I got bored and connected the radio up to test it.wires everywhere. I used a 6 x AA battery holder and soldered wires to various connections for the bias volts.
I used my valve tester for the 90 volt supply HT2, and the 120 volt supply HT3, and another 0 to 90 volt supply for the 60 volts HT1.
And a Farnell 0 to 30 volt supply for the 2 volts.
It all worked first time, when I eventually remembered to switch the valve tester to "test" to activate the screen and anode supplies.
Terry
The reaction control seems to be doing a very good job as it is with out any additional resistor. It fades evenly and completely to zero volume.
The audio is somewhat scratchy, distorted and muffled, I think I need to take the speaker out and check it, to see if the diaphragm is rubbing.
Ignore the meters on the valve tester they are giving meaningless numbers as there is no valve plugged in.
Mike
p.s. The 630 volt 4.7uF, 2uF & 1uF polyester caps I ordered from China just over 1 week ago arrived today. That's a good service.
I used my valve tester for the 90 volt supply HT2, and the 120 volt supply HT3, and another 0 to 90 volt supply for the 60 volts HT1.
And a Farnell 0 to 30 volt supply for the 2 volts.
It all worked first time, when I eventually remembered to switch the valve tester to "test" to activate the screen and anode supplies.
Terry
The reaction control seems to be doing a very good job as it is with out any additional resistor. It fades evenly and completely to zero volume.
The audio is somewhat scratchy, distorted and muffled, I think I need to take the speaker out and check it, to see if the diaphragm is rubbing.
Ignore the meters on the valve tester they are giving meaningless numbers as there is no valve plugged in.
Mike
p.s. The 630 volt 4.7uF, 2uF & 1uF polyester caps I ordered from China just over 1 week ago arrived today. That's a good service.
