- A Brief History of the National Company, Inc.
- Information page that features historical facts about the National Company, Inc. in the technological aspects of communication.
- KA7NOC
- Personal page that presents photos of the NCX-3 and NCX-5 transceivers.
- National HRO Transmitter
- Collection of detailed photos about National HRO matching transmitter.
- National HRO-60 and NC-46
- National HRO-60 and NC-46 technical page that provides detailed specifications about the tube-type short wave receivers.
- National NC-60 and NC-98
- Displays the tube-type short wave receivers NC-60 and NC-98, with specification features and images.
- National NTX-30 / HRO Sr
- Features specification details, photo and description of the National NTX-30 receiver.
- National Radio Co.
- Includes company background information, plus details on their product lines, and photos of vintage radios.
- National Radio Company Tour
- Provides historical overview of the company, with links on pioneering products.
- NC-46 Receiver
- Showcases the NC-46 vintage product's features and specifications, with photo presentation.
- Radio Bay
- Features specifications and pictures of the National Radio Company product lines, hints and tips, and related links to other information.
- WA9WFA: Classic Ham Radio and National SW-3
- Classic amateur radio site that provides photos and information about the vintage Ham radio and National SW-3 receiver.
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