freshmanco: Fresfman Masterpiece 5F4
? freshmanco: Fresfman Masterpiece 5F4
Hi,
I am new to the forum and need a little help. I have a Freshman Masterpiece 5F4, but none of the schematic I can find have the same terminals. The layout that I have is as follows.
AERIAL GROUND A- A+ B- B+ B+AMP
I have built a battery eliminator K101, but need to know the correct voltages before I attch it to the radio.
I belive they should be.
AREIAL = ANTENNA
GROUND = NOT SURE
A- = -5v
A+ = +5v
B- = NOT SURE
B+ = +45V
B+AMP = +90V
If some one could verify the voltage and advise as to the others I would be appricative.
Thanks
RC
To thank the Author because you find the post helpful or well done.
5F4 supply
Aerial = Antenna
Ground = connect with waterpipe (sometimes not required; try !)
A- and A+ = 5 V DC ( originally 6 V storage battery)
B- = 0 V (internally connected with A+)
B+ = 45 V (works between 30 and 70V)
B+Amp = 90 V (do not increase: there is no grid bias!)
Good luck,
KoBi
To thank the Author because you find the post helpful or well done.