Am transmitter 250W(1000W PEP) for mw band,classD,PWM,DDS

Description

This is a high efficiency,high quality  am transmitter for the medium wave band (540KHZ-1750KHZ).This is not a class ab linear transmitter, this is high level modulation
direct to the drain of a push-pull mosfet circuit.PWM modulation and class D output circuit
ensure the high efficiency  and high quality of audio.We use the better electronics components
and together with 35 years experience is the guarantee for this transmitter.
main characteristics
Operating frequency: 540Khz-1750khz in the region you want
e.g 1750-1400khz,1400-1000khz,1000khz and down,or else other
The transmitter is broadband  the frequency determined by the 8pole low pass filter,so if
the filter have upper cut 1750khz and you want to go to 1000khz you can use an extra low pass filter for this frequency.
Frequency step: 1hz ,10hz,100hz,1Khz,10Khz,100Khz,1Mhz from DDS
output power     : the power is adjastable from 0-250w continuous.
the out is 50ohm in a UHF male connector
watt swr meter : 100w and 1000w
Audio : 1v peak,balance input, response 15hz -10khz(with lpf) ,THT<1% ,110% Peak positive modulation at 250w ,negative and positive peak limiter adjustable,
vu meter for audio modulation,xlr connector
efficiency >90%
Power supply : 110v-240v ac
24 hours continues operation
Size  45cmX45cmX10cm
weight  : 7.5kg
All schematics in a CD.
for more details please send me a message