Röhrenmarken / Tube Brands noch in Arbeit / still under construction
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| RADEX |
| RADIO KNIGHT |
| RAY_O_VAC |
| RAYTHEON |
| REAL TONE |
| RECTOBULB |
| RECTUBE |
| RELIABLE |
| REXTRON |
| ROICE |
| ROLLS ROYCE |
| ROXY |
| ROY |
| ROYAL BLUE |
| ROYALFONE |
| ROYALTRON |
| RRA |
| RFT |
| Radio Record |
| RT |
| ROUND |
| RECTRON |
| RADIO SECTEUR |
| RCA |