For information of glSDR and the servers, use the About menu.
The first client that connects to a server is in master mode, and has control over the vfo and other controls so that it can tune and change bands and frequency etc. Subsequent client connections will be put in slave mode where the slave clients can only listen to the audio and watch the spectrum and waterfall in passive mode. When the master disconnects, the next slave in line will become the new master. When there are many simultaneous clients, the network bandwidth may be exceeded and some slaves will not have audio. You can see the master/slave status of your connection in the Title bar.
There is automatic Rx IQ Correction that you can enable/disable via the DSP tab. Note that you should enable Rx IQ Correction only for servers connected to IQ based SDR hardware (eg Softrock, UHFSDR), but NOT for direct sampling hardware (eg Perseus).
It has better display for high bandwidth servers. These servers have sampling rates of 480 ksps or more thus the spectrum/waterfall displays a wide bandwidth.
Minimum of Ver 8 is needed for new versions of servers with a revamped Local Oscillator Offset mechanism.
Ver 9 has spectrum/waterfall zoom feature. Use pinch motion to zoom/unzoom. I have found it easier to put one finger in a fixed position, and then zoom/unzoom by moving the other finger.
Ver 10 has improved drag tuning taking into account the zoom factor.
Ver 11 has been tweaked for backward compatibility with Android 2.2 devices.
Ver 12 has Spectrum Averaging options and also one FMN filter at 80khz for listening to Wide Band FM Broadcasts.
Ver 13 has more Spectrum Averaging levels.
glSDR has TRANSMIT capability in voice modes, ie SSB, AM, NBFM etc. However, you need to supply the User and Password to enable transmit when connecting to a password protected server (ie ALL the public online servers). Also, it requires that your device is capable of MIC input at 8khz sampling rate. DO NOT install this version if your device is not compatible !!!
Version 25 has FILTER MENU updated swhen MODE changes. The zoom action is also magnified when unzoomed or at low zoom so that you can zoom "faster" initially.
Version 26 has been tweaked to support Adreno GPU based devices by working around some issues with 24 bit color transparent overlay surfaces in Adreno driver.
Version 27 has the waterfall initialized correctly.
Version 28 has bugfix for band specific frequency after changing from a slave connection to a master connection.
Version 29 has a customized View of the FILTER MENU to indicated the currently selected Filter.
Version 30 has a customized View of the SERVER MENU to indicated the currently selected Server.
Version 31 has an easier to understand error message when a Server is unavailable.
Version 33 has a MASTER menu button that can take over a server as the master connection, provided you have the User/Password set for the server. The User/Password is usually known only to the server owner.
Version 35 has minor bug fixes and a new MENU option for the arrow keys.
Version 36 fixes the bug when a blank Frequency is entered.
Version 38 has a MENU item for users to donate bitcoins to the project.
Version 39 has a DSP checkbox for RX DC Block. This eliminates or reduces the central spike in some radios from differential in the DC potential of the I and Q channels.
Version 40 has a "Donate Bitcoin" menu item for you to support this project. The bitcoins donated will go towards improving the number and quality of the backend servers and service quality.
Version 41 has improved stability to prevent crashes on fast rotation of screen orientation.
If you like space or astronomy, you will like this ISS locator app.
ISS Detector will tell you when and where to look for the International Space Station or Iridium flares. You get an alarm a few minutes before a pass. You will never miss a pass of the International Space Station and you will never miss the bright flashes of the iridium communication satellites. ISS Detector will also check if the weather conditions are right. A clear sky is perfect for spotting.
Extensions will enhance the functionality of ISS Detector. With an in-app purchase you can add comets and planets, amateur radio satellites and famous objects, like the Hubble space telescope or the Chinese space station Tiangong.
• Overview of the coming passes
• Weather conditions for perfect sightings
• Radar screen with path indication
• Current location on a map
• Detection of Iridium flares
• Notifications and Alarms
• Share sightings with whatsapp, twitter, gmail, email etc.
• Automatic location and timezone detection
• Dedicated tablet layout
Available Extensions (in-app purchase):
Radio Amateur Satellites
Track dozens of ham and weather satellites
Track Hubble, X-37B, Fitsat, Tiangong and more
Comets and Planets
Track comets as they come closer to earth. Perfect for C/2011 L4 Panstarrs in March 2013 or C/2012 S1 ISON in November 2013.
Enable ISS Detector to display the positions of the planets on the radar view.
ISS Detector combines data from Nasa, Heavens-above.com, minorplanetcenter.net and weather from yr.no.
Run sample tests from the latest Technician, General and Extra question pools.
Keeps track of the questions you have mastered with a passing of 74% or better.
Study question elements that need work.
Free and not Ad supported. All questions are provided for free.
Practice exams comply with the rules for generating an actual exam.
Includes The most recent Question Pools
Element 2, Technician Class. Effective July 1, 2014 to June 30, 2018.
Element 3, General Class. Effective July 1, 2011 to June 30, 2015. Default General Class
Element 3, General Class. Effective July 1, 2015 to June 30, 2019. Selectable from the settings menu.
Element 4, Extra Class. Effective July 1, 2012 to June 30, 2016.
App covers all the topics of this popular software title (available separately, see details within app) used in schools and colleges worldwide for over twenty years and now available as a tablet and smartphone App.
App Features : -Extensive table of contents with drop down menu topic navigation - graphics updated for every user change – no blank screens - default and example values with auto fill - unrestricted inputs for any textbook values – a unique portable standalone education tool or can be combined with any school text book - optional display calculations - explanatory text for every topic – smartphone technology encourages students to spend more time studying than with a traditional textbook.
Learning by doing approach to study, encouraging both experimentation and exploration of the subject.
We love ham/amateur radio just like you do, and, as ARRL VEC (Volunteer Exam Coordinators) ourselves, take pleasure in helping others learn the material and pass their exams.
Yes! Five by Five will help you prepare for any or all of your FCC Amateur Radio Technician, General, and/or Extra Exams.
Yes! The software is a purchase, not a license. Buy it once, and use it for life!
Yes! All charts and figures that you'll need to reference are included.
Yes! There is a built-in update to help you ensure that you have the latest questions (don't trust the many out of date test banks floating out on the web!)
Yes! There are numerous useful study and learning modes.
Yes! Thousands of people have used our products to quickly and efficiently prepare for their tests
Yes! You can be next.
Please note that this app is intended to teach you the questions and answers in the shortest amount of time. EXPLANATIONS TO THE QUESTIONS ARE NOT PROVIDED. However, most users don't need them - hundreds of people have used our apps, as is, to prepare for the tests. The advantage of our app over others is our fast interface which can save you up to dozens of hours over the study process!
"I took my Tech test today and I couldn't believe that every question and answer looked very familiar. I was totally prepared for the test by using your app. I completed the test in a very few minutes, my confidence grew with each question that I saw because I had seen them all before!" - JW
"Your program got me here with ease. You have a wonderful program and I would tell anyone that this would be the way to go. I have such confidence that even the next day I am studying for the "General" class. Thanks fellows!" - CM
"Want to say what a pleasure it was to use the [Five by Five] Ham FCC test preparation .. I used it to pass the Technician - General - and yesterday the Extra. Without the help of this software I would not have had a chance obtaining any of these pass results.. A big thank you and may you continue to successfully create such clever so easy to use - wonderful software." - AS
for more quotes from real users of our materials, please see our homepage. This is a system that works! Why not get this great, easy to use app that actually saves you study time, has actual questions, and is easy to use.
Some satellites carry radio repeaters that can be used by amateur radio from the ground.
This application helps the amateur to know the real time position of these satellites.
It shows on the map the position of the satellite, semi circle representing the approximate coverage as well as the user's position.
You can switch from the menu the selected satellite.
From the menu visible passes shown a window with two buttons on the top.
Pressing the right (circular arrow) visible passes are calculated for the selected satellite within 24 hours.
Pressing the left (arrow circular dot in the center) visible passes are calculated for all satellites for the next 3 hours.
Clicking on one of the visible passes entered the 3D locator.
The locator uses accelerometer, the compass of the device and the calculated data to show the position of the satellite on sky from observer's position.
That is, when we moves the device to the sky shows a red triangle in the position of the satellite and a dotted line showing the pass.
The app calculates the orbits from the current time of the device and TLE data that www.celestrak.com obtained.
The internet is used to get the maps and update TLE data.
If you like the app you can make a donation to the developer from the menu extensions.
Option to manually include the TLE data in a file on the SDCard with satellites that the user wants is added.
For each satellite include 3 lines like these.
1 24792U 97020A 13350.44946552 .00000550 00000-0 18933-3 0 6234
2 24792 86.3985 133.2143 0002 005 108.3180 251.8234 14.34218916869917
From the preferences menu of the main screen mark the check
"TLE data from file in SD"
For now, this option is only available to donors users.
The first time you do not get frequency data automatically.
Frequency data from the window "visible passes"
In each satellite pass, if a letter F appears in blue,
When pressed frequency data for this satellite are deployed.
Data is obtained automatically the first time from:
If you want to update later will be done by checking
"Last updated Frequency data" in the preferences window.
"FCC Commercial Radio Operator" is a professional app to help you prepare for your written test for GROL, GMDSS, Ship Radar Endorsement, Radio Maintenance and/or Repair, or other commercial Operator FCC exams. Our questions are UP TO DATE and updated as soon as there are any changes.
This app includes:
* Element 1 - Basic Radio Law
Basic radio law and operating practice with which every maritime radio operator should be familiar. To pass, an examinee must correctly answer at least 18 out of 24 questions.
* Element 3 - General Radiotelephone
Electronic fundamentals and techniques required to adjust, repair, and maintain radio transmitters and receivers. To pass, an examinee must correctly answer 75 out of 100 questions.
* Element 6 - Advanced Radiotelegraph
Technical, legal, and other matters applicable to the operation of all classes of radiotelegraph stations. To pass, an examinee must correctly answer at least 75 out of 100 questions.
* Element 7 - GMDSS Radio Operating Practices
GMDSS radio operating procedures and practices sufficient to show detailed practical knowledge of the operation of all GMDSS sub-systems and equipment. The exam consists of questions from the following categories: general information, narrow-band direct-printing, INMARSAT, NAVTEX, digital selective calling, and survival craft. To pass, an examinee must correctly answer at least at least 75 out of 100 questions.
* Element 7R - Restricted GMDSS Practices
Restricted GMDSS Radio Operating Practices. Fifty questions concerning those GMDSS radio operating procedures and practices that are applicable to ship stations on vessels that sail exclusively in sea area A1, as defined in sections 80.1069 and 80.1081 of the Commission's Rules. To pass, an examinee must correctly answer at least 38 out of 50 questions.
* Element 8 - Ship Radar Techniques
Specialized theory and practice applicable to the proper installation, servicing, and maintenance of ship radar equipment in general use for marine navigation purposes. To pass, an examinee must correctly answer at least 38 out of 50 questions.
* Element 9 - GMDSS Radio Maintenance
GMDSS Radio Maintenance Practices and Procedures. Requirements set forth in IMO Assembly on Training for Radio Personnel (GMDSS), Annex 5 and IMO Assembly on Radio Maintenance Guidelines for the Global Maritime Distress and Safety System related to Sea Areas A3 and A4. The exam consists of questions from the following categories: radio system theory, amplifiers, power sources, troubleshooting, digital theory, and GMDSS equipment and regulations. To pass, an examinee must correctly answer at least 38 out of 50 questions.
FCC rules require that licensees of ship, aircraft, and international fixed public radiocommunication stations permit only persons holding the appropriate FCC-issued commercial operator license to perform specified transmitter operation, maintenance and repair duties. To obtain a new or upgraded FCC commercial operator license, you must pass an examination administered by one of the Commercial Operator License Examination Managers (COLEMs).
Run through various types of practice test to ensure that you'll be prepared!
* includes all actual and up to date questions
* intelligent learning mode and actual test mode
* all charts and figures included
* sound on/off option
* timer on/off option
* showing/hiding the correct answer
* statistic analysis of your learning progress
* questions and answers are sorted randomly
Please email email@example.com for any issues or suggestions
keywords: FCC, Ham Radio, Commercial Radio Operator
You can practice
or any combination of the above.
You can also select if you want to see or hear the morse codes, or both.
The concept of this app is to practice individual letters, not words or sentences.
Vibrate on mistakes.
StarTalk, from Curved Light Productions, is the first and only popular commercial radio program devoted to all things space and is hosted by renowned astrophysicist Neil deGrasse Tyson. As Director of the Hayden Planetarium at the American Museum of Natural History, Tyson makes regular appearances as the “nation’s expert on space” on major news programs and popular shows (Daily Show, Colbert Report).
Tyson’s writings (such as The Sky is Not the Limit: Adventures of an Urban Astrophysicist) and NOVA specials (Origins, and NOVA ScienceNOW) have already won him a faithful media following. His most recent book, Death by Black Hole and Other Cosmic Quandaries reached the New York Times Best Seller List. Tyson was named Time Magazine’s 100 Most Influential Persons in the World for 2007.
Amateur radio is also called ham radio in certain countries. It is a hobby and self-training. The term "amateur" is used to differentiate it from commercial and professional two-way radio services. Amateur radio operation in the United States is licensed by the Federal Communications Commission. In the United Kingdom by Ofcom. All countries are coordinated through the International Telecommunication Union. An estimated two million people throughout the world are regularly involved with amateur radio. (Wikipedia)
565+ Ham Radio Terminologies in a vast array of Multiple Choice Quizzes, Flash Cards, and a handy Android sized Dictionary for easy learning on the go.
* Keeps track of your accuracy and provides a report per character at the end of a lesson.
* Intuitive keyboard with all the characters covered in the lessons, including prosigns.
* Hear how the new character sounds before a session starts so you can prepare for the lesson.
* You can opt to keep track of results yourself on a piece of paper.
* Farnsworth timing so you can reduce the effective speed if you fall behind without breaking the character rhythm (aligned to ARRL recommendations that preserves spacing ratios).
* Option to play new characters more frequently (handy for learning new characters). New characters are also *guaranteed* to appear in the lesson.
* Option to play all characters with equal probability (handy for practising all characters).
* Includes 43 characters including letters, digits, punctuations and prosigns.
* Define your own custom Koch sequence. Note: Prosigns should be placed in angle brackets, eg. <SK>. Supported characters are displayed on the Help screen.
* Choose the session duration, which character is next in sequence, WPM, different tone frequencies and more.
* Help is available from the app menu.
* Free (ad-supported).
Feedback, Suggestions and Issues:
For any feedback, suggestions or issues, please email Byron at firstname.lastname@example.org.
* Internet and Network state: To display ads.
This app was designed for tablets and tested on a Nexus 7. Works on medium and higher resolution devices as well.
To view the best augmented reality experience, please install the app using the latest generation of Android devices.
This application provides following features:
* Access to up to date agenda (workshops, tracks, sessions, speeches, speakers, posters, )
* Easy access to conference’s key information (venue, accommodation, sponsors etc.)
* Built in conference’s venue maps, plans
* Offline functionality. Application does not required active Internet connection
* Conference news (delivered via Twitter)
* Integration with most popular conference management systems like EDAS, Conftool, OpenConf, Indico, Paperplaza, SoftConf, ePapers
* Ratings and comments to the sessions and papers
* Chat for participants to discuss sessions or papers
* Conference questionnaires that can be customized by organizations
Conference4me provides also information about exhibitions accompanying conferences.
* Built in exhibition maps, easy navigation
* Data about hundreds of exhibitors, their contacts, location on exhibition maps
* Voting for the best exhibitor
* easy search mechanism
And many more on organizers wish…
Over the last two years of our application benefited nearly 200 conference organizers (academic, commercial) around the world.
Full list of conferences you can find here http://conference4me.eu
- More features here: http://conference4me.eu/features
If you are planning to use a mobile app during your conference, please contact us: http://conference4me.eu/contact
- It needs full network access to download and update the conferences, news etc.
- It needs to add or modify calendar events in order to add B2Match meetings to user calendar, but only in case if user wants to
- It needs to read confidential information to allow user choose the calendar, where B2Match meetings will be added
- It needs hardware control in order to scan QR codes and barcodes
NEW 2015-2016 Edition
One for the Road... Now the best directory of frequencies for the 23,000+ Amateur Radio repeaters around the country is available to you…anytime…anywhere.
Containing the entire ARRL Repeater Directory and powered by TravelPlus you can now...
➢ Search for repeater data offline by city/state or coordinates. No Internet connection required! It’s ready and there when you need it!
➢ Find nearby repeaters based on your current location (location services must be enabled) and view detailed information.
➢ Locate repeaters on terrain-view maps (Google Play Services and Internet connection required for Google Maps).
➢ Filter repeater selections by frequency bands: 28, 50, 144, 222, 440, 900 and 1240 MHz plus ATV, D-STAR, APCO-25, DMR, EchoLink, IRLP
➢ Filter repeater selections by their attributes: Open repeaters only, repeaters with weather information, linked repeaters and ARES/RACES repeaters.
Simple, fast and easy to use… All just a touch away!
Copyright © 2015 by DHF Systems, LLC and The American Radio Relay League, Inc. All rights reserved.
Repeater Directory® is a registered trademark of The American Radio Relay League, Inc.
TravelPlus for Repeaters™ and TravelPlus™ are trademarks of DHF Systems, LLC.
All other trademarks are property of their respective holders.
To protect equipment owners, repeater locations and geocoded location data are approximations only. Directional information and location points displayed on maps DO NOT indicate actual repeater locations. This product is NOT designed for, nor is it intended to be used for locating or navigating to actual repeater sites.
The repeater listings that appear in the ARRL Repeater Directory® are based on information provided annually by volunteer repeater coordinators throughout the United States and Canada. If information about a repeater is not submitted to the ARRL, it is not published. If a repeater appears to have been omitted from an ARRL product, or if the information that does appear is incorrect, please contact the responsible repeater coordinator first. The complete list of coordinators is available at http://www.arrl.org/nfcc.
ATTENTION REPEATER OWNERS: If you discover an error in this edition of the ARRL Repeater Directory®, please do the following:
* Notify your repeater coordinator.
* Submit an update to the ARRL Repeater Information page on the Web at http://www.arrl.org/repeaters.
Data and repeater information has been obtained from a number of sources believed to be reliable. However, because of the possibility of human or mechanical errors either from these sources or inherent in the compiling of a database and program of this size, neither DHF Systems, LLC and The American Radio Relay League, Inc. are responsible for or assume liability for the accuracy, adequacy, completeness, errors or omissions in any maps, map data, repeater data, or any other data, information or imagery incorporated in this product, or the results obtained from the use of such information.
THIS SOFTWARE IS PROVIDED BY DHF SYSTEMS, LLC AND THE AMERICAN RADIO RELAY LEAGUE, INC. "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DHF SYSTEMS, LLC AND THE AMERICAN RADIO RELAY LEAGUE, INC. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.