As explained in a previous article, we have been working on enhancing our FlexRadio 6700-based Remote Operating Setup to include additional remote control client options, better remote networking via the Internet, and better integration with our microHAM system.

Remote Operating Enhancements

This project involved the addition of the following capabilities to our base Remote Operating Setup:

• An upgrade to FlexRadio SmartSDR V2 to add improved networking of our FlexRadio 6700 radio over the Internet
• The addition of a FlexRadio Maestro Console to make it easier to operate our station remotely and enable sending CW via paddles.
• A new, simpler VPN solution to allow remote control of the microHAM Station Master Deluxe Antenna Controller and Elecraft KPA500 Amplifier, which is part of our Remote Operating Gateway
• Updated Laptop PC VPN and Remote Control Software to allow operation of our DXLab Logging Suite software with the Maestro in SSB Phone and CW modes
• The installation of the latest version of WSJT-X software to add current JT9, JT65, FT8, MSK144, and WSPR digital modes to our Remote Operating Setup

These steps are now complete, and we have some good results to share.

SmartSDR Configuration

The first part of the upgrade was to update to SmartSDR V2. This upgrade enables much improved SmartSDR operation over the Internet. Our previous approach, which used a tunneled VPN connection combined with the previous versions of SmartSDR, did not always perform well when used with low-bandwidth or high-latency Internet connections. SmartSDR does much better in this area.

 

 

 

 

 

 

 

 

 

 

 

 

Both the SmartSDR CAT and the SmartSDR DAX application have been updated to allow software on a PC being used to operate the FlexRadio SDRs over the Internet to gain access to CAT and sound interfaces associated with the radio.

Maestro Operations

We also added a Maestro Console to enhance the usability of the SDR radio portion of our Remote Operating Gateway. The Maestro is very easy to use and extends the available controls and display space which was limited when using just a laptop PC. The Maestro supports direct microphone connections for phone operation and also works with connected CW paddles for operation in CW mode. I have been using a single-level paddle along with our Maestro at speeds of 22 WPM with full QSK. Sending CW at these speeds with the Maestro works well.

The Maestro has built-in WiFi and Ethernet connections and full support for SmartSDR V2’s connections over the Internet. The Maestro can operate from AC power or from an internal battery pack. I have a couple of spare rechargeable batteries for our Maestro to support longer operating sessions on the battery.

Remote Operation using TeamViewer

We have been using a combination of TeamViewer Remote Control software and a router-based VPN solution to enable control of our antenna controllers and station power/amplifiers. This arrangement works well, but most of our readers probably do not have a router to support VPN connections or the networking knowledge to set up a secure VPN system.

Using TeamViewer’s built-in VPN capability, a much simpler VPN solution can be realized. You simply install TeamViewer on a PC in your shack that can access your station accessories and on your remote-operating laptop or PC. You then enable TeamViewer’s VPN option, and the configuration is complete.

We now use TeamViewer to set up both a VPN connection and a remote desktop control connection to a computer in our shack which can control amplifiers, power, and other station accessories associated with our Remote Operating Gateway. We use TeamViewer in this way to control our microHAM Station Master Deluxe antenna controllers, RigRunner remote power controller, a microBit Webswitch device, and an Elecraft KPA500 amplifier which are all part of our station’s Remote Operating Gateway.

With the addition of the SmartSDR and the updated TeamViewer/VPN setup, we can operate our station remotely over the Internet. We have tested our setup using a Wireless Hotspot modem and Verizon’s LTE service. The combination of our PC running the DXLab Logging Suite and the Maestro work great in this configuration.

Startup Sequence

We have found the need to initialize the networking configuration in a specific order to get everything running correctly. The steps that we use are as follows:

1. Connect the laptop PC to the Internet
2. Bring up the TeamViewer VPN connection
3. Run SmartSDR on the laptop PC and log in to SmartSDR Remote
4. Bring up the DXLab’s Suite, including Commander (currently, DXLab’s Commander has some issues connecting when the FlexRadio protocol is used. We have found that the KENWOOD protocol works fine.)
5. Bring up the remote control application for the Elecraft amplifier and access our RigRunner power controller and microBit Webswitch units to turn on accessories as needed.
6. Initiate a second TeamViewer Remote Control connection and use it to run the microHAM remote antenna controller in a single window
7. Shut down SmartSDR on the laptop PC and bring up the connection to the radio via the Maestro.

There is obviously still some room for simplification in this initialization procedure. I expect some simplification as all the software involved becomes more mature and is further adapted for remote operation.

Once initialized properly, it’s simple to use the PC and Maestro combination to work SSB Phone or CW contacts. The DXLab Logging Suite will follow the radio and track modes, handle split operation, and allow control of our antenna rotators via DXView. We can click on spots in DXLab’s SpotCollector to automatically set the FlexRadio SDR’s mode, frequency, and split configuration. The Maestro and DXLab will stay in sync during tuning, mode changes, and other radio operations.

Remote Operation with WSJT-X

The final part of this project was to add the latest version of the WSJT-X software to our Remote Operating client laptop PC to enable FT8 operation on the HF bands and MSK144 for Meteor Scatter work on 6m.

We do not use the Maestro for digital operations. Instead, SmartSDR running on our remote laptop PC is used. We also use the JTAlert application to create an automated bridge between WXJT-X and the DXLab Logging Suite.

The combination of SmartSDR V2 and WSJT-X works great remotely. We have used this combination to make quite a few FT8 contacts on the HF bands and several Meteor Scatter contacts on 6m using MSK144 mode.

These enhancements to our Remote Operating Gateway have helped Anita and me operate more. I have our Maestro in my home office or on a table in our kitchen, where we can listen to the bands and work DX when the opportunities come up. Remote Operating, even if it’s just from another room at your QTH, is great fun!

Additional Planned Enhancements

In the near future, we should be able to begin the next step in our station upgrade plans – the addition of an Elecraft KPA1500 shared amplifier. The new amplifier will enable our Remote Operating Gateway to operate at 1500w on the HF bands and 6m.

This project has turned out to be somewhat involved, so we will be providing a series of articles to explain what we did:

• Part 1 – System Design and Hardware Installation
• Part 2 – Client/Server Setup and Software (Shack Equipment, Computers, and Software Enabling Remote Operation)
• Part 3 – On The Air Remote!
• Part 4 – Remote Operating Enhancements (this post)
• Satellite Station 4.0 Part 7 – Flex SDR Satellite Transceiver to Enable Remote Satellite Operation
• PTT Switch for Remote Operation
• Operating FT8 Remote on the 6m band

Fred, AB1OC