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Category: Flashback In Time

Heathkit Scope 1980

Back when Heathkit still made great kits, 1980. Some would have dreamed of owning one of these, others might have been lucky enough to have had one.

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Posted on May 6, 2019May 6, 2019 by Rob PowellPosted in Flashback In TimeLeave a comment

Flashback 1968: Swan 500C

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Posted on April 30, 2019 by Rob PowellPosted in Flashback In TimeLeave a comment

Wire Wrap Tool

Its not something I have ever used, or plan on for that matter. But at one time, wire wrapping was a thing and people even build computers like this back in the day. Could you imagine how hard it would be to fault find in that mess. HAHAHA.

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Posted on April 23, 2019 by Rob PowellPosted in Flashback In TimeLeave a comment

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  1. Jack Margolis on Double Balanced Cross Coupled Product DetectorJune 15, 2022

    Rob, I'd like to try this circuit as the mixer for a direct conversion receiver. I also have some 12…

  2. loren on RF SamplerMay 30, 2022

    thanks a million I seen the schematic but with the dots on it wasnt sure of the resistor values thanks…

  3. Rob Powell on RF SamplerMay 28, 2022

    There is a schematic at the top of the page that has the part values on it. The 2 grounds…

  4. loren on RF SamplerMay 28, 2022

    just wondering since theres no parts list those are 6 x 65kK resistors or is it 6 x 1.65k resistors…

  5. Rob Powell on DDS VFO CW ExciterMay 25, 2022

    Its a common library found on the web. I think AD7C was the first to bring one out. Google him,…

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