FM PLL Stereo Transmitter 88 - 108 MHz
Introduction
The FM PLL Stereo Transmitter is designed to be a simple, and easy to use FM Transmitter based on a colpit oscillator
which is VCO controlled by a PLL from national called LMX2306.
Futhermore the transmitter has an onboard RDS Encoder for FM station name, and for text messages (song titles),
Traffic Announcement and PTY can also be set.
The FM transmitter can be set to transmit within 88 - 108 MHz, in a interval of 100KHz (Infect it can handle from 75MHz
to 125MHz), the FM transmitter is primarily controlled via onboard keypad / display or RS485 interface, where it is possible
to set the FM Frequency, FM Station name, Song Title, Traffic Announcement and PTY info.
All my devices that have a RS485 bus uses a protocol, which handles node addresses, meaning that
devices has there own uniq address, that again means that the The FM PLL Stereo Transmitter, can be selected to interract
with different devices on a bus.
Features:
- Power supply DC: 12 - 16 VDC.
- FM PLL Transmitter 88 - 108 MHz.
- RDS Encoder (FM Station name, Song Title, Traffic Announcement, PTY info).
- ATMega 128 16MHz (128 Kb Flash, 4Kb SRAM).
- LCD display 4x16.
- 8 KB Seriel EEPROM.
- Temperature sensor (LM75).
- 1 x RS232 (Console).
- 1 x RS485 .
- 4 x Buttons (UP, DOWN, OK and CANCEL).
- ISP connector (ATMega 128).
- PCB size: 160x100 mm.
