Heathkit HD-1250 - Table of Contents; Introduction

Page
2
TABLE
OF CONTENTS
Introduction
2
Parts List
3
Step-by-Step Assembly
Assembly Notes
13
Detector
Circuit
Board
14
Oscillator
Circuit
Board
17
Chassis
20
Top Panel
Assembly
26
Initial
Test
29
Oscillator
Installation
31
Side Panel
Assembly
34
Final Adjustment
35
Trimmer
Adjustment
36
Calibration
37
Final
Assembly
3g
Operation
42
Applications
47
In
Case
of
Difficulty
53
Troubleshooting
Chart
gO
Specifications
62
Circuit
Description
63
Circuit
Board X-Ray
Views
! . ! 64
Circuit
Board
Voltage
Charts
9&
Diode-Transistor
Identification
Chart
66
Schematic.
.
(fold-out
from
page)
67
Warranty
Inside
front cover
Customer
Service
Inside rear
cover
INTRODUCTION
Your
Heathkit
Solid-State
Dip Meter can
be used to determine
the
approximate
resonant
or operating
frequency
of either
energized or
de-energized
circuits in
the frequency
range
between
1.6 and
250
MHz.
In the oscillation
or
injection
mode, you may
use
the Dip Meter
to determine the
resonant frequency
of
tuned
circuits
or as a variable signal
source
to align receivers.
In the absorption
mode,
it
will locate sources
and frequencies
of RF
energy. It
is also valuable for
locating
sources of
parasitic oscillations
and harmonics.
You
can select
any of
the seven
frequency
ranges
by using
the appropriate
plug-in
coil.
Its size and
battery-powered
circuit make
the Dip Meter
completely
portable.
Two
circuit
boards are
used
to
provide
compactness
and ease of
assembly.
Two
transistors
and
two hot-carrier
diodes
are used
in
the
all-solid-state
circuit.
To help
in
both transportation
and storage,
a molded
carrying
case is provided for
your convenience.
Refer
to the "Kit
Builders Guide"
for information
on tools, wiring, soldering,
resistors,
and
capacitors.