Specifications

Reprinted from October 2011 QST © ARRL
Table 1
ICOM IC-7410, serial number 02001081
operator in the driver’s seat. The knob has a
substantial, easy-to-grip, rubberized outer
ring plus the now customary tuning dimple,
and I preferred it to the PROIII’s main tun-
ing knob. It’s possible to manually adjust the
tuning dial tension with a slider beneath the
knob — no screwdriver needed! ICOM fol-
lowed through elsewhere on the front panel
with larger knobs that offer a more positive
sense of control. Even the inner concentric
controls are easy to maneuver.
The front panel’s bold lettering contrasts
nicely with the dark, smooth (easy-to-clean)
finish, making legends easy to read. This is
a welcome improvement from earlier ICOM
designs, which sometimes sacrificed utility at
the altar of style. I especially appreciated the
conspicuous round XFC and TS buttons, which
are much easier to access than on the PROIII.
(Press XFC to listen to your transmit frequency
when split; TS changes the tuning step.)
The four “stem” controls on the front
panel’s lower lip are shorter and sturdier
than on earlier ICOM models, although it
can be a bit difficult to discern the unpainted
pointers on these shafts. The stem controls’
legends are above the shafts and much easier
to read than the ones on the PROIII. These
make available adjustments for (L–R) KEY
SPEED, BK-IN DELAY, COMP and MONI
GAIN. I appreciated not having to dig to adjust
the keyer speed.
None of the front panel buttons on the IC-
7410 are illuminated (for example, to indicate
that a given function is enabled). I missed this.
You must rely instead on smallish text legends
along the lower portion of the main display
(below the frequency readout) to determine
if a function is enabled. That display can get
pretty busy once you’ve switched on a few
things. This forces the operator to pay pretty
close attention. I found it extremely easy to
neglect to disable the NOTCH feature, for
example, after having used it earlier.
The menu system on the IC-7410 hear-
kens back to the system ICOM introduced
with its revolutionary IC-706 series in the
mid 1990s. IC-706 and ’746 users will feel
nearly immediately at home with this in-
terface, although it is easier to use than the
initial incarnation. In fact, the radio itself is a
bit of an amalgamation of the PRO and ’706
series — not that there’s anything wrong with
that — and some of its finest features remain
hidden until you need them. The menu text
consists of light, segmented characters.
These are serviceable but not always easy to
decipher. I found the similar menus on the
IC-706 series more readable.
There are actually three menus, all acces-
sible via the front-panel MENU button: Press
it quickly, and the M1 and M2 menus allow
selecting a few common parameters using the
F-1 through F-5 keys. These F key selections
are mode dependent. For example, in SSB
mode M1 has a TBW (transmit bandwidth)
Manufacturer’s Specifications Measured in the ARRL Lab
Frequency coverage: Receive, 0.03-60 MHz; Receive and transmit, as specified.
transmit, 1.8-2.0, 3.5-4, 5.33200, 5.34800,
5.35850, 5.37300, 5.40500, 7-7.3, 10.1-10.15,
14-14.35, 18.068-18.168, 21-21.45,
24.89-24.99, 28-29.7, 50-54 MHz.
Power requirement: 13.8 V dc ±15%; 13.8 V dc; receive 1.9 A (no signal, max
receive, 3 A (max audio); transmit, 23 A audio), 1.7 A (backlight off);
(100 W out). transmit, 18 A (100 W out). Operation
confirmed at 11.4 V dc (89 W output).
Modes of operation: SSB, CW, AM, FM, RTTY. As specified.
Receiver Receiver Dynamic Testing
SSB/CW sensitivity: 2.4 kHz bandwidth, Noise Floor (MDS), 500 Hz DSP filter,
10 dB S/N: 0.1-29.99 MHz, 0.16 µV; 3 kHz roofing filter:
50-54 MHz, 0.13 µV. Preamp off 1 2
0.137 MHz –129 –135 –136 dBm
0.505 MHz –134 –141 –142 dBm
1.0 MHz –134 –141 –142 dBm
3.5 MHz –135 –142 –144 dBm
14 MHz –134 –141 –143 dBm
50 MHz –131 –140 –142 dBm
Noise figure: Not specified. 14 MHz, preamp off/1/2: 13/6/4 dB
AM sensitivity: 6 kHz bandwidth, 10 dB S/N: 10 dB (S+N)/N, 1-kHz, 30% modulation,
0.1-1.799 MHz, 12.6 µV; 1.8-30 MHz, 2 µV; 6 kHz bandwidth:
50-54 MHz, 1.6 µV. Preamp off 1 2
1.0 MHz 1.27 0.56 0.51 µV
3.8 MHz 1.15 0.49 0.43 µV
50.4 MHz 1.84 0.68 0.57 µV
FM sensitivity: 15 kHz bandwidth, 12 dB SINAD: For 12 dB SINAD, 3 kHz deviation,
28-29.7 MHz, 0.5 µV; 50-54 MHz, 0.32 µV. 15 kHz bandwidth:
Preamp off 1 2
29 MHz 0.54 0.21 0.18 µV
52 MHz 0.56 0.25 0.20 µV
Spectral display sensitivity: Not specified. Preamp off/1/2: –94/–101/–109 dBm.
Blocking gain compression: Not specified. Gain compression, 500 Hz bandwidth,
3 kHz roofing filter:
20 kHz offset 5/2 kHz offset
Preamp off/1/2 Preamp off
3.5 MHz 144/138/136 dB 118*/111* dB
14 MHz 143/140/135 dB 117*/111* dB
50 MHz 139/139/134 dB 117/111 dB
Reciprocal mixing (500 Hz BW): Not specified. 20/5/2 kHz offset: –101/–88/–78 dBc.
ARRL Lab Two-Tone IMD Testing (500 Hz DSP bandwidth, 3 kHz roofing filter)**
Measured Measured Calculated
Band/Preamp Spacing Input Level IMD Level IMD DR IP3
3.5 MHz/Off 20 kHz –28 dBm –135 dBm 107 dB +26 dBm
–14 dBm –97 dBm +28 dBm
14 MHz/Off 20 kHz –28 dBm –134 dBm 106 dB +25 dBm
–13 dBm –97 dBm +29 dBm
0 dBm –64 dBm +32 dBm
14 MHz/1 20 kHz –34 dBm –141 dBm 107 dB +20 dBm
–20 dBm –97 dBm +19 dBm
14 MHz/2 20 kHz –40 dBm –143 dBm 103 dB +12 dBm
–27 dBm –97 dBm +8 dBm
14 MHz/Off 5 kHz –36 dBm –134 dBm 98 dB +13 dBm
–24 dBm –97 dBm +13 dBm
0 dBm –28 dBm +14 dBm
14 MHz/Off 2 kHz –46 dBm –134 dBm 88 dB –2 dBm
–97 dBm –29 dBm +5 dBm
0 dBm –23 dBm +12 dBm
50 MHz/Off 20 kHz –23 dBm –131 dBm 108 dB +31 dBm
–12 dBm –97 dBm +31 dBm