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250W Transmitter

 

 

By DB Electronica

The PM 300 is a compact rack mount transmitter that can source from 0 to 250 watts of power. An internal switching power supply is used, that enables 110 VAC or 220 VAC operation. The frequency can be set anywhere between 87.5 MHz to 108 MHz with a resolution of 10 KHz! No tuning or adjustments are required. This unit features a built in high performance stereo generator and a audio processor with wide compression threshold and release time adjustments. The unit is fully compatibly with digital audio mixing consoles.

A remote control option can be ordered that allows remote control of power level, on/off, alarms reset, Pfwd,Pref, frequency deviation measurement and alarms status. Very good frequency stability is assured by the digital PLL circuitry and a low drift quartz oscillator. Front panel metering allows monitoring of output power, reflected power, deviation, internal voltages, L&R, MPX and 19 KHz levels. Internal protection circuitry is incorporated that reduces output power in the case of high VSWR or over temperature conditions. This allows you to remain on the air without causing any harm to the transmitter. An internal roll of filter is used to give you a very clean, low harmonic output.

 

SPECIFICATIONS

Bandwidth 87.5 to 108 Mhz Channel resolution 10 Khz
Audio response 20 Hz to 15 Khz Audio impedance 600 ohms balanced
Audio input level +9 or -8 dbm Signal to noise 85 db
Pilot frequency 19 Khz crystal Stereo separation 60 db
Distortion 0.08 % at 1Khz Drift <300 Hz at 1 year
RF output impedance 50 ohms RF output power 0 to 250 watts
Spurious output -80 db or more Harmonics -63 db
Dimensions 19" 3U Weight 32 Kg
Power requirements 110/220 VAC

 

Price list

PM 300 variable power 250 watt stereo transmitter $4950US
PE 300/R includes remote control option  $5495US

 

 

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