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Radio Aids to Aircraft Navigation: Low-Frequency Ranges & Direction Finding, July 1960 Electronics World - RF Cafe
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Radar Systems and Radio Aids to Navigation: Sen, A. K., Bhattacharya, A. B.: 9781683921189: Amazon.com: Books
![ALRS - Radio AIDS to Navigation, Satelite Navigation Systems, Legal Time, Radio Time Signals and Electronic Position Fixing Systems: Volume 2, Part 1 (Admiralty List of Radio Signals) - Unknown Author: 9780707744445 - AbeBooks ALRS - Radio AIDS to Navigation, Satelite Navigation Systems, Legal Time, Radio Time Signals and Electronic Position Fixing Systems: Volume 2, Part 1 (Admiralty List of Radio Signals) - Unknown Author: 9780707744445 - AbeBooks](https://pictures.abebooks.com/isbn/9780707744445-us.jpg)
ALRS - Radio AIDS to Navigation, Satelite Navigation Systems, Legal Time, Radio Time Signals and Electronic Position Fixing Systems: Volume 2, Part 1 (Admiralty List of Radio Signals) - Unknown Author: 9780707744445 - AbeBooks
![Radio Aids - Radio Aids to Navigation. R. A. Smith; Cambridge University Press (Modern Radio Technique Series); November 1947; 114, xi, 7 plates; cloth bound 8·7 × 5·4 inches; price 9s. | The Journal of Navigation | Cambridge Core Radio Aids - Radio Aids to Navigation. R. A. Smith; Cambridge University Press (Modern Radio Technique Series); November 1947; 114, xi, 7 plates; cloth bound 8·7 × 5·4 inches; price 9s. | The Journal of Navigation | Cambridge Core](https://static.cambridge.org/content/id/urn%3Acambridge.org%3Aid%3Aarticle%3AS0373463300027570/resource/name/firstPage-S0373463300027570a.jpg)