Hy-Gain Afterburner 419 Installation & Operation Instructions

.-AFTERBURNER
MOBILE STATION 12V DC
BI-LATERAL LINEAR AMPLIFIER
This Bi-Lateral Amplifier is precision built, compact amplifier of
advanced design. It utilizes an integrated circuit, two tubes, four
transistors and four diodes and a grounded grid, tuned plate
circuit for amplication for AM, FM, CW, and SSB signals in the
25-54 MHz range.
A special feature of the Amplifier
change over relay which
connections making it perfect for operation with low power
transceivers not having external amplifier control circuits.
Another feature is that this unit amplifies the received signal,uti-
lizing an integrated circuit amplifier.
Variable plate tune and load capacitors offer impedance matching
for maximum output to varying antenna loads in the 40-70 ohm
range.
~The Bi-Lateral Amplifier has been designed and constructed
suppress radiation that may cause television interference. TVI
problem has been given full consideration in design and layout of
the chassis.
There are, however, some types of TVI that cannot be prevented
within the amplifier. This is particularly true in weak signal areas.
In such cases, a good commercial low pass filter is recommended.
Height
Width
Depth
Net Weight
Shipping Weight
Construction
Power Requirement
Frequency Range
Types of Emission
Power Output (Slightly less at 50 MHZ)
.~
Amplification of Received Signal
Drive Requirement to Trigger Antenna Relay
Max Drive (unmodulated carrier)
Odd Order Distortion Products
Harmonic Suppression
ORDER NO.
419
is the automatic antenna
operates without special external
103/8"
Lightweight aluminum chassis
with rugged steel case
+12-14V DC
15 Amp
25-54 MHz
AM, FM, CW, SSB,DSB
220 Watts
PEP, SSB, or DSB
100 Watts (with 3.5 watts drive)
15 Watts
30 db below peak output
2nd Harmonic at least
35 db below peak output
INSTAllATION
OPERATION
AFTERBURNER
Rura I Route 3
Lincoln. Nebraska
Input Impedance (unbalanced)
Output Impedance (unbalanced)
Antenna Switching
Tube and Diode Complement
Cable Connector Data
() Carefully remove the amplifier from the packing carton.
EX::lmine it closely for signs of sh ipping damage. Remove the four
screws holding the top cabinet and remove all hold-down tape
and packing materials. Check to insure tubes are seated in the
sockets. Install the plate caps on the tubes and the fuse in the
holder. Inspect for any signs of internal damage.
to
The unit is made to operate on negative ground systems
only. Do not attempt to operate your amplifier until you have
read the manual and properly installed t he unit.
() The location is' not critical but consideration must be given to
adequate ventilation.
Allow at least 4" of clearance
for good air circulation.
4 1/8"
7 1/8"
() The primary power connection on the amplifier is the +12V
5 Lbs.
DC terminal on the rear panel.
8 Lbs.
() The fuse holder is provided on the hookup cable with a 20
amp fuse. Do not use a larger capacity
transformer, and power supply will not be protected.
() The unit will
recommended that a No. 12 or heavier wire be run from the
ground terminal on the amplifier to the ground terminal on the
battery.
() The bi-Iateral amplifier will work with the common antenna
systems designed for the 25-54 MHz range provided the antenna
has a resistive input impedance between 40-70 Ohms. The SWR
should be kept to a minimum of 2:1 or less.
() The output connector provided is an So-239. For connection
of your antenna, you will need a PL-259 plug.
20 db
1 Watt
ON-OFF Switch
AM-FM & SSB Switch
&
INSTRUCTIONS
68505
nominal, less than 2: 1 VSWR 25-54 MHz
nominal, Adjustable 40-70 ohms, nonreactive
Automatic provided by
RF sensing network
4 Transistors, 4 Diodes
1 Integrated Circuit
Input and Output
require MIL PL-259
IMPORTANT
on all sides
fuse or amplifier,
not operate without grounding.
Controls +12V DC power to amplifier
Adjust delay constant of automatic
50 Ohms
50 Ohms
2 Tubes
of the cabinet
It is
antenna relay