001: FET Dip meter for UHF 430MHz band


As a dip meter was necessary to build 430MHz equipment, I modified a UHF TV converter unit into the 2SK19 colpitts oscillator with a hairpin type of coil which is adequate for 430MHz in 1978. The frequency variable range is 385MHz-520MHz. If the oscillation level difference is outstanding in the range, you should rewind the choke coil to change the inductance value slightly. I remember that I did it over again several times.

The sensitivity could be met and convenience was enough. It came in handy very much in making of coaxial cavity amplifier and K2RIW amplifier etc..




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