High Frequency Oscillation: 21MHZ high frequency oscillation, crystal Y1 in the circuit is a parallel resonance, equivalent to the inductor. Structure: Mainly consists of power input, sound amplification, sound modulation, 21MHZ high frequency oscillation, Class C high frequency amplification, 21MHZ low pass filter.
eBay
Filter Network: Low-pass network filters out high-order harmonics and achieves a sinusoidal waveform. High-Frequency Modulation: Sound capacitors and bias resistors for sound modulation. Transmitter Frequency: 530-1600kHz (AM radio band).
eBay
Wide Modulation Range: With a modulation range of 600KHz‑1500KHz, this transmitter allows you to transmit your audio signals over a wide frequency range. Compact and Portable: This AM transmitter is designed in a compact size, making it easy to carry and use anywhere.
eBay
Assembled version, if there are slight differences in parts, it not affect the use of the product.
eBay
You will save a fortune on batteries! This tiny transmitter fits into the palm of your hand and can be tucked behind you radio, Yet has enough power to give a good signal. Switch on and tune your radio in.
eBay
Decommissioned from a working environment. The synthesizer is not present for broadcast. Any questions please ask
eBay
FILTER NETWORK: L2, L3, C26, C27 for the low pass network, filter out the high harmonics, so that the waveform is close to sinusoidal, matching the antenna. 1 x Transmitter. Sound Source: CD, Desktop Computer, Cell Phone, Etc.
eBay
Plug the FM transmitter into your car's cigarette lighter socket to get power and search for this device. Sleek, rugged design with LED frequency indicator. Support mp3, WMA format music. FM transmission frequency: 87.5-108Mhz.
eBay