Showing posts with label HP8640B. Show all posts
Showing posts with label HP8640B. Show all posts
Tuesday, June 20, 2023

Part 2: CuriousMarc Fixes an All-Discrete Counter -- "Like an IC, but in discrete form."

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Marc nicely sums up this project with this line:  "It's an IC but in discrete form!"  On the same theme, he later says, "...
3 comments:
Monday, June 19, 2023

CuriousMarc Repairs an old DISCRETE COMPONENT HP Frequency Counter

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I really liked this repair video from CuriousMarc (aka AJ6JV).  This counter pre-dates the use of integrated circuits -- it is all discrete ...
2 comments:
Tuesday, March 7, 2023

SolderSmoke Podcast #244 PETE IS BACK! TR-7, CK722, BFR106, HP8640B, High-School Receiver, 10 Min TX, MAILBAG

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SolderSmoke Podcast #244 Is available: http://soldersmoke.com/soldersmoke244.mp3 Video version at: (118) SolderSmoke - YouTube HE’S BACK! ...
1 comment:
Friday, March 3, 2023

My HP8640B Signal Generator Lives Again

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I'd really come to like this old signal generator.  The construction is superb.  It was built to be repaired.  As you open it up you fin...
7 comments:
Saturday, October 31, 2020

SolderSmoke Podcast #226 The U.S. Election, Solar Cycle, uSDX, Hermes, HP8640B, SGC 600 Sig Gen, HA-600A, Mailbag

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SolderSmoke Podcast # 226   http://soldersmoke.com/soldersmoke226.mp3 ---------------------------------- About the U.S. election -----------...
21 comments:
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:
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:
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: