JT65-HF is an adaptation of the JT65A protocol with an emphasis upon its usage in the high frequency Amateur bands to facilitate weak signal communications and experimentation. JT65-HF would not be possible without the efforts of Joe Taylor – K1JT and his WSJT

2015年6月1日 · With JT65, you’re restricted to very small messages, with a limit of 13 characters per message. Here is a typical conversation over JT65: Each message of up to 13 characters is sent over the course of 50 seconds, starting at the top of each minute, so the above conversation would take seven minutes.

2020年11月27日 · Amateur Radio software for transmission/reception of JT65 protocol on HF bands 2m - 160m Note: The JT65 encoding and decoding routines, also used in WSJT, are developed by K1JT, Joe Taylor. Characteristics: - jt65v2 protocol - Multi decoder - JT65-Log, HRD, DXKeeper, Log4om, MixW2, Logger32, Swisslog, TRX-Manager, WSJT-X, ADIF - …

JT65 is a digital protocol intended for Amateur Radio communication with extremely weak signals. It was designed to optimize Earth-Moon-Earth (EME) contacts on the VHF bands, and conforms efficiently to the established standards and procedures for such QSOs. JT65 includes error-correcting features that make it very robust, even with

2017年7月7日 · 实际上，不光jt65叫“老头乐”。 “老头乐”是我们给JT一系列模式的称呼。 它们都因为其极慢的通联速度和较少的信息传递量而知名。

JT4, JT9, and JT65 use nearly identical message structure and source encoding (the efficient compression of standard messages used for minimal QSOs). They use timed 60-second T/R sequences synchronized with UTC.

2025年3月9日 · JT65 is an amateur radio QSO communication protocol developed by Joe Taylor, K1JT. JT65 has 3 submodes: JT65A, JT65B, and JT65C. The most popular submode of JT65 is JT65A. JT65 gets '65' from the 65 tones it uses. Each transmission begins at t = 1s after the start of a UTC minute and finishes at t = 47.8 s.

2011年10月17日 · jt65-hf是用空间通信程序jt65改写的，其特点是用几瓦的小功率和比较差的天线，在很弱的信号条件下实现通联，比如，前天下午，我用ft-817nd，距地面高度只有6米的正v天线，在28.076上和檀香山kh6oo进行了通联。

2012年4月18日 · jt65数字通讯协议作为一个高度精确的通信协议，让我们从利用听觉解码信息扩展到利用计算机进行信号处理并采用视觉进行信息读取，业余无线电通讯技术也从模拟发展到数字，让我们感受到业余无线电通讯技术飞跃发展的同时体验到数字通讯技术的神奇效果 ...

短波上的JT65 • 短波段上的JT65―革命”要归功于Joe大神— W6CQZ。 • Joe编写了JT65-HF软件，使得人们更加方便地用 JT65模式进行通联。 • JT65-HF目前只能在Windows系统下使用。 • 对于低功率、天线受限制的电台，这是一个优秀 的操作模式。