Here is a link to all you wanted to know about Hytera. Some quick points, Hytera is the parent to HYT but NOT TYT. Hytera prides itself on being the world leader in DMR Tier II and III standards based systems. Worldwide it is only second to Motorola in the public safety market. https://en.wikipedia.org/wiki/Hytera
Hytera Model Breakdown
Hytera distinguishes its models by the use of Letters and Numbers Typically in a LL-NNN format which is explained below. X is used as a null placeholder for the model breakout.
LX: Radio Type
XL: Radio Capability
#XX: Class of equipment
6: Medium Tier, Feature Limited
9: High Tier – Feature Rich
X#X: Interface Type
2: Power Switch, Programming Software, or Remote Software Access (XNMS) (Wall Mount, Shore Power ready, 25 Watt Continuous Duty)
6: Power, Numeric Display, Channel, Speaker/Microphone with Volume (Backpack, Battery [10 hour] Powered, IP67 Rating, 10 Watt Continuous Duty)
8: Full Menu, Volume, Full Display (Communications Site 19″ rack mount repeater, Site Battery Power only, 50 Watt Continuous Duty)
XX#: Country Code
2: North America / Oceania
5: EMEA / UK / Europe
6: South & Latin America
Configuration of Hytera Repeater IP MultI–Site Connect
Manual Set DNS On/Off: checked
DNS Server IP: 220.127.116.11 (for example)
Repeater Type: IP Multi–Site Slave
Jitter Buffer Length: 8
Master UDP–Port: 50000
IP Multi–Site Networking UDP–Port: 50000
IP Multi–Site Service: checked
IP Multi–Site Service UDP Port: 50001
Remote RDAC: checked
Remote RDAC UDP–Port: 50002
Master Domain On/Off: checked
Domain Names: master.dmrnet.org
Issues with connectivity
Typically the Hytera repeater has issues with an empty Network Authentication Key field. When you clear the password, it is still sending encrypted connection requests to the server. To solve this problem, you need to fill some text into the password field and upload the codeplug into the repeater then clear the password and upload the codeplug again.
BrandMeister has NAT traversal mechanism for Hytera repeaters. If you have experience with network DMR+ you need to switch off all existing rules of port forwarding.
To avoid problems with strong NAT or multiple repeaters behind single IP we created special tool TellusAgent. TellusAgent is a simple daemon that can run on very cheap hardware such as Raspberry Pi and act as a proxy server for repeater. TellusAgent supports single port IPv4/IPv6 connection on the uplink side and can be run multiple times on the single host inside your intranet.
TellusAgent should be run as many times as many repeaters you have connected by (one instance proxifies single repeater only)
- —connect–port <local port for Master service>
- —control–port <local port for RDAC service>
- —media–port <local port for DMR service>
- —server–address <domain name of BrandMeister DMR Server>
- —server–port <service port of BrandMeister DMR Server>
- —service–mode <set of bits>
- bit 0 – print to standard output
- bit 1 – print to system log
- bit 2 – run as daemon
Source Code of TellusAgent
Unexpected VSWR alarm
With latest firmware (A8) there seems to be some bug with false VSWR alarms. Uncheck the forward power / VSWR alarm options, to get rid off those annoying messages until they fix in some later release.
Wrong frequency on Dashboard or other strange behavior
After changing the frequency on Hytera RD625 – BM dashboard still shows original frequency, not the actual. Repeater normally operates without problems. Looking into the Logs – BM is seeing that the master sends the wrong frequency. (Still the original one before the change) Following will not help: reboot, power OFF / ON, change of channel.
Solution was that I took from another CPS file from another repeater, modified it and applied to RD625 in question.
The probable cause of this problem was the upgrade from version 7.0.x to 7.6.x. When this upgrade happens – it should convert repeaters codeplug to newer CPS and it probably was not successful.
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