[jstaf40]

hope you can help i have a eico 324 with cables i have the schematic for philco 46-1226 and the manual for eico the problem is the manual it is very hard to understand i know where to put the probe i just know which one to use it has audio out
and rf on right with a 2 prong plug the radio has a hum and i would like to inject a 455 hz to the test points i tried the rf just got a louder hum hope this makes since
john

[Radioroslyn]

Have you tested the generator to see if work? Set the band switch to the band that cover the broadcast band. Set modulation for internal (this will give you a 400cy tone) Set rf output for max. Set the frequency on the generator to 1400kc and tune a working receiver to the same.Connect the generator output(cable on the right)to the antenna post of the receiver. If it is working you will hear a 400cy in your receiver.
If you want to eject a signal into the IF,though a small cap hook it to the plate of mixer tube. Be careful as there is HV at this point
You may want to deal with the hum problem first.
Terry