HLA 300 Black
HF Broadband 1.8—30 MHz Linear Amplifier
The HLA300 is a 12VDC HF broadband linear amplifier suitable for use in the range
from 1.8 to 30 MHz with a maximum output of 300W (Av. power) with a maximum in-
put drive of 15W, it has been designed to be used with transceivers with 10W outputs but
can be used equally well with any transceiver capable of producing 1 to 15W output. It
uses 4 RF power transistors in two parallel push pull circuits biased in class AB. There
are 6 Low Pass Filters with cut-off frequencies of 3,4,5,8,15,22 and 31MHz that greatly
reduce unwanted harmonic output to acceptable levels that may be selected manually or
automatically. It features a microprocessor that controls all of the functions of the ampli-
fier and its protection circuits. Protection is provided for excessive input power, excessive
load VSWR and excessive heat sink temperature. The amplifier may be used either in a
mobile / portable or fixed station installation.
Specifications:
Operation Frequency: 1.8—30 MHz (160m to 10m bands)
Modulation Types: SSB,CW,AM, FM, DATA (All narrowband modes)
Transistor: 4x RM SD1446
Power Supply: 13VDC+/- 1V 40A
Input Fuse (Internal): 4x10A (5x20mm Fast)
Input RF Power: 1-15W (All modes)
Output RF Power (max): (280W)
Maximum bypass power (Amplifier off): 100W
Input SWR: 1.1—1.5:1
Output SWR Maximum: 2.5:1
WARNING: Before using this product please read carefully
all of the information in this manual or at least the quick start guide!!! To
avoid damage or incorrect operation this is extremely important!!!
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