Ladybird radio
A couple of months back bought a copy of the Ladybird "Learnabout... Making A Transistor Radio" book from the local Oxfam shop and set about rebuilding the radio I'd built back in the 80s. This book, and the radio I built from it were probably the two things that really got me interested in electronics and technology in the first place.

Now I have a working radio using parts dating from early 1940s to mid 2000s, built on a wooden plank that's at least a hundred years old, all based on a design published in 1972. If they ever do turn off analog transmissions, then I'll build a little medium wave transmitter just so I can carry on using this radio.
( speedyballbangpots, Mon 8 Nov 2010, 13:07, 2 replies)

If they turn off medium wave...
... rewind the coil with a bit less wire so it tunes up to 1.6 to 2MHz and listen to the 160m amateur band, and the old LF "trawler band". You might need to make a BFO to demodulate CW and SSB transmissions.
(gordonjcp, Mon 8 Nov 2010, 13:47, closed)

MW to HF
That's definitely an option. The radio is a regen so no BFO required. I'm planning on updating the design a little, so I don't have to go and scavenge OC44s and OC71s from old dead radios (or ebay). I've already got the audio amp reworked to use 2n3906s, so just the regen transistor to go. Sticking with PNP devices for at least a little bit of a retro feel.
( speedyballbangpots, Mon 8 Nov 2010, 16:47, closed)