[Hallicrafters] SX-28 snipped wire puzzle

[Julian Bunn]

Thanks Nick ... I've also had excellent feedback (sorry for the pun) from
others in PMs. The consensus seems to be to restore the connection!

Julian

HallicrafterSX28 at aol.com wrote:
> In the 1950's Hallicrafters came out with a modification to the Noise  
> Limiter circuitry  on the Sx28.The original circuitry  consisted of  a LAMB Noise 
> silencer and a SHUNT limiter connected across the second  detector load .The 
> modification was to replace the shunt limiter with a SERIES  type of limiter 
> which does a more effective job (very similar to the one used on  the SX42). I've 
> installed one on one of my early run Sx28's(which didn't have  the shunt 
> limiter) ,and does a great job especially when listening at night time  much better 
> than the shunt type limiter.
>  
> As far the snipped wire goes that is defintely a modification to the 2nd IF  
> circuitry .All runs of the SX28 (including the SX28A) followed the same  
> technique for the 2nd IF(as a comparison of schematics of both types will  reveal). 
> I would do a more careful check to see what other modifications were  
> made,and check if the XTAL filter is working as it should.For its time the  circuit 
> is way ahead of its time  and accounts for the legendary  selectivity of the 
> SX28, a tribute to Bob Samuelson and his team.
> Nick
>   
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