Ramsey Electronics Phone Patch Mixer Kit PPM3 Especificaciones descargar pdf (Pagina 12)

3.1 The Micro Radio Station

A radio station in its most simple form is a microphone connected to a transmitter, and there are

hundreds of self-build kits for the ingenious technician. These primitive transmitters vary much in

performance and technical standards, sop they will not be considered in this manual. It is, however,

possible to build a professional FM transmitter for prices from 150 US$, and in this chapter we will

give two examples of Micro Radio Stations, which are absolutely professional with regards to

technical quality.

Example 1

This is a very traditional set-up with a

microphone connected to a small mixer. The

output of the mixer feeds the FM Transmitter,

which is connected to a vertical omni-directional

antenna. The host can listen to the programme

via the mixer and a set of headphones. A FM

Walkman Receiver is included for the purpose

of checking that the programme is actually

broadcast. This is all you need to have a Micro

Station, which comes at a total price of less than

800 US$:

 1 FM Stereo Transmitter 1 Watt, (2 Watt

ERP), with cable and antenna

 1 Mixer

 1 FM Walkman

 1 Dynamic microphone

 1 Headphone

Fig. 10: Veronica 2 watt FM Stereo Transmitter Package

Fig.11: Behringer UB 502 Mixing Console

This system is capable of reaching a small village and

surrounding areas with a radius of approx. 2,5 km. It

is operated on 100VAC – 250VAC or a 12 volt car

battery. It has a small vertical antenna that can easily

be mounted on a standard water pipe on top of a roof.

This antenna comes with a 25-meter low-loss coax

cable to be connected to the transmitter.

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Ramsey Electronics Phone Patch Mixer Kit PPM3 Especificaciones Pagina 12