HE388A/HEM388A/HES388A integrated broadband amplifier, frequency range: 20 to 400MHz, good 50Ω impedance matching, easy to cascade use, microwave thin film circuit structure, stable and reliable electrical performance, standard all-sealed tube shell packaging, meeting military temperature working conditions: -55 to +85℃.
The manual details the performance parameters of the HE388A series broadband amplifiers, covering a frequency range of 20‑400 MHz, typical small‑signal gain of about 25 dB, gain flatness of 15 dB, and input/output VSWR of 2.0:1. Output power is specified at 22 dBm with a maximum input power of +7 dBm, and the device operates from –55 °C to +85 °C.
Physical aspects include a fully sealed TO‑8/SMO‑8 package, SMA connector options, and recommended external component values (e.g., C=3.3‑22 µF, C=3300‑6800 pF). Installation dimensions and mounting instructions are provided in the accompanying package‑size document. This manual is written in Japanese.
| Frequency range | 20–400 MHz |
|---|---|
| Small‑signal gain (Gp) | 25 dB (typical) |
| Supply voltage | 12 V |
| Maximum input power | +7 dBm |
| Operating temperature | -55 °C to +85 °C |
The amplifier operates from 20 MHz up to 400 MHz.
Typical small‑signal gain is about 25 dB.
The device is designed to run from a 12 V supply.