Saturday, February 29, 2020

How to Measure Output Impedance (video)

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Thanks to Tony Fishpool G4WIF for alerting us to this very useful video by Alan Wolke W2AEW.  Alan's video channel is a real treasu...
1 comment:
Thursday, February 27, 2020

From a Student of C.F. Rockey, W9SCH

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C.F. Rockey W9SCH We have discussed the monumental work of C.F. Rockey, W9SCH, SK  before .  Yesterday a comment appeared under that po...
3 comments:
Wednesday, February 26, 2020

For those rare occasions when things go well....

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Monday, February 24, 2020

SolderSmoke Podcast #218: S-38E Woes; CW filter for uBITX; A Teensy Explosion; Mint, Cheese and Peaberries; Mailbag; A SPECIAL PLEA FOR FEEDBACK

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SolderSmoke Podcast #218 is available  http://soldersmoke.com/soldersmoke218.mp3 SolderSmoke 218 is Sponsored by AF4K Crystal...
4 comments:
Sunday, February 23, 2020

TRGHS: Hearing K5HCT Through a Single 12AU7 Tube with 12 Volts on the Plate (Video)

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The lower portion of the column on the right-hand side of this blog is where I put links to interesting blogs, YouTube channels, and web s...
Saturday, February 22, 2020

VK3HN's AM Pulse Width Modulated Homebrew Transmitter

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I'm still working on trying to match the excellent results Paul achieved with his AM receiver.  Then this morning I wake up to a Hack-...
Friday, February 21, 2020

PH2LB's Homebrew Hi-Per-Mite CW Filter in his uBITX

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I really like the way Lex PH2LB measures and demonstrates the effectiveness of the Hi-Per-Mite CW filter designed by David Cripes NM0S.   ...
Thursday, February 20, 2020

Tribal Knowledge: More on Tapping Metal

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Back in 2014, when I was putting together my EB-63A solid state amplifier, I had to learn how to tap aluminum so that I could attach my t...
1 comment:
Wednesday, February 19, 2020

Hi-Per-Mite Active Audio CW Filter Installed in uBITX (video)

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Coming home from the Dominican Republic, this was a major item on my list of desired mods for the uBITX: a narrower passband for CW.  Usin...
3 comments:
Monday, February 17, 2020

K6RRE's One Tube Rig Project

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Mike will send us more info later... 
3 comments:
Sunday, February 16, 2020

The Elektor SDR Kit: Arduinos, Si5351s, Sound Cards, WSPR, QRP Transceiver (video)

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Obviously a lot of potential here.  Thanks to Hack-A-Day for the alert.  https://hackaday.com/2020/02/14/rf-shield-turns-arduino-and-pc-...
Friday, February 14, 2020

The Si4730 Radio Chip (Luddite Alert!) (video)

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I have misgivings about this.  Hack-A-Day presents it as a DIY radio project and wonders if this might be the modern equivalent of the cry...
6 comments: