|NOTES||An RF signal generator ideal for aligning radios and Band
Covers six ranges :-
|Thanks to Max Jens Jensen for supplying a copy of the instructions and circuit. You can download a copy in .PDF format from the service data page.|
A little scratched and grimey.
With the HT rectifier removed,
a variable D.C. supply was used to reform the main electrolytic smoothing.
At ~200V, leakage was ~600uA which, in the absence of the manual, doesn't
seem too unreasonable.
With mains supplying power for the valve heaters and the HT
rectifier still removed, the HT
was gradually wound up to 200V and the outputs connected to a 'scope.
The reward was a nice modulated RF
signal and only about 10mA HT current.
|WHERE FOUND||Spring 2001 Radiophile auction.|
Chassis view with RF oscillator cover removed
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