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Want to find out more about Slow Scan TV? See our SSTV – The Basics page

The most well-respected package for SSTV is MMSSTV, which is free from: hamsoft.ca/pages/mmsstv.php.

Sending an SSTV image using the MMSSTV application Images use around 3kHz of bandwidth and take between 1 and 2 minutes to download. Formats include Robot / Scottie and Martin.

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We recommend the Ham Radio Deluxe package for PSK31 – From version 6, you need to pay a fee to buy the software, but version 5.2 is still available (and legal) for free – Download Ham Radio Deluxe v5.2įor more on PSK, see our PSK31 – The Basics page Slow Scan TV.PSK31 using Digital Master on Ham Radio Deluxe This allows a two-way QSO, and typically uses macros for common phrases. Stands for Phase Shift Keying with a bandwidth of 31.25Hz. You can play with RTTY either using Ham Radio Deluxe, or the rather more complex MMTTY PSK31 A RTTY QSO on Ham Radio DeluxeA RTTY QSO on Ham Radio Deluxe Standing for Radio Teletype, this mode supports two-way QSOs – you type in real-time, and your message is displayed at the other station almost instantly. Want to work FT8? See our FT8 – The Basics page.Want to work JT65? See our What is JT65? page.

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Keep your PC clock in sync with Dimension 4 A QSO with Japan on JT65 Messages are typically 13 characters long, and go something like this: “CQ with location, Reply with location, RST, RST, Report Received, 73, 73”Īs with WSPR, the PC clock must be spot on. The newer FT8 is faster (an “over” every 15 seconds) These modes allow sending short messages. To avoid splatter with other transmissions, keep the power low (max 25 watts). These modes are a little like WSPR, but they allow a two-way exchange. Want to give WSPR a try? See Getting Started with WSPR JT65 / JT9/FT8

Check how far out your signal is reaching on WSPR Net:.

Keep your PC clock in sync with Dimension 4.

Download the WSPR software, free from /pulsar/K1JT.

You send out, over the course of a minute, a data signal containing your location and callsign, and can then check online which stations received your signal. You also need to make sure that your radio is not activating the ALC (Automatic level control) as this can alter the quality of the data being sent. You may need to adjust the soundcard output volume, or the transmit level from the Interface. Level from the computer: You need to make sure that the audio leaving the computer is of the correct volume (and not distorting).

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Software will have an “ideal” range, and you should hit this You may need to adjust the soundcard volume, input volume on the software, or the level from the Interface. Level into computer: Make sure that the software is getting the right audio level from the computer. The key to working data modes is to get the audio levels to and from the computer to be ideal: Your computer’s audio soundcard does much of the work. Connectivity – Make sure that your Interface is suitable to connect to your radio, and get the correct leadsĪll of the data modes we’re covering here rely on audio being sent and received over-the-air.CW – If you’re looking to use your computer to send and receive Morse, check that your Interface supports CW.It also needs to support the baud rate used by the data mode in question DATA – Your Interface needs to be able to handle data transfer and balancing the audio levels between the radio and computer.PTT – This means that your computer can use the Interface to get your radio to transmit.CAT – Computer Aided Tuning… these allow your computer to change the frequencies and settings on your radio.There are various types of Interface, and it’s important to get the right one for the job.

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A Data Interface: The Digimaster Pro CAT Interface box The Interface is the device that connects between your radio and the computer.

The right frequencies – Each mode typically has a dedicated frequency for each band.Software – There are various different packages depending on what mode you want to work.A computer with a soundcard (mic and speaker sockets).Cables to connect between the computer, radio and the Interface.Here’s what you’ll need to get started with amateur radio data modes: Electronic logging is often very easy with data modes.Helps with language barriers for non-English speakers.

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Here’s a summary of the basics on how to start out operating the amateur radio digital modes. On this page, we look at what the various amateur radio data modes offer, and how to get started using data. Working amateurs around the world using data is a fascinating part of the ham radio hobby, and is definitely worth considering.