Category: Electronics

QSX Update: February 2019

QSX Update February 2019

It’s the last day of February 2019, and if you’re like me you’ve been waiting ever so patiently for QRP Labs to release their upcoming QSX all-band HF rig. It’s slated to be feature packed SDR based radio, starting out as a 40 meter radio but will be expandable to cover all bands between 160 …

Continue reading

Panasonic AM/FM Clock Radio Teardown

Have you ever been at a thrift store and wondered if you should buy that super cheap bit of electronics and salvage or re-use it? In this video we discuss how to tear down such a beast, and discuss things like what makes a good find, what parts can be easily re-used, and how industrial …

Continue reading

QRP/ BITX40 and uBITX Case on sale!

UPDATE July 16th: It’s $6.99 until July 26th, the lowest we’ve seen it! Hey QRP Folks, I just saw that the Excellway EF01 case, so commonly used on BITX40 and uBITX builds is *ON SALE* until February 28th. Be sure to pick one or two up while the price is so low. They’re only $8.99 …

Continue reading

The W7RLF BITX40: Finished at last!

Last year I thought the BITX40 was “done”. It successfully worked on 80, 40, 30, and 20m. It was truly multi-band! The trick to doing that was to make the Band Pass and Low Pass filters pluggable using QRP Labs filters. One only needed to open the radio, change the filters, and retune the VFO. …

Continue reading

Dabbling in Circuit Art: The LM386 Spider

Last month I built the DC40 receiver (and wrote a giant series on it: Part 1, Part 2, Part 3 and Part 4. And somewhat unofficially Here!) and at the same time, Hackaday.com posted their Circuit Sculpture contest. Would it be possible for me to combine projects, and submit the DC40 as a circuit sculpture of some …

Continue reading

QSX Update: January 2019

We know that Hans Summers of QRP Labs has been working hard on the QSX for many months. Hans unfortunately had to deal with some rather worrisome health issues. Those are handled now and he’s back in action, and work on the QSX is progressing steadily. On Wednesday 9, 2019 he did a presentation for …

Continue reading

KI7MNW’s Homebrew QRP Transceiver

Cameron Tribe, KI7MNW recently posted his homebrew QRP transceiver on the Amateur QRP Radio group on Facebook. It’s completely scratch built and borrows design elements from several sources including the BITX40. Follow all the way to the bottom for a picture gallery, schematics, and source articles. Tonight I finished my homebrew 40m QRP transceiver. I’ve …

Continue reading

Building a Direct Conversion Receiver: Part 4

We last left off with having built the Diode Ring Mixer portion of the DC40 direct conversion receiver that we started on in Part 1. As was discussed, the Diode Ring Mixer accepts input from two sources: The antenna (through a Band Pass Filter) and the VFO. Now it’s time to examine these two critical …

Continue reading

Building QRP Labs Band Pass Filters: 3 Tips you should know!

QRP Labs Band Pass Filters are these wonderful little kits that largely take all the question of building a filter. They use a proven design, the kit includes the inductors and wires, and the build instructions are top notch.  One thing I love about the QRP Labs Band Pass (and Low Pass) filter kits is that …

Continue reading

QSX Update: Spectrum Analyzer!

For those of us anticipating the release of the QRP Labs QSX (which we talked about in A Previous Post), any news from Hans Summers, the owner of QRP Labs, is exciting. He posted an update over the weekend that will whet the appetite a bit. If you’re unfamiliar with what a spectrum analyzer does, …

Continue reading