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Toroids, Ferrites, Parts, Kits, Toroid King, QRP Erector Set edit / delete
Good selection of cheap toroids, including sets for a couple of LPF designs. Shipping looks reasonable, provided you don't get clobbered for import duty...
to electronics radio shopping toroid ... on 25 June 2011
CuteSDR Open-Source Application NOW AVAILABLE MacOSX , Linux, and Windows edit / delete
A simple SDR receiver. This is closer to the sort of interface I'd like; maybe some hybrid between LySDR and this...
Restoration of Valve Communications Receivers edit / delete
Really good overview.
to electronics radio retrotech valve ... on 25 June 2011
Handy HRO links, including how to date them (although I'm not entirely convinced that the various sites agree on this).
to electronics hro radio retrotech ... on 25 June 2011
HRO Sr. Restoration edit / delete
W1UJR rebuilds an HRO Senior (which looks very like the other one he did, fortunately).
to electronics hro radio retrotech ... on 25 June 2011
HRO 5 Restoration edit / delete
Neat rebuild of a 5TA1. Good shots of the underside layout; his was only lightly modified and he's rebuilt it along the original lines.
to electronics hro radio retrotech ... on 25 June 2011
Various radio restorations, including an *extremely* ratty HRO-5. This has a good shot of what the front panel's meant to look like on an unmodified HRO-5.
to electronics hro radio retrotech ... on 25 June 2011
HRO Dial Remove/Adjust edit / delete
Removing and refitting the HRO dial.
to electronics hro radio retrotech ... on 25 June 2011
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tasty by Adam Sampson.