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FCC Proposal Intrudes on Unlicensed Spectrum

Mobile-satellite tower operations would share part of the same band used for Bluetooth, Wi-Fi, and many more unlicensed devices. My colleague Don Evans ably posted an earlier report on the FCC’s proposal to allow Mobile-Satellite Service (MSS) tower-based operations to move into the adjacent

Posted on:03-13 View:507
Antenna directivity and gain

A n overview, summary, tutorial about the basics of RF antenna directivity (aerial directivity) and gain including isotropic radiators, polar diagrams and antenna dBi figures and antenna dBd figures. RF antennas or aerials do not radiate equally in all directions. It i

Posted on:03-12 View:2729
RF Coax Cable Connectors

- an overview of the different types of RF connectors that can be used with coax cable or feeder including the UHF (SO239 / PL259), BNC, TNC, N-type, SMA, SMB, SMC, MCX, etc.. Coax cable connectors, often called RF connectors are in widespread use. Wherever radio frequency or RF connections n

Posted on:03-11 View:11030
How Amplifiers Work

The purpose of an amplifier is to receive a small electrical signal and enlarge or amplify it. In the case of a pre-amplifier the signal must be amplified enough to be accepted by a power amplifier. In the case of a power amplifier, the signal must be enlarged much more, enough to power a loudspeak

Posted on:03-11 View:1412
What is "RDS" and how can it increase my enjoyment of FM rad...

"RDS" stands for "Radio Data System" and it allows FM broadcasters to send far more than just an analog audio signal out over the air waves. Using a 57 kHz "subcarrier," stations can transmit digital RDS data for reception by RDS-equipped FM tuners. This technology ope

Posted on:03-11 View:22899
Versatile FM Transmitter

Description: Here is the circuit diagram of a versatile FM transmitter that doesn’t have a coil. The circuit is simple and easy to assemble. The gate N1 acts as a buffer for strengthening the signals from the condenser microphone. The inverter N2 with its associated components forms a

Posted on:03-11 View:2492
How to Build an Antenna

An antenna at the most basic level is a device that collects or emits radio waves. It is made of electricity-conducting material that is tuned to the frequency of a radio wave so it resonates with a radio signal of the same frequency. In its receiving mode the antenna will collect this signal and p

Posted on:03-08 View:318
How to Make a Free Radio Station

If you have a lot to say on a lot of different subjects or are expert in a field and would love to share your knowledge with others, then creating your own radio show on your own radio station is for you. Setting up a radio station won't take any initial financial investment other than purchas

Posted on:03-06 View:367
How to Get Studio Equipment for a Radio Station

Finding the right studio equipment you need for your station depends on your specific radio station needs. Good quality studio equipment is important for a radio station to run smoothly. Different types of equipment, like microphones, produce a certain atmosphere for broadcasting and are essential

Posted on:03-06 View:1050
Make a PLL Stereo FM transmitter circuit

BH1417 IC The circuit shown here is of a good Stereo FM transmitter that can transmit high quality signals up to a range of 70 feet. The circuit is based on BH1417 PLL stereo transmitter IC from Rhom semiconductors. The IC has separate audio processing sections for the left and right channels,

Posted on:03-06 View:9608

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