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ParcGwyn · 21st Jan 2018, 3:50 pm

There was homebrew design from the USA (Electronics Now Sept 1996) had a problem with VCO output falling at the low frequency end. The solution was to use the sweep waveform to increase the oscillator collector current at low frequencies.

Dave
GW7ONS

21st Jan 2018, 3:50 pm	#99
ParcGwyn Hexode Join Date: Jun 2005 Location: Aberystwyth, Wales, UK. Posts: 358	Re: Spectrum Analyser There was homebrew design from the USA (Electronics Now Sept 1996) had a problem with VCO output falling at the low frequency end. The solution was to use the sweep waveform to increase the oscillator collector current at low frequencies. Dave GW7ONS