🚀 DIY RF PCB kit nightmare! Designed an enclosure for a friend’s antenna tuner kit and fixed major flaws:
Weak PCB mounting — only 4 screws? Added 3D-printed supports.
Tiny coil pads — desoldered and reinforced.
Wobbly coils — stabilized with silicone potting.
Poor cable connectors — no connectors or strain relief.
Hand-drawn traces and awful via stitching — leaked silicone through gaps!
Bad RF grounding.
Ever seen worse? Share your stories!
Another successful repair!
Marconi 2955 radio test set was developed in 80s. It can be still used nowadays for setting VHF/UHF radios.
This particular set didn't boot.
It turned out there were two reasons:
- shorted +12V line on PSU board
- broken 10MHz clock cable
After two hours of careful troubleshooting it works like a charm!
🎄 Christmas Gift Hack: SILVERCREST SHZK 600 B3 Vacuum Cleaner 🧹
Got this vacuum as a gift, but the HEPA filter clogged quickly. Solution? Add a pre-filter! 🧼 Place a small piece of cleaning cloth or paper towel before the HEPA filter. Replace it when suction decreases. Easy fix! Have you hacked your vacuum cleaner? 🤔
#LifeHacks #VacuumCleaner #DIY #CleaningTips #SILVERCREST #Lidl
🔧 Yesterday’s Lab Power Supply Adventure ⚡
I repaired a Topward TPS-4000 lab power supply from the 1980s. It has two 30V, 3A channels in a master-slave setup.
🛠Issues:
🔸 Slave channel dead – a shorted Zener diode and bad LEDs/transistors.
🔸 Master channel unstable – turned out to be a cold solder joint on the main capacitor!
📖 The service manual was a lifesaver, and the build quality impressed me.
Ever had a repair like this?
🚀 When a DIY RF PCB kit goes wrong…
A Friend’s Antenna Tuner Project
A friend of mine asked me to design an enclosure and finish assembling an antenna tuner kit sold by Dx World. Sounded like a simple task, right? Well… what could possibly go wrong? 🤔
Turns out, quite a lot. Read breakdown of the biggest design issues I encountered in the thread!
💡 Can you find more flaws? Share in the comments! 🔽
#RFDesign #PCB #Engineering #Electronics #Hardware #PCBDesign #RFAntenna #ElectronicsFail
💻 Why I turned my old #Chromebook into a cheap, powerful #Linux ultrabook?
As an amateur radio operator, I needed a small, lightweight, and budget-friendly laptop for logging contacts during field operations. Older laptops weren’t an option – their batteries don’t last long. With a little help from #MrChromebox, you can turn a Chromebook into a Chrultrabook – unlocking its full potential by flashing new boot firmware!
🔗 Step-by-step guide 👉 https://buff.ly/40SI1kM
