The HRO 500 was my dream receiver as a young guy but unaffordable for a teenager. That one had a digital display and was all solid state. Around 1967 or so. The old building that housed the National Radio plant is still there about a mile from where I live.
Brian Denley
KB1VBF
Sent from my iPad
> On Sep 4, 2017, at 12:32 AM, Vic Rosenthal <
[hidden email]> wrote:
>
> I racked my brain on this (I had an HRO) and the only thing I can think of is that they both have a sort of digital display.
>
> Vic 4X6GP
>
>> On 3 Sep 2017, at 23:12, Fred Jensen <
[hidden email]> wrote:
>>
>> Ummm ... my K3 has a tuning "precision" of 1 Hz, repeatable. It has whatever "accuracy" I set when I calibrate it against WWV.
>>
>> Unfortunately I never had any of the HRO series and only used one a couple of time on FD 150 years ago, so I don't know the answer to the question.
>> *
>> 73,
>>
>> Fred ["Skip"] K6DGW
>> Sparks NV DM09dn
>> Washoe County*
>>
>>>
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