- 51J-4 Receiver
- Product designed for communication applications where stability and dial accuracy of the highest order are the prime requisites. Includes specifications and detailed photos.
- AR88 Receiver
- General-purpose communications receiver manufactured by RCA. Includes display of photos, general information and data.
- Boatanchor Dreams
- Personal site of an amateur boatanchor that contains reference information on the R-390 series of radios, with featured articles, and links.
- DXing.com: Tube Type Receivers
- Features collection of tube-type short wave receiver brands, with photos and product specifications.
- German Tube Based Receivers
- Page dedicated to the German tube-type communications equipment. Includes news updates, and contact facts.
- HRO Receiver Models
- Provides descriptions on the receiver models and designs, including data on tube line-ups.
- HRO-600 Receiver
- Information about the classic radio receiving set that includes features, photos, and specification details.
- Keith's Racal Page
- Contains historical overview of the company and series of RA receivers and equipment information with featured photo links.
- The Select-O-Ject
- Adjunct receiver used as a sharp amplifier or a single-frequency rejection filter. Provides sketch diagram and schematic information.
- Yaesu FR-50 Receiver
- HF Ham bands receiver suitable for the transceiver operation with SSB transmitter model FL-50. With images and specification contents.
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