Why Hotspot

Why a hotspot
I don't know anything about these or why I would want one though.

I understand as I did receive a few emails with questions regarding the unit. In a previous article (the DV4mini review) I did explained in the introduction the purposed of a digital hotspot. Maybe I should have used is again. You can find the complete article on my personal website in the publication page. Below you will find part the introduction text of this review. Hope this help.

"More and more modulation protocols from different vendors are now available for the ham community, including D-STAR, DMR, and C4FM (Yaesu’s System Fusion). In the ham digital world, a reflector is a server connected to the Internet that acts as a virtual repeater. Digital hotspots provide the ability for amateurs to connect to those Internet reflectors from their digital transceivers. Hotspots contain a low-power transmitter and receiver for amateur frequencies, and plug into a computer connected to the Internet. "

You can have repeaters, stations and hotspots connected to the same reflector via the Internet or Hamnet (private Internet for hams). Let say you're in Florida and you have an OpenSPOT, you can connect to reflectors around the world and be broadcast on repeaters network as you were local. Please note that you need a different radio on each mode, except for cross mode in DMR and C4FM demonstrated in this video. 

73 Pascal VA2PV

The SharkRF OpenSPOT new review

The SharkRF OpenSPOT new review

This is the long version video of the QST review video (October 2017 edition). This video was publish with a reprinted permission, [October 2017] QST; copyright ARRL.

SharkRF IP Connector Protocol server [Testing]

SharkRF IP Connector Protocol server

This daemon can be used to create your own private radio network using SharkRF devices like openSPOT, or your own custom software/hardware, as the SharkRF IP Connector Protocol is open source.

Simply it's like a TAC310 off of the DMR network.  A standalone talkgroup.

All connected and logged in clients receive the data you send to the server.



SharkRF IP Connector Protocol server [Testing]

Setup ::
Client Setup for the SharkRF IP Connector Protocol server
1.) create/use within your DMR radio :: Talkgroup 9
2.)  in the connector select ::  SharkRF IP Connector Client

Fusion C4FM SharkRF Openspot Mobile Setup

SharkRF Openspot Mobile Setup

sharkrf :: Add-ons for Firefox

sharkrf :: Add-ons for Firefox

Artist Rizal Fauzi

SharkRF openSPOT Configuring the IP Connector Server Step By Step (Linux * Debian)

SharkRF openSPOT Configuring the IP Connector Server Step By Step (Linux * Debian)

Here is a script to auto install the srf-ip-conn-srv. This allows you to run a server that your sharkrf can connect to. The below instructions are for debian based linux distros.

Make sure you have the build-essential and cmake to compile the program

Part #1


The below link will take you there if you need a good place to start. This tutorial is written as part two, picking up directly where part one left off.

SharkRF on DMR setup

The Openspot first with the supplied network cable (it can also be used another) to connect to the Internet router. Then connect the power supply to the openspot and then plug the power supply into the socket. The Openspot now starts.

After 1 minute, the Openspot is ready for operation.

Since no screen can be connected to the Openspot, all settings are set via the Internet browser. To do this, go to The digits are to be replaced by the IP address, which the Openspot has in its own network.

The password is entered after the call. The default password is: openspot

Click on "Connectors" at the top of the blue bar.

Click on "Advanced mode" in the blue bar.

Now select "Homebrew / MMDVM" under Connectors and click on the blue field "Switch to selected". The question, which appears please answer with "CHANGE MODEM MODE".

VE3WZW SharkRF OpenSPOT solar power mobile

VE3WZW SharkRF OpenSPOT Solar Power Mobile Hotspot

With SharkRF openSPOT you do not need a computer or Rasperry PI. Everything is already integrated in the blue box so that DMR(digital mobile radio) = Brandmeister / DMRplus / DMR-MARC or FUSION or DStar operation can be started immediately after the one-time necessary settings (capturing the own DMR ID, etc.).

The openSPOT requires the following hardware for operation: 
• openSPOT 
• Internet connection via Ethernet cable (no WLAN!)

The openSPOT works with a simplex frequency, which you can choose by yourself. It is available as a 70 cm version.

Motorola SL7550 aka SL4000 EMEA
Motorola Bluetooth connect to SL7550
Extra Battery SL7550
by :   VE3WZW Andre

Parts List below :

SharkRF openSPOT - Timeslots - BrandMeister

SharkRF openSPOT - Timeslots - BrandMeister
Note that on BrandMeister, DMO mode links the two timeslots together, so this setting is irrelevant.

SharkRF openSPOT -  https://www.sharkrf.com/products/openspot/manual/

– You can set the TDMA channel for data in DMO mode. DMO mode is enabled if the modem’s RX and TX frequencies match, or the modem is in DMR Hotspot mode. In this case, only one TDMA channel will be used for communication. Note that on BrandMeister, DMO mode links the two timeslots together, so this setting is irrelevant.

2 Static Talkgroups to different Time slots

In Brandmeister you can set multiple Static Talkgroups. On static talkgroups you don't need to link by pressing the PTT. So static Talkgroups can be add to a scanlist on your tranceiver.

if you have, for example, 2 static talkgroups set and you have a QSO on the first then it can be happening that on the second talkgroup another QSO wil start. This can disturb your QSO on the first Talkgroup since there is only one Time slot.

Is it possible to set the second Static Talkgroup to the second Time slot? I think this wil be a great feature but i don't know if this wil be possible in openspot.

DMR Hotspot from SharkRF

DMR Hotspot from SharkRF

A few years ago, I picked up some used MOTOTRBO gear to use on our local DMR repeater system (MOTOTRBO is Motorola’s version of DMR). Here in Colorado, the Rocky Mountain Ham Radio group has been instrumental in establishing a great network of DMR repeaters, a real asset for Colorado radio amateurs. See Rocky Mountain Ham Radio TRBO/DMR Network.  Worldwide, the DMR-MARC organization has created a robust network of MOTOTRBO repeaters in over 60 countries.
A more recent development is the establishment of the BrandMeister Network, which promotes more of a homebrew approach to DMR. This evening, the BrandMeister dashboard shows 634 industrial repeaters (commercial equipment), 263 homebrew repeaters and over 1300 hotspots of various types.  A variety of DMR hotspots are available, including the DV4mini. I’m not going try to list all of the hotspots available as I’m sure I’ll miss something.  The SharkRF openSPOT caught my attention because of this excellent review by John ‘Miklor’ K3NXU. Because of its popularity, the openSPOT is on backorder (price: 182.5 Euro).