[Milsurplus] [MRCA] The Navy MAK project

[Kenneth G. Gordon]

On 18 Jul 2019 at 17:53, Ray Fantini wrote:

>     FT-243 may be more what the oscillator wants, somehow I can´t help but assume that the DC-34 
>     construction has a bucket of internal capacitance due to the big plates and the like. That´s why I 
>     was wondering about maybe padding the HCU-6 a bid but have to wonder what that will do to 
>     the frequency?

Parallel capacitance lowers the frequency: series capacitance raises the frequency, but it 
takes about 10X the amount of capacitance in series, that it does for parallel.

As I suggested, connecting a SMALL capacitance, a "gimmick" will suffice, between the grid 
and plate of the oscillator tube will significantly enhance its ability to oscillate with sluggish 
crystals.

FYI, the "Paraset", which uses a 6V6, does that.

Ken W7EKB