| Brand | BMG |
|---|---|
| Volt | 2 ea 1.5 volt batteries |
| Country of Origin | United States |
Check the listing for details. BMG - VINTAGE Injector Test probe (Signal Tracing). Condition: Seller refurbished, Made in United States. Listed at 87.00 USD. A BMG (often stamped BMG Electronics or just BMG) was a small, self‑contained signal injector used by radio/TV techs in the 1950s and early 1960s. It produced a simple audio‑frequency tone that could be injected into.