K-PO MLA 300 Manual

HF Broadband 1.8—30 MHz Linear Amplifier
The MLA300 is a 13.6VDC HF broadband linear amplifier suitable for use in the range
from 1.8 to 30 MHz with a maximum output of 300W, (Av. power), requiring a maxi-
mum input 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 amplifier and its protection circuits. Protection is provided for excessive input
power, excessive output power, excessive load VSWR, out of band operation and exces-
sive temperature. The amplifier may be used either in a mobile / portable or fixed station
installation.
Specifications:
Operation Frequency:
Modulation Types:
Transistor:
Power Supply:
Input Fuse (Internal):
Input RF Power:
Output RF Power:
Maximum bypass power (Amplifier off): 50W
Input VSWR:
Output VSWR Maximum:
WARNING:
all of the information in this manual or at least the quick start guide!!! To
avoid damage or incorrect operation this is extremely important!!!
MLA 300
1.8—30 MHz (160m to 10m bands)
SSB,CW,AM, FM, DATA
4x MACOM MRF455
13VDC+/- 1V 40A
1x40A (Auto)
1-15Wmax (All modes)
300Wmax
1.1—1.5:1
2.5:1
Before using this product please read carefully
(All narrowband modes)