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| Company | Tradename | # Tubes | Tube List | Ballast | Rider Vol-Page |
|---|---|---|---|---|---|
| Air King Products Company, Inc. | Air King | 4 | 77, 78, 25Z5, 43 | 5-1 | |
| Colonial Radio Corporation | Colonial | 4 | 77, 78, 25Z5, 43 | 4-13 | |
| Detrola Radio Corporation | Detrola | 4 | 77, 78, 25Z5, 43 | 6-2 | |
| Detrola Radio Corporation | Detrola | 4 | 77, 78, 25Z5, 43 | 6-1 | |
| Detrola Radio Corporation | Detrola | 4 | 77, 78, 25Z5, 43 | 7-1 | |
| Echophone Radio Corp. | Echophone | 4 | 77, 78, 25Z5, 43 | 5-1 | |
| Federated Purchasers, Inc. | Acratone | 4 | 77, 78, 25Z5, 43 | 6-3 | |
| Halson Radio Manufacturlng Corp. | Halson | 4 | 77, 78, 25Z5, 43 | 4-3 | |
| R. K. Radio Labs, Inc. | 4 | 77, 78, 25Z5, 43 | 7-m11 | ||
| Royale Radio Mfg. Co. | 4 | 77, 78, 25Z5, 43 | 5-m17 | ||
| Sears, Roebuck & Company | Silvertone | 4 | 77, 78, 1v, 43 | 4-3 | |
| Sears, Roebuck & Company | Silvertone | 4 | 77, 78, 25Z5, 43 | 10-92 | |
| Sears, Roebuck & Company | Silvertone | 4 | 77, 78, 25Z5, 43 | 5-17 | |
| Sears, Roebuck & Company | Silvertone | 4 | 77, 78, 25Z5, 43 | 5-11 | |
| Zephyr Radio Company | Zephyr | 4 | 77, 78, 25Z5, 43 | Ballast tube | 9-1 |