[R-390] REF xfmr for SSB converter

[Pete Williams]

Per my post...  thanks to those  who responded ... pending further checks by
the helpers !   It is of interest to note that after removal  and  checking
the secondaries .

I was  surprised to find that   resistance to frame seemed to  vary  .

Where one might expect to read  megohms readings  around the 25 -290 K  mark
were noted on both DVM  and  analog meters .

Further  checks with the meter reading Volts , the  eyebrows went further up
!--- secondaries and line input to frame were measuring 0.090 mV.

Maybe there is  corrosion within (the Xfmr is potted)  and some electrolysis
taking place.... it made the  ohms readings  somewhat meaningless .

 

Other xfmrs behaved  sensibly as a cross check. Probably par for the  course
for  1956 production...

No wonder the AC input -line was contributing to the  fire works .

Comment  appreciated .

Cheers 

Pete  VK3IZ