HE761/HEM761 is an integrated broadband VGC/AGC amplifier with a frequency range of 20 to 500MHz. It uses active bias design to provide temperature compensation. It has good 50Ω impedance matching and is easy to cascade. The microwave thin-film circuit structure has stable electrical performance and is packaged in a standard hermetically sealed tube shell. It meets military working conditions of -55℃ to +85℃.
The HE761/HEM761 is a broadband VGC/AGC RF/microwave integrated amplifier covering a frequency range of 20 – 500 MHz, with temperature‑compensated active bias, 50 Ω impedance matching and a sealed tube‑type package. It meets military temperature conditions of –55 °C to +85 °C and offers a typical small‑signal gain of 18.5 dB.
The manual includes performance characteristics, typical gain and VSWR curves, electrical performance tables, limit parameters, and detailed connection diagrams. It also gives installation notes, static‑sensitivity precautions, and package dimensions for both TO‑8G and SMO‑8E housings. This manual is written in Chinese.
| Frequency range | 20–500 MHz |
|---|---|
| Maximum input power | +10 dBm |
| Maximum supply voltage | +15 VDC |
| Operating current | 35 mA |
| Small‑signal gain (Gp) | 18.5 dB |
| Gain flatness | ±0.5 dB |
| Noise figure (Fn) | 4.0 dB |
| VSWR | 1.8:1 |
| Linear output power | 5.0 dBm |
| Operating temperature range | -55 °C to +85 °C |
| Maximum storage temperature | +125 °C |
It operates from 20 MHz up to 500 MHz.
The maximum input power is +10 dBm.
The circuit is static‑sensitive; users should take anti‑static precautions while connecting it.