[ARC5] Product detectors - the name.

[Kenneth G. Gordon]

On 11 May 2017 at 14:27, K5MYJ wrote:

> I just checked the manuals for the Collins 75A-3 and 75A-4.
>  
> The 75A-3 was sold as an AM/CW/FM receiver. The 75A-4 was sold as an AM/SSB/CW receiver.
>  
> The 75A-3 did not have what we now call a product detector.
>  
> The 75A-4 had both diode(AM) and product(SSB/CW) detectors.
>  
> To me the 75A-4 is the first receiver I know of to be designed for SSB.

Did that pre-date the National NC-109?

Ken W7EKB

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