[Boatanchors] replacing oil filled capacitor in Viking II ?

[David Stinson]

Bought two Viking IIs at a local auction and
have them both working.
On that 8mFd cap: If it goes bad, you can
replace it with regular hi-Temp electrolytics
in series with equalization resistors across them.
> Speaking of this capacitor:  8 mFd is really
> too low if you plan to use the rig on phone.
> The 8 mFd (C9) and the HV choke (L1) are
> reactive at audio frequencies, effectively adding
> a variable resistor in the HV supply during
> modulation and attenuating audio lows.
> To improve this, one  can add
> capacitance to C9 up to about 20 or 25 mFd
> total.  Two 25 uFd at 450V (quality Hi-Temp)
> with 100K equal. resistors across them in series
> will do the job.   If this list allows photos,
> I'll attach one of how I added 10 mFd 1000V
> poly cap across the 8 mFd C9.
>
> Don't add a lot more, because it
> can over-current the rectifiers and the transformer
> during charging cycles.  When I hear someone
> say that adding 250 mFd to a HV filter "can't hurt,"
> it gives me the itchies...
> GL OM ES 73 DE Dave AB5S


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