Introduction
The RM Italy BLA350 Plus is a fully automatic compact 300W HF linear Amplifier, that
builds on the success of the previous model. It now features a hardware protection circuit for
output impedance mismatch that is lightning fast ensuring the safety of the power transistors in
the event of high VSWR on the antenna connector. The RF deck has been improved as have
the output band filters. Frequency coverage is from 1.8MHz to 30MHz covering the following
bands, 160, 80, 40, 30, 20, 17, 15, 12 and 10m Amateur radio bands. It utilises two 50V
MACOM MRF 150 MOSFET Transistors in Push Pull configuration, (Class AB). It may be
used on all narrow band modes of transmission e.g. SSB,AM,FM, CW, RTTY, FT8 etc. It fea-
tures a dual MCU controlled variable speed cooling system, a large analogue output power
meter and a 2 line 16 character LCD display that displays the amplifiers operating parameters,
such as frequency, filter selection, temperature and allows quick navigation of the amplifiers
menu system. Attention to correct operation and operating the amplifier within its operating
capabilities will ensure optimum performance and many years of trouble free use.
Specifications
Operating Frequency:
160,80,40,30,20,17,15,12,10m Amateur radio bands
60m band with reduced harmonic attenuation
No Tx <1.5MHz & >30MHz
Operating Modes:
SSB,CW,AM,FM,RTTY,Data All narrow band modes
Input Power:
1-12W max
Output Power:
300W max
Harmonic Output:
>-50dBc
Drain Voltage:
48Vdc
Drain Current:
15A max
Input Impedance:
50
unbalanced
Output Impedance:
50
unbalanced
RF Transistor:
MACOM MRF150 Matched Pair
Amplifier configuration:
Class AB Push-Pull
Cooling:
Temperature regulated forced air cooling
Microprocessor:
Microchip PIC 18F4620
Metering:
Output Power, H/S Temperature, Band in use, Amplifier state
Protection:
Input Power, Filter Error, VSWR, Temperature, Frequency
I/P—O/P Connections:
UHF SO-239 (Low loss Teflon insulator), PTT input - RCA / Phono,
ALC output - RCA / Phono.
AC Power:
207-244Vac 3.5A max
Dimensions:
355 x 155 x 270mm (Width x Height x Depth)
Weight:
13.5kg
Supplied Accessories:
AC Power cord
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Summary of Contents for BLA350 PLUS
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