[mikethedruid]

First of all, use this data sheet.   https://philcoradio.com/library/download...20Book.pdf     which can be found in the library of this site. If you look at the table about the alignment, you will notice the first column says where to input the signal, to the grid of the 6A8G, meaning the CONTROL grid, i.e. the grid cap, through a .1 mfd condenser, with the wire to the cap removed for aligning the IF frequency. The other signals for aligning the RF frequencies are injected through the antenna connection through a 100 mmfd condenser.