PI4ZLB

If you have a shortwave receiver, tune it to 4625 kHz. You’ll hear something that on the surface sounds strange, but the reality is even stranger still. According to the BBC, the radio statio…

Bron: Radio MDZhB | Hackaday

When it comes to microcontroller development boards, we have a plethora of choices at our disposal. Each has its strengths and weaknesses, be they associated with its support and community, its int…

Bron: Another Arduino Compatible? This Time, It’s A Sony

Even if you haven’t used one, you’ve probably seen the numerous projects with the inexpensive RTL-SDR USB dongle. Originally designed for TV use, the dongle is a software defined radio …

Bron: One Transistor RTL-SDR Upconverter | Hackaday

At first glance, the ColibriNANO SDR looks like another cheap SDR dongle. But after watching [Mile Kokotov’s] review (see video below), you can see that it was built specifically for software…

Bron: ColibriNANO USB SDR Receiver Reviewed

Our feed is full of stories about the RF noise floor today, and with good reason. The ARRL reports on the International Amateur Radio Union Region 1 president, [Don Beattie, G3BJ] warning that in d…

Bron: RF Noise Floor Concerns From Both Sides Of The Atlantic

Recently, the voice push to talk circuit in [Ryan]’s BITX40 radio was keyed down for a very long time. Blue smoke was released, a MOSFET was burnt out, and [Ryan] needed a new IRF510 N-channe…

Bron: Let’s Play Spot The Fake MOSFET

Bron: On Point: The Yagi Antenna