Technical Specifications
| Attribute | Details |
|---|---|
| Manufacturer | SILTRONIX |
| Model | 400H |
| Product Category | Transceiver |
Mic Wiring
Pin 1 – RX
Pin 2 – Mic Audio
Pin 4 – Shield / Ground
Pin 4 – Switch Line
The Old Tube Radio Archives
Old Tube Radios and Electronics Database
