for a distance of around 10 KM, the radio is simply useless as the stations are noisy and u end up hearing two songs interfering with each other.
Hi everybody,
After reading the previous posts, i thought to share something which might be unknown to some people. Receiving far away FM stations is called FM Dxing. I am from Ranchi(Jharkhand) and unfortunately here we dont have private FM stations except Vivid Bharti:wall: . But i do listen to FM stations of Kolkata(Calcutta).
I want to make it clear to everybody that high frequency signals travel in the line of sight and these high frequency signals can either be FM or AM.
So, saying that FM signals travel in the line of sight is partially correct.
Low frequency signals like MW and SW also travel in the line of sight but they also get reflected by the one of the layers of atmosphere. So we can listen to faraway stations in these bands.
High frequency signals do not get reflected rather they pierce the layers of atmosphere and are lost in space leaving only one option: line of sight transmission.
But there is a special layer in the atmosphere called ionosphere which helps in reflecting the high frequency signals. Although not always present, this layer is responsible for FM Dxing.
To receive distant signals you need:
1) A good FM receiver. (I have got my Sony home theatre which works very well)
2) An FM Booster(Not those TV boosters)
3) A home made antenna.
You can get a plenty of circuits diagrams in the internet for FM booster.
Print out the diagram and either make it yourself or give it to the technicians who repair TV and radio.
The antenna can be a simple one like a whip antenna if you want to listen to nearer stations or it can be a complicated one like Yagi antenna. I made a quadrangular antenna.
With the help of above things, i receive FM stations of Calcutta. In a straight line it is more than 350 Kms from Ranchi. The signals become clearer in the night and they become stereo from mono.
Thus my setup receives whatever signals it gets from line of sight and from ionosphere reflections.
Some other facts:-
Aircraft communications also use high frequencies (118-136Mhz) and they talk in line of sight BUT THEY ARE NOT FM, they are AM (amplitude modulated) signals like those of Medium wave and Short wave.
One interesting thing:- One day when i switched on my system i wasnt able to receive Kolkata FM stations rather i was receiving radio stations of Burma(Myanmar) . I took out the map and measured the distance of Burma. It was more than 1500 Kms. Isnt that interesting:yahoo:May be due to changes in the ionosphere i was able to receive them.
It might seem surprising to you that i am a Doctor but electronics and communication is my hobby. I hope you enjoyed reading my little article. Need any help?
hello everyone
i am from cochin
a student interested in receiving far off FM stations
though i have many nearby stations , out of hobby and curiosity i would like to listen to far off stations
someone pls help me to do the necessary
should i buy the FM booster kit or the mosfet based preamplifier available in electronisforu.com ???
also about the type of antenna that i wud need ( i live in a city with lot of buildings near my house )
any help wud be appreciated
After reading the previous posts, i thought to share something which might be unknown to some people. Receiving far away FM stations is called FM Dxing. I am from Ranchi(Jharkhand) and unfortunately here we dont have private FM stations except Vivid Bharti:wall: . But i do listen to FM stations of Kolkata(Calcutta).
I want to make it clear to everybody that high frequency signals travel in the line of sight and these high frequency signals can either be FM or AM.
So, saying that FM signals travel in the line of sight is partially correct.
Low frequency signals like MW and SW also travel in the line of sight but they also get reflected by the one of the layers of atmosphere. So we can listen to faraway stations in these bands.
High frequency signals do not get reflected rather they pierce the layers of atmosphere and are lost in space leaving only one option: line of sight transmission.
But there is a special layer in the atmosphere called ionosphere which helps in reflecting the high frequency signals. Although not always present, this layer is responsible for FM Dxing.
To receive distant signals you need:
1) A good FM receiver. (I have got my Sony home theatre which works very well)
2) An FM Booster(Not those TV boosters)
3) A home made antenna.
You can get a plenty of circuits diagrams in the internet for FM booster.
Print out the diagram and either make it yourself or give it to the technicians who repair TV and radio.
The antenna can be a simple one like a whip antenna if you want to listen to nearer stations or it can be a complicated one like Yagi antenna. I made a quadrangular antenna.
With the help of above things, i receive FM stations of Calcutta. In a straight line it is more than 350 Kms from Ranchi. The signals become clearer in the night and they become stereo from mono.
Thus my setup receives whatever signals it gets from line of sight and from ionosphere reflections.
Some other facts:-
Aircraft communications also use high frequencies (118-136Mhz) and they talk in line of sight BUT THEY ARE NOT FM, they are AM (amplitude modulated) signals like those of Medium wave and Short wave.
One interesting thing:- One day when i switched on my system i wasnt able to receive Kolkata FM stations rather i was receiving radio stations of Burma(Myanmar) . I took out the map and measured the distance of Burma. It was more than 1500 Kms. Isnt that interesting:yahoo:May be due to changes in the ionosphere i was able to receive them.
It might seem surprising to you that i am a Doctor but electronics and communication is my hobby. I hope you enjoyed reading my little article. Need any help?
hello everyone
i am from cochin
a student interested in receiving far off FM stations
though i have many nearby stations , out of hobby and curiosity i would like to listen to far off stations
someone pls help me to do the necessary
should i buy the FM booster kit or the mosfet based preamplifier available in electronisforu.com ???
also about the type of antenna that i wud need ( i live in a city with lot of buildings near my house )
any help wud be appreciated