Видео

How to decode the PSK beacon and the Experimental beacon on QO-100

Install the cheap chinese TCXO in my Yaesu FT-817ND, after installation an on the air test. 73's

Cheap and easy to build antenna, for reception of the Very Low Frequency stations. dimensions are in the video, 73's

DIY enclosure for the chinese MiniWhip antenna (10 Khz - 30 Mhz) using 40mm PVC tube, on thingiverse you can download the end cap, www.thingiverse.com/thing:5246711 or search on thingiverse " on4cco" , enjoy

In this video, I test 2 models of Chinese Cable testers, you find these on AliExpress, Ebay etc... Both testers are low cost...

If you buy a chinese Mini-Whip antenna , be careful when you want to connect it to your receiver, there are BIAS-T PCB sold with a design fault, and these BIAS-T PCB can blow-up your receiver! These mini-Whip antenna's are sold on AliExpress, Banggood, Ebay....

this converter converts the VLF 10 kHz - 2 MHz band to the 20m band : 14.010 - 16.000 MHz.

Repair of a 1970 SPM-3 Selective Level Meter (German: Pegelmesser) can be used as a Very Low Frequency (VLF) receiver from 300 Hz up to 612 KHz. on4cco.synology.me

Just build for fun from old parts... old Remote control module, old laptop battery's, solar pannels, and a Arduino Nano on4cco.synology.me

Testing a brand new Yaesu VX-6 in plain water.... does it survive the test?

I modified a low cost PLL LNB with a low cost TCXO , and the stability is very good, and the stations I received are very good to hear. Because the TCXO runs on 3.3V an AMS1117 is also inserted. Http://on4cco.synology.me

When I buy one of these cheap attenuators from china, is seems not to work... on4cco.synology.me

Chinese VCO oscillator repair on4cco.synology.me

Test on 436 MHz with 5V DC... on4cco.synology.me

Landing platform for drone (Tello DJI)