[Hammarlund] HQ-170 series question

[Kim Herron]

Hi Gang,
> > Some of the differences between the 170 and 170A.  The 170A
> > had a product detector,
>
>Both radios had a product detector.  Electrically, they are virtually
>identical except for the minor power supply differences.  There may be some
>other minor circuit differences, too ... But nothing that markedly effects
>performance.

         The 170A had fixed BFO injection for SSB detection and in CW 
position the BFO was tunable.
In the 170, the tunable BFO was used for both.  170 has solid state power 
supply and the 170 uses a
5U4 rectifier tube.  170A has 500 ohm audio output as well as 3.2 ohm. Also 
had a socket in the rear to work with
the HX-50 transmitter.  Also had 50 ohm antenna jack in form of an SO-239 
jack as well as the 450 to 600 ohm
barrier strip for the antenna Late 170A's also came with a factory 
installed noise silencer.

Thanks!!

Kim Herron  W8ZV
1-616-677-3706
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