I posted this in another thread, but thought it might deserve it's own topic, so I'm reposting it here.
I've prepared a ZIP file with some of my favorite threads that I saved from TheRadioBoard last fall. The pages are saved as HTML with images and text. Unzip the file, go into the TRB folder, and click on any HTML file to view it. However, the formatting for the pages was apparently not correctly saved, so the page layout will look very ugly. But you can still read the text and see the schematic diagrams.
There are also 3 PDF files in the ZIP -- two on "hybrid feedback" regenerative receivers, and one on a regenerative antenna.
Here's a list of the threads and articles that I saved in that ZIP file:
6AS6 regen, mk2 - The RadioBoard Forums.html
Antenna-attiva_FLS_Barbi-.it.en.pdf
A Shortwave receiver with automatic regeneration control - The RadioBoard Forums.html
A simple superhet - The RadioBoard Forums.html
Audio-based automatic regeneration control - The RadioBoard Forums.html
Auto regen "AGC" - The RadioBoard Forums.html
balanced autodyne mixer - The RadioBoard Forums.html
Balanced autodyne mixer - The RadioBoard Forums.html
Designing class-A solid-state regen w_explicit AAC loop - The RadioBoard Forums.html
Detector Sensitivity Tests - The RadioBoard Forums.html
Free at last! Stable 1.2-volt shortwave superhet. - The RadioBoard Forums.html
hybrid_feedback.pdf
hybrid_theory.pdf
Low-power BJT converter stage for superhet - The RadioBoard Forums.html
Multi-band regenerative loop antenna - The RadioBoard Forums.html
One Transistor Loudspeaker Superhet! - The RadioBoard Forums.html
regen_VFO with reduced feedback dependence on frequency - The RadioBoard Forums.html
Reinartz autodyne mixer for simple SW regen-superhet - The RadioBoard Forums.html
Sinclair's automatic-regeneration circuit (reflex-regen) - The RadioBoard Forums.html
t AAC_limiter regen operation at_above the threshold - The RadioBoard Forums.html
tube+ss discussion, how the throttle capacitor really works? - The RadioBoard Forums.html
ULTRA SIMPLE MEDIUM WAVE REGEN RECEIVER USING ONLY AN LM386 AUDIO AMPLIFIER - The RadioBoard Forums.html
Unusual AM Superregenerative? Receiver - The RadioBoard Forums.html
Valentino Barbi (I4BBO) | The SWLing Post.html
Varactor-tuned, hybrid-feedback, low-voltage BJT regen - The RadioBoard Forums.html
vladn solid state frequency-compensated regen? - The RadioBoard Forums.html
Apart from the articles I saved in the ZIP file, there are also a few old TRB articles still visible in search engines' cached pages. I have uploaded those that I found (and that seemed worth saving) as separate posts here to the forum. Again, these re-uploaded posts will have some incorrect text formatting, but the text and schematics are visible.
This is very nice, thank you very much.