Icom IC-T70A Product Review page 3

Key Measurements
Summary
0.25
SINAD
Receiver Sensitivity (12dB SINAD, µV)
78@10 MHz
Rx
Receiver 3rd-Order Dynamic Range (dB)
69@20 kHz
40
Rx
Receiver 3rd-Order Dynamic Range (dB)
70
69
50
ChRej
Adjacent Channel Rejection (dB)
92
60
IF
IF Rejection (dB)
88
60
Img
Image Rejection (dB)
395
100
Snd
Audio Output (mW)
214
210
T-R
250
Tx-Rx Turnaround Time (ms)
PR056
Key:
**
Off Scale
*
Measurement noise limited
at value shown.
Bottom Line
The IC-T70A is a solid dual
band handheld transceiver that
includes a wide range of features
yet is easy to operate.
56 March 2011
Table 2
ICOM IC-T70A, serial number 05001097
Manufacturer's Specifications
0.10
Frequency coverage: Receive, 136-174, 400-
479 MHz; transmit, 144-148, 420-450 MHz.
Modes: FM, NFM.
0.12
0.1
Power requirements: 7.2 V dc (battery)
10-16 V dc external supply; receive, 450 mA
86@10 MHz
(max audio, internal speaker), 300 mA (max
audio, external speaker), 90 mA (standby),
40 mA (power save); transmit, VHF, 1.4 A (high),
1.2 A (middle), 0.6 A (low); UHF, 2.1 A (high),
90
1.5 A (middle), 0.8 A (low).
70@20 kHz
*
Receiver
*
70
FM sensitivity: 12 dB SINAD, 0.18 µV.
FM two-tone, third-order IMD dynamic range:
Not specified.
FM two-tone, second-order IMD dynamic range:
90
Not specified.
Adjacent-channel rejection: Not specified.
Spurious response: Not specified.
118**
110
Squelch sensitivity: 0.18 µV.
Audio output: >700 mW at 10% THD into 16 W
136**
110
(internal speaker), >400 mW at 10% THD into
8 W (external speaker).
Transmitter
Power output: 5.0 W (high), 2.5 W (middle),
800
0.5 W (low).
Spurious signal and harmonic suppression:
>60 dB.
Transmit-receive turnaround time (PTT release
to 50% of full audio output): Not specified.
50
Receive-transmit turnaround time ("tx delay"):
Not specified.
2 M
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,
70 cm
$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.
Measured in ARRL Lab
Receive and transmit, as specified.
As specified.
†
or Receive, battery power, 432 mA (max
volume, no signal, lights on); 280 mA
(max vol, no signal, lights on, external
speaker); 86 mA (standby, lights off),
42 mA (power save on).
Transmit, battery power, VHF, 1.7 A
(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 Dynamic Testing
For 12 dB SINAD, 146 MHz, 0.10 µV;
162.4 MHz, 0.14 µV, 440 MHz, 0.12 µV.
20 kHz offset: 146 MHz, 70 dB*; 440 MHz,
69 dB*; 10 MHz offset; 146 MHz, 86 dB,
440 MHz, 78 dB.
146 MHz, 86 dB, 440 MHz, 118 dB.
20 kHz offset: 146 MHz, 70 dB,
440 MHz, 69 dB.
IF rejection, 146 MHz, 92 dB; 440 MHz,
118 dB. Image rejection, 146 MHz,
88 dB; 440 MHz, >136 dB.
At threshold, 146 & 440 MHz, 0.38 µV,
0.11 µV (auto), 1.22 µV (max).
395 mW at 10% THD into 8 W (external
speaker); THD at 1 V RMS, 1.5%.
Transmitter Dynamic Testing
Battery (8.2 V) or ext 13.8 V dc power:
VHF, 5.2/2.5/0.5 W; UHF, 4.6/2.3/0.4 W
>70 dB, meets FCC requirements.
Squelch on, S9 signal, 146 MHz, 214 ms,
440 MHz, 210 ms.
146 MHz, 196 ms; 440 MHz, 194 ms.