DIY Spectrum Analyzer 0 to 1750MHz (1999)

Re:DIY Spectrum Analyzer 0 to 1750MHz (1999) by jhallenworld on Wednesday January 02, 2019 @01:30PM (#18808641)

The sheet metal work in projects like this interests me. In the 1930s the new technology of the time was shortwave radio, so hobbyists built their own. Short Wave Craft was a magazine that supported this hobby- it's very much like Popular Electronics or Byte magazine. Always there were sheet metal plans included in the project. Here is an issue of it (pages 51 and 35 have typical chassis plans):

https://www.americanradiohistory.com/Archive-Short-Wave-Tele...

So did hobbyists have access to sheet metal brakes? Not really- they either use a vice and hammer, or bought pre-made chasses from a place called "Blan the Radio Man"- a store in NYC's old Radio Row:

https://en.wikipedia.org/wiki/Radio_Row

https://i.pinimg.com/originals/d5/4f/2c/d54f2c957af5cec29831...

[ Parent | on HN ]

Re:DIY Spectrum Analyzer 0 to 1750MHz (1999) by Hasz on Wednesday January 02, 2019 @01:46PM (#18808790)

If you're working with thin steel sheet, or some aluminums, building your own sheet break is pretty easy to do, even without access to a machine shop.

https://duckduckgo.com/?q=diy+sheet+break&t=ffab&iax=videos&...

It's a much cleaner finish than the hammer+vice combo.

[ Parent | on HN ]

Re:DIY Spectrum Analyzer 0 to 1750MHz (1999) by jhallenworld on Wednesday January 02, 2019 @01:52PM (#18808851)

Also you can get cheap brakes from Grizzly or Harbor Freight.

[ Parent | on HN ]