INTRODUCTION TO THE FR146 FM RECEIVER
Most Ramsey kits can be classified as “Skill Level 1”. That means that our kits are intended to be sucessful for
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This receiver is a good project for amateurs wishing to become more familiar with 2 meter FM before choosing a transceiver, or for those active on 2 who want an inexpensive receiver to take on trips, keep in a briefcase or to watch for band openings.
Before beginning the project or even studying the circuit description, it is worthwhile to develop some prior respect for how much receiver is packed onto the circuit board. The nine semiconductor devices (diodes, transistors and IC chips) give the equivalent of about 30 or more transistors diodes. And, in addition to four inductors, a crystal and two ceramic filters, there are nearly 60 capacitors and resistors. Surely, all that should result in a decent receiver! You could easily spend twice the money plus hours of time trying to gather the equivalent parts from catalogs and still need to make your own circuit board.
BUILDING YOUR FR146 KIT
There are just over 200 solder connections on the FR146 printed circuit board. That means your work could be 99% excellent and you could STILL have 2 or 3 cold solder points or solder bridges. Since this circuit is more sophisticated than a
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FR146 • 4