Icom IC-F4TR Service Manual - Section 1
All stated specifications are subject to change without notice or obligation.
‘
‘ GENERAL
Frequency coverage
: 450.000–490.000 MHz
Type of emission
: 16K0F3E (25 kHz)
11K0F3E (12.5 kHz)
Antenna impedance
: 50
Ω nominal
Power supply requirement
: 9.6 V DC (negative ground; supplied battery pack)
Current drain at 9.6 V DC (approx.)
: Transmit
1.4 A (at 4 W)
700 mA (at 1W)
Receive
280 mA (max. audio)
110 mA (stan-by)
Frequency error
: ±2.5 ppm
Usable temperature range
: –30˚C to +60˚C; +22˚F to +140˚F
Dimensions (proj. not included)
: 57(W)
×
140(H)
×
37(D) mm; 2
1
⁄
4
(W)
×
5
1
⁄
2
(H)
×
1
15
⁄
32
(D) inch
Weight (BP-196)
: 390 g; 13.8 oz
‘
‘ TRANSMITTER
Output power
: High 4 W
Low 1 W
Modulation system
: Variable reactance frequency modulation
Max. frequency deviation
: ±5.0 kHz (25 kHz)
±2.5 kHz (12.5 kHz)
Spurious emissions
: 70 dB typical
Adjacent channel power
: 75 dB typical (25 kHz)
70 dB typical (12.5 kHz)
Transmitter audio distortion
: Less than 5 % at 1 kHz, 60 % deviation
Residual modulation
: 40 dB (25 kHz)
34 dB (12.5 kHz)
Limitting charact of modulator
: 60–100 % of max.deviation
Ext. microphone connector
: 3-conductor 2.5(d) mm (
1
⁄
10
")/2 k
Ω
‘
‘ RECEIVER
Receive system
: Double-conversion superheterodyne system
Intermediate frequencies
: 1st IF 47.250 MHz, 2nd IF 450 kHz
Sensitivity
: 0.3 µV at 12 dB SINAD
Squelch sencitivity (at threshold)
: 0.3 µV typical
Adjcent channel selectivity
: 70 dB typical (25 kHz)
65 dB typical (12.5 kHz)
Spurious response
: 70 dB typical
Inter moduration rejection ratio
: 75 dB typical
Hum and noise
: 48 dB typical (25 kHz)
34 dB typical (12.5 kHz)
Audio output power (at 9.6 V DC)
: 500 mW typical at 5% distortion with an 8
Ω load
Ext. speaker connecter
: 3-conductor 3.5(d) mm (
1
⁄
8
")/8
Ω
Measurements made in accodance with EIA/TIA-603