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The five models in the Hughes 1177/1277 Series of Standard Band Traveling Wave Tube Amplifiers cover the 1 to 18 GHz frequency range with a minimum power output of 10/20 watts CW. Each amplifier consists of a PPM metal-ceramic traveling-wave tube, a regulated solid state power supply and complete air cooling system assembled within a compact instrument case. The 1177/1277's light-weight compactness makes it ideal for either bench or 19-inch rack mounting. This size-weight feature is the result of the unique circuit design. The 1177/1277 has a wide variety of uses in such applications as EMI testing, antenna testing, communications, component testing, system testing and general laboratory requirements.
Product Specifications:
| Model Number | Pout Watts | TWT Type | Frequency GHz | Nominal Gain dB. | RF Connectors |
| 1177H09 | 10 | 417HD | 1.0 - 2.0 | 30 | N (f) |
| 1177H10 | 20 | - | 1.4 - 2.4 special build | 30 | N (f) |
| 1177H01 | 10 | 564H | 2.0 - 4.0 | 30 | N (f) |
| 1177H13 | 10 | 646 | 3.0 - 8.0 | 30 | N (f) |
| 1177H02 | 10 | 640H | 4.0 - 8.0 | 30 | N (f) |
| 1177H03 | 10 | 771 | 8.0 - 12.4 | 30 | N (f) |
| 1177H04 | 10 | 848 | 12.4 - 18.0 | 30 | N (f) or WR-62 |
| 1177H05 | 20 | - | 2.5 - 4.0 special build | 30 | N (f) |
| 1177H07 | 10 | 771 | 6.5 to 13.5 | 30 | N (f) |
| 1177H08 | 10 | - | 10.5 - 18.0 | 30 | N (f) |
| 1177H16 | 10 | 664 | 7.2 - 8.4 | 30 | N (f) |
| 1177H17 | 10 | 783H | 7.0 - 16.3 | 30 | N (f) |
| 1177H15 | 10 | 846H | 8.0 - 18.0 | 30 | N (f)/WRD650 |
| 1077H11 | 1 | 911H | 18 - 26.5 | 30 | WR-42 |
| - | - | - | - | - | - |
| 1277H09 | 20 | - | 1.0 - 2.0 | 30 | N (f) |
| 1277H01 | 20 | 568H | 2.0 - 4.0 | 30 | N (f) |
| 1277H02 | 20 | 640H | 4.0 - 8.0 | 30 | N (f) |
| 1277H03 | 20 | 783H | 8.0 - 12.4 | 30 | N (f) |
| 1277H04 | 20 | 848H | 12.4 - 18.0 | 30 | N (f) or SMA (f) |
Gain: 30 dB minimum
Duty: CW
InputVoltage: 120 Vac +/- 10%
Input Frequency 50/60 Hz
Power Consumption: 250 W
Noise Figure: 35 dB
maximum
Spurious Modulation (at saturation): -50 dB minimum
VSWR: 3:1
maximum
Hughes 1177/1277 (10/20 Watt) Series Available Options:
OPTION A -
220/240 VAC Prime Power.
OPTION B - DC Heater Supply - Reduces spurious
content.
OPTION C - Helix Voltage Regulator - Reduces gain variation due to
temperature effects.
OPTION D - Unattended Protection - Turns off all power
in the event of helix overload.
OPTION E - Rack Mount
OPTION F -
Local/Remote Provides remote control of the amplifier.
OPTION G - 48 to 420
Hz Line frequency.
OPTION H - TTL Remote Interface.
OPTION 1 - 28VDC
Prime Power.
OPTION J - Output Isolator Protects the TWT from high VSWR
conditions. (amplifier may have slightly lower output power)
OPTION K - High
Gain, adds SS amplifier.
OPTION L - Automatic Reset from "Ready" to RF
ON".
OPTION M - -48VDC Prime Power.
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