12

I believe you have encountered a Part 15 radio station. United States Code of Federal Regulations, Title 47, Part 15 (47 CFR 15) covers such things as garage door openers and the like. As such, and due to the fact that they are unlicensed by definition, there is no station-identification requirement. Note that this section covers both intentional and ...


8

Xastir is most likely what you want. http://xastir.org/index.php/Major_Features#SUPPORTED_TNC.27s:_DARN_NEAR_EVERYTHING.21 YACC - Yet Another APRS Client is also a newer choice. I have not personally tried it. http://www.ka2ddo.org/ka2ddo/YAAC.html


8

You can find the code in packjt77.f90. Callsign encoding (for "standard" callsigns that don't require hashing) is in function pack28. A quick summary: Adjust a few strange prefixes that don't follow the usual arrangement of letters and numbers. Swaziland 3DA0* will be encoded as if it was 3D0* instead, and Guinea 3XA1A will be encoded as if it was ...


7

If you would like to decode Morse code with an existing program: My personal recommendation is Fldigi, which is a software modem that runs on most major operating systems, including Windows and Linux. Fldigi has a modem for "CW" (Continuous Wave), which can both send and receive Morse code. The program uses your sound card to communicate with your radio. To ...


7

It's intended for contest logging. Most contests require that you "exchange" some information. Sometimes it's as simple as an RST signal report and you'd just enter whatever signal report you gave an received, other contests require a serial number (you send "1" to your first contact and increment that by one each time, so that each contact gets a unique ...


6

The aprs.fi passwords can not be used when logging in to the APRS-IS servers. aprs.fi and APRS-IS are two different things. The APRS-IS network consists of roughly a hundred servers distributed around the world, run by a large team of volunteer server operators. APRS-IS requires the use of the passcode number for logging in and sending data to the APRS-IS ...


6

That is something that is activated by "Show DXCC entity and worked before status" (selectable on the "Settings" > "General tab"). From the manual: When this option is checked WSJT-X appends some additional information to all CQ messages displayed in the Band Activity window. The name of the DXCC entity is shown, abbreviated if necessary. Your “worked ...


5

This is standard NMEA data format. The GPS is configured to provide the following NMEA strings: GPGGA, Essential fix data, time, location, quality of fix, altitude GPGSA, Dilution of precision and active satellites GPRMC, Recommended minimum data: position, velocity, vector, time GPVTG, Velocity and vector You'll notice much of the information is ...


5

The "HTML5"-compatible (not using Java applets) audio interface for WebSDR uses audio samples streamed over a WebSocket connection — this can be seen from the JS client files it downloads. However, the author of WebSDR has indicated that they do not wish the software used in ways other than via the provided web client (in their FAQ and even in a comment in ...


5

fldigi is multi-platform and will decode many digital modes and has some rig control features available. Check at http://www.w1hkj.com/Fldigi.html for more information.


5

What you describe is Software Defined Radio! Hurray! So, everyone having read my answers knows: I'm a GNU Radio fanboy. GNU Radio has to be understood as the Free&Open-Source LEGO of Software-Defined Radio: It comes with a huge library of signal processing blocks, which one can combine to build complex applications. Itself, it's not a library to be ...


5

Xastir isn't bad at all but I recently encountered something called YAAC (Yet Another APRS Client). On it's site it states the following: YAAC can be used as a stand-alone APRS client, an APRS RF-Internet gateway (I-Gate), or as a AX.25 digipeater. It supports 16 different data reporting views as delivered, and can be extended with user-written "...


5

Found on the JTDX groups.io (link won't work without login, unfortunately): sybmol • - this operator loaded his log into LoTW symbol ° - this operator loaded his log into LoTW and this is Hint decode (FT8 AP or matched filter based decoder in JT65 JT9 T10 modes) symbol * - Hint decode (FT8 AP or matched filter based decoder in JT65 JT9 T10 modes) So ...


5

It seems that FreeDV encodes the input audio signal in both the frequency and time domains, which means that the output signal amplitude doesn't follow the input signal amplitude, but rather the output level from FreeDV is always high, even with no input audio. Nah, that's not really the case. FreeDV uses a multicarrier scheme with 14 orthogonal carriers. ...


4

How about the software made by Baofeng for the UV-5R? http://www.miklor.com/uv5r/UV5R-Software.php I have used it and works fine when you figure out how to put it into English mode. The instructions for that are on the link, in the middle of the page.


4

You could use Aprx or Direwolf and configure the client as a Receive-only iGate. You can then assist in sending some directly received data to APRS-IS (the Internet side of APRS) and see the data appear on sites like www.aprs.fi You will need a password to be able to log to aprsis but this is trivial once you have a callsign and google for aprs password ...


4

I've used CQRLOG which is built on MySQL but otherwise has many of the same features as other loggers and is fully customizable. If that's too much and you're looking for a simpler solution, Xlog is a barebones logger that can still interchange data with some of the Linux PSK and other digital mode software. Both support all the popular export formats, ...


4

Nearly any SSB HF rig will do. You need some way to get audio out of the receiver and into your computer, and out of your computer and into the transmitter. Most modern transceivers provide some kind of connection for this. In a pinch, you can use the headphone and microphone connections. It's also convenient (through not necessary) if Fldigi can key the ...


4

To get a passcode for the APRS-IS on APRSdroid you do not necessarily have to contact the APRSdroid Developer team. You can use any one of several APRS-IS passcode generators available on the web as web based or Windows based applications . Just enter your callsign, press enter and a APRSIS passcode will appear with which you can login to the APRS-IS in ...


4

I just wrote you one. One of the things Gpredict can do is control antenna rotators (via the hamlib driver library). In this case, you're the rotator, but hamlib can't handle that (as far as I know), so instead we'll use a program that pretends to be hamlib (more precisely, pretends to be rotctld). Setup instructions (I'm going to assume you're on a unixy ...


3

All you need to do this is the following components: A radio to transmit the message. It doesn't have to be the same model as the HTs you want to receive the signal. In fact, it might be overall simpler and cheaper to choose a radio which has a built-in computer interface. A “sound card” for your computer. It is possible to connect your computer's main ...


3

Predict is the option that comes to mind. It is console based (no GUI), and provides a server mode where you can request data via UDP messages to a running predict server. It uses hamlib for rotor control. N.B.: predict does not provide transceiver control. You can get the current Doppler (normalized to 100MHz) via UDP queries, so you will need some extra ...


3

No the UV-5R does have a programming cable but it does not do any more that retrieve/store information to the radio. It is possible to build a small device that will listen to the audio output of the radio, send audio to the radio and enable transmit. This however won't allow you to change the frequency on the radio, or any settings "live" to accomplish what ...


3

MultiPSK will decode most of those, however AX25 itself is not a modulation scheme, it works at the data link layer, and doesn't specify the physical layer. More importantly, other applications go on top of AX25 so decoding AX25 by itself isn't that useful. While many "all-in-one" programs like MultiPSK exist, you may find better results with individual ...


3

The footprint calculated by gpredict (and other satellite tracking software) is the area from which the satellite appears above de horizon (or, equivalently, the patch of earth seen from the satellite). This is independent of any radio link the satellite may possess. So the answer is no. You cannot modify footprints on gpredict. This has nothing to do with ...


3

I had the exact same issue on the MD390 and it took some very frustrating attempts to make it work. Turns out its just that the software is just doesn't have an intuitive UI. Hopefully this will help you with your MD380, which I understand to be the same radio but without the waterproofing. Make sure you have the correct options set in the very first ...


3

Set your "New Call" to one color and your "CQ in message" to a different color. My new call CQs are green and my "CQ in message" are light red. The light red indicates that I have worked the station before because it is not a "New Call". And as Chris said, JTAlert also works. The logic is that the combination of "New Call" and "CQ Only" result in New Call ...


3

I've used this one several times. added: Go to the graphic under: Surface Elevation Tool. Scroll (zoom out to speed things up) OR use the search to get to your geographic area. Search somewhat reliably recognizes town,state names and zip codes. Zoom into and Click on a location to drop a balloon. Zoom out and scroll to other location - zoom in and click ...


3

Google Earth Pro (now free. $0) has a Viewshed tool. "A viewshed is the geographical area that is visible from a location. It includes all surrounding points that are in line-of-sight with that location and excludes points that are beyond the horizon or obstructed by terrain and other features (e.g., buildings, trees)." --Wikipedia https://support.google....


3

MultiScan 3B works fine in terms of decoding. This being said I had some issues making it work with my external sound card for transmitting SSTV. For some reason transmitted images turned out to be cropped. I accidentally figured this out using cqsstv.com. Eventually I ended up using a Linux laptop and QSSTV software. Still if you are interested only in ...


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