Electrical
|
| RF Carrier Output Power (A3E) |
|
100 kW (400 kW PEP) |
| Reduced RF Carrier Output Power (A3E)
|
|
25 kW - 100 kW |
| RF Output Power 2-Tone (h3E) |
|
200 kW PEP |
| RF Output Power Program (R3E) |
|
300 kW PEP |
| RF Output Impedance |
|
50 or 75 ohms unbalanced; 300 ohms balanced (balun supplied with transmitter). |
| Standing Wave Ratio |
|
2.0:1 VSWR at full power |
| Tuning Time |
|
An average of 10 typical frequency changes take less than 25 seconds each. |
| Frequency Range |
|
3.2-22 MHz continuous in 1 kHz increments, (2.3-16 MHz or 3.95-26.1 MHz optional ranges). |
| AC Power Source |
|
Customer specified: 360-480 VAC, 50/60 Hz, 3-phase, other voltages available on request. |
| Efficiency |
|
Greater than or equal to 70% |
Audio
|
| Modes of Emission |
|
AM (A3E), SSB (h3E & R3E) |
| Modulation Method |
|
High level plate modulation using high efficiency solid state modulator. |
| Modulation Capability |
|
70% continuous; 100% sinusoidal modulation at audio frequencies from 50 to 7,500 Hz for up to 10 minutes per hour. |
| Controlled Carrier Level Modulation (CCM) |
|
The 418DRM is capable of operating in CCM mode, a power saving modulation technique that allows scaling of the carrier amplitude to the modulation percentage, automatically reducing carrier level as much as 6 dB. |
| Harmonic and Spurious Radiation |
|
Meets or exceeds FCC and CCIR requirements |
| Audio Response (A3E) |
|
+/-0.5 dB from 50 to 4,500 Hz, +/-1 dB from 4,500 to 7,500 Hz at less than or equal to 70% modulation. |
| Audio Response (h3E & R3E) |
|
+/-0.5 dB from 100 to 4,500 Hz at any level up to the average power capability. |
| Audio Harmonic Distortion (A3E) |
|
<2% at 90% modulation from 50 to 4,500 Hz; 3% from 4,500 to 7,500 Hz. |
| Audio Harmonic Distortion (h3E & R3E) |
|
<2% at 90% at full average power capability from 100 to 4,500 Hz. |
| Intermodulation Distortion (A3E, h3E & R3E) |
|
At least -35 dB relative to either tone of a two-tone test signal. |
| Carrier Reduction (h3E & R3E) |
|
-3 to -24 dB relative to PEP, adjustable in 3 dB steps.
|
| Audio Input Requirements |
|
Adjustable from -8 to +10 dBm for 100% modulation. |
| Audio Input Impedance |
|
600 ohms or 10K ohms, balanced. |
| Carrier Level Shift (A3E) |
|
Less than or equal to +/-3% shift at 100% tone modulation with 1 kHz sinewave exclusive of powerline variations. |
| Carrier Noise |
|
-56 dB unweighted referenced to 100% modulation with a 1 kHz tone. |
Mechanical
|
| Weight |
|
12,320 lbs. (5,587 kg) before packing |
| Size |
|
192 in. (488 cm) wide, 60 in. (152 cm) deep, 85 in. (216 cm) high |
Environment
|
Ambient Temperature
Range |
|
Indoors: +40 to +111 degrees F (+5 to +45 degrees C); Outdoors: +14 to +111 degrees F (-10 to +45 degrees C) |
| Relative Humidity Range |
|
0 to 95% relative humidity, non-condensing |
| Altitude |
|
Up to 6,000 ft. (1,829 m) above sea level |
| Cooling |
|
Water, heat exchanger (supplied), and air cooling |
