Second time using this solution outdoors with Greencube satellites and it works great! For less than $1 CAD, a cell phone holder with a quarter-screw opening and a tripod will do the trick Use the U-shaped clamp to mount the antenna on it and it's ready to use. It's very easy to control the pitch angle with high accuracy

This post is relatively short as it mainly records the operation process. This morning successfully completed a 144Mhz FT8 DX QSO with BA7NQ in Foshan, Guangdong (OL53). I'm using a 7-unit Yagi, straight line distance of about 300km. this QSO was completed in thunderstorm, thanks to the propagation brought by Tropical Disturbance 99W. *This behavior is highly discouraged and will put you and your radio in danger. Please disconnect the radio from the antenna during thunderstorms.

IO-117 is a satellite developed by the University of Naples, Italy, for growing vegetables (really!) The satellite carries a digital transponder. It operates in MEO orbit, an orbiting satellite characterized by long transit times and large coverage areas, making it a good candidate for DX. Because it has a certain threshold, few HAMs in China will use this satellite. I am glad I learned to use it and used it to QSO with many distant stations. In order to let you understand and use it, I have written this article, and I hope you will like it. I hope you will enjoy it. Also, please feel free to point out any non-exhaustive or wrong points. Special thanks: BG7XWF, BI4KZZ Device Required equipment/software: Optional equipment/software: Yagi antenna rotator and automatic frequency control software are especially recommended, which can save a lot of trouble. It is recommended to use YAGI antenna with 12dbd or more and add LNA amplifier to improve low elevation decoding rate. Hardware setup The following take IC-7100 for example, ICOM with the same brand of radio operation is similar, YAESU & Kenwood radio please feel for yourself (because I do not have YAESU or Kenwood radio, sorry) Same as using FT8 data communication mode, adjust the radio to data communication mode. Turn on the radio SPLIT function, select USB mode, and then turn off radio squelch. Software Setup Open Soundmodem, select the sound card corresponding to the radio in Settings-Device->Sound Card The PTT Port is set to the COM port of the radio so that it can automatically…

Holding an Yagi to do satellite QSO is really tiring (both physically and mentally), and handheld antenna gain is generally not that high (for weight control). U7V5 is about as werght as an average person can hold it up for a satellite connection. On the other hand, in 2022, the University of Naples launched a MEO orbiting amateur radio satellite: GreenCube. It puts higher demands on antenna gain, and with up to an hour of pass time, hand-held antennas are simply not feasible. After viewing the article written by BG7XWF, I decided to install a low-cost rotor for myself, which cost about C$78 (400￥).Links to articles he wrote. Thanks for him guiding me through the installation! The 301 rotator and 301 PTZ control box cost about C$48 (250￥) and carry 1.5m V7 Yagi + 1.8m U12 Yagi I use a 2.5m sign pole to support rotator and antenna. buy a plastic bucket or a larger delivery box and pour cement into it and stick the pole upside down. finally, install the monitoring camera transfer plate, and install the screw on the rotator according to the hole position. The antenna is supported by 2m Reker rods (epoxy tubes). purchase the M8x57 U-pipe card and punch two holes in the stick that fit just right. Finally, pull a network cable between rotator and the indoor control box; cut off the RJ45 connector, peel off the cable, and connect the cable according to the logo of the cradle rotator and control box. the control box code switch corresponds to the baud rate and…

Yongzhou, a small city in southwest China's Hunan Province, is known locally as "The city pulled out by the train." At the beginning of 21, I heard that Yongzhou East Station (Lengshuitan Station) would be demolished, so I listed it in the plan. However, the repeated development of the COVID-19 epidemic, the summer vacation finally failed to take place. Later, the Chinese National Day holiday, when the COVID-19 epidemic subsided, allowed me to go. Yongzhou East Station, is the original Yongzhou station, Lengshuitan station, in the Xiang-Guangxi line diverted and the new Yongzhou station, into a small end station, only for freight business. Photo: Yongzhou East Station signboard Photo: Platform of Yongzhou East Station Of course, the main reason for coming here is to see the diesel locomotive. The old Hunan-Guangxi line has not been electrified yet, and this is the junction of Nanning Group and Guangzhou Group, which brings together many different types of diesel cars from the two bureas-very comfortable. Nanning Group DF4D 7000 Series "Liuzhou Tiger" Nanning Group DF4D cargo Guangzhou Group DF4B "Watermelon" Nanning Group DF4B Go toward outside walk. There is no safety net on the old Hunan-Guangxi line, and pedestrians walk alongside trains on the shoulder of the road, a sight that is almost impossible to see today in 2021. But here, where emergency stops are common. Emergency stop In the evening, many people walk on the railway Unfortunately, Yongzhou East Station will cease operation at the end of this year and all operations will be moved to the newly built Yongzhou North Station.…

Recently want to build a forum, that what system to use? To use discuz? But discuz interface very old and have a lot of loopholes.....Finally, I found flarum. flarum is known as "the most beautiful forum system". I think that's true. The interface is fresh, simple and impressive. So I decided to use it. When I install, I stepped on a lot of pits, here to find out the correct installation of the way to share with you, I hope you can walk less detours. First, install composer. Next, install php and a php extension: fileinfo. Finally, create an sql database with the utf-8 and write down the username and password for later use. cd to the root directory of your site and type composer create-project flarum/flarum . --stability=beta If you use the Pagoda Panel, in the php Settings of the Pagoda Panel, undisable the following three functions: putenv pcntl_signal proc_open After the command is executed, enter chmod +x 775 Change the file permission to 775 Change the run directory to /public Enter in the configuration fileinclude /path to your site/.nginx.conf; Otherwise you will find the administration page 404, users can not log in, and can not post. Finally, enter your website address in the browser, go to the flarum installation program, and follow the GUI instructions to complete the installation process. After the installation is complete, you can go tohttps://flagrow.ioto install various plug-ins.