[R-390] More Info about the 3TF7 replacement using a high efficiancy switching regulator

[sigmapert]

Hi,

as Tisha Hayes already stated there is no magic with this device. Here two links to:

a) the location of the 3TF7 and the 3TF/ replacement within the circuitry in the R-390A:

http://schmid-mainz.de/3TF7/01.jpg

b) top and bottom view of the small printed circuit board (not yet wired to the 9 pin miniature
base) as contained in the housing of the device:

http://schmid-mainz.de/3TF7/02.jpg

73 sigmapert, DH3PJ