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26.07.202526.07.2025 enthru electronics measurements

Noname chargers test

Pay attention to the cursor measurements for pulsations. P2P just to estimate other noise. Connections :): 1: Idle: 1A: 2A: 2: Idle:

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23.07.2025 enthru electronics, tools IR-soldering, preheater, soldering

Preheater progress pt.2

22.07.202523.07.2025 enthru electronics, tools IR-soldering, preheater, soldering

Preheater progress pt.1

20.07.202522.07.2025 enthru hamradio amplifiers, measurements, sdr, wolf, wolf3

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:

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18.07.202518.07.2025 enthru electronics, tools infiray, photos

Can see wire in the wall under AC on a thermal camera :)

17.07.202522.07.2025 enthru electronics, tools diy-preheater, IR-soldering, preheater, soldering

Heaters testing

17.07.202522.07.2025 enthru electronics, tools IR-soldering, preheater, soldering

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

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17.07.2025 enthru electronics gadgets, packages

Cool packages

For lower heater for soldering: For fans 🙂 UART to Ethernet:

15.07.202515.07.2025 enthru hamradio sdr, wolf, wolf3

New RU4PN QRP unit VNA HF measurements

BPF: LPF, it’s possible to tune it a bit:

10.07.202512.07.2025 enthru electronics soldering, tools

Video about soldering (RU)

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