[Hammarlund] HQ-129X - more. Product Detector

[Mark Dinsmore]

Hi Ken. 

I would like to create an external product detector for my HQ-150. I assume it would be similar to what you would create for the 129x. 

Can you recommend a good place, resources to get started?

Mark K7MD

Sent from my iPhone

> On May 29, 2019, at 1:05 PM, Kenneth G. Gordon <kgordon2006 at frontier.com> wrote:
> 
> Another upgrade I intend to do to my own HQ-129X is the install a real product-detector.
> 
> When I did this many years ago to my BC-779, I was amazed at how much quieter and 
> apparently more sensitive that receiver became. It literally blew me away at how much 
> better the receiver worked.
> 
> I used the circuit which Heathkit uses in their SB rigs, a single-triode unit, which, it also 
> turned out, demodulates AM just fine too with the BFO off.
> 
> At that point, I became a very firm believer in upgrading our older receivers with a GOOD 
> PD.
> 
> Ken W7EKB
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