10-19-2018, 08:18 PM
thanks folks,
chas mentioning the IF cans reminds me that i may be lucky to still be picking up signals. so to speak. me, not the radio, that is. I fried the low voltage side of the first IF transformer by attaching a scope probe to contact 3 of the first IF coil = grid of V2 [as i recall] and connecting the ground clip to the ground side of the external antennal loop. baffling to me. of course, i'd be glad if someone could explain why the low voltage side of the IF transformer blew. i heard a pop and saw a puff of smoke. ebay to the rescue. i am using my isolating transformer now!
for what it's worth, i put on a polarized plug with the hot wire connected to the switch but did try reversing the plug. still hummed.
chas mentioning the IF cans reminds me that i may be lucky to still be picking up signals. so to speak. me, not the radio, that is. I fried the low voltage side of the first IF transformer by attaching a scope probe to contact 3 of the first IF coil = grid of V2 [as i recall] and connecting the ground clip to the ground side of the external antennal loop. baffling to me. of course, i'd be glad if someone could explain why the low voltage side of the IF transformer blew. i heard a pop and saw a puff of smoke. ebay to the rescue. i am using my isolating transformer now!
for what it's worth, i put on a polarized plug with the hot wire connected to the switch but did try reversing the plug. still hummed.
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