02-25-2006, 12:24 AM
Scott,
Yes, that would be correct. If you choose the resistor route, a good choice would be a 10 ohm/10 watt.
But if your only concern is volume from the tone of the signal generator in the speaker during alignment, then an easier route would be to simply turn down the volume control of the radio. Yes, the Philco alignment instructions say to set volume control at maximum, and so do those of most other manufacturers, but this is not necessary. Turn it down to a comfortable level for your ears, or to a point where you can get some meaningful reading on your output meter.
On modern superhet receivers, you don't need to set the volume control at maximum as it says in the alignment instructions. These instructions are a holdover from the "old days" of early radio, where the volume control changed the operating point of the RF amplifier tubes.
You will have no problems in aligning your 37-650 with its volume control set at mid-point, or even lower. But regardless of where you have the volume control set, definitely adjust the attenuator of your signal generator for the lowest possible output sufficient to give a meaningful reading on your output meter.
Poston
Yes, that would be correct. If you choose the resistor route, a good choice would be a 10 ohm/10 watt.
But if your only concern is volume from the tone of the signal generator in the speaker during alignment, then an easier route would be to simply turn down the volume control of the radio. Yes, the Philco alignment instructions say to set volume control at maximum, and so do those of most other manufacturers, but this is not necessary. Turn it down to a comfortable level for your ears, or to a point where you can get some meaningful reading on your output meter.
On modern superhet receivers, you don't need to set the volume control at maximum as it says in the alignment instructions. These instructions are a holdover from the "old days" of early radio, where the volume control changed the operating point of the RF amplifier tubes.
You will have no problems in aligning your 37-650 with its volume control set at mid-point, or even lower. But regardless of where you have the volume control set, definitely adjust the attenuator of your signal generator for the lowest possible output sufficient to give a meaningful reading on your output meter.
Poston
