Showing posts with label China. Show all posts
Showing posts with label China. Show all posts
Monday, May 27, 2024

Ham Radio in China -- Interesting info from 高大伟 David Cowhig

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Chinese Radio Licenses and Operating Certificates David Cowhig (aka WA1LBP,  aka Gao Da Wei) was Hambassdor for 73 Magazine on Okinawa when ...
Thursday, March 14, 2024

"The New Essential Guide to Electronics in Shenzhen" A Book Review by Jenny List (with a video from Shenzhen)

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This new book looks really good.  Great electronics info, with lots of cultural and linguistic wisdom.  https://hackaday.com/2024/03/13/revi...
Tuesday, January 23, 2024

IMSAI Guy Looks at Counterfeit Chips

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Like some of the commenters, I had been scratching my head wondering why someone would go to all the trouble of counterfeiting electronic pa...
2 comments:
Friday, December 29, 2023

7J6CBQ on Okinawa -- And a Translation of a Science Fiction Novel about Ham Radio in China

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  The article about Sergeant Malik Pugh USMC on Okinawa brought back memories from the 1990s. David Cowhig was 73 Magazine's Hambassado...
1 comment:
Wednesday, November 29, 2023

Other Workshops: Genius Girl Fixes (Re-builds!) Old Tractor

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This is amazing.  I put it in the "other workshops" category, but when you watch this you will see that  she re-builds this tracto...
3 comments:
Monday, August 8, 2022

Polyakov (RA3AAE) Direct Conversion Receiver: 40 meter DC RX with VFO at 3.5 - 3.6 MHz (with video)

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I've been reading about Polyakov (or "sub-harmonic") Detectors for a long time:  https://soldersmoke.blogspot.com/search/label...
4 comments:
Monday, April 4, 2022

The Next Time You Hear Someone Complaining About Winding Toroids....

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... send them this video.  Lin is in Hong Kong. What a great job she does with very simple tools.  Notice how she casually mentions that for...
3 comments:
Saturday, December 25, 2021

The (Real) Solar Flare of August 1972 in Cixin Liu's Science Fiction

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  A view of McMath Region 11976 from the Paris Observatory early on 4 August 1972.  I have a vivid memory of seeing -- as a kid -- Aurora fr...
2 comments:
Wednesday, September 22, 2021

Some Initial Thoughts on FT-8

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 -- This is really interesting technology.  Three cheers for Joe Taylor and colleagues.  This mode would obviously be very useful for fast, ...
12 comments:
Tuesday, August 31, 2021

Kintsugi -- A Japanese Philosophy for the Owners of Imperfect Rigs

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  On Sun, Aug 29, 2021 at 4:05 PM Bob Scott wrote: Hi Bill:    After listening to the latest Soldersmoke I thought you might find the Japane...
Saturday, February 20, 2021

A Step Closer to the Elser-Mathes Cup? Ham Receives Signals from Mars

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  That is the antenna that Scott Tilley VE7TIL  used to receive signals from the Chinese spacecraft Tianwen-1 in orbit of Mars.  In a recent...
Friday, January 1, 2021

Glowing Numerals for the Lafayette HA-600A (With Jeweled Movements)

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  I really like this receiver.  I have strong sentimental ties: it was my first SW receiver.  But the frequency readout situation was kind o...
2 comments:
Thursday, December 3, 2020

Receiving Signals from China's Chang'e-5 Lunar Sample-Return Mission

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Background info:  https://www.scientificamerican.com/article/chinas-change-5-mission-launches-to-collect-lunar-samples/  A great report f...
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:
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:
Saturday, August 1, 2020

SolderSmoke Podcast #224: Mars. Spurs. Bikes. SDR. NanoVNA. Antuino. MAILBAG

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SolderSmoke Podcast #224 is available: http://soldersmoke.com/soldersmoke224.mp3 1 August 2020 --The launch of Perseveranc...
3 comments:
Friday, April 10, 2020

Blog -- "Chinese Electronics Products Tested"

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I was looking for information on my  FeelTech FY3200s Signal Generator.  I came across a very informative blog; it covers a variety of ot...
5 comments:
Monday, July 8, 2019

Chinese Micro-Satellite Photographs Eclipse -- FROM THE MOON

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Back in October 2018 I posted about this Chinese satellite:  https://soldersmoke.blogspot.com/2018/10/chinese-amateur-satellites-orbi...
1 comment:
Saturday, October 13, 2018

Chinese AMATEUR Satellites ORBITING THE MOON! Radio Amateurs Receiving Images

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This is really amazing and deserves more attention than it has been getting.   http://www.spaceflightinsider.com/organizations/china-...
2 comments:
Tuesday, June 12, 2018

Video on PCB Factory in China

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This factory is a LONG way from Manhattan -- both from the island and from the technique.   How about some Juliano Blue PC Boards?    ...
4 comments: