So it appears if the local oscillator in a radio is not working, that you can use a signal generator to substitute an oscillator frequency to allow the radio to work again?
So, you use the audio generator to simulate a working oscillator? Then If the radio plays when using the audio generator ( acting as the oscillator), the radios oscillator is faulty.
I can conrfirm my oscillator is working. However all I hear is the oscillator while tuning through the band. Here's a video of what I'm experiencing: m.ua-cam.com/video/AzgGhgffXVI/v-deo.html. Any insight is appreciated.
Great Video and sound.. that camera is doing a great job.
Thank you.
Great, thanks for this. Your final point, what *should* the amplitude be? Im using a digital function generator which defaults to 5vpp.
It depends on the radio, start low and work up.
Low being..? (the lower limit of my particular generator is 4mvpp)
If 4mv is not low enough put a volume control on the output of your generator.
So it appears if the local oscillator in a radio is not working, that you can use a signal generator to substitute an oscillator frequency to allow the radio to work again?
Thank you. Yes taht is correct!
Nice video...where would you hook this to in an transistor radio...???
Connect to the base of the mix/osc transistor.
Great video!!!!
Thanks
So, you use the audio generator to simulate a working oscillator? Then If the radio plays when using the audio generator ( acting as the oscillator), the radios oscillator is faulty.
The station that comes the strongest was around 60. The generator is on X10KHz so that is 60X10,000 = 600,000Hz
Rich, Thank you very much.
Mike N1CHP
Thank you.
I just cant get this to work...I want to try it on a Silvertone 2015...can you show me where to connect this up...thanks...
Should be able to connect to the oscillator variable capacitor, that's the smaller one.
what do you have the volume of the radio set at
A little less than half volume.
I can conrfirm my oscillator is working. However all I hear is the oscillator while tuning through the band. Here's a video of what I'm experiencing: m.ua-cam.com/video/AzgGhgffXVI/v-deo.html. Any insight is appreciated.
Sounds like bad electrolytic capacitors