With proven quality of ORIENT100
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A 0.5 WATT TUNABLE MOSFET AM RADIO TRANSMITTER FOR 525-1725 KHZ

Here's a very nice handcrafted AM broadband tunable radio transmitter which is designed to broadcast music. The operating frequency range is 525-1725 KHz with VFO control and the output power is 0.5 Watts (500 mW). It's frequency can be adjusted by a single tuning knob which controls a special circuit. This transmitter is an enchanced version of my tunable low power AM unit which offers more range and utilizes 4 transistors. You can connect the AF input (modulator input) directly to a casette player, MP3 Player, Ipod, PC sound card, mobile phone or CD player's output and you can listen your music on your AM radio whatever if the radio is old or new. Also you can connect a microphone preamplifier if you want to transmit your voice. It operates on 12 Volts DC (DC power supply operated) (power supply not included). You only need a good quality DC 12V power adapter and a telescopic or wire antenna (a few meters long) to run this AM transmitter. A 5W 60V RF mosfet is used at the output section to withstand high VSWR levels due to random type mismatched antennas.
I am an experienced radio receiver and transmitter builder, constructing radios and transmitters for more than 40 years, so you can buy confidently.

Features:
Covers full AM broadcast band (525-1725 KHz).
Tunable on any desired frequency within it's coverage.
IRF540 mosfet as PA stage.
BD139 AF power transistor as modulator stage.
TL072 opamp as oscillator.
MPSA13 transistor as high gain audio amplifier stage.
Compact lightweight design.
Operates on 12 Volts DC 150-200 mA.
Easy to setup and operate.
Very stable and high-performance unit.