Radioddity GD-77S Introduction and Demonstration Using A Hotspot

Radioddity GD-77S and the Sharkk RF OpenSpot 2
An Introduction To DMR by Gena, M0EBP, from a blind person’s perspective!

February 2019


I hope you enjoy these recordings that I have put together after exploring DMR for a few weeks within early 2019. The GD-77S software is V1.1.10, Windows 10 and Jaws 2018..

The zipped bundle is available to download in the Related Downloads section below, and a description of the audio files and some useful DMR links follow:

Apologies for unwanted background noises during recording.

Audio Recordings included in the bundle

As an introduction Gena describes the Radioddity GD-77S and more.

Gena opens the software and creates a code plug with just one analog repeater keeping it simple to get started.

Incomplete! Gena opens GB3PP using the GD-77S.

Gena adds talk groups to the code plug. TG9 and TG 9999 for the OS2 and TG91 World Wide talk group. Not forgetting to unlink..

Gena struggles with the OS2 interface using the Chrome browser and Jaws. Hopefully it is clear that important settings should match in the modem and connectors sections of the interface. Remember to save after making changes.

Gena takes a tour of the code plug and discusses Brandmeister and Phoenix servers and how 2 different numbering systems are linked for UK users.

Additional Files included in the bundle:

Minimal entries: GB3PP TG 91 WW TG 9999 Echo and TG 4000 Unlink.

the UK Brandmeister talk-groups listed below. Unlink is on channel 1 of mode 2. GB3PP and GB3RF are 2 & 3 of mode 2 and are untested as yet.

These are the 2 code plugs observed in this project. Having removed my ID.

Useful URLs: (Obtained 6 February 2019)

Essential JAwS Scripts:

Radioddity software download.

Brandmeister UK, includes a link to get registered

Phoenix UK

Open DMR, Phoenix UK and Europe DMR network

Northern DMR Cluster visit here if you want to view a collection of DMR Plus links i.e. 2350 linked to 4400.

To extend my coverage, view this youtube video

Brandmeister Talk-Groups UK: (6 February 2019)
TG 2350 United Kingdom 4400 listen live
TG 2351 Chat listen live
TG 2352 Chat listen live
TG 2353 Chat listen live
TG 2354 Ireland listen live
TG 2355 Scotland listen live
TG 2357 Wales listen live

23500 S.West listen live
TG 23510 S.East listen live
TG 23520 N.West listen live
TG 23527 UK Mil & Vet listen live
TG 23528 UK Hackspace listen live
TG 23529 Bracknell ARC


I am still learning about DMR and while I am glad to share my findings I cannot and do not suggest that my understanding is completely accurate. These are my findings as of February 2019.



Call: M0EBP
DMR ID: 2346259
Loc: IO83PS

Related Downloads

D77S Introduction and demo bundle (download file and unzip)

TS-590SG MP3 Manual recorded by Ian DJ0HF

An unabridged MP3 recording of the Kenwood TS-590SG operating manual has been added to the Active Elements site. You can find the manual in the Recordings/Manuals section or at the foot of the TS-590 accessibility review under the Related Documents Heading. The recording has been narrated and produced by Ian DJ0HF, and each chapter has its own individual MP3 track. Just download the Zipped archive and listen to the tracks using your favourite MP3 player.

Recent Additions

Thanks to Curtis Delzer K6VFO, we have recently added a fully indexed version of the Kenwood TM-V71A/E manual. The DAISY conversion has added over 600 index markers, and allows easy navigation at 3 levels, Section, Sub Section, and Steps.

The above DAISY recording can be found on the TM-V71E Evaluation page, and from the Manuals page, accessed from Recordings.

You can also use the Search field at the top of each page to find items of interest!

Yagi Multiple Element Comparison

Yagi Multiple Element Comparison

By Kelvin Marsh, M0AID

November 2013

Back in October, following a discussion on the Active Elements reflector, I thought I would try an experiment gradually reducing the number of elements on my beam, and recording the results. I looked for the most distant station I could find, and it happened to be V6P in Micronesia on 20 metres.

The bearing was 22 degrees, and the distance was 8000 miles. Also, this was in the middle of the afternoon, and I would expect him to perhaps be stronger at other times.

The recording starts with the SteppIR antenna using 3 elements, and this is marked on the recording with 3 beeps. I then fully retract the Director, and the result has 2 beeps. Finally, I pull in the Reflector and this has one beep. I then repeat the sequence, but this time pull in the reflector first, followed by the Director. The final 3 beeps indicates a return to 3 elements.

I have to say, the difference is not huge between each retraction, but the difference between 1 and 3 elements is probably the difference between making a successful contact within a reasonable time, or spending significant time calling him without making yourself heard.

By the way, the signal strength on 3 elements was 7, and the signal strength on a single element was about 4. You can judge the readability for yourself!

The MP3 recording can be heard by clicking the following link:
V6P on 20 metres

The following day, I conducted a similar test with KH0M, but this time on 12 metres. The bearing was 30 degrees, and the distance 7500 miles. The entity is the Mariana Islands.

This time I worked him quite comfortably using 400 watts before making the recording. The difference between 1 and 3 elements is much more noticeable. Again, you will hear 3 beeps for the 3 elements, and so on. In the first few seconds you will also hear how I reduce the HF hiss by turning back the RF Gain, and during the two and single element recording you can distantly hear a Brazilian station calling on the frequency from behind me. Using the Director and Reflector dramatically reduces any signal from the back of the beam. Whilst KH0M was actually working split in the recording, attenuating unwanted signals from behind you can be extremely useful.

The MP3 recording can be heard by clicking the following link:

KH0M on 12 metres

Recent Additions

Thanks to the recording skills of Ian DJ0HF and Bill Laurie, we have recently added MP3 manuals for both the Kenwood R5000 and MFJ-998 auto tuner.  We have also added the TS-440S manual in Word document format.

The above MP3 audio and TS-440 document can be found on the Manuals page, accessed from Recordings.

You can also use the Search field at the top of each page to find items of interest!

Accessibility Review of Amateur Contact Log 4.2

Accessibility Evaluation and Demonstration of Amateur Contact Log 4.2

By Kelvin Marsh M0AID

Updated Decemmber 2013

I have been using Amateur Contact Log version 3, better known as A C Log, for about 5 years. The three great features that make AC Log stand out for me, are the integrated Cluster spots, the seamless Log Book of The World transfers, and the automatic callbook lookup.

Scott N3FJP has rewritten A C Log using C#, pronounced as C Sharp, and added several new features. Thus, Amateur Contact Log version 4 was born. In A C Log 4.2, Scott has added vital short-cut commands for blind amateurs using screen readers, and made many changes to greatly enhance the experience for those relying on speech output. Whilst I normally just comment on Ham accessibility on the Active Elements site, it was a privilege to work with Scott, and actively contribute to the AC Log accessibility project.

The Short-Cuts

AC Log is a Windows program, and a screen reader user will now be very comfortable moving through the Menu Bar, and navigating the setup dialogs. In addition, Scott has added several short-cut keys to enhance the operation of the logging area itself.

To access the Main List, use control+Q. This places the focus in the listview, and you can move through the previously logged QSOs with the use of the arrow keys. The Main List speaks perfectly, with column headings ahead of each item, and as a bonus, will read the complete line, even beyond the visible screen. While in the Main List, press the tab key to be shown various options for the selected QSO, including editing and Deletion. Again all of the options have dedicated short-cut keys. Important note, if you are a Window-Eyes screen reader user, you must have version 8.4 or later to read the Main List information in the correct order.

To access the Cluster area, use control+Z. This places the focus in the listview, and you can use the arrow up and down keys to move through the incoming cluster spots. Even though the spots are continually scrolling visually, the keyboard focus remains on the selected spot, even though it may disappear from the display. Again, all of the information for each spot is announced by the screen reader, with column headings. Simply press Enter to move the spot to your logging form, and have your radio automatically change to the frequency and mode.

There are many other accessibility benefits of the V4 rewrite, including the easy access to the Awards tables, and the ability to ‘Tab’ into the Help text in the setup dialogs. These are covered in the Overview recording below.

Usage overview

So far, we have had positive results testing A C Log with Window-Eyes, NVDA, System Access, JAWS, and ZoomText. I usually got a lockup using System Access when Calculating my Award totals, in September 2013, but I think more testing is needed by more experienced SA users.

As always, I would recommend that every user sets up a short-cut from the Desktop, to automatically run A C Log as Maximised. There may still be a need to re-label some fields, depending on the screen reader, and I think we are pushing some of the screen reader boundaries, but I have no doubt any issues can be addressed.

The one thing I’ve seen with my testing, Is that all the screen readers handle the same situation slightly differently. Scott actually installed NVDA to help with his testing, so if you are getting unexpected results, try it with NVDA to figure out what is happening.

Below, you will find three recordings. The first is an Overview looking at the screen reader accessibility of AC Log ‘out of the box’. The second shows some of the basic configuration options offered by AC Log, and how I personally use Window-Eyes to monitor areas of the screen with User Windows and Hot Spots. The third dips a bit further into how you setup User Windows and Hot Spots in the Window-Eyes screen reader.

Although I have used some advanced functions of my screen reader in the third demo, you may find the recordings give you ideas of how to customise your own access software.

Scott also offers many N3FJP contesting programs. These are being rewritten in C# at the moment, and Scott is currently incorporating many of the accessibility changes developed in AC Log.

Finally, if you want to use the integrated Voice Navigation feature offered by AC Log, Scott recommends the latest Wave files are downloaded for the C# programs. There is a link to the files in Related Downloads below.

Amateur Contact Log can be downloaded from:

Related Downloads

AC Log 4.2 Voice Navigation Wave Files (zipped archive)
AC Log 4.2 Overview MP3
AC Log 4.2 Configuration MP3

AC Log 4.2 Window-Eyes Extra MP3

Kenwood TM-V71E Accessibility Review

Image of TMV71E with detached head and microphone on top of radio.
Accessibility Evaluation of the Kenwood TM-V71E

By Kelvin Marsh M0AID

June 2013

The Kenwood TM-V71E is a mobile VHF and UHF transceiver for FM communication. There is not a terrific choice available for a blind amateur in this market with accessibility, and if you want a multi-mode radio, your best bet is probably one of the so called ‘shack in a box’ transceivers that also covers HF.

The TM-V71E has been around for several years, and is considered to be near or at the top of the shopping list for blind amateurs wanting a 2m and 70cm FM radio. Although generally accepted as one of the most accessible radios in this market, I thought it would be worth evaluating the TM-V71E, and I thought it was useful to jot down some of my findings.

I don’t intend to write a full review, and I am delighted that there are so many accessible resources available to get you started. Under the Related Documents section on this page are an MP3 review and demo by David 2M0TSR, the full manual recorded in MP3, and the full manual in HTML format. Each describes the layout and operation, and I would encourage any owner to check them out.

I have evaluated the TM-V71E, and this is the European version. I believe the other versions are very similar in operation, but with frequency allocations more appropriate to their region.

As I am almost entirely an HF operator, I was initially surprised by the small size of the TM-V71E! I’ve approximately measured the width to be 140mm, the depth 190mm plus front controls, and the height about 40mm.

The radio has one N type antenna socket, computer and TNC sockets, and will support two external speakers, one for each VFO. It transmits on 2m and 70cm, and has three power levels. Low is 5 watts, Medium is 10 watts, and High is 50 watts. There is no numeric keypad on the front panel, but the chunky microphone has a keypad, and 4 additional programmable buttons. The radio can also be used to receive frequencies outside of the amateur bands in FM and AM modes.

The front panel controls are very well defined, and the buttons are a hard plastic giving no finger drag as you move from control to control. There is a small tuning knob at the bottom left of the facia, And this clicks as you tune through the frequency steps. This knob is also used for selecting memory channels and moving through the Menu. The bottom right has two Volume and Squelch knobs, for independent VFO a and VFO B control. These knobs and the Tuning knob can also be pressed for additional functions.

The test radio was fitted with the optional VGS-1 voice guide. This gives spoken access to the majority of button presses, but I must stress that there is still a need to read and understand the operating guide, as the radio is surprisingly complex in use, and there are several potential pitfalls just waiting to trap the casual blind operator .

The Memories are spoken, giving accessibility to the storage of repeater programming, and the Menu system can be navigated with speech output. In line with other Kenwood radios I have tested, the Menu channels are not fully described as you move from item to item, and it is necessary to have an external reference list at hand.

Menu access is achieved by pressing the Function key followed by the Tuning knob. You are given the spoken prompt ‘Menu 001’, and further turns of the Tuning knob click through to ‘Menu 002’ and so on. As you move through the menu, the selected parameters are not automatically spoken for each menu. I found I had to press the Tuning knob to be placed into a talking list of the parameters. A further press of the Tuning knob saved the setting, and returned me to the menu list.

Using the microphone keypad, it is very straightforward to enter a direct frequency, but first, one of the Programmable Function (PF) buttons must be designated as Enter. I found that it was ideal to use one of the four PF buttons on the mic for this purpose, and menus 509 to 512 can be used to set these buttons. I found the PF keys seem to be programmed in the reverse order to my expectation. For example, 512 is the top PF button on the mike, and 509 is the bottom button.

The tone key cycles through Tone, CTCSS, or DCS, and Off. These functions are not initially spoken, and each setting has the same higher pitched beep, with the Off position having a lower beep. I also found that when on the CTCss and DCS positions, the radio usefully became silent, as only signals with the appropriate coding are allowed through. I guess this might cause some head scratching if the tone button is pressed accidentally.

If I needed to set the CTCSS, I pressed the Tone button until I heard the lower pitched beep of the Off position, pressed a further two times, and pressed function. Now, a further press of the Tone button would speak ‘CTCSS frequency 88.5’. The tuning knob is then used to make the selection, and a further press of the Tone button saved the setting.
In its simplest operation, I found the Rev key worked by switching the input and output frequencies when listening to a repeater. I briefly investigated the more advanced Rev functions, and I could change the plus or minus offset frequency. Pressing Function followed by Rev toggled the settings between Off, minus, and plus. The Off position, where there is no offset, gave a low pitched tone, and plus and minus gave a higher pitched tone. At each stage I pressed VFO A volume control to read the frequency, in conjunction with the Rev key, to find out what I had changed. There is plenty of scope for confusion using this function, and I suspect there will seldom be a need to use it beyond initial setup, and possibly never.

Here in the UK, the 2m repeater outputs are in the frequency range 145.600 to 145.800. I found that entering a frequency in the repeater block automatically set the correct offset for the transmit. It is then just a matter of selecting the right CTCSS tone and saving to memory.

As we have come to expect from Kenwood, the memory channels are fully accessible. The channel numbers are spoken and their status is announced. If you have lots of repeaters in your area, it would be useful to maintain a list of frequencies and the memory channels used. There is a facility to label memory channels, and while the actual labelling process was inaccessible, I did add one label, with sighted help, to see what happened. Unfortunately, only the channel and frequency were spoken, the tag was ignored.

Since I started to evaluate the radio, I was intrigued by the voice announcing ‘PM2’ at the power on. Investigating further, the radio has 5 Programmable Memory states. This allows a single user to setup the radio for several types of operating or for use in different localities. It also means that several different users can tailor the functions to their particular preference, and store the individual setup.

This system is again accessible, but I think could cause a degree of confusion if the wrong buttons are pressed. Imagine setting up the PF keys on the microphone in PM1, and then accidentally moving to PM2. All the settings still reside in PM1, but appear to be lost.

With this scenario in mind, the way of changing the PM status is as follows. Simply press the PM button until ‘PM’ is heard, and then press one of the keys running along the bottom of the front panel. The Call key turns PM mode off, the Function key moves you to PM1, the tone key to PM2, and so on.

The memo and conversation functions of the VGS-1 work as described in the manual, and can be easily used.

Unfortunately, I could find no way of having the VGS-1 tell me the incoming signal strength.

Overall the Kenwood TM-V71E is highly accessible, but there are still some areas where the blind operator has to infer the information, rather than being told it explicitly. I am personally surprised at the complexity and rich feature set of this small VHF and UHF radio, and it is certainly a unit where the manual needs to be read thoroughly. Once again, Kenwood have worked extremely hard to make the TM-V71E very accessible through the VGS-1 voice guidance system.

Related Downloads

Kenwood TM-V71E MP3 Audio Review by David 2M0TSR
TM-V71E Full MP3 Manual (Please Right click and Save Target As:
TM-V71E Full DAISY Manual (Please Right click and Save Target As:
Rob K6DQ has prepared a fully accessible HTML manual, and related files
Kenwood TM-V71E K6DQ files
Dowload and unzip this truely excellent file containing a fully indexed HTML web page giving links to the text and descriptions of the user manual
The K6DQ file also contains:
Kenwood TM-V71E HTML Menu description
Kenwood TM-V71E TXT Microphone Keypad Description
Kenwood TM-V71E TXT Front Panel Description
Handihams have, at the time of writing, the following files and audio tutorials in their Manuals section: