Multi Channel Transmitter (MCTX) - Installation,
Commissioning and Maintenance
Page 15 of 16
Appendix i
Coax C able Losses
Cab le
Impedance
Loss per M etre
@ 100 MHz
@ 1000 MHz
RG 58
50 ohms
0.21 dB
0.76 dB
RG 223
50 ohms
0.14 dB
0.29 dB
UR M43
50 ohms
0.13 dB
0.46 dB
UR M67
50 ohms
0.07 dB
0.25 dB
UR M70
75 ohms
0.15 dB
0.52 dB
UR M76
50 ohms
0.16 dB
0.53 dB
CT100
75 ohms
0.06 dB
0.20 dB
App endix ii
RF absorp tion at 10 00 M Hz o f comm on building m aterials
Single bric k wa ll (225 m m - 9")
Half brick wall (11 0 mm - 4.5")
Breeze block wall 225 mm
Breeze block wall 110 mm
Plasterboard partition (doub le layer)
Chipbo ard partition (double layer)
Window (4 mm glass)
Window (4 mm polycarbonate)
App endix iii
Extract from:
ETSI EN 301 357 Technical characteristics and test methods for analogue cordless wideband
audio in the 86 3 M Hz to 8 65 M Hz frequ ency range
Section 8
Metho ds of measurem ent and limits for transmitter parameters
8.1.3
Frequ ency error - lim it
±40 KHz
8.2.3
Carrier p owe r - limit
10 mW (+10 dBm)
8.3.3
Ban dwid th - limit
±150kHz @ -46 dBc
8.3.4
Edge o f band lim its
At no time shall any part of the o ccup ied ban dwid th mas k abo ve the -4 6 dB c poin t fall outside
the edges of the band 863 M Hz to 865 M Hz.
8.5.3
Tran smitter sh ut off
The carrier output power shall be reduced by at least 30 dB in less than 5 minutes after the
modulation is removed.