[Hallicrafters] P-26 Power Supply

[David C. Hallam]

Well, I had to replace the original caps as they were both very leaky.  
I needed to be able to power up the transverters.  I bought and 
installed a pair of replacements from Tom, N0JMY.  They are insulated 
with a plastic sleeve.  If I had done as you did I wouldn't be concerned 
about safety.  If I can't resolve my concern with safety as they are, I 
may do as you did and replace the new capacitors with ones below chassis.

David
KW4DH

On 6/22/2012 10:20 AM, Carl wrote:
> ----- Original Message -----
> From: "David C. Hallam" <dhallam at knology.net>
> To: <hallicrafters at mailman.qth.net>
> Sent: Friday, June 22, 2012 9:52 AM
> Subject: [Hallicrafters] PS-6 Power Supply
>
>
>> I am in the process of restoring a pair of Hallicrafters transverters,
>> HA-2 and HA-6, and have some concerns about the P-26 power supply.  The
>> HV filter capacitor is a serried pair of 500V rated FP type capacitors
>> which makes one of them floating about 400V or so above ground.  They
>> are mounted above the chassis.  Both have plastic insulating sleeves on
>> them, but there is no cage inclosing the PS.    One solution would be to
>> put it where no person or pet could get to it, but that would be rather
>> inconvenient.  Another solution would be to build a cage for it.
>>
>> I have a great big totally caged 2.5KV Johnson PS sitting right next to
>> the desk and would have no concern if the cat decided to climb on top of
>> it.
>>
>> Am I being overly concerned about the safety of this situation?
>>
>> David
>> KW4DH
> It all depends upon your situation. Ive been running a modified HA-6/PS6 for
> over 25 years as my main 6M station into a modified NCL-2000.
>
> At another bench a HA-6 and HA-2 are set up with another PS-6 and a
> HT-32B/SX-115/NCL-2000/HB copy of 6N2 T-Bolt. I also had a HA-2 modified for
> 220/222 before building SS up to the 110W level.
>
> In both cases the transverters and PS are mounted above the driving radios
> themselves and there have been no incidents with kids, grandkids, pets,
> occassional mouse, bird, etc up to the time I did a recap on both.
>
> Those caps are now around 50 years old and should be replaced.  You can do
> it by restuffing with 500V radial cans and isolate the shell entirely or
> mount below chassis which is what I did.
>
> Carl
> KM1H
>
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