You made me do it @QRPerDotCom this bag is so cool!

Working on more (tr)uSDX mod PCBs 🤔

Fed up with low quality parts in my (tr)uSDX kits, I decided to go my own way on the RF board. Highest quality components I could source from @digikey, toroids from kitsandparts and perfect PCBs from @oshpark. Testing out beautifully so far.

@oshpark @alangarf thoughts on the amplifier design in the linked article?

Starting to work on a HF amplifier following this article. First step is the power supply board with overcurrent protection for the FETs. Looks great in After Dark finish, and tests out perfectly! On to the amplifier board... https://t.co/j0dh8isxqi

I find the weirdest stuff in my junk box. 🤔

They measure in at 46.5 ohms impedance, so I need to tweak the recipe a little, but they sure do look the part!

Got my Clean Sweep for #13colonies plus WM3PEN. Awesome ham radio special event!

I had a joke about square waves, but people's bandwidth for this twitter meme ran short and it lost its edge.

After Dark finish from @oshpark turned out great. This is a add-on board for a Bemicro Max 10 FPGA dev board that visualizes the generation of the Long PN Code in a CDMA cellular system.

This should look great in @oshpark After Dark finish. 🧐🌒

After Dark from @oshpark is really cool. I might redo this board without the ground fill to compare.

Nice clean way to experiment with the Tzumi MagicTV. Install a little serial port in the side for a USB-to-Serial converter and keep the board and battery inside the case.

I finally got a 3D printer and now I just want to print ALL the things.

Three channel board for Osmo-fl2k. Yay or nay? 🤔

Transmitting narrow FM with Osmo-fl2k. I populated one of my filter boards with a band pass for 2 meter. Nice clear audio. Just need to work out a push-to-talk mechanism and I'll try it on air. Any ideas for inserting CTCSS?

The filter on the board shown is a 10-pole chebyshev bandpass for the FM broadcast band. It filters the carrier and harmonics nicely, but there are still many strong, narrow spurious signals in the pass band....

Working on some SMA adapters for Osmo-fl2k. The one with a bandpass filter will take a little more work, and I have a board with an L-match on order. But here is the simple SMA breakout for anyone interested: https://t.co/4IMfXf7Yrl

Osmo-fl2k is working great. A 30 dB attenuator is just right for connecting to an RTL-SDR dongle directly. Check this out if you want to make your own attenuators: https://t.co/HKUt9BdI23

Ready to experiment with Osmo-fl2k. $15 transmit-capable SDR? Fascinating. I also worked up a small board to help break out the transmit pin to an SMA connector, looking forward to getting it back from @oshpark #osmofl2k #osmocom