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37-630T RF and IF grid 3
#3

boy, am i missing something. i don't even see an IF grid resistor [which grid, by the way??]. except the one on grid 2 which is labeled on the schematic as 51K ohms to ground. i do see that "the that the RF amp has grid bias and the IF amp has cathode bias developed by the 400 ohm resistor in the cathode circuit." but i read 700 ohms on the IF cathode resistor, not 400 [just a typo?]. and the schematic says 15 ohms from the grid cap to ground, not 51K. but regardless, i'd like to know why the IF grid 3 is coupled to the IF transformer, which isn't common at all on the relatively few radios i've looked at.


Messages In This Thread
37-630T RF and IF grid 3 - by fenbach - 07-21-2022, 03:01 PM
RE: 37-630T RF and IF grid 3 - by RodB - 07-21-2022, 04:08 PM
RE: 37-630T RF and IF grid 3 - by fenbach - 07-21-2022, 10:05 PM
RE: 37-630T RF and IF grid 3 - by Ron Ramirez - 07-21-2022, 10:27 PM
RE: 37-630T RF and IF grid 3 - by RodB - 07-22-2022, 01:50 PM



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