VHF Noise Generator

by radiojamming in Circuits > Electronics

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VHF Noise Generator

vhf noise.jpg

I introduce a simple noise generator that can be used as a VHF jammer.

Schematic

Noise generator.jpg

I found this noise generator circuit:

http://www.wb0smx.net/?p=572

I decided to turn this into a VHF jammer.

I added another stage to the circuit with a power transistor. I found only one type of VHF power transistors in a store near my home, it is the KT606A. According to the datasheet, it's a 350 MHz 2.5W transistor, but with heatsink, the power can be increased a little.

I think the circuit will work with more powerful VHF transistors.

The circuit work well in VHF band, (at least 0.5 meter antenna) but emits very low medium wave noise. I did not test the noise level above FM band.

Video of Operation

Vhf noise generator