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BLA703
HF 25—30 MHz Linear Amplifier
Specifications:
Operation Frequency:
Modulation Types:
Transistor:
Max I/P Current:
Power Supply:
Input Fuse (Internal):
Input RF Power:
Output RF Power:
Maximum bypass power (Amplifier off): 50W max
Input VSWR:
Output VSWR Maximum:
Harmonic Output:
Dimensions:
Weight:
WARNING:
Before using this product please read carefully all of
the information in this manual or at least the quick start guide!!! To avoid dam-
age or incorrect operation this is extremely important!!!
Ver 1.1 Feb. 2024
25—30 MHz (10m Amateur HF Band)
SSB,CW,AM, FM, data etc (All narrowband modes)
16x RM 3 MOSFET
10A / 120V. 6A 230/240Vac
110-120V or 230-240V Model specific
10A or 6A (5x20mm Fast)
1-30W max (All modes)
550W max
1.1—1.5:1
2.5:1
>-50dBc 25-30MHz
410mm x 175mm x 305mm
13kg
Quick Start Guide:
A more complete guide to the installation is featured later
1.
Connect the RTX input connector to transceiver with
50 Ohm patch cable.
2.
Connect the ANT Output of the Amplifier to VSWR
Bridge / Wattmeter (If required), and then the ATU (If
required) then the Antenna (50 Ohm load Impedance).
3.
Make sure that the amplifier AC switch is switched
off.
4.
Connect the Amplifier AC power cable to the AC Net-
work. Pay attention that you have the correct BLA703
model for your countries AC voltage.
5.
Adjust the Transceivers RF output power to 10 W
(30W max)
if it is capable of more than 30W output
6.
Switch on the Amplifier. After a short boot period
press the STB /OPR button until the LED turns green,
'Operate mode'.
7.
Try a brief transmission to check that the antenna
VSWR is acceptable with the amplifier in use. Any
large increase in VSWR indicates that the Antenna is
not suitable for the power being used. Operation
should be halted immediately to avoid damage to the
Amplifier / Radio / ATU etc.
8.
If everything is OK you can increase the input drive
and / or change the output power level to suit your
output power requirements.
2
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Table of Contents
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Related Manuals for RM Italy BLA703
Summary of Contents for RM Italy BLA703
- Page 1 Make sure that the amplifier AC switch is switched off. Connect the Amplifier AC power cable to the AC Net- work. Pay attention that you have the correct BLA703 model for your countries AC voltage. Adjust the Transceivers RF output power to 10 W...
-
Page 2: Front / Rear Panel Description
Installation: Front / Rear Panel Description Unpack the amplifier from it’s shipping carton and inspect for any signs of damage. The ampli- fier should be installed in a place that allows good ventilation and provides a suitable base to support it. Failure to allow for reasonable ventilation will cause the amplifier to overheat and shutdown prematurely. -
Page 3: Antenna Considerations
BLA703 and then return to ‘Standby’ and back to The exact time for transmission in these modes will depend on numerous factors such as, how ‘Operate’. - Page 4 ‘Operate’ to ‘Standby’ then back to ‘Operate’ The BLA703 features an input attenuator that may be used to reduce the output of the ampli- fier if the drive radio does not have the facility to reduce its output power.
-
Page 5: Error List
It is calibrated so that LED 20, (the last column), is set to approximately 550W. Above this level the BLA703 will enter into excessive power protection. 1 2 3 4 5 6 7 8 9 10 11 12 13 15 16 17 18 <25W... -
Page 6: Warranty
Attention: Notes: The use of Linear Amplifiers are controlled by specific laws within the country of use. These laws must be known to the user and are entirely the responsibility of the user. The manufacturer declines any responsibility from unlawful use. Warranty: This product is covered by a 24 month warranty commencing from the date of purchase.
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