The system was developed in the late s by the Japan Amateur Radio League and uses minimum-shift keying in its packet -based standard. There are other digital modes that have been adapted for use by amateurs, but D-STAR was the first that was designed specifically for amateur radio. Several advantages of using digital voice modes are that it uses less bandwidth than older analog voice modes such as amplitude modulation and frequency modulation. The quality of the data received is also better than an analog signal at the same signal strength , as long as the signal is above a minimum threshold and as long as there is no multipath propagation.
amateur radio REPEATERs
D-Star Digital Amateur Radio (Ham) - Icom UK
There seems to be a problem serving the request at this time. Icom transceivers are made for many applications including boating and aviation. You can find a selection of large and small Icom transceivers that work with most ham bands across high and low frequencies on eBay. Icom makes several models that are suitable for an amateur.
Icom Mobile Amateur (Ham) Transceiver Radio
This repeater looks as good as it performs. A rugged heatsink, large cooling fans and a high performance power module provide the repeater with a stable 50W at full duty cycle operation. A built-in backup system supports automatic switching to an external power supply This feature allows you to share a channel with multiple user groups. Ideal for many different applications.
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