[HBR] HBR Chassis Kit continued or not : )

[Ian Wilson]

I took a quick look at the HRO-500. I don't think this is a Wadley loop.
It's double conversion (apart from the LF bands, which upconvert to
26.<something>MHz). The synthesizer looks like a real bear. Would
NOT like to try to restore one of these!

73, ian K3IMW

On Mon, Apr 20, 2015 at 9:13 AM, Tom Dailey <radio at daileyservices.com>
wrote:

> Recently, at a hamfest, I purchased a home-brew Wadley Loop receiver,
> built by a fellow (here in Colorado).  With 4 tubes, it's astoundingly
> sensitive, STABLE, and relatively selective.  Considering that some of the
> RACAL high-end receivers (and the National HRO-500) used this scheme, it's
> pretty well proven.  As a friend once put it "The Ancients weren't stupid -
> they were just ancient!"
> Tom - W0EAJ
>
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