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Icom IC-705 All mode portable radio


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Icom IC-705 All mode portable radio
Mobile Transceiver

The new portable HF/VHF/UHF IC-705 has many great features such as SDR platform, internal battery, GPS, Bluetooth and D-STAR, all in a compact and lightweight body. The Icom IC-705 uses the same 4.3 inch colour touch screen display as the best selling IC-7300 and IC-9700 featuring real-time spectrum scope and waterfall display.


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Icom IC-705 shack in a rucksack

Preliminary specifications

  • HF/50/144/430 MHz Multimode Operation

  • RF Direct Sampling System

  • Real-Time Spectrum Scope and Waterfall Display

  • Compact and Lightweight Design/li>
  • BP-272 Li-ion Battery Pack or 13.8 V DC External Power Supply

  • Maximum Output Power 5 W (BP-272), 10 W (13.8 V DC)

  • Supports Connections Using WLAN/Bluetooth® Technologies

  • GPS Functions

  • microSD Card Slot

  • Micro USB Connector

  • D-STAR Functions

  • Programmable Speaker/Microphone

  • Compact size 20cm*8cm*8.5cm weighing 1kg with battery installed

  • Optional LC-192 Backpack, Ideal for Field Operations

  • CSV file for use with CS-705 is work in progress thankks to Barry G4BUD for your help

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It’s a keeper
As a QRP enthusiast, my interest in the 705 is as a ‘shack in a box’ covering HF and V/UHF bands - in truth, a replacement for my 19 year old FT817. I have not been disappointed. The radio worked out of the box and I found I could access basic TX and RX without reading the enclosed short form manual. However, I strongly recommend that you read the manual before you try any serious operating. The radio is sturdy and the controls are firm. The touch screen is not over sensitive - I found that the best results were to be had by placing my fingers on top of the radio and using my thumb to activate the on screen buttons/boxes. This also stops the rig moving when pushing buttons. The of screen push button switches are firm and positive, use of finger nails is recommended as they are smallish and often co-located. The menu system took a little getting used to but after a couple of days use, I reached the conclusion that it had been well thought out. There are a few oddities, so read the book! Performance will be objectively assessed elsewhere, but the RX did not fall down under contest conditions. Sensitivity seems good on all bands. I found it necessary to reduce the RF gain when listening on the lower HF bands as the ambient noise at this location was strong enough to produce what I can only describe as ‘ringing’ in the CW bandwidths. The RX attenuators must be of the order of 20dB, hence using the RF gain to control the ringing. This effect was not present in wider RX bandwidths, SSB etc. Quality of received audio was excellent in both phone and CW modes. On transmit, I can say that CW full break in mode is poor. It only returns to receive in between words, not individual dots and dashes. There is also an audible T/R. It clicks gently rather than clangs and I find it acceptable. I cannot speak for data modes and digital phone operation as I do not use either.

Overall, I doubt that any purchaser will be disappointed. I question whether it will be much used by backpackers as it is rather heavier than, say, a KX2 and it does not have an onboard ATU. I’m in the process of evaluating the supplied battery’s endurance and will post a further review in due course. It took just a couple of hours to top up the battery - received with a 40 per cent charge - using the 5V charger for my iPad. The battery will, it is claimed, charge more rapidly when the rig is connected to the 13.8V supply. Oh, a final note, the onboard GPS finds satellites very rapidly, even indoors. Review by Chris. GU3TUX / (Posted on 08/10/2020)

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