Working
frequency |
531kHz to 1602 kHz |
Power
output |
Maximum 450W (HCD450/S4), 375W
(HCD375/S4), 300W (HCD300/S4), 225W (HCD225/S4) or 150W (HCD150/S4),
|
|
+1 - 0 dB into 50 W load with VSWR
not exceeding 1.4:1 at the carrier frequency. Remote control of output
power available, down to –4dB (40% of maximum rated output) |
|
Power outputs can be doubled with
combined pairs |
Modulation
rating |
Rated for continuous 100% sine
wave modulation in the range 40 Hz to 10 kHz in ambient temperature 0 to
45ºC. Altitude to 1000 m. Capable of 125% positive modulation |
Carrier
shift |
Not greater than 5% amplitude at
100% modulation |
AF
response |
± 1.5 dB wrt 50% modulation at 1
kHz over the frequency range 40 Hz to 6 kHz. Better than -3 dB at 10 kHz |
Distortion-harmonic |
Not exceeding 2% THD at modulation
levels up to 90% at any modulating frequency in the range 40 Hz to 6 kHz |
Intermodulation |
With two modulating tones in the
range 100 Hz to 5 kHz each modulating the transmitter to 47.5% no
intermodulation products exceed -40 dB wrt 100% modulation |
Noise
level |
Amplitude modulated noise in the
range 40 Hz to 10 kHz at least 60 dB below 100% modulation |
Spurious
outputs |
When operated into a test load the
mean power of any spurious signals will not exceed -60 dB wrt carrier |
Harmonics |
Harmonics of the carrier frequency
will not exceed -50 dB wrt carrier |
AF
input |
600 W balanced. 0 dBm to +10 dBm
for 100% modulation |
Mains
supply |
230V +10%, -6%, 50 Hz ± 2
Hz
|
|
Power consumption of HCD450/S4
pair at 450W carrier is 700W and with 100% modulation is 1000W |
Size |
Single Tx case: 9U high, 19"
rack mounted
|
|
Installed Tx with 3U vent panels
top & bottom: 15U high |
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