Icom Radio



This is the only ICOM HF radio I have ever owned or used and originally it was purchased for permanent fixture in my Volkswagen Camper, a T25, with the Radio and its matching ATU the AT180, fitted beneath the passenger seat with the transceiver’s head unit dash mounted courtesy of the separation kits lead. The Microphone still plugs into the transceiver unit and I had been using a mobile HEIL unit with PTT switch in the lead, worked well but not has developed a pronounced buzz on transmit any ideas folks? There is no buzz with the original hand microphone so it is definitely a problem with the HEIL.

As it covers the whole of the HF Spectrum plus 6M, 2M, and 70CM it is an ideal unit for mobile work due to its compact size, good receiver and clear transmitted audio.

The DSP works and the IF shift is very good indeed.

When mobile and using either Pro Am whips or Hustler whips the performance was very good indeed and was very useful during a two week trip into Europe some years back keeping me sane when camped up in Germany or Belgium when everyone else wanted to get drink the Country dry I operated from the van using the second heavy duty battery which was charged via a split charging unit between it and the main Van battery, flawless.

For the CW enthusiast the 706 has an in-built electronic keyer although I have not used the rig for CW and cannot comment other than comment that the received CW sounds very good indeed and there is plenty of control over the way it sounds.

Over last weekend I used the radio in earnest during the 10m ARRL contest connected to the Sigma Mantova and running barefoot power the results speak very well of the radio. Yes, I prefer my TS870SAT and TS950SD but they are completely different animals. It compares quite favourably to the TS480SAT but the Kenwood has the edge of the received audio and perhaps this is due to the DSP, much better that the FT857 which has much worse received audio and, about even with the FT100.

I will give the radio a     9 / 10 score as the only thing I find annoying is the received audio tone, other than that it is very good indeed.

This radio was replaced by the IC7000 which had a colour screen and is no longer a current listed model. Mine was one of the last years production and was bought in 2007.

  • 107 memory channels with alphanumeric name capability.
  • Up to 3 selectable passband widths
  • Built in electronic keyer
  • CW reverse function
  • Adjustable CW pitch
  • Continuous adjustable RF output
  • VOX
  • AF speech compressor
  • RF gain control
  • Adjustable SSB carrier point
  • 4 scan types
  • Noise blanker
  • Receiver protection circuit
  • RIT
  • Selectable AGC time constant
  • Optional voice synthesiser
  • CI-V capability
    Digital, multi-function S/RF meter
  • 167 (w) x 58(H) x 200 (D) mm
  • 2.45 kg



Type: Amateur HF/VHF/UHF transceiver
Frequency range: TX: 10-160 m + WARC / 6 m / 2 m / 70 cm (and 70 MHz in Europe)
RX: 0.03-200 / 400-470 MHz
RF Power output: FM/SSB/CW/RTTY: 2-100 / 2-100 / 2-50 / 1-35 W / (2-50 W on 70 MHz)
AM: 1-40 W (HF)
Receiver system: Double conversion superheterodyne (WFM)
1st IF: 134.732 MHz
2nd IF: 10.7 MHz
Triple conversion superheterodyne (AM/FM/SSB/CW/RTTY)
1st IF: 124.487 MHz
2nd IF: 455 KHz
3rd IF: 36 KHz
Sensitivity: AM (10 dB S/N)
0.5-1.8 MHz: 13 uV
1.8-29.9 MHz: 2 uV
50-54 MHz: 1 uV
144/440 MHz: 1 uV
FM (12 dB SINAD)
28-29.9 MHz: 0.5 uV
50-54 MHz: 0.25 uV
144/440 MHz: 0.18 uV
76-108 MHz: 10 uV
1.8-29.9 MHz: 0.16 uV
50-54 MHz: 0.13 uV
144/440 MHz: 0.11 uV
DV (D-Star)
28-29.7 MHz: 1 uV
50-54 MHz: 0.63 uV
144/440 MHz: 0.35 uV
Selectivity: AM (BW=6 KHz)
6 KHz (-6 dB), 15 KHz (-60 dB)
FM (BW=15 KHz)
12 KHz (-6 dB), 20 KHz (-60 dB)
SSB (BW=2.4 KHz, sharp)
2.4 KHz (-6 dB), 3.6 KHz (-60 dB)
CW (BW=500 Hz, sharp)
500 Hz (-6 dB), 900 Hz (-60 dB)
RTTY (BW=350 Hz)
360 Hz (-6 dB), 650 Hz (-60 dB)
Image rejection: HF: 70 dB
6 m/2 m/70 cm: 65 dB
Voltage: 13.8 VDC +/-15%
Current drain: RX: 1.2-1.5 A
TX: Max 22 A
Impedance: 50 ohms, 2*SO-239
Dimensions (W*H*D): RF unit: 167*58*225 mm
Controller: 165*64*78 mm
Weight: RF unit: 2.3 Kg
Controller: 500 gr
Manufactured: Japan, 2012-201x
Other: D-Star built-in. Dot-matrix touch-screen controller. 495+10 memoriers. IF-DSP
Voice recorder. SD memory card slot. USB audio in/out. Remote control
Built-in SWR meter
New price 2014 in Sweden: 14950:- SEK
Related documents: Pre-release info (725 KB)
Suction cup mounting base
IP remote control software


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