Monday, May 30, 2022

A Modern Mechanical Television -- Nipkow Discs and Arduinos Lead to a Mechanical Color TV (video)

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I had, of course, heard about the mechanical TV systems that pre-dated the CRT-based "electronic TV" invented by Philo Farnsworth....
3 comments:
Saturday, May 28, 2022

"Experimental Methods in RF Design" LADPAC Software Available FREE!

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We've frequently said that is pays to check the W7ZOI web site.  Tony G4WIF did just that and pointed us in that direction, noting that ...
Friday, May 27, 2022

"Hobby High" from the Lamarkaan Radio Club and The Hindu magazine

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  https://www.thehindu.com/opinion/open-page/hobby-high/article65375392.ece?fbclid=IwAR01JGwweZuJEH1Pg15rREybZqfqKUjU3ZLbGn-xhOYZVlFPs7yN_Fb...
Thursday, May 26, 2022

Marohu: The Dominican Telescope with a 25 inch Mirror Originally Made for JPL

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  https://dominicanrepubliclive.com/development/dominicans-built-the-largest-telescope-in-the-region/?utm_source=rss&utm_medium=rss&...
Wednesday, May 25, 2022

HF Bandsweep with the Hammarlund HQ-100 (video)

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It has been a while since we last did a bandsweep.  Too long.  Here is one using my recently fixed up Hammarlund HQ-100.  Repair details are...
Tuesday, May 24, 2022

Sticker Shock -- WYKSYCDS Stickers Spotted in NYC and in a Netherlands Pub! Awards!

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  I am awarding the coveted Brass Figlagee with Bronze Oak Leaf Palm to Dave W2DAB, to Lex PH2LB, to Jesse N5JHH, and of course to Pete Juli...
Saturday, May 21, 2022

Repairing the Sony ICF SW1 Receiver -- Used for Numbers Station Reception? Why no replacement for C-625?

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Ten years ago, my friend John gave me this tiny Sony receiver.  It wasn't working.   I tried to fix it but quickly discovered that the t...
4 comments:
Friday, May 20, 2022

500 WYKSYCDS IBEW Stickers Arrive in Europe! Order yours today! Free!

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Lex PH2LB in the Netherlands has gone the extra kilometer for the IBEW.  When he saw the stickers that had been placed in New York City, he ...
2 comments:
Thursday, May 19, 2022

Frank Jones's Homebrew Rig -- as described by Michael Hopkins AB5L (SK)

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"Frank is all homebrew. His receiver is unshielded outside, but built around a central square of aluminum that houses a Velvet Vernier ...
Wednesday, May 18, 2022

W1VD's Boatanchor Receiver Tests

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I've been trying to get more rigorous in my evaluation of receiver performance.   My HQ-100 is tuned to Radio Marti, and it sounds great...
Tuesday, May 17, 2022

Troubleshooting and Fixing Old Faults in my Long-Suffering Hammarlund HQ-100 (Part 2) (video)

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Work continues on my old Hammarlund HQ-100. I give background on the rig and explain the electrical trauma it likely suffered. Following ...
4 comments:

Tim Hunkin on Prototyping, Welding, and on Being a "Jack of all Trades"

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I always like Tim Hunkin's videos, even when they are not directly related to radio electronics.  In this one we learn about his prototy...