(Version in Deutsch siehe hier)Built-in sound interfaces including CAT/PTT control via USB can be found in almost all modern shortwave transceivers today. In the vhf/uhf range, however, the situation is still quite different: here, mobile devices have at best a jack to connect an external interface for audio in/out and PTT. Even handheld radios usually …
Continue reading CM108/119-based soundinterface for (vhf/uhf) digimodes
This article describes the basic steps needed, to get the FreeDATA client up an running.
Some of you may know FreeDV, a Digital Voice mode for HF radio. This digital mode, based on Codec2, has been actively developed since 2012 by a team around David Rowe, VK5DGR. Less known, however, is that David has been actively working on the development of some HF datamodes since at least mid-2020, and these …
(english version of this article see here)Eingebaute Soundinterfaces incl. CAT/PTT-Steuerung über USB finden sich heute in nahezu allen modernen Kurzwellentransceivern. Im UKW-Bereich hingegen sieht das noch ganz anders aus: hier haben Mobilgeräte allenfalls eine Buchse, um ein externes Interface für Audio in/out und PTT anschließen zu können. Auch bei Handfunkgeräten muss i.d.R. eine externe Lösung …
Continue reading CM108/119-basiertes Soundinterface für (VHF/UHF) Digimodes
Pi-Star und auch WPSD enthalten jeweils ein integriertes Dienstprogramm, mit dem man den TX- und RX-Offset einstellen kann. Dieser Offset ist häufig bei günstigen MMDVM-Boards aus chinesischer Produktion erforderlich, da diese oft weniger frequenzgenaue Komponenten enthalten oder nicht (richtig) abgeglichen wurden. Viele dieser Boards werden zwar mit einer Notiz ausgeliefert, auf der ein einzustellender RX-/TX-Offset …
Continue reading Kalibrierung eines MMDVM-Boards für DMR (Pi-Star/WPSD)
Preface This is the updated version of my article series, started in early 2018. Winlink evolved further and meanwhile there are newer software modems for faster and more effective transmission available. This article should take these circumstances into account. Prerequisites PC running Windows (7 & up), Soundcard-Interface with CAT control or TRX with build-in soundcard …
In a previous post I described how to setup a Postoffice only Gateway using RMS Trimode and RMS Relay. In practice it has been shown that this combination seems to be unreliable sometimes. The following guide shows an alternative way to accomplish the same goal using BPQ32. Objective This article describes how to setup a …
Continue reading HowTo: Setup a Winlink RMS „Postoffice only“ Gateway with BPQ32
The Winlink system is designed to ensure basic email communications even in emergency situations. Testing in good times may build up knowledge and gives confidence in using it when it is really needed. So, for doing emcomm exercises it maybe helpful to have an own Radio Mail Server (RMS) Gateway. Objective This article describes how …
Continue reading HowTo: Setup a Winlink RMS “Postoffice only” Gateway with RMS Trimode
Winlink Express is now officially released in Version 1.5.17.0. This release also contains support for ARDOP and VARA TNC. Installed instances should get this via autoupdate; otherwise you can download the new version here. Because VARA is third-party software, please note that you will have to download and install this separately.
Roger Clark, VK3KYY, re-engineered the CPS and made it bug free. Masterpiece! GD-77 Re-engineered "Community" CPS
"What hath God wrought?" 