[AMRadio] 183D vs 303 ?

Alan Cohen acohen at texas.net
Tue Oct 3 09:36:21 EDT 2006

The NC-183 and NC-183D are essentially bandswitched versions of the  
HRO-50 and HRO-60.  The difference between the HRO-50 and 60 is that  
the 60 uses double conversion on higher bands.  Similarly, the  
NC-183D uses double conversion while the plain old NC-183 does not.   
All four receivers have a pair of push-pull 6V6's in the output.   
These receivers were designed before single sideband became popular,  
and did not have product detectors.

The NC-300 and 303's were designed with ssb in mind.  They both have  
single-ended audio output stages, selectable sidebands, and product  


On Oct 3, 2006, at 9:04 AM, Todd, KA1KAQ wrote:

> On 10/2/06, Peter Markavage <manualman at juno.com> wrote:
>> NC-183D is general coverage.
>> NC-303 is ham band only.
> Maybe Pete or others can confirm this as I have neither receiver
> currently, but I *think* the 183 has push-pull audio outpoot, 303 does
> not. Which isn't a huge deal, depending what you want to use it for.
> the 183 sounds nice on broadcast/music/hi fi AM.
> ~ Todd  KA1KAQ
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