11/98 IPN: 449-51000-01
Radio specifications and circuit descriptions B - 5
Table B-3: Transmitter performance
Power output
136-174 MHz
174-530 MHz
1 W (low)
2.5 W (medium)
5 W (high)
1 W (low)
2.5 W (medium)
4 W (high)
Duty cycle
20%
(1 minute Tx, 4 minutes Rx at max-
imum temperature and voltage)
Spurious emissions
to 1 GHz
1 to 4 GHz
(136-470 MHz)
1 to 12.75 GHz
(470-870 MHz)
-36 dBm (conducted and
radiated)
-30 dBm (conducted and
radiated)
-30 dBm (conducted only)
Adjacent channel
narrowband
mediumband
wideband
60 dBc
70 dBc
70 dBc
Group delay variation
bandwidth
±50 µs (at mod audio output)
300-3000 Hz
Modulation type
direct FM
Deviation limiting
narrowband
mediumband
wideband
±5 kHz (adjustable up to)
±2.5 kHz
±4.0 kHz
±5.0 kHz
Trunking data deviation
(as per MPT1327)
narrowband
mediumband
wideband
1.5 kHz
2.4 kHz
3 kHz
FM hum and noise
narrowband
wideband
40 dB
45 dB
Audio response
below limiting
in limiting
above 3 kHz
input for 60%
deviation
distortion
6 dB/oct +1, -3 dB
(cf 1 kHz)
300-3000 Hz
0 dB +0, -4 dB
(cf maximum system deviation)
450-2550 Hz
-35 dB/oct min
5 mV
rms
<5% at 1 kHz
Ruggedness
2 minutes (into infinite SWR)
Stability
5:1 SWR (all phase angles,
<-60 dBc)
Summary of Contents for Orca series
Page 1: ...Tait Orca Handportable Radios Service Manual December 1998 IPN 449 51000 01 ...
Page 8: ...A 2 Introduction 11 98 IPN 449 51000 01 ...
Page 16: ...A 10 Introduction 11 98 IPN 449 51000 01 ...
Page 18: ...B 2 Radio specifications and circuit descriptions 11 98 IPN 449 51000 01 ...
Page 26: ...C 2 Diagnostics and fault finding 11 98 IPN 449 51000 01 ...
Page 58: ...D 20 Servicing the radio 11 98 IPN 449 51000 01 ...
Page 60: ...E 2 Battery packs and chargers 11 98 IPN 449 51000 01 ...
Page 74: ...F 2 Interfacing non Tait accessories 11 98 IPN 449 51000 01 ...
Page 82: ...F 10 Interfacing non Tait accessories 11 98 IPN 449 51000 01 ...
Page 84: ...G 2 Additional information 11 98 IPN 449 51000 01 ...
