tag:blogger.com,1999:blog-4285772840612795886.post1614232234879289328..comments2023-07-03T09:14:25.027-04:00Comments on N9XLC: V689U Chinese Digital RadioUnknownnoreply@blogger.comBlogger2125tag:blogger.com,1999:blog-4285772840612795886.post-88425863233615786782013-10-31T21:51:33.277-04:002013-10-31T21:51:33.277-04:00Most of these Chinese use a SB3500 and AMBE3000R b...Most of these Chinese use a SB3500 and AMBE3000R based reference design that has been floating around China for a while.<br />The AMBE3000R is Rom Based version of the AMBE3000F ( Flashed based )<br />Yes they are software upgradeable but that's for the onboard Microcontroller not the vocoder<br />so in other words No codec 2 on these radio's <br /><br />The radios I have tested so far are all Tier 2 , Tier 1 is pretty useless it's license free 446Mhz for Europe<br />so far I am impressed better Voice quality and cheaper than a ID-31A<br />once people start playing with them and there is some ham accessible development platforms for DMR <br />( which is just a matter of time ) some very interesting things will happen<br /> <br /><br /> <br /><br /> VE2GZI and Companyhttps://www.blogger.com/profile/16474896348815413856noreply@blogger.comtag:blogger.com,1999:blog-4285772840612795886.post-77198843610105672462013-03-18T04:45:11.178-04:002013-03-18T04:45:11.178-04:00In the mean time I did get some answers, but there...In the mean time I did get some answers, but there are still a few mysteries to solve.<br /><br />So far it seems that these radios use DMR tier 1. I will try to get some samples for a review.<br /><br />Hans / PD0ACAnonymousnoreply@blogger.com