MFTX400 400W AM Transmitter
The MFTX400 is a 400W (carrier rest) solid state AM broadcast transmitter. It uses state-of-the-art digital modulation to deliver the most power efficient AM transmitter in the world.
With user adjustable output power and frequency, as well as comprehensive digital and analogue remote control, these units are extremely flexible.
For maximum ruggedness these transmitters offer extensive protection functionality including over SWR and over temperature. All alarms are self resetting, requiring no user intervention. This ensures that you stay on air even under the most difficult conditions.
The MFTX400 includes a built in compressor/limiter with independently settable positive and negative peak limiting. Audio filtering can be applied as either a Butterworth or Bessel characteristic, or disabled completely. This represents a substantial cost saving over external audio processing. These transmitters are designed specifically to be driven from satellite or network audio sources.
An optional stereo encoder can be included to allow stereo broadcasting.
Day/night power control is included as standard and can be used to automatically switch between two preset power levels, dependent on the time of day.
An un-cluttered front panel offers easy and intuitive control and monitoring of all transmitter functions.
As with all of SRK’s products, these transmitters are designed and manufactured in Australia. They are supported by extensive documentation and are backed by a three year warranty.
|Carrier rest power||40-400W|
|Audio response||10Hz – 10KHz -3dB|
|Audio input level||-10dBm to +10dBm|
|Frequency range||522KHz – 1705KHz|
|Frequency stability||+/- 2ppm|
|Spurious and harmonics||-60dBc|
|Hum and noise||Better than -60dB|
|Supply voltage||170 -264VAC single phase 50-60Hz|
|Power factor (full power)||>0.94|
|Mains power at full power, 0% modulation||550W|
|Size||3U 380mm deep|
|Ambient temperature||0 – 50°C|
|Output connector||N type|
|Stereo format||C-QUAM (optional)|
|Mains input connector||IEC|
|Audio connector||3 pin XLR female|
|VSWR||2:1 at full power|
|Audio input impedance||10K|
|Squarewave tilt||<1% @40Hz|
|Squarewave overshoot||<1% @400Hz, 50% modulation, Bessel filter|
|Audio filtering||None, 8th order Butterworth, 8th order Bessel selectable|