Greetings: Still on the Baby Champ NE5002 MW & SW radio. You have the signal generator putting out 455 KHz. ? Change those 3 caps.
@Studyelectron3 ай бұрын
Learning a joy by itself even when you are all alone,music always cheers all around to review and view the words worth ,to fine treat to all🎉
@randomsteve42883 ай бұрын
15:19 You can significantly reduce external IF pickup by using a trap filter in the path from antenna to tuned antenna circuit, or if a ferrite rod is used, between the output of the tuned RF and the mixer tube. Almost any european radio after WW2 made use of that. And if you had done the alignments on the german radios you "fixed" by the book, you would have known for setting the trap is the last step in the RF/LO alignment. Go watch Electronics old and new to see how its done.
@hestheMaster3 ай бұрын
Hum can also come from way out of tolerance carbon comp resistors in the RF or IF stages. Sometimes a weak tube also can cause hum. Check the whole radio out for these conditions, as it is always the best service technique on a radio that is this old. Duh.