[Hallicrafters] PS-6 Power Supply

[Carl]

----- 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