Sunday, September 27, 2020

A Suitcase Portable 40 Meter CW Station from 1951

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  Wow.  Check this out: http://www.skywaves.ar88.net/homebrew/W9FKC.pdf A very nice  rig built by an amazing homebrewer  And thanks to Al Kl...
1 comment:
Thursday, September 24, 2020

Global Specialties Corporation 6000 Frequency Counter -- Anyone have a Plessey SP8630B Chip?

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Continuing my effort to improve my workbench and its test gear, this week I turned to an old frequency counter that I picked up at the Kempt...
4 comments:
Wednesday, September 23, 2020

Wisdom from AA0ZZ: NO LIBRARIES! ASSEMBLER CODE ONLY! -- "Digital Crap" -- "No Magic Fruit" What qualifies as a real rig? Si570 vs. Si5351

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  Bill, Why do you guys make your Soldersmoke podcasts so darn intriguing such that I can’t listen to them in the background while I’m doing...
1 comment:
Monday, September 21, 2020

HP8640B Internal Frequency Counter Fixed (More Repairs Pending)

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  The HP8640B is a complicated machine.  Above you see just one sub-assembly, and the page from the manual that describes it.  This is what ...
1 comment:
Saturday, September 19, 2020

SolderSmoke Podcast #225: Mars, uSDX, G-QRP, HP8640B, DX-390, Rotary Tools, Walla Walla SDR, MAILBAG

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SolderSmoke Podcast #225 is available http://soldersmoke.com/soldersmoke225.mp3 Mars,  West Coast smoke. Pete's Activities:  -- DC recei...
3 comments:
Friday, September 18, 2020

Mixer Insights using Propellers and Cameras -- From Walla Walla University. And SDR Design Info.

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  Pete Eaton sent us this video from the 2020 ARRL/TAPR Communications Conference.   I have the portion of interest cued up (above).  (The...
1 comment:
Monday, September 14, 2020

A Regen Receiver Made with Homebrew Tubes

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Wow, a regen receiver using homebrew triodes.  Makes me feel like such a pathetic appliance operator, what with all my STORE-BOUGHT TUBES......
3 comments:
Sunday, September 13, 2020

HP8640B -- Fault Found! A very TINY and Hard-to-Fix Fault

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  I've been troubleshooting the internal counter in my HP8640B signal generator. The generator itself works fine.  And the counter works...
1 comment:
Friday, September 11, 2020

HP8640B Counter Repair --- Discretion? Or Valor?

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  Inspired by BH1RBG, I cracked open the HP8640B to have a look at the counter circuitry.  Above is the view that greeted me.  That is the m...
7 comments:
Thursday, September 10, 2020

The Agony of Troubleshooting -- From China

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  I am troubleshooting my beloved NYC HP8640B Signal Generator (thanks to Steve Silverman and Dave Bamford).  Some of you may wonder why I d...
6 comments:
Wednesday, September 9, 2020

Dalibor Farny: Making Nixie Tubes in a Castle in the Czech Republic

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“Our customers are interested in technology – some people buy paintings for their wall; our customers buy a technical piece of art. I thin...
Tuesday, September 8, 2020

Builds Oscilloscope at age 12! Nick has THE KNACK

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Thanks to Grayson Evans for sending us this very encouraging video.   It is from Tektronix;  I wonder if Alan W2AEW provided some ideas a...
1 comment: