Ramsey Electronics Fx - Ramsey Electronics FX-440 Manual

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
I
Thin diameter ROSIN core solder
Diagonal cutters or wire nippers
] Wire strippers
I
Small pair of pliers
Small screwdriver
] Ruler
I
Tweezers (to install SMT C73, 75A, 758)
Non-metallic alignment tool
] Digital Voltmeter (DVM)
1
50-ohm Dummy Load (5-1 O 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 UHF receiver with BFO.
FX-440 Transceiver Assembly
Phase 1:
Circuit s,tages A through E-F
Copyright 1992
Ramsey Electronics, Inc.
793 Canning Parkway
Victor, New York 14564
Assm. 2
FX-440