Icom IC-T70A - Precautions; RF Exposure and Handling Safety

56 March 2011
Table 2
ICOM IC-T70A, serial number 05001097
Manufacturer’s Specifications Measured in ARRL Lab
Frequency coverage: Receive, 136-174, 400- Receive and transmit, as specified.
479 MHz; transmit, 144-148, 420-450 MHz.
Modes: FM, NFM. As specified.
Power requirements: 7.2 V dc (battery)
†
or Receive, battery power, 432 mA (max
10-16 V dc external supply; receive, 450 mA volume, no signal, lights on); 280 mA
(max audio, internal speaker), 300 mA (max (max vol, no signal, lights on, external
audio, external speaker), 90 mA (standby), speaker); 86 mA (standby, lights off),
40 mA (power save); transmit, VHF, 1.4 A (high), 42 mA (power save on).
1.2 A (middle), 0.6 A (low); UHF, 2.1 A (high), Transmit, battery power, VHF, 1.7 A
1.5 A (middle), 0.8 A (low). (high) 1.2 A (middle), 0.8 A, (low);
UHF, 2.4/1.7/0.8 A at 8.2 V dc (full
charge). External 13.8 V dc supply,
VHF, 1.6/1.2/0.6 A; UHF, 2.2/1.7/0.8 A.
Receiver Receiver Dynamic Testing
FM sensitivity: 12 dB SINAD, 0.18 µV. For 12 dB SINAD, 146 MHz, 0.10 µV;
162.4 MHz, 0.14 µV, 440 MHz, 0.12 µV.
FM two-tone, third-order IMD dynamic range: 20 kHz offset: 146 MHz, 70 dB*; 440 MHz,
Not specified. 69 dB*; 10 MHz offset; 146 MHz, 86 dB,
440 MHz, 78 dB.
FM two-tone, second-order IMD dynamic range: 146 MHz, 86 dB, 440 MHz, 118 dB.
Not specified.
Adjacent-channel rejection: Not specified. 20 kHz offset: 146 MHz, 70 dB,
440 MHz, 69 dB.
Spurious response: Not specified. IF rejection, 146 MHz, 92 dB; 440 MHz,
118 dB. Image rejection, 146 MHz,
88 dB; 440 MHz, >136 dB.
Squelch sensitivity: 0.18 µV. At threshold, 146 & 440 MHz, 0.38 µV,
0.11 µV (auto), 1.22 µV (max).
Audio output: >700 mW at 10% THD into 16 W 395 mW at 10% THD into 8 W (external
(internal speaker), >400 mW at 10% THD into speaker); THD at 1 V RMS, 1.5%.
8 W (external speaker).
Transmitter Transmitter Dynamic Testing
Power output: 5.0 W (high), 2.5 W (middle), Battery (8.2 V) or ext 13.8 V dc power:
0.5 W (low). VHF, 5.2/2.5/0.5 W; UHF, 4.6/2.3/0.4 W
Spurious signal and harmonic suppression: >70 dB, meets FCC requirements.
>60 dB.
Transmit-receive turnaround time (PTT release Squelch on, S9 signal, 146 MHz, 214 ms,
to 50% of full audio output): Not specified. 440 MHz, 210 ms.
Receive-transmit turnaround time (“tx delay”): 146 MHz, 196 ms; 440 MHz, 194 ms.
Not specified.
Size (height, width, depth): 4.4 × 2.3 × 1.2 inches; weight, 13.4 ounces.
Price: IC-T70A, $225. OPC-478UC USB cable, $60; CS-T70 software, $50; HS-95 headset,
$160 and OPC-2006 cable, $25.
*Measurement was noise limited at the value indicated.
BP-264 7.2 V, 1400 mAh NiMH battery and wall charger supplied. Available options:
BP-265 7.4 V, 1900 mAh Li-ion battery, $70; BC-191 drop-in rapid charger for BP-264, $70;
BC-193 drop-in rapid charger for BP-265, $70; BP-263 battery case for 6 AA cells, $30;
OPC-515L dc power cable, $20.
Bottom Line
The IC-T70A is a solid dual
band handheld transceiver that
includes a wide range of features
yet is easy to operate.
Key Measurements
Summary
2 M
70 cm
* Measurement noise limited
at value shown.
Key:
**Off Scale
PR056
250
50
T-R
210
Tx-Rx Turnaround Time (ms)
214
100 800
Snd
395
Audio Output (mW)
60
110
Img
Image Rejection (dB)
88
136**
60
110
IF
118**
IF Rejection (dB)
92
ChRej
50
90
69
Adjacent Channel Rejection (dB)
70
40
70
,

Rx
69@20 kHz*
Receiver 3rd-Order Dynamic Range (dB)
70@20 kHz*
,

Rx
78@10 MHz
90
Receiver 3rd-Order Dynamic Range (dB)
86@10 MHz
0.25
0.1
SINAD
0.12
Receiver Sensitivity (12dB SINAD, µV)
0.10