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The Denver Radio Club, WØTX

Providing Amateur Radio Services for the Denver Area Since 1917.
Denver Colorado, U.S.A.
E-Mail to: W0TX@w0tx.org
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 Brandmeister-DRC Support Page 

This webpage provides Denver Radio Club's Brandmeister Network Resources.

This includes Configuration and Operations instructions,
links to other websites with Brandmeister info., and sample CodePlugs.

The Denver Radio Club DMR Repeater
is Now a BrandMeister Repeater

Our DMR repeater is no longer operating on the DMR-MARC network.
It is now running on the BrandMeister Network -- a world-wide digital amateur radio network.

For general information about using the BrandMeister Network, please to visit the following links:

dmr-utah.net

hamdigitaal.nl/?wpfb_dl=236 (this is a PDF file)

dmrx.net/files/US_BM_User_Guide.pdf

ciarc.org - Creating DMR Code Plug Files

Also, please read the full, updated, article about the change-over to the BrandMeister network
in the February & March 2017 issues of The Roundtable newsletter.

Please send us feedback about your experiences, suggestions,
or questions regarding our BrandMeister repeater & network.

Send your E-mails to: feedback@w0tx.org
Thank You!


DRC Brandmeister Updates


ATTENTION DRC BRANDMEISTER USERS
By Bill Rinker, W6OAV
Update of:
02/26/2017

The DRC BrandMeister repeater has a new powerful Local Talk group.
The new Local Talk Group is 310804 which replaces the original Local Talk Group 2.
The new Talk Group allows connections to it by remote users who either use a DMR Hotspot
or have access to a remote BrandMeister repeater.

Group 310804 is Statically Programmed on Time Slot 2 which means it is always on.
Therefore, local users monitoring this Talk Group will hear any incoming calls.

Users without DMR radios can monitor this Talk Group
by pointing their browsers to   http://hose.brandmeister.network/310804/  .
The webpage will show any calls that have occurred in the last 15 minutes.


Brandmeister Etiquette


Posted 01/27/2018

Brandmeister Dynamic Talk Groups

BrandMeister repeaters use dynamic Talk Groups (TG). These TGs only send DMR network traffic to the repeater when a local repeater user keys up a particular TG. The TG network traffic will be sent to the repeater for a period of 15 minutes after the most recent key up by the local user.

Due to the nature of these dynamic TGs, specific procedures must be used when keying up and using a TG. If done improperly several different issues can occur:

  1. A local user keying up a TG can isolate another local user from the TG he was using.

  2. A local user can key up a TG and disrupt an existing conversation on that TG.

  3. A local user can key up multiple simultaneous TGs on the same time slot which can create TG chaos.

Etiquette Before Keying Up a TG

Before keying up a TG, monitor the radio’s Channel Busy LED for at least a minute. If the LED doesn’t light then both time slots are idle. Key up your desired TG. Then listen for at least a minute before transmitting to determine if the TG is busy. The reason for listening is that, if a remote TG user is transmitting when you keyed up the TG, you will not hear his audio nor will the Channel Busy LED light. You will hear audio, and the Channel Busy LED will light, when the next remote user begins transmitting.

If the Channel Busy LED is on, or flashes on and off, then one or both of the time slots are busy. To determine if your desired time slot is idle or busy, wait until the Channel Busy LED is on and then key up your TG. If a Busy Tone results, then your desired time slot is busy. Do not key up again until the Channel Busy LED has been off for at least a minute indicating that the time slot is now idle. The Channel Busy LED will turn off and then back on between long conversation “overs”.

If keying up while the Channel Busy LED is on results in a Connect Confirmation Tone, then your time slot is idle and your TG has been activated. As mentioned above, listen before transmitting.

Operating Etiquette

After initially keying up a TG, give your callsign, your location, and the TG. For example, “This is W6OAV in Denver on World Wide”. This allows stations scanning to know who you are, where you are and what TG you just keyed up.

The wide area TGs, such as USA, WW, NA, etc should be used as a calling TGs. Make your call on these TGs, and then arrange to change to a TAC TG, such as 310, 311, and 312. Make sure that these TGs are clear before you start talking on one of the TAC’s. Asking “Is this talk group in use?” is a good way to start the conversation.

As with analog repeaters, you must ID. Unlike Fusion and D Star protocols, your callsign is not transmitted. Only your DMR ID is transmitted across the network.

Avoid prolonged contacts so as to leave air time for other operators. When you have a TG active you’re denying access for others to the Time Slot and to the many available TGs.

Because of long delays introduced by digitally encoding, network routing, and digitally decoding of DMR signals, communications delays are inherent. You should wait a minimum of 3 seconds after a transmission stops before keying up to accommodate breaking traffic. Then wait a second after receiving the Confirmation Tone before speaking. This allows the repeater and radio to complete syncing.

The DMR-ID of a station appearing on the TG may be displayed momentarily on your radio. This can occur when a station momentarily keys their transmitter to switch TGs on a repeater or hotspot. This is not necessarily an indication that the station wishes to be called. The station may only wish to monitor the TG. Wait to see if the station IDs indicating his intentions.

Do not engage in “TG Hopping”, a process where a station keys up a TG, listens for a short period of time, then keys up another TG, listens for short period of time and then repeats the same process with another TG.  Do not key up another TG before using the DMR Disconnect TG (4000) to release the active TG. Remember, a dynamic TG will stay active for 15 minutes after the last key up. We don’t want TG chaos!

In summary, be courteous and have fun chatting with ham all over the world!

73, Bill, W6OAV



Denver Radio Club's WØTX Brandmeister Code Plugs

Updated on 1/21/2018

Rocky Mountain Ham Radio graciously provides sample DMR code plugs for most radios on their website.

The DRC has made an inter-club agreement with RMHR to link to their website
for sample code plugs, which may be edited by the DMR user.

These sample code plugs include the Denver Radio Club's
Brandmeister DMR and traditional FM analog repeaters.

The code plugs are available Here.


Using DMR Radios on the Yaesu Fusion Network
via the SharkRF OpenSpot

By David Haan, AA0DH   (AA0DH@ARRL.NET)   Updated 01/27/2018

For those of you with a TYT MD-380 or MD-390 radio, and a SharkRF OpenSpot, you can participate on the DRC’s Fusion Repeater as well as a number of Fusion Wires-X rooms (analogous to Talk Groups) without the purchase of another radio. Switching your existing DMR radio between the DMR network and Fusion network can be done directly from your radio with a simple twist of the channel knob and a push of the PTT button.

With the addition of a few channels to your Codeplug, and adding a profile to your OpenSpot, you will have the capability of converting your DMR voice traffic to C4FM on transmit and converting C4FM voice traffic back to DMR on receive.

Graphic Image of DMR-Fusion Interconnection

For a more complete introductory description, please see the February 2018 issue of The Roundtable newsletter.

Download David's Configuration Instructions (in .pdf format) Here.