Ramsey Electronics FZ-146 Specifications download pdf (Page 63)

FX-146 • 63

KIT ASSEMBLY PHASE 1:

Stage A: DC Power Regulation & Distribution

Plus Packet Data I/O Connector

Stage B: Receiver Audio Amplifier

Stage CR: Integrated Circuit FM Receiver

Stage DR: Receiver, Tuned RF Input and Preamp

Stage E-F: Transceiver VCO with Buffer Stages

Each set of Assembly Instructions is introduced by an explanation of how

that part of the circuit works and what it is for. LEARN as you build!

ALSO INCLUDED IN THIS SECTION:

Master Kit Parts List

Important Information About Kit Parts and the Printed Circuit Board.

TOOLS AND EQUIPMENT REQUIRED FOR CONSTRUCTION, PLL

SYNTHESIZER ALIGNMENT, & TRANSMITTER ADJUSTMENT

 Medium-heat (25 to 50 watt) soldering pencil with clean, tinned

tip

 Damp sponge to keep soldering tip clean

 Thin diameter ROSIN core solder

 Diagonal cutters or wire nippers

 Wire strippers

 Small pair of pliers

 Small screwdriver

 Ruler

 Tweezers (to install SMT C75)

 Non-metallic alignment tool

 Digital Voltmeter (DVM)

 50-ohm Dummy Load (5-10 watt rating)

 VHF RF power output meter

ALIGNMENT: A feature of the FX design is that Synthesizer Alignment can

be accomplished by listening carefully to a transmitted signal of known

accuracy. To adjust trimmer capacitor C81 "by the numbers," use your

Ramsey Frequency Counter or a digitally accurate VHF receiver with BFO.

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Ramsey Electronics FZ-146 Specifications Page 63