# The Wireless Telegraphy (Control of Interference from Radio-Frequency Heating Apparatus) Regulations 1971, Schedule 1


The limits of field strength and terminal voltage shall be as follows:
Col. 1
Col. 2
Col. 3
Col. 4
Col. 5
Frequency Range in MHz
Maximum radiated field strength in microvolts per metre
Maximum terminal voltage in microvolts per metre
For protection of safety of life services
Exceeding
Not Exceeding
Maximum radiated field strength in microvolts per metre
Maximum terminal voltage in microvolts
13·533
13·553
300,000
5,000,000
13·553
13·567
unlimited
unlimited
13·567
13·587
300,000
5,000,000
26·957
27·283
unlimited
unlimited
83·996
84·004
3,000,000
167·992
168·008
3,000,000
886
906
1,000,000
For all other frequencies in the ranges specified below, the limits of field strength and terminal voltage shall be as follows:
Col. 1
Col. 2
Col. 3
Col. 4
Col. 5
0·15
0·2
50
3,000
15
1,000
0·2
0·285
50
2,000
15
650
0·285
0·49
250
2,000
80
650
0·49
0·5
50
2,000
15
650
0·5
1·605
50
1,000
15
350
1·605
3·95
250
1,000
80
350
3·95
30·00
50
1,000
15
350
30·00
470·00
30
10
470·00
1,000·00
100
35

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Source: https://www.legislation.gov.uk/uksi/1971/1675/schedule/1 (the official version)
Page: https://openlegislation.uk/wireless-telegraphy-control-of-interference-from-radio-frequency-heating-apparatus-regulations-1971/schedule-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.