The results after twelve hours were quite astonishing. I fired up the latest version of WSJT-X which includes JT4, JT9, JT65, QRA64, ISCAT, MSK144, and WSPR at just after 09:00z, configured it for JT65 and JT9 reception, switched it to 20m and let it sit there receiving and uploading everything to pskreporter to produce the map below. In theory, I should be able to work any station I can hear using these modes. Rather than run WSPR for a day, I thought I’d spend twelve hours yesterday just receiving JT65 and JT9 signals on 20m. I’ve written about JT65 a lot, I couldn’t have completed my original QSO365 without using JT65 and I discussed JT9 here. This is where the low signal data modes come in, specifically JT65 and the newer JT9. Secondly, although WSPR is incredibly good at penetrating around the world, just because someone in (say) VK land heard your 200mW WSPR signal with a strength of -28dB, that doesn’t mean the band is properly open and that you can complete a QSO using SSB or CW. You transmitted and someone received you, that doesn’t necessarily make a QSO. I find it frustrating to hear people say “Oh, I had contacts all over the world yesterday on WSPR”. I accept that many years ago, some QSOs were made using WSPR but that was in the very early stages of development and I don’t believe that the software is there to actually facilitate that any more. I appreciate this will sound as though I’m knocking WSPR but trust me, I’m really not.įirstly, it’s not a QSO mode. Learn how to get the most from JT65 and JT9.WSPR is great, I enjoy running WSPR and seeing how far I can transmit using very low power but there are a couple of drawbacks.Set up your software and start making contacts!.Chances are, you own several items already. Pull together all the hardware and software you’ll need to get on the air with JT65 and JT9.Learn how these protocols work and the advantages they offer. You’ll learn how to make contacts, and also how to use these modes as tools to test your station and study HF propagation. Work the World with JT65 and JT9 shows you how to assemble an effective station and configure the software for best performance. Ham radio operators have already used these modes to earn awards such as ARRL’s DX Century Club with nothing more than 5 watts RF output and indoor antennas. You don’t need high power or large antennas with JT65 or JT9. Thanks to these two revolutionary digital communication modes, any radio amateur can easily make contacts throughout the world.
Explore a New World of Digital Communication.
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