Shortwave 400 Watt class D AM broadcast transmitter.Frequency range: 3.5Mhz-7.5Mhz

 Shortwave radio broadcast transmitter


This is a high efficiency Am transmitter in SW band using dds for frequency synthesis and class D full bridge RF amplifier with pwm audio modulator.
What you see is a complete transmitter assemled and fully tested.The unit is capable to produce a carrier of 400w Max and 1600watt PEP.


Technical data:
Power requierements:
230V AC 

Performance:
Output freq. range: 3.5Mhz-7.5Mhz(user adjustable).In 2 versions:
a:3500 khz to 5500 khz
b:5500 khz to7500 khz




Step size:1Hz,10Hz,100Hz,1KHz,10KHz,100KHz.
Audio response:50hz-10khz +- 1.5db.
Audio input: XLR balanced 600ohm at 1V rms.
A limiter and negative peak limiter is provided.
Carrier level:set by the user
Output power:0-400Watt max no modulation
Antena connector: UHF SO239

The transmitter includes protection for excessively SWR and protection for excessively heat.
Watt meter,P.T.T switch,SWR metter and modulation meter is included.
Weight:12.5 kg


If you have any questions feel free to contact me at pa.sa.t.electronics@hotmail.com


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