Circuit's Blog :
Return to Blog88-108 MHz VHF FM Band Preamplifier by 2N3819 FETs
Posted Jan 25, 2012 at 12:06 pm
Figure 1
This circuit is a VHF (Very High Frequency) preamplifier for the band two spectrum tuning approx. 88 – 108 MHz.
The 2N3819 FETs are connected in cascode mode in the circuit. The lower one operates in common source mode and the other one operates in common gate mode. The preamplifier provides full high frequency gain. Additionally the lower FET is tunable allowing a peak for a particular radio station.
The coil details are given in the circuit page.
Read More:www.zen22142.zen.co.uk/Circuits/rf/band2pre.htm
Comments on this post:
Featured Products
Sullins Connectors
Wire-to-board interconnection options from Sullins feature a wide range of sizes and applications
MCC Voltage Suppressors
MCC’s TVS series high-power suppressors protect sensitive components from voltage spikes and transients
Bourns RS-485 Eval Boards
Evaluation boards that streamline evaluating circuit protection on RS-485 serial device ports
2 years ago: as simple as this circuit and you can make your own FM radio...whala!
2 years ago: this is way too easy to build! I hope it is also easy to buy all the components :))