Alinco ERW-4C

ERW-4C Front (image by KQ4K)

ERW-4C Back (image by KQ4K)

Overview

The ERW-4C cable is used to program DR-135T, DR-235T (DR-235T MkIII), and DR-635T radios. It may possibly support other Alinco radios, and does work with the Jetstream JT220M radio.

There are two copies of the schematic. The first one appears to be an original Alinco schematic, and uses transistors and diodes typically found in an Alinco radio. The second version is a reverse engineered one, using more commonly available parts.

Documents, Schematics, Etc

• ERW-4C Schematic (probably from Alinco) (62 KB)
• ERW-4C Schematic (reverse engineered) (40 KB)