Description
BLA703: The BLA703 is a new Base station AC powered 500W amplifier for the frequency range 25-30MHz. It features a switched mode power supply that is both lightweight and very efficient and can be powered from 100 to 240VAC. Input power is from 1W to maximum 35W for a maximum output of 500W.
Features:
Base version of the popular RM KL703 with added features. Excessive input power, output VSWR, temperature and out of band transmission protection
Input power is from 1W to maximum 35W for a maximum output of 500W.
With an integrated 15 Volt 60 Ampere power supply, with over voltage, current and temperature protection
The heatsink is large and fed by two 120 mm fans that take air from the front and expel it out of the back. It should be able to sustain long transmission times and be very quiet.
The BLA703 features both high efficiency a large heatsink with two large cooling fans for quiet and reliable operation.
It will have three user selectable power levels like the RM KL703. These are input attenuators and the input must not exceed 30 Watts. The input power is also monitored and will automatically switch the amplifier back to standby if this level is exceeded.
Protection circuits are not 100% guaranteed. To prevent damage to your amplifier always check your VSWR after changing bands, no hot switching, no excessive input power etc.
NOTE: AMPLIFIER IN AS NEW CONDITION
Specifications:
Frequency: 25-30 MHz
Modulation Type: SSB, CW, AM, FM.
Transistor: 16 x RM 3 MOSFET
Power Supply: 230-240 Vac
Input RF Power: 1-30 W max (All modes)
Output RF Power: 550 W max
Input VSWR: 1.1-1.5:1
Output VSWR Max: 2.5:1
Fuse: 10A
Dimensions: L 410 x W 305 x H 175 mm
Weight: 13Kg
NOTE: DO NOT OPERATE AMPLIFIER OUTSIDE FREQUENCY RANGE 25-30MHz (MAXIMUN STARTING DRIVE SHOULD BE 15-20 WATTS)
Pushing it to the max doesn’t make any difference in terms of performance and unnecessarily puts MOSFETs under stress. .
