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Programmable Calculators: PPC Notes edit / delete
Volume 12 issue 1 contains a long article on testing TI-59s.
to calculator retrotech ti-59 ... on 06 October 2007
Datamath Calculator Museum edit / delete
The history of TI calculators. Includes instructions on how to rebuild TI-59 battery packs, which I'll need to do with mine to make it usable without the printer.
to calculator retrocomputing retrotech ti59 ... on 06 October 2007
A Tribute to Honeysuckle Creek Tracking Station edit / delete
Lots of detail about HSK's role in the Apollo programme.
Phil's Old Radios edit / delete
Lots of interesting detail on how he does restorations.
to electronics radio retrotech tv ... on 11 August 2007
Various electronics projects -- very professionally done. The stuff about the SI570 DDS is particularly interesting, since I haven't seen it mentioned elsewhere and it's much easier to deal with than most DDS chips.
to dds electronics ham oscillator radio retrotech vco ... on 05 August 2007
The Old Calculators Web Museum edit / delete
Includes lots of detail about how early EM and electronic calculators worked -- for example, the algorithms they used to do intrinsic functions efficiently. Might be worth looking at for small maths libraries.
to maths mechanica retrocomputing retrotech ... on 01 August 2007
John Honniball's Home Page edit / delete
Some fun retrocomputing/retrotech stuff.
to retrocomputing retrotech ... on 21 July 2007
DIY Loudspeaker Projects edit / delete
A very large collection of articles on DIY loudspeaker design and construction, with many different drivers and cabinet designs represented, and lots of interesting (largely audiophile-free) discussion of how to evaluate them. The vintage speaker/driver/crossover upgrades are particularly interesting.
to audio electronics loudspeakers retrotech speakers woodwork ... on 21 May 2007
WW II Codes and Ciphers edit / delete
Lots of detail about and period documents from Bletchley Park.
to cryptography retrotech ... on 29 April 2007
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tasty by Adam Sampson.