[Hallicrafters] EXT :Re: SX-100 (and SX-96) microphonics

[Jim Wilhite]

After my experience with an SX 100 and many hours of chasing the 
microphonic problems including everything mentioned but put it on foam, 
I decided you can't put lipstick on a pig and sold it.  Poorest designed 
receiver I ever had for such an expensive one.

Jim/W5JO




----- Original Message ----- 

> Clean the crud (dirt and grit) out of the bearing races on the main 
> and BS caps, use alcohol or acetone then repack using moly grease..
>

>
> I own a late SX-100 MK2A and have rebuilt dozens but havent 
> experienced any
> microphonics outside of a bad tube or bad ground connection under the
> chassis.
>
> They all have a somewhat flimsy chassis which results in poor 
> mechanical
> stability. Soldering the spring brass variable cap wipers to the 
> chassis
> helps...as it does in many sets of all brands...but its not a complete 
> cure.
>