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M1KTA's QRP ham radio blog: HRO-5 underside
A nicely-restored example.
to electronics hro radio retrotech ... on 04 March 2012
In New York -- but they ship internationally. They have National valve sockets and knobs...
to electronics hro radio shopping surplus ... on 21 November 2011
Excellent overview -- wish I'd found this sooner. This cleared up the serial numbering oddity I'd spotted. (In retrospect, I had seen this site a long time ago...)
to electronics hro radio retrotech ... on 03 August 2011
Index of /pub/manuals/national
HRO docs from BAMA.
to electronics hro radio retrotech ... on 03 August 2011
Also includes a one-EF91 productor detector mod for the HRO.
to electronics hro radio ... on 01 August 2011
Lots of old radios. Includes two modified HROs, one in a fetching shade of blue.
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
W1UJR rebuilds an HRO Senior (which looks very like the other one he did, fortunately).
to electronics hro radio retrotech ... on 25 June 2011
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
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| 13 | retrotech |
| 1 | shopping |
| 1 | surplus |
| 1 | transmitter |
tasty by Adam Sampson.