Questions tagged [software]

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

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5
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3answers
2k 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 ...
0
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0answers
30 views

I'm trying to configure HRD for IC7300 but cannot connect / detect frequency

Got the firmware updated. Got the Driver updated. Got the software updated. Went through instructions several times.
8
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1answer
4k views

What does TX/RX Exchange refer to?

I am using the Aether logging software and it has two fields I do not understand: TX Exchange and RX Exchange. I know TX and RX refer to transmit and receive, but I'm not sure what to populate in ...
3
votes
2answers
2k 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 ...
2
votes
3answers
102 views

Store and forward system like voicemail for hams

I want to be able to get in touch with hams in my area when we are not both on air at the same time, but are close enough to each other for VHF communication. I want to be able to use my radio to call ...
3
votes
2answers
579 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), ...
0
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1answer
46 views

How to get the “real” number of samples coming in an sdr

so I am fairly new to this SDR and dsp thing, I am working on a project that calculates the ppm and adjusts the offset, now I kinda got the idea of how to calculate the ppm after going through the ...
4
votes
2answers
324 views

Problem with sample rate

So I am working on a project that involves me to check real time difference between samples.I am fairly new to this so after a bit of researching I wrote a simple python script for it, here is the ...
0
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2answers
49 views

Not able to understand some operations in rtlsdr library in python

Here is the part of the program I am having problems with: samples = sdr.read_samples(16*1024) power, _ = mlab.psd(samples, NFFT=1024, Fs=sdr.sample_rate /1e6) ...
3
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0answers
62 views

Any tool for finding satellite passes that overlap *two* given locations?

gpredict is nice. Well, it's OK, to find the next passes for a set of satellites with sufficient elevation for one location. What I want is something where I can put in two coordinates, and get out ...
4
votes
1answer
97 views

Why is Echolink copying the exe file to another drive letter everytime I launch it?

I have Echolink 2.0.908 installed in the default folder C:\Program Files (x86)\K1RFD\EchoLink Every time I click on the shortcut to launch it, a copy of echolink.exe is created in the root of my G:...
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0answers
63 views

RS41 weather balloon unable to decode data

Some times ago I tried to decode the signal from a weather radiosonde (RS41) passing in my area using a cheap RTL SDR (using both standard antenna and a home-made one, with similar result). The ...
3
votes
1answer
131 views

Open source RS41 decoder

I would like to decode the signal from a RS41 radiosonde (from a weather balloon), which are suggested open-source software to do that? I tried RS but after compiling the code and executing ...
5
votes
2answers
138 views

Calculating satellite passes without an internet tracker?

Situation: You want to know when a satellite will pass in order to receive an image transmission or to work an amateur satellite. However, you cannot access internet for whatever reason, and ...
0
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1answer
95 views

Does the 450D work with Winlink and allow Winlink to control changing frequencies and bands?

Will the 450D computer control program interface with Winlink and allow Winlink to change radio frequencies/bands?
8
votes
1answer
224 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 ...
1
vote
1answer
77 views

How do you open ax.25 ports?

I'm trying to follow this tutorial I almost got to the end, about 9:15 was where I got stuck. Right about there, the speaker is about to wrap up- but I get a couple error messages. ...
1
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0answers
119 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 ...
5
votes
2answers
7k 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 ...
3
votes
4answers
317 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 ...
5
votes
1answer
326 views

What dot means in JTDX FT8 received messages?

What dot near country means in JTDX? Maybe LOTW?
3
votes
2answers
254 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 ...
1
vote
0answers
76 views

HF propagation prediction using machine learning

Anyone out there know of or developed s/w to predict HF conditions using ML?
2
votes
1answer
62 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
votes
1answer
331 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 ...
5
votes
2answers
960 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 ...
5
votes
1answer
1k 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....
3
votes
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 ...
4
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0answers
62 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-...
2
votes
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. ...
3
votes
2answers
2k 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?
1
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0answers
103 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
votes
3answers
992 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 ...
3
votes
2answers
362 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 ...
1
vote
1answer
190 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: ...
1
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0answers
94 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. ...
3
votes
2answers
1k 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 ...
1
vote
3answers
10k 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 ...
1
vote
0answers
162 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 ...
12
votes
3answers
557 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 ...
9
votes
2answers
400 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
vote
2answers
142 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
votes
1answer
432 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
vote
1answer
1k 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 ...
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
votes
3answers
6k 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 ...
0
votes
1answer
145 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 ...
2
votes
1answer
365 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 ...
1
vote
1answer
340 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 ...
3
votes
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 ...