Showing posts with label Lewallan -- Roy. Show all posts
Showing posts with label Lewallan -- Roy. Show all posts
Monday, September 23, 2024

Ham Radio -- How To Build Stable Oscillators

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Spasibo Vasily!   Wow, thanks a lot Todd.   There is some great wisdom in your video.  You clearly demonstrate that it is possible to build ...
4 comments:
Wednesday, May 1, 2024

KE5HPY Builds a QRP Transmitter

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  FB Chuck, very cool.  Please send us more reports on this rig.   Chuck has been on the blog many times, with many projects:  https://solde...
1 comment:
Monday, April 29, 2024

Old Tricks, Lore, and Art -- Freezing and Baking our LC VFOs -- An Example from Cuba

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Pavel CO7WT explained why Cuban hams used a process of thermal endurance to improved the frequency stability of their homebrew rigs:    ----...
5 comments:
Wednesday, April 26, 2023

Retro QRP Rigs of the 1960's, 70's, and 80's -- Video by Mike WU2D

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It is time to put aside (again!) all of the heated ideological arguments about the power level that defines "low power."  Just sit...
3 comments:
Saturday, October 15, 2022

DC Receiver: 100db Gain? Diplexer? VFO in a box?

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Here is a progress report on Direct Conversion Receiver developments. Dual Tuned Circuit, Diode Ring with Diplexer, PTO VFO from Farhan...
8 comments:
Wednesday, May 17, 2017

Homebrew History is Made: Farhan @ W7ZOI

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Thanks to Wes W7ZOI for sending me the link to his page describing the visit of our friend Farhan.  I think this visit was a historic gath...
14 comments: