Questions tagged [software]

Programs and applications that are used to assist with Amateur Radio operations.

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67 views

Frequency synchronization in GNU Radio for OFDM 16-QAM x 6

I am transmitting a 16khz data signal using OFDM 16-QAM x 6 carriers and the library amodem using a HackRF. However, I am having issues receiving this signal as the frequency the HackRF transmits on ...
3
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1answer
199 views

Are there any “parrot” repeater software projects out there?

I happened across a discussion on building repeaters for Amateur radio, which lead to looking at GMRS repeaters (because apparently this is a potential source for inexpensive 70 cm Amateur repeaters), ...
7
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1answer
89 views

FT8 callsign/maidenhead compression encoding

I have set myself a challenge to write a Matlab script as proof of concept to send an FT8 CQ call (not necessarily for live transmissions yet, but I may extend the project). So far I have: Generated ...
3
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4answers
220 views

Is there a freely accessible repeater database?

The well-known repeater listings/apps don't provide a database that you can download and use freely for any use in building your own app. Is there a such a freely accessible repeater listing database ...
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0answers
64 views

HF propagation prediction using machine learning

Anyone out there know of or developed s/w to predict HF conditions using ML?
2
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1answer
53 views

Is there a way to get FreeDV output level to follow the input audio amplitude?

I'm using a commonly available imbedded firmware implementation of FreeDV with an SSB HF transceiver. It seems that FreeDV encodes the input audio signal in both the frequency and time domains, ...
2
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1answer
139 views

QSSTV on Linux Mint

Linux Mint MATE 64 (system is up to date) I installed qsstv first it runs normally but no CAT .. then I installed hamlib and put in the same string for the USB Device like in FlDigi which runs now ...
3
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2answers
159 views

How do blind hams operate?

In an earlier question, there seemed to be some surprise when I (indirectly) asked about radio modes accessible to a blind operator. First question: So how do blind hams operate? If I were to be ...
5
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1answer
171 views

What dot means in JTDX FT8 received messages?

What dot near country means in JTDX? Maybe LOTW?
3
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0answers
46 views

What value goes in the AX.25 PID field if the Layer 3 protocol is not defined in the standard?

I am working on space-ground networking for a Cube Satellite, and one of our candidate Layer 2 protocols is AX.25. We haven't settled on a physical layer, but it's likely to be some form of quadrature-...
4
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2answers
742 views

How can I decode SSTV with only macOS software?

Have you used an SSTV decoding application on an up-to-date version of macOS? Which one, and if you built from source, can you share the steps you took to do so? I do not know of a single working ...
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0answers
57 views

Looking for a formula used by VE6YP trap calculator

I wonder whether the source code of VE6YP (Tony Field) coaxtrap design program (link 1, link 2) was ever published or described. As a Mac user I'm having little difficulties using this software and I ...
3
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3answers
212 views

Line of sight from geographic/map data?

I have line of sight issues with repeaters I want/need to use (it's a repeater network my club uses). One of the options that might be available to me is to install a "passive repeater" in a location ...
1
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1answer
144 views

ax.25 error shown in direwolf. Fails on channel 8, then 2, then works

Using a Raspberry Pi 3B, Signalink, HT, direwolf and ax25-tools and ax15-apps. All up to date. Clean start. Commands: ...
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0answers
80 views

unexpected output using HackRF One with rx_power

I am trying to make a wide scan from 24M to 1700M using HackRF One by using: rx_power -f 24M:1700M:1000k -g 50 data.csv This gives me a nice output like this. ...
2
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1answer
980 views

WSJT-X V2: How to identify stations already logged?

In V1.9 of WSJT-X, there was a feature that allowed one to change the color of stations already logged. This was necessary in knowing whether or not to respond to a given CQ. In version 2, I am ...
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0answers
129 views

AWR_4000 by awc programming software [closed]

Ware can I find the programming software for this radio It's cold awr advantage programming software for the 4000 4002 anyone know or has a copy of it to send on email to Mr ouly of you can email me ...
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2answers
357 views

What does exclamation mark mean in FT8 CQ calls in WSJT?

For example, in this screenshot: WSJT shows !Italy, !Serbia, !U.S.A. What does it mean?
1
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2answers
132 views

Linkable lists of call signs in a specific zip code

I've been trying to build a ham related website. I'm looking for a list of call signs. Here's the trick: I need the URL to change based on the zip code. I want to be able to put the link on a page, ...
0
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1answer
371 views

Alternative software for Hytera PD785G

I got a brand new Hytera PD785G. When I turn it on, it says that it needs to be programmed. I've got a USB programmer cable and I know that there are official drivers and software for download. Do I ...
1
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1answer
952 views

How do I install the DV4mini software on Ubuntu?

The documentation says the following: The program requires the complete installation of Mono. You install for example with apt-get the packet mono-complete. Until an installation packet is available ...
11
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3answers
510 views

Resort FM radio station

I stayed at a resort in the U.S. recently that is located in an unpopulated area with virtually no radio reception. To fill the gap, the resort has its own FM station that can be heard only within ...
2
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3answers
1k views

How to use a Linux computer as a paddle key code practice oscillator

I'm working on learning Morse code, and I'm looking for a way to use my computer as a practice oscillator with a double paddle key. I'm using a Linux PC, but a Raspberry Pi solution would be cool to. ...
4
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1answer
935 views

AX.25 on macOS (aside from APRS)

I'd like to send raw AX.25 packets from a macOS PC using a KISS TNC (mobilinkd TNC2). I've sent APRS packets with this set up using Xastir, but I'd like to send other information besides just APRS (i....
1
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1answer
297 views

How to use Log4OM with multiple users?

My household has multiple licensed amateur radio operators that share the equipment (ham radio, computer, etc). We would like to use Log4OM to log our QSQs and to use the program to submit them to ...
2
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1answer
1k views

How do I go about identifying an unknown digital signal?

I'm playing around with an SDRPlay. I'm using the CubicSDR app, and I'm tuning around the HF bands. I get to 5.650 MHz and I see this: This looks like a bunch of discrete RTTY signals. How would I ...
1
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1answer
72 views

WIFI PACKETS AMPLITUDE AND DISTORTION [closed]

How is it that a computer receiving packets through wifi doesn't get those wifi packets distorted often? Wouldn't things like other radio waves interfere with the signal often? How does my computers ...
1
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3answers
7k views

Tytera MD-380 software (DMR radio software) not working on Windows 10

I installed the latest MD-380 software (from Radioddity) , but I cannot get the MD-380 software to work on Windows 10. When I plug the MD-380 USB programming cable in my Surface Book (obviously ...
5
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2answers
835 views

4NEC2 - Radiat-eff. vs. Radiat-power

In the output from 4NEC2 the input power is 100 W. On the left, in blue text, is Radiat-eff. which equals 15.41%. On the right is Radiat-power which equals 94.88 W. I would expect either the first ...
1
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1answer
131 views

Can one modify footprints in Gpredict?

I have created a TLE to represent my theoretical satellite whose orbit I wish to plot using Gpredict. I have managed to load it all up onto the program and it is looking good, but one thing remains - ...
3
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3answers
1k views

Open Source Library for Digital Mode

I want to play a bit more with programming side of digital modes. However, a quick Google search turned up lots of software and some general explanations but no open-source library implementing such a ...
2
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2answers
180 views

Contact Logging Software and Geospatial Mapping

Does anyone know of software and/or techniques to effectively and efficiently to: Merge contact logging with displaying location information on a digital map; e.g. Google Earth/Map I would like to be ...
3
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2answers
324 views

How to read ID-51A GPS logger data

I own the original Icom ID-51A. I have the GPS logger logging every 5 seconds to the microSD card. How do I view this saved track data on my computer? For reference, here's one of my logs (I know ...
0
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1answer
142 views

Is there a satellite tracking software with S-band downlink

we are trying to track "DTUsat-2" which transmit at 2.402 GHz using automatic frequency adjustment to compensate for Doppler shift. Our receiver ( a professional one) have the ability to set frequency ...
1
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1answer
146 views

Track cubesat with webSDR, is is feasible?

WebSDR is a Software-Defined Radio receiver connected to the internet. Here is being said "OK for HF but no good for VHF / UHF". I was thinking to use it for cubesat reception but given that the ...
1
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2answers
263 views

Software TNC's for Linux? (targeted to BPSK1200)

Are there any software TNC's (like SoundModem) for Linux? This is limited to the ones which deal with BPSK1200 (used by cubesat projects). For some cases Warbler will suffice.
2
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1answer
332 views

Can HDSDR perform the work of Direwolf?

I have a setup in which Direwolf is used in conjunction with a Baofeng radio to basically send data (AFSK). My app connects to the TCP server provided by Direwolf, send him some data which then is ...
2
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1answer
192 views

Is there an audio feature for Gpredict?

I am trying to learn about how to talk to satellites and the ARISS via ham radio. What I am wondering is if there is an audio feature I can access for the azimuth. In the sun, I cannot really see the ...
3
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2answers
1k views

How can I send a voice message from my PC to HT radios?

I would like to know how to transmit a voice message from my PC by software, to my HT radios at a specific channel. My radios are Baofeng BF-A5. Do you know of software to deal with it?
5
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2answers
5k views

Do aprs.fi and APRS-IS use the same credentials?

I have an account/profile on aprs.fi, and now I am trying to use APRSdroid, which requested my credentials. Can I use the password from aprs.fi for it? I am unable to register/submit my application ...
3
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2answers
1k views

What rig should I start with when trying to get hands-on experience with Fldigi?

I would like to get hands-on experience with Fldigi. What setup is recommendable?
4
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1answer
2k views

Command-line satellite tracking software

Is there any software similar to Gpredict but which can be used without a GUI and can control rotor Az/EL and radio doppler shift? I'm using Linux in particular, especially Ubuntu 14.04. Currently, I ...
5
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2answers
6k views

HT programming software alternative to Chirp and RT-Systems

I have been using Chirp to try to program my Baofeng UV-5R but have been having one problem after another. I was wondering if there was an alternative to Chirp and RT-Systems programming software for ...
1
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1answer
141 views

International Broadcast - database programs? [closed]

In my search to identify the stations I can (barely) hear on my small shortwave setup, I discovered the HFCC. They have a tool that takes your location and UTC time, and provides a list of stations ...
3
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2answers
890 views

Linux APRS client

I have an old PK-232 packet TNC which is spitting out APRS data from 144.390 to the serial port. I have confirmed this with minicom and see all sorts of data with lat long etc. I would like to view ...
6
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2answers
2k views

What protocol or API does WebSDR use to stream audio?

What documented protocol or API does WebSDR use to stream audio over the internet? I'm interested in capturing a WebSDR audio stream using a small embedded device which has lots of audio DSP ...
2
votes
1answer
3k views

Decoding the Morse code

I am using a crystal to transmit morse codes, and I am using Kenwood radio receiver to obtain the signal. It receives the signal with a lot of noise, though we can figure out the morse code sound. I ...
6
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3answers
4k views

Is there any PC remote control software for the Baofeng UV-5RE Plus?

I saw on YouTube that some software, with another brand transceiver, can command the transceiver to scan a range of frequencies and display a running waterfall display of scanned results. Can such a ...
3
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2answers
788 views

Some softwares that can decode CW, AX25, RTTY, PSK etc [closed]

What are some softwares that can decode CW, AX25, RTTY, PSK etc? Hope that the softwares provided are freeware or open source.
2
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1answer
688 views

Is there a rtl-sdr wrapper for the funcube dongle?

I would like to use some software packages, such as rtl_433, that are written with the RTL-SDR library with a FUNcube Dongle instead. Is there a wrapper that would allow the FUNcube Dongle to be used ...