| ITF-1 | |
| Mission Type: | Amateur radio |
| Operator: | Tsukuba University |
| Website: | yui.kz.tsukuba.ac.jp |
| Cospar Id: | 2014-009B |
| Satcat: | 39573 |
| Spacecraft Type: | 1U CubeSat |
| Manufacturer: | Tsukuba University |
| Launch Mass: | 1.3kg (02.9lb) |
| Launch Date: | UTC[1] |
| Launch Rocket: | H-IIA 202 |
| Launch Site: | Tanegashima Yoshinobu 1 |
| Launch Contractor: | Mitsubishi |
| Orbit Epoch: | 28 February 2014[2] |
| Orbit Reference: | Geocentric |
| Orbit Regime: | Low Earth |
| Orbit Periapsis: | 382km (237miles) |
| Orbit Apoapsis: | 391km (243miles) |
| Orbit Inclination: | 65 degrees |
| Orbit Period: | 92.28 minutes |
| Apsis: | gee |
ITF-1, also known as Yui, was an amateur radio cubesat built by Tsukuba University of Japan.
It had a size of 100x100x100mm (without antenna) and was built around a standard 1U cubesat bus. The satellite's primary purpose was the raising awareness of space by providing an easily decoded signal to amateur radio receivers. ITF-1's mission was unsuccessful; no signal from the spacecraft was ever received, and it reentered Earth's atmosphere on 29 June 2014.