Greetings...
We recently wanted a Signal generator for testing our ISDR during workshops and decided to build a Frequency Oscillator. So we modified the VFO circuit of the GR-40 Receiver and made a FIXED Frequency Oscillator or rather a Signal Generator which gives us a freq of approx. 7.012Mhz. The whole circuit was built in a tin box which we get as complimentary snack box in flights these days.
You can find the circuit for our GR-40 Rx. Tab, on the HOME page where you will find the circuit in the VFO section. Here are the pics of the build:
We recently wanted a Signal generator for testing our ISDR during workshops and decided to build a Frequency Oscillator. So we modified the VFO circuit of the GR-40 Receiver and made a FIXED Frequency Oscillator or rather a Signal Generator which gives us a freq of approx. 7.012Mhz. The whole circuit was built in a tin box which we get as complimentary snack box in flights these days.
You can find the circuit for our GR-40 Rx. Tab, on the HOME page where you will find the circuit in the VFO section. Here are the pics of the build:
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