Sir Elton . . . . .

I'm 'jes referrring between two threads and " consuming " that your Zee-nuts radio referred to on this thread is the 6S556.

I can't visualize that IF alignment being capable of shifting the range ALLLLL the way up to 670 from 455, which would be minimal capacitance being set on the IF transformers adjustments.
When you get the 455 test signal coming on thru the unit O.K. at 455, then if you still find that the 1500 Khz " received station" is coming in at 1250. There would be excessive capacitance in the setting of "J" broadcast padder adjustment.

As you then progressively DECREASE its capacitance value, (decreasing the compression of the leaves of trimmer ) the received station should then " walk" its position on up the dial scale towards that required 1500 Khz setting.

Then you check back at the low end of the band to see if earlier set 640 alignment is still in congruence .

If not, you work between the two adjustments, ( oscillator shunt trimmer "F" for the low frequency tracking), and the "J" padder for the high end of the BC band tracking, until the 2 adjustments balance out . ( Those adjustments will be s- t -r -e- t- c -h- i- n -g or compressing the stations placemnents across the dial scale.)

73's de Edd

I always wanted to be a procrastinator, but I just never got around to it.