[Hallicrafters] HT-33A Repair

[wa1kbq at aol.com]

Was advised by a well known transmitting tube buyer/reseller the  PL-172's 
are nearly always gassy but the Eimac 8295A's are not.
 
Regards, Greg
 
 
In a message dated 12/17/2009 5:31:57 A.M. Eastern Standard Time,  
Hallicraftersgroup at rogerhalstead.com writes:



John Hensley wrote:
> By spring I should be knee deep  in this repair and would like toexchange 
emails with anyone who has "been  there, done that" regards the HT-33A.  I 
have ordered the Harback  filament & biastransformer as well as the 110V 
version of the soft-start  add on.
> Left to plan out is a replacement capacitor array
Doesn't  that have an oil filled cap?
>  and the rectifiers:either 3B28,  K2AW silicon's or two surplus SS 866A 
replacements.
> Please reply via  private email.  If you've got the same project aheadof 
you maybe we can  share notes.
>   
I think this is a project many would be  interested in.
I rebuilt an HT-33B which is not much different. I decided  to keep the 
mercury vapor rectifiers for originality, but replaced the  tube with an 
8295A version instead of the PL-172/8295A, they are different  physically 
and about a half inch taller. A lot more expensive too if you  have to 
purchase one that is guaranteed. I did not have to replace any of  the 
transformers or chokes.

73

Roger (K8RI)

>  Thanks,
> John                 
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