Wednesday, August 3, 2022

Can a Biologist Fix a Radio?

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  Andreas DL1AJG (who in real life is a professional biologist) sends us this excellent article about how biologists approach problems in li...
3 comments:
Tuesday, August 2, 2022

Home-Brew!

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Sometimes it is good to take a look at how other people home brew different kinds of things.  Here is a fellow in Ukraine that really HOME b...
Monday, August 1, 2022

Linear Tuning in the HT-37

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I just kind of like this picture.  This is the HT-37 dial that came with the HT-37 VFO assembly I recently bought.  Note the retro designati...
Sunday, July 31, 2022

Another HT-37 VFO -- No Temperature Compensation Trimmer Capacitor?

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Is that thing beautiful or what?  That is the VFO assembly from an HT-37.  This one includes the fly-wheel mechanism.  It tunes 5 - 5.5 MHz....
2 comments:
Thursday, July 28, 2022

Software, Hardware, and Rockets -- T-Zero Systems (videos)

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There is a lot of really cool stuff in these videos.  I am a hardware guy, devoted to HARDWARE Defined Radios.  But these videos are a remin...
Wednesday, July 27, 2022

IGY! Science and the Vanguard Satellite in 1959 (video)

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The International Geophysical Year (1958-1959) was a very scientifically productive period.  It is really amazing how much we learned from t...
Sunday, July 24, 2022

A Surprisingly Good Movie from the Late 1960s: "The Ham's Wide World" (Video)

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I found this movie to be surprisingly good.  Narrated by Arthur Godfrey, it features Barry Goldwater, and a lot of other hams.  There is a h...
6 comments:
Thursday, July 21, 2022

Apollo 11 in Real Time

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https://apolloinrealtime.org/11/ This web site presents all the data received from Apollo 11.   They are presenting it in the sequence it ha...
1 comment:
Tuesday, July 19, 2022

Putting a Real LC VFO in My Ceramic-Resonator, Direct Conversion 40 Meter Receiver. LC JOVO! (Video)

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This is the DC receiver that I built back in 2017-2018. I had used a ceramic resonator in the VFO. That receiver was on the cover of SPRA...
2 comments:
Saturday, July 16, 2022

Hex DX! First Long-Haul Contact with the New Hex Beam - VK4KA on 20 SSB

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This morning at around 1345 UTC I had the chance to try out my new Hex beam on some "down under" DX.  9,548 miles, 15,222 km    Th...
1 comment:
Friday, July 15, 2022

Jean Shepherd and Studs Terkel Talk About Radio on "The Big Broadcast" Sunday night 7pm-11pm

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  I'm home recovering from the second COVID vaccine booster (I feel OK, just a bit tired).  Our local public broadcast station, WAMU, an...
2 comments:
Wednesday, July 13, 2022

James Webb Telescope's Deep Field -- What Would Be Behind A Grain of Sand Held at Arms Length. Click on the Picture

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  NASA’s James Webb Space Telescope has produced the deepest and sharpest infrared image of the distant universe to date. Known as Webb’s Fi...
1 comment: