(Secondary and backup radio)
This Icom 706MKIIG was my original main radio before the 746PRO came to live with me. Now it sits on the side as a back-up radio, and second radio for monitoring 2 bands together.
As I said, this was my baby radio, and served me well for 5 years. Connected to the Icom AT-180 auto tuner, I made hundreds of contacts local and DX. I used to have a W2IHY 8-Band EQ that I ran my Heil PR-30 through to feed audio to the 706MKIIG. It never failed me once, and I always got great reports from every contact. Most of them were surprised to learn it was a little mobile.
The following info is from the Icom website.
The IC-706MKIIG carries on the '706' series tradition of base station performance and features in a mobile rig-sized package. Building on this legacy, frequency coverage is expanded to the 70 cm band and output power is increased for the 2 m band. A long list of enhancements, both to usability and performance, as well as added features and functions have produced the latest in the evolution of the '706' series.
Operating frequency range has been expanded to the 70 cm band. Of course, all mode operation (SSB, CW, RTTY, AM and FM) is possible and a full 100W of output power is available for HF and 6m operation; 50W for 2m and 20W for 70cm operation.
The two 70 watt "RD70HVF1" MOS-FET power amplifier transistors are employed at the PA unit for 100 watts of power on HF, and 6m. A third "RD70HVF1" is used for 50 watts on 2m and 20 watts on 70cm bands. And, a one piece aluminum, diecast chassis with a large cooling fan is employed. This combination provides stable, high quality output with low IMD and low spurious emissions even during full 100% duty cycle and extended operation.
Backlighting of keys and switches is a great help during nighttime operation.the intensity is even adjustable!
Tone squelch operation is available in FM mode for basic signalling and quiet standby. Tone frequencies can be set independently for tone squelch (Tx/Rx) and repeater tones, and a range of 50 frequencies is available. A tone scan function is available to search for a repeater's access tone quickly and easily.
DSP capabilities are included. These include noise reduction and auto notch functions. Superior receive quality in your shack, vehicle or during DX'peditions.
The IC-706MKIIG is very compact at 69/16(W)×29/32(H)×77/8(D) and weighs a mere 5.5 lb, making it ideal for DX'peditions, etc. A detachable front panel allows easy installation in your shack or in a wide variety of mobile applications. An optional separation cable is required.
Automatic repeater function
An automatic repeater function (Standard for USA version only) is available and repeater frequencies can be programmed via a special operation. This eliminates the need for repeater settings for 6m, 2m or 70cm repeater operation.
±0.5 ppm of high frequency stability is provided when an optional CR-282 HIGH STABILITY CRYSTAL UNIT is installed.
The individual band change key, a sub dial and quick band change capability provide simple operation. The individual band change key allows quick and easy QSY, the sub dial enhances mobile and memory operation, and the quick band change capability selects pre-set frequency bands with the last-used frequency and mode. Also, each band can store preamplifier/attenuator and tuner on/off settings.
This function sweeps ±14 steps from the displayed frequency and plots received signal strength on the function display. This function is useful not only for checking HF band conditions, but also seeking vacant frequencies during VHF or UHF FM operation.
For FM operation on the 10m or 2m bands (where narrow FM of 5KHz is required), the IC-706MKIIG has narrow FM capability that allows you to take advantage of this operating mode. The "Normal" FM position is 9.75KHz wide.
99 channels can memorize both transmit and receive frequencies separately; 6 channels are for programmed scan edges; and 2 channels are for call memory for the 2m and 70cm bands. And, up to 9-character alphanumeric names can be programmed into each memory channel.
Receive: 0.030 - 199.999MHz & 400 - 470MHz
Transmit: 160M 1.800 - 1.999MHz
80M 3.500 - 3.999MHz
40M 7.000 - 7.300MHz
30M 10.100 - 10.150MHz
20M 14.000 - 14.350MHz
17M 18.068 - 18.168MHz
15M 21.000 - 21.450MHz
12M 24.890 - 24.990MHz
10M 28.000 - 28.700MHz
6M 50.000 - 54.000MHz
2M 144.000 - 148.000MHz
70cm 430.000 - 450.000MHz
Transmit with Mars/Cap Mod: 0.030 - 199.99MHz and 400.000 - 470.000MHz
Modes: USB, LSB, CW, RTTY (FSK), AM, FM, & (WFM inRx only)
Memory Channels: 107 (99 regular, 6scan edges, & 2 call channels.
Antenna Connectors: SO-239 x 2 (For HF/50MHz and 144/430MHz) 50Ω
Frequency Stability: Less than + 7ppm from 1 min. to 60 min. after power on. After that
rate of stability less than + 1 ppm/hr. at +25°C (+77°F). Temp
fluctuations 0°C to +50°C (+32°F to +122°F) less than ±5 ppm.
Current Drain: TX Max. 20 Amps
RX Standby 1.8 Amps
RX Max Audio 2.0 Amps
Temperature Range: 14°F to 140°F (-10°C to 60°C)
Dimensions (No Projections): 69/16(W) X 29/32(H) X 77/8(D) inches
167(W) X 58(H) X 200(D) mm
Weight: 5lb. 6oz (2.45 kg)
CI-V Connector: 2 conductor, 1/8" (3.5 (d) mm)
ACC Connector: 13 Pin
Output Power: Band SSB/CW/RTTY/FM AM
HF/50MHz 5 - 100 Watts 2 - 40 Watts
144MHz 2.5 - 50 Watts 2 - 20 Watts
440MHz 2 - 20 Watts 2 - 8 Watts
SSB Balanced modulation
AM Low level modulation
FM Variable reactance modulation
Below 47.5MHz Less than -60 dB
47.5 - 50MHz -50 to -60 dB
Above 50MHz -60 dB
Carrier Suppression: More than 40 dB
Unwanted Sideband: More than 50 dB
MIC: 8 pin modular jack (600Ω)
KEY: 3 conductor 1⁄4 inch (6.35 (d) mm)
RTTY: 3 conductor 1⁄8 inch (3.5 (d) mm)
SSB/CW/AM/WFM Double Superheterodyne
FM Triple Superheterodyne
Intermediate Frequencies (In MHz) (* denotes FM only)
MODE 1st 2nd 3rd
SSB/AM-N/FM 69.0115 9.0115 0.455*
CW 69.0106 9.0106 -----
RTTY 69.0105 9.0105 -----
AM/FM-N 69.0100 9.0100 0.455*
WFM 70.7000 10.7000 -----
Receive Sensitivity (Preamp on):
Frequency SSB/CW AM FM WFM
Range 10dB 10dB 12dB 12dB
S/N S/N SINAD SINAD
0.5 - 1.8 MHz -- 13µV -- --
1.8 - 28 MHz 0.15µV 2.0µV 0.5µV --
28 - 29.7MHz 0.15µV 2.0µV 0.5µV --
50MHz Band 0.12µV 1.0µV 0.25µV --
76 - 108 MHz --- --- --- 10.0µV
144/440 Bands 0.11µV 1.0µV 0.18µV --
Squelch Sensitivity Threshold: (Preamp On):
SSB Less than 5.6 µV
FM Less than 0.3 µV
SSB/CW/RTTY More than 2.4KHz/ -6dB
Less than 4.8KHz/ -60dB
AM/FM-N More than 8.0KHz/ -6dB
Less than 30KHz/ -36dB
FM More than 12KHz/ -6dB
Less than 30KHz/ -60dB
Spurious and Image Rejection Ratio:
HF Bands More than 70dB
50MHz More than 65dB (Except IF through)
144 & 440MHz More than 65dB
Audio output power: More than 2 watts at 13.8VDC
RIT Variable Range: +/- 9.99 KHz
Phones connector: 3 conductor 1/8 inch jack (3.5mm) at 8Ω
Ext. Speaker Jack: 2 conductor 1/8 inch jack (3.5mm) at 8Ω
The IC-706MKIIG meets MIL-STD requirements and strict environmental standards for shock (MIL 810C, D, E), vibration (MIL 810C, D, E), and bandwidth requirements (MIL 810B).