11  Radio Microphone Frequencies

VHF frequencies

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* This frequency is not fully compatible with the other Coordinated/Deregulated frequencies and may result in intermodulation.

The information in this chapter is reproduced by courtesy of John Willets, MIBS, of Sennheiser UK and the Institute of Broadcast Sound. Radio microphone frequencies tend to be changed from time to time and the reader is advised to check with JFMG (the licensing authority) whose address is given at the end of this section.

In the table shown on page 72 News frequencies are what the term implies – they may be used by anyone engaged in news gathering. Shared frequencies are for general use anywhere in the UK but before using a radio microphone checks should be made that there is no one in the vicinity using the same frequencies. Coordinated frequencies are for use at predetermined sites and must be cleared with JFMG beforehand. Deregulated frequencies can be used by anyone with type-approved equipment.

Shared frequencies:TV Channel 69:

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* These frequencies, although legal, may cause problems with some equipment due to their closeness to adjacent channels.

Coordinated Frequencies for the London Area

This table lists the channels allocated to radio microphones only. The full allocation list is available from JFMG, as are similar lists for many other areas of the country.

TV Channel

Notes

36

Shared with Radar

38

Shared with Radio Astronomy

39

May be available with channel 38

42

3rd choice for new assignments

43

3rd choice for new assignments

44

3rd choice for new assignments

45

3rd choice for new assignments

46

3rd choice for new assignments

47

3rd choice for new assignments

48

3rd choice for new assignments

56

2nd choice for new assignments

57

2nd choice for new assignments

58

2nd choice for new assignments

59

Satisfactory for continued use

60

Satisfactory for continued use

61

Satisfactory for continued use

66

1st choice for new assignments

67

1st choice for new assignments

68

1st choice for new assignments

Licensing

It is a requirement that a transmitter is licensed before use and the frequency is cleared with

JFMG Limited

72 Upper Ground

London SW1 9LT

Tel: 020 7261 3797

Fax: 020 7737 8499

Email: [email protected]

Website: www.jfmg.co.uk

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