Showing posts with label Hytera. Show all posts
Showing posts with label Hytera. Show all posts

Wednesday, August 29, 2018


Insert shocked face that anything like this could happen.

Wednesday, May 31, 2017

Hytera's One Device to Rule Them all

Via @travisgoodspeed

Saturday, June 4, 2016

Monday, May 23, 2016

Hytera RD965 - Tactical DMR Repeater Project

Hytera RD965 - Tactical DMR Repeater Project:
In testing UHF DMR in simplex mode, I found on typical terrain or on road convoys, the DMR radios gave us approx 2-3x the distance and had many fewer coverage holes in a given set of terrain. Another anecdote, from the basement of my house in Fort Collins, I can hit the Boulder area DMR-MARC repeater, using a HT, in DMR mode. This is pretty amazing considering the distance and stuff in the way. On analog UHF, I am lucky to hit the local Fort Collins (Horsetooth) repeater from the exact same position.

Only problem, the DMR repeaters Kent deals with are fixed position enterprise-level units, and the "manpack" repeaters he builds are typically built around ultra low power VHF/UHF. So I did a bunch of research online and found the Hytera RD965 repeater. It's small, a little larger than an old Hayes Courier HST modem. The downside compared to the other manpack repeaters was going to be its power requirements. I said that I didn't mind if we needed to have more batteries or solar panels, so we just went ahead with the project.

The idea is that we ID the best mountain-top position for the repeater to give maximal coverage of the event area, drive/hike it up there, and then leave it there for about to two weeks, until we're done with the site. The repeater is to run autonomously during that time.
Click the link for the full details (including pics) of the solution.

Monday, February 9, 2015

Hytera TC-320: Mini-Review

David (K7DB) likes the Hytera TC-320:
"On 1/29/2015 you blogged about a TDXOne TD-Q7 UHF radio. 
For some time I've been using another small UHF radio that has delivered flawless performance and is put together very well. It's a Hytera TC-320. (Yep, the same Hytera that makes the DMR radios.) It's FCC Part 90 certificated. 
I purchased it from a U.S. dealer for $92 delivered, and I think it might even be available cheaper (and also quite a bit more expensive -- so shop around). Programming s/w is available from your dealer for free. A special version of software is needed to program 5 kHz deviation -- that can also be provided free by the dealer. 
The dealer actually has a bunch of these radios that he rents out... so you can imagine how much wear and tear they might get being used for short-term events where the users probably couldn't care less about taking care of the radios. In fact, the manufacturer specs claim it will survive a 1.5 meter (about 5 foot) drop, and there is a U.S. warranty and repair facility in Florida. 
These are 16 channel 2-watt radios, so they might not meet everyone's needs... but they are extremely rugged and reliable, and I'm happy with mine. Comes with 1700 mAh battery. Draws about 34 mA on squelched receive, 1000 mA on 2 W transmit, about 500 mA on 0.5 W transmit, and typically 170 to 280 mA on receive (depending on volume). 
The radio has a neat feature (although in practice a use for it won't come up so often for amateurs) where many groups, each with its own subaudible tone, can share a small number of channels. The radio will scan for traffic with the group's tone, and on transmit -- if no channel is being used with that tone -- will go to an unused channel. In essence, this is a simple trunking system. I think this feature would be useful for a commercial community repeater service with lots of groups and a few repeaters. 
Since this is a commercial radio, most dealers include programming in their quoted price. For amateurs, it's best to tell the dealer he can skip the programming, and ask him to throw in a programming cable instead."

Sunday, December 7, 2014

Hytera PD368


Sunday, March 24, 2013

Not Cheap Chinese Radios

If you get tired of the inexpensive Chinese radios, you could always try something like this.