A-46 624074/07
A Specifications
Table A-16. Recommended separation distances between portable
and mobile RF communications equipment and the HAMILTON-G5
ventilator
1
Rated maximum
output power
of transmitter
(W)
Separation distance according to frequency of transmitter
(m)
2345
Conducted Radiated
150 kHz to
80 MHz
outside ISM
bands
d = 0.35 √P
150 kHz to
80 MHz
in ISM
bands
d = 1.2 √P
80 MHz to
800 MHz
d = 1.2 √P
800 MHz to
2.5 GHz
d = 2.3 √P
0.01 0.035 0.12 0.12 0.23
0.1 0.11 0.38 0.38 0.73
1 0.35 1.2 1.2 2.3
10 1.1 3.8 3.8 7.3
100 3.5 12 12 23
1. These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects, and people.
2. For transmitters rated at a maximum output power not listed above, the recommended sep-
aration distance d in meters (m) can be determined using the equation applicable to the fre-
quency of the transmitter, where P is the maximum output power rating of the transmitter
in watts (W) according to the transmitter manufacturer.
3. At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
4. The ISM (industrial, scientific and medical) bands between 150 kHz and 80 MHz are
6.765 MHz to 6.795 MHz; 13.553 MHz to 13.567 MHz; 26.957 MHz to 27.283 MHz;
and 40.66 MHz to 40.70 MHz.
5. An additional factor of 10/3 is used in calculating the recommended separation distance
for transmitters in the ISM frequency bands between 150 kHz and 80 MHz and in the
frequency range 80 MHz to 2.5 GHz to decrease the likelihood that mobile/portable com-
munications equipment could cause interference if it is inadvertently brought into patient
areas.
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