Skip to content

Design and characterisation of a phaselocked v.h.f. land mobile radio receiver

Research output: Chapter in Book/Report/Conference proceedingConference contribution

  • JP McGeehan
Original languageEnglish
Title of host publicationConference on Civil Land Mobile Radio
Place of PublicationLondon
Publisher or commissioning bodyInstitution of Electronic and Radio Engineers (IERE)
Pages37 - 46
Number of pages10
ISBN (Print)0903748274
StatePublished - Nov 1975
EventConference on Civil Land Mobile Radio - Teddington, United Kingdom


ConferenceConference on Civil Land Mobile Radio
CountryUnited Kingdom
Period1/11/75 → …


In this paper a `long loop' VHF phase-locked AM receiver with synchronous detector is described. The effect of the narrow-band Chebyshev I.F. filter on receiver lock-in range, hold-in range and capture time is investigated as a function of carrier level, -60 to -120 dBV, for a range of low pass filter time constants. The transient response of the Chebyshev filter and instantaneous limiting in the I.F. strip are shown to play a crucial role in determining the time which the receiver takes to lock onto the carrier. The receiver is not significantly more complex or expensive than sets currently in use and has the advantage that it may also be used to demodulate DSBDC signals

Additional information

Conference Proceedings/Title of Journal: Conference on Civil Land Mobile Radio Rose publication type: Conference contribution Sponsorship: The work described was carried out under contract from the Directorate of Telecommunications, Home Office, and the author wishes to thank the Director for his support and permission to publish this paper

Research areas

  • mobile radio systems, phase-locked loops


Conference on Civil Land Mobile Radio

Duration1 Nov 1975 → …
CountryUnited Kingdom

Event: Conference

View research connections

Related faculties, schools or groups