| National Co., The Inc. |
| |
Model: HRO | Chassis: | Year: Pre October 1937 |
| Power: | Circuit: | IF: |
Tubes:
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Bands:
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Resources:
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| Riders Volume 8 - NATIONAL 8-1 |
| Riders Volume 17 - NATIONAL 17-7 |
| Riders Volume 17 - NATIONAL 17-8 |
| Riders Volume 17 - NATIONAL 17-9 |
| Riders Volume 17 - NATIONAL 17-10 |
| Riders Volume 17 - NATIONAL 17-11 |
| Riders Volume 17 - NATIONAL 17-12 |
| Riders Volume 17 - NATIONAL 17-13 |
| Riders Volume 17 - NATIONAL 17-14 |
| Riders Volume 17 - NATIONAL 17-15 |
| Riders Volume 17 - NATIONAL 17-18 |
| Riders Volume 17 - NATIONAL 17-19 |
| Riders Volume 17 - NATIONAL 17-20 |