Noname chargers test
Pay attention to the cursor measurements for pulsations. P2P just to estimate other noise. Connections :): 1: Idle: 1A: 2A: 2: Idle:
Preheater progress pt.2
Preheater progress pt.1
Wolf RU4PN QRP Unit some tests
Just transmit on 20m band before little tuning (after tuning of the bias I’ve got around -54dbm of 2d harmonic). 60db att:
Can see wire in the wall under AC on a thermal camera :)
Heaters testing
Soldering preheater.
Starting assembling it just for fun. I’ll start with rex-c100 controller, but I plan to assemble esp32 controller too (software already written
Cool packages
For lower heater for soldering: For fans 🙂 UART to Ethernet:
New RU4PN QRP unit VNA HF measurements
BPF: LPF, it’s possible to tune it a bit: