Accessibility Evaluation of Gemini HF-1K

Accessibility evaluation of the Linear Amp UK Gemini HF-1K

By Kelvin Marsh M0AID

September 2019

Background

The Linear Amp UK brand is well known in the UK, and reading their history on http://www.linearamp.co.uk reveals they have quite a heritage.

I was having ALC compatibility issues between my previous amplifier and radio, and was actively looking at replacement options. The solid state Gemini HF-1K seemed to tick all the boxes, but as a blind operator I initially had concerns that the amplifier was controlled with a non-accessible touch screen.

New Amplifier Requirements

The primary requirement for my new amplifier was to easily switch between Standby and Run mode. It is necessary to make certain checks and adjustments with low power, and it is best to set the amp to Standby when these are done. I did not want to be poking around a touch screen that gave me no aural feedback when performing such a frequent task.

Having previously used a switch in the PTT line with other amplifiers, I knew there was likely to be an easy way of stopping the amplifier from transmitting. reading the manual, I saw that the HF-1K could be started in Run Mode, and thus having a physical switch to effectively put the amplifier into Standby seemed an ideal solution to toggle between the modes.

A huge plus point for the blind operator is that the HF-1K senses the operating frequency, and has automatic band changing. No need to manually turn knobs, or have electronic interfaces between amplifier and radio.

High on my wish list was the need to have some proper confirmation that the correct band and antenna had been selected. In the past I’ve used an Icom IC-PW1, and this time I wanted more feedback than just listening for relay clicks and other noises. Some kind of voice guidance was desirable.

My final concern was about error handling. The manual explained how the HF-1K handles error trips, and how the resulting messages need to be cleared using the touch screen. The amplifier enters a protection mode when errors are caught, and the operator cannot continue without taking action. In practice my amplifier has never tripped while in normal operation, but it seemed sensible to make sure I could clear messages without using the touch screen.

To summarise my concerns, I didn’t want to be prevented from using the amplifier because there was no way to perform a simple but mandatory step.

Speech Support

Before buying the Gemini, I read the Eham reviews, and saw that Simon G4ELI had written the remote software for the amplifier. After speaking to Roger GW4WND, who builds the HF-1K, and having an offer from Simon G4ELI to add Speech Support to his software, I felt confident to place an order.

The amplifier took about 2 weeks to arrive, and Simon G4ELI sent me the first version of the Speech Support software on the same day. Fantastic!

Gemini HF-1K Front Panel

The Gemini HF-1K Amplifier front panel

Gemini HF-1K touch screen

Close up of the front panel touch screen, simple, logical and concise

Audio Demonstration

I’ve now had the Gemini HF-1K for a couple of months and I am delighted with it. You can hear my audio review and demonstration by clicking the following link:

Gemini HF-1K MP3 Audio Demonstration

Full Speech Command List

===============
Ctrl+’A’ Select antenna A
Ctrl+’B’ Select antenna B
Ctrl+’C’ Select antenna C
Ctrl+’D’ Clear trip
Ctrl+’1′ Select band 1.8 MHz
Ctrl+’2′ Select band 3.5 MHz
Ctrl+’3′ Select band 5 MHz
Ctrl+’4′ Select band 7 MHz
Ctrl+’5′ Select band 10 MHz
Ctrl+’6′ Select band 14 MHz
Ctrl+’7′ Select band 18 MHz
Ctrl+’8′ Select band 21 MHz
Ctrl+’9′ Select band 24 MHz
Ctrl+’0′ Select band 28 MHz
Ctrl+’X’ Select band 50 MHz
Ctrl+’O’ Toggle speech support
Ctrl+’P’ Report peak power
Ctrl+’S’ Report status
Ctrl+’W’ Report SWR
Ctrl+’T’ Report temperature
Alt+’R’ Switch mode to Run
Alt+’S’ Switch mode to Standby

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

Background

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

001_GD-77S_OS2.mp3
As an introduction Gena describes the Radioddity GD-77S and more.

002_GD-77S_OS2.mp3
Gena opens the software and creates a code plug with just one analog repeater keeping it simple to get started.

003_GD-77S_OS2.mp3
Incomplete! Gena opens GB3PP using the GD-77S.

004_GD-77S_OS2..mp3
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..

005_GD-77S_OS2.mp3
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.

006_GD-77S_OS2.mp3
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:

demo4-v1.dat
Minimal entries: GB3PP TG 91 WW TG 9999 Echo and TG 4000 Unlink.

Demo6-v1.dat
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:
http://www.dlee.org/dmr/

Radioddity software download.
https://radioddity.myshopify.com/blogs/all/gd-77s-update-software-v1-1-10

Brandmeister UK, includes a link to get registered
http://www.bm-dmr.uk/dash/

Phoenix UK
http://www.dmr-uk.net/index.php/phoenix/

Open DMR, Phoenix UK and Europe DMR network
https://www.opendmr.net

Northern DMR Cluster
https://www.northerndmrcluster.com/talkgroups.html 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
https://www.youtube.com/watch?v=3BPsLLChhlE

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

Disclaimer:

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.

Enjoy!

Gena

Call: M0EBP
DMR ID: 2346259
Loc: IO83PS
73

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:

http://www.n3fjp.com/aclog.html

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