East Tower DMR

Repeater OUTPUT/Tx: 449.2mhz / Repeater INPUT/Rx: 444.2mhz

Digital Mode: CC1 TimeSlot 1(only): Brandmeister Access TimeSlot2: Local Traffic

Analog Mode: Tx and RX Pl tone of 162.2

E-Power added!

1-19-2020

Battery backup power was installed recently. This gives the repeater protection against power fluctuations at the site as well as repeater use during power out conditions / emergencies. Two 12v 35ah deep cycle AGM batteries were installed in series and connected to a Tripplite UPS. The UPS shows about 98 minutes run-time with these batteries with the repeater in stand-by mode. More testing will have to be done to see what run-time looks like while the repeater transmits on battery power.

The plan is to install two more batteries in parallel to up the amp-hours to 70. These additional batteries were donated by W0WFM, so thanks David!

At the same time as the e-power was installed I also replaced the 20 amp Astron power supply I was using with a 60 amp DuraComm power supply, as I was seeing voltage drop with the use of the 20 amp Astron supply. Thanks Craig, W0CDG for the use of the power supply! There is no voltage drop now and the power out is a steady 54 watts!

It Begins....

Fall 2019

So I recently purchased a second hand Hytera RD982 repeater with the goal of covering my local part of the state with its only digital repeater! So far (with the huge help of my club members) we have found it a home, installed it, connected it to the BrandMeister Network, and it is currently live at a low transmit power of 5 watts!

There has been some snags in the process including changing tower sites, having to swap TX and RX frequencies do to my mis-configuration and right now fighting a possible bad antenna or connector... I'm crossing my fingers that its the second one! But it will take a climb with testing gear to find out which for sure before i can turn up the transmit power....

The repeater came to me running very old Firmware (ver4) and with the help of Terry Gillard - NX7R with TTG Communications, I was able to get it running almost current firmware (version 8). I am holding off upgrading to version 9 software for the time being. I spent weeks contacting Hytera dealers in the US and Terry was the only dealer willing to help me as a HAM! Without his assistance this project would have failed before it got off the ground! He has been very prompt and professional and I cant thank him enough... Please visit his website and know that he will help you out with your HAM related needs!

http://www.ttgcommunications.com/

During installation and initial config

At the base of the tower

Inside the repeater and a good look at the flatpack UHF duplexer inside...

Here is a Coverage Plot of the Hytera from what we call the "East Tower" site, below is the site, an old AT&T Microwave site from many years ago!