While the use of D-Star appears to be stable or slightly declining, DMR-based radios are becoming increasingly popular. Most DMR Tier 2 radios sold are made by either Hytera or by Motorola. Apart from sending text messages, both brands are largely compatible. The Tier 2 standard offers two time slots.
DMR Tier 1 (no time slots, FDMA) is another system, generally much cheaper, but all radios available to date are mono band. It didn’t come as a surprise that there was a lot of interest in the Yaesu FTM-400DR, the model which replaces the analog FTM-350. Contrary to the Chinese offerings this Yaesu is dual band, and does 50 Watts on both bands. There are four modes available.
V/D mode is Voice and Data communication in the same time frame. Stable and reliable digital voice and data communications are maintained by using extraordinarily strong error correction capabilities. This mode will be the basic mode of C4FM FDMA Digital HAM radio.
Voice FR mode uses the full rate of data capacity for voice. This mode enables you to transfer clear, high quality voice data.
Showing posts with label Yaesu FTM-400DR Review. Show all posts
Showing posts with label Yaesu FTM-400DR Review. Show all posts
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