According to the WSJT-X display on my computer, that was a 9081 mile trip. He was running 1 W and I was running 5 W. I like to compare that to what I can accomplish with JT9.įor example, I used JT9 to contact Brendon, VK4HIA, in Australia. This situation resulted in pages of logged CQs and no answers. The answer was usually “no” because I didn’t understand proper station design and operating procedure, and I was using a poor antenna. When I started out in ham radio as a Novice in January 1955, I often wondered if anyone was actually hearing me. My second contact was Randy Miltier, W6NT, and for my third I answered none other than Joe Taylor’s, K1JT, CQ! My first contact was with Peter Butler, W1UU. All the information you need for a JT9 contact is right there. Figure 1 shows a typical JT9 main dialog Figure 2 shows the Wide Graph screen where the waterfall is displayed. I put these together with my SignaLink USB audio interface and - voila - I was on the air. I downloaded the WSJT-X software, the Meinberg NTP timing program to sync my computer’s clock, and a display program called pskreporter. Your computer must be accurately synced to an accurate UTC time source. What is required, however, is good time synchronization. In fact, power levels greater than 20 W can be detrimental and may even cause other stations to be unable to decode the signal. Power is not needed and is not appropriate for this mode. One to 5 W transmitter output works well because each transmission of 13 characters is 50 seconds in length and the computer analyzes the signal according to the complex structure that’s been created by K1JT and other developers. JT9 makes it a pleasure to work very weak, low power stations thousands of miles away. He has built upon these to develop JT9 for HF and MF.
Jt65 usb or lsb series#
Joe originally developed the JT series of weak signal communication modes for UHF and VHF moonbounce and meteor scatter transmissions. I did know about Joe Taylor, K1JT, the prime mover behind the JT series of modes, thanks to his Arecibo moonbounce fame and other accomplishments. I had heard of JT65 but didn’t know anything about it and I had never even heard of JT9.
![jt65 usb or lsb jt65 usb or lsb](https://www.hamsphere.com/images/band_plan_40_nov_20.jpg)
I was introduced to JT9 by Keith Hunt, WC4U. 1 (I painted them a camouflage-brown color making them nearly invisible from the street.) Still, I get out quite well, but I’ve gotten a lot of experience with CW and PSK. Home Owners Association restrictions at my place limit my antenna farm to two W1IS monoband verticals for 40 and 20. In the following piece I will explain how you can use JT9 to do an unbelievable job of working very weak stations. I’ve always thought that bouncing signals off the ionosphere is next to miraculous in and of itself but JT9 seems to go one better. If a quick conversation with someone far away (similar to a contest contact) while running minimal power to a limited antenna is your type of fun, JT9 is worth a try. This weak-signal mode can give little pistol stations big gun results.