http://www.stormcam.org/mhz-ham/
I am a HAM operator, but this is new to me. I am able to get Sri Lankan FM here in Chennai how?
Today when I was tuning my Pocket FM Radio, I was able to get many Sri Lankan FM channels here in Chennai load and clear. Some channels like Sooriyan FM 103.2 MHz Colombo, Vasantham 97.6 MHz (Colombo) and many Singhalese, a Hindi, a English and a Urdu Channels were able to be listened. As a HAM Radio Operator, I know ionospheric conditions will help SW to reach a greater distance and some times MW too will be distracted by ionosphere. But FM being a line of sight transmission, how it able to reach Chennai which more than 1000 Kms away from Colombo. And I was able to get a maximum of 2 spikes(Signal strength) in the digital dial. Can anyone thorough some light. Also, I am able to get Karaikal, Kodaikanal AIR FM, Bangalore Radio City and Mumbai FM here. As this is new esp in FM range even though Tx Power can be taken high, but this far, it is wondering. Kindly show some light.
It is called tropospheric ducting, where weather conditions basically make a “duct” which VHF signals can travel farther than they normally can.
You can take advantage of this phenomenon as a ham radio operator with a 2M transceiver set.
N3LEE 12W “Portable” 900 mhz HAM RADIO