Dr. Schmidt,

It looks like the KST10 is the surface mount version of the KSP10.? It has the same specs as the MPSH10.

Marco - KG5PRT

On Mon, Mar 12, 2018 at 10:01 AM, K9HZ <bill@...> wrote:

Perfect Glenn.? Now if we can find current SMD parts to replace the 3904’s in place, this is a very nice upgrade.?

Dr.?William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ

?

Owner - Operator

Big Signal Ranch – K9ZC

Staunton, Illinois

?

Owner – Operator

Villa Grand Piton - J68HZ

Soufriere, St. Lucia W.I.

Rent it:

email:??bill@...

?

On Mar 11, 2018, at 11:02 PM, Glenn <glennp@...> wrote:

I completed my mockup of the PA driver stages.

as previous post:

• used MPSH10's in all stages.?
• Used FT37-43 toroids all wound with 10 turns 0.25mm wire either tri- or bi-filar according to original Sch.
• Bypassed all emitter resistors with a 220pF cap.
• swept from C80 input to T10 secondary (as wound)

Result is a very flat response. Better than 1db from 3Mhz to 54MHz.

glenn
vk3pe

<uBITX_PA_driver_stages_all emitter res bypassed with 220pF 120318.jpg>