VHF FM Radio Broadcast Programme
- FM Exciter: FME-20
- Stereo Coder: SK-1
- Linear Power Amplifiers: DFMA-250, DFMA-500, DFMA-1000
- RDS Coder: RDS-1
- Radio Link: LD-400/2, LP-400/2
- Projects and Engineering
- Servicing and technical maintenance
FM Exciter FME-20
- It is an professional radio broadcast unit, that can be used as an independent transmitter of low power, or as an exciter for amplifiers of high power.
- Microprocessor controlled
- Digital frequency synthesis with 10 kHz resolution
- Build in temperature controlled crystal oscillator 6,4 MHz
- High frequency stability ±1 ppm
- Broad band output amplifier in MOS FET technology
- Output power adjustable from 1 to 30 W
- Low level of noise and distortion
- All necessary parameters programmable by front panel keyboard
- Monitoring of all status parameters by front panel display
- Option: remote control
Stereo Coder SK-1
- High level of channel separation
- Stereo transmission according to CCIR Rec.450, pilot tone method
- High level of signal/noise ratio
- Electronic symmetry of input
- Two LED bars for measurement of input parameters
- Wide input sesitivity range from –6 to +12 dBm
- Usable with any standard exciter
- RDS input
Linear Power Amplifiers DFMA250, 500 and 1000
- In production line are three types of linear power amplifiers for output power 250, 500 and 1000 W.
- MOS FET technology
- Microprocessor control of all relevant parameters
- Broad band output from 87,5 to 108 MHz
- Build in low pass filter for harmonics suppression
- Modular design
- Protection against excessive reflection, temperature and voltage over
- Front panel display enable measurements of output power, reflected power, DC voltages and currents
- Cooling by forced air blowers
- 2 kW power output option
RDS Data Coder RDS-1
- RDS system enables data transmission by UHF broadcast transmitters in parallel with standard broadcast programme.
- Main features of RDS-1:
- Programme identification (PI)
- Program type (PTY)
- Decoder identification (DI)
- Alternative frequencies (AF)
- Programme station name (PS)
- Traffic programme (TP)
- Traffic annunciation (TA)
- Music/speach (MS)
- Clock time and date (CT)
