2019年10月11日 · FT8 is one of a group of Multiple Frequency-Shift Keying (MFSK) modes that include JT9, JT65 and MSK144 created by Joe Taylor, K1JT and co-developers. Why would I want to operate FT8? FT8 is designed to maximize communication even when signals are very weak (as low as -24dB).

FT8 (short for Franke-Taylor design, 8-FSK modulation) is a frequency shift keying digital mode of radio communication used by amateur radio operators worldwide.

With FT8, you’re restricted to very small messages, with a limit of 13 characters per message. Here is a typical conversation over FT8: Each message of up to 13 characters takes 13 seconds to send. There are 4 slots per minute, and you transmit for one 15 second block, then listen for replies for 15 seconds, and transmit again for 15 seconds.

Are you interested in exploring the world of digital modes in amateur radio? FT8 is a popular and efficient mode for making contacts, even under challenging band conditions. In this guide, we'll walk you through the essential software and hardware needed to …

2022年6月3日 · FT8 is a very popular protocol and continually growing. But does everyone understand the nuances? What do all the characters mean? What are the frequencies? Why are the signal reports’ negative numbers? This blog will explore some of these meanings and oddities. FREQUENCIES. FT8

2022年3月10日 · Created by K1JT and Steve Franke, K9AN, FT8 stands for “Franke-Taylor design, 8-FSK modulation.” WSJT-X is a computer program used for weak-signal radio communication between hams. Note that this says weak signal and not necessarily low power.

WHAT IS THIS FT8 THING? FT8 was designed to accomplish much of the same things as JT65 but within a shorter exchange time •8-FSK modulation •15 seconds per transmission cycle with very little gap between cycles •Wider bandwidth than JT65 while still narrower than JT9 • 50Hz wide with tones spaced at 6.25Hz

2018年1月20日 · If you have or are thinking of diving into the FT8 digi world I was made aware via a Dutch blogger Paul PA0K (his brand new call) of this amazing FT8 operating guide by Gary Hinson ZL2ifb. This guide is for the seasoned FT8 op, the beginner and those who are not sure if they really want to give it a go but would like to learn what it's all about.

– FT8: Franke & Taylor, 8-frequency shift keying format. Why FT8? Forward error correction (FEC) in FT8 uses a low-density parity check (LDPC) code with 77 information bits, a 14-bit cyclic redundancy check (CRC), and 83 parity bits making a 174 …

FT8 is designed to maximize communication even when signals are very weak (as low as -24dB). This means that even low-powered stations and stations with sub-optimal antennas can make contacts worldwide.