09-20-2025, 02:49 PM
Hi Bridkarl,
I have used scopes for very specific jobs and have not used one to align a radio, but the following article gives an interesting perspective:
https://www.edn.com/scope-bandwidth-rise...e-of-five/
For sinusoidal waves (What you would be looking at if aligning an AM radio), a 15 MHz scope would accurately display sine waves up to 3 MHz, which should be good enough for broadcast band. I am not even sure that you need dual trace. If you were to need to align an FM set, then all bets are off. IF on an FM set is typically 10.7MHz, and you need a "sweep" generator. Take this into consideration when you find the vintage FM set that you MUST have. (Never say never.)
I have used scopes for very specific jobs and have not used one to align a radio, but the following article gives an interesting perspective:
https://www.edn.com/scope-bandwidth-rise...e-of-five/
For sinusoidal waves (What you would be looking at if aligning an AM radio), a 15 MHz scope would accurately display sine waves up to 3 MHz, which should be good enough for broadcast band. I am not even sure that you need dual trace. If you were to need to align an FM set, then all bets are off. IF on an FM set is typically 10.7MHz, and you need a "sweep" generator. Take this into consideration when you find the vintage FM set that you MUST have. (Never say never.)
"Do Justly, love Mercy and walk humbly with your God"- Micah 6:8
"Let us begin to do good"- St. Francis
Best Regards,
MrFixr55
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
