Behold, jim breeeyar signalled from keyed 4-1000A filament:

Hi,
I am building a tube type SW AM radio frm scratch and need the IF output
transformer that drives the detector. 455kc IF. Anyone help? Jim w1hrm

I have a nice article for you he
http://geek.scorpiorising.ca/455KHz.html

--
Gregg
*It's probably useful, even if it can't be SPICE'd*
http://geek.scorpiorising.ca