[AMRadio] Elmac AF68 mod driver xfmr

[Steve Waters]

Charlie,

I have used the PT-156 also with success. Thanks Bob for posting that link.

Steve / AE4IN

On Tue, Dec 4, 2018 at 11:10 AM Robert Nickels <ranickel at comcast.net> wrote:

> On 12/4/2018 12:22 AM, CL in NC via AMRadio wrote:
> > By any chance, does someone have a AF68 modulator driver transformer
> they can part with?  Does anyone know of a sub for it?  Anyone redesigned
> the 12AU7 driver tube circuit so the plate and cathode drive the modulator
> tubes direct?  Thanks.
>
> Charlie, some re-wire the driver as a phase inverter and eliminate the
> transformer, but for those who want to stay with the original design the
> $17 Hammond PT-156 is equivalent to the old Stancor A-53C and works well:
>
> https://www.tubesandmore.com/products/transformer-audio-interstage-10-ma
>
> 73, Bob W9RAN
>
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