Tuesday, February 21, 2017

Alinco releases full-TRIPLEX transceiver DJ-P300

A low-power two way radio with triplex/duplex communication features is released by Alinco.

+ Full-triplex/duplex low-power transceiver DJ-P300 - Alinco (Japanese)

Alinco DJ-P300

DJ-P300 is successor of the DJ-P25 full-duplex low-power radio.

The DJ-P300, which is only for Japan market, is first full-triplex transceiver without external repeater/controller/mixer and so on. It has IP67 and works only 2AA batteries or optional EBP-60 Lithium Ion battery pack. There are some communication mode such as full-triplex with three radios, full-duplex with two radios, simplex, full-duplex self-repeaters (the one of two), simplex with time-out penalty reduction mode, full-duplex with time-out penalty reduction mode and free channel full-duplex mode. There is no semi-duplex mode and semi-duplex self-repeater mode. With 1mW (ultra low power) mode, continuous full-triplex talk is available. Variable voice scrambler is also equipped with the DJ-P300.
DJ-P300, left side

Procedure of use of the full-triplex mode is as follows;
1) first person calls other transceiver(s). Transceiver that the first person has  is worked as a repeater / a mixer and a controller
2) second person press PTT (full-duplex mode)
3) last person press PTT (full-triplex mode)

I don't know how it works at the end of first person's talk. It might be cut talking between the second and the third when the radio that the first person has shuts down.
DJ-P300s on optional chargers

Other features is same as DJ-R200D excluding semi-duplex mode and semi-duplex self-repeater mode. The appearance is same as DJ-R200D too.

Price is about $441 without tax. The DJ-P300 is available soon within this week (by February 24th) in Japan. If you want to experience the FULL-TRIPLEX mode without any external repeaters, you have to get three DJ-P300s that cost over $1300 of total.

Tuesday, February 14, 2017

ICOM announces release date of IC-R8600

ICOM Japan has announced to start selling their new communications receiver IC-R8600 on late March in Japan.

+ New Release : IC-R8600 that widely covers 10kHz - 3GHz with digital modes - ICOM  (Japanese)


As you know, IC-R8600 is successor of the IC-R8500. The IC-R8600 covers from 10kHz to 3000MHz with D-STAR, NXDN, dPMR, P25, D-CR(AMBE+2) digital modes and some conventional analogue modes with variable band width filters. Appearance of the surface is almost same as I have seen before.

The IC-R8600 adopts FPGA + DSP and also has as follows;
- 4.3 inches color TFT LCD with touch screen
- Real-time smooth & high accuracy spectrum scope and waterfall display
- 11 selectable band pass filters for HF
- 13 selectable band pass filters for VHF / UHF
- can be controlled by PCs and so on via USB or Ethernet
- I/Q output (available soon)
- 2400 channels memory
- high speed scan ( 100ch/sec. )
- three multi functional dials
- SD card recording
- absolute value of the reception signal strength (RSSI) can be displayed
- firmware upgradable

At ICOM amateur radio festival 2016, the prototype IC-R8600 had some birdies around 2500 - 3000MHz. Those should be eliminated.
IC-R8600 prototype at ICOM amateur radio festival 2016

List price (excluding tax) of the IC-R8600 will be about $2000 (calculated value) in Japan. Optional speaker with power supply SP-39AD is sold too. Available date is late March in my country. It might be available by early Summer which might be in time the first Xenia Hamvention in the US. Hope to be coming soon.