User's Manual

2-12 Keep the aluminum heat sink and air openings free from dust
and blockages. Periodic cleaning will prevent degraded cooling
efficiency.
2-13 For long continuous operation in RTTY/FM modes, it is
recommended you reduce the RF drive levels by 20% to 30% lower
output than CW/SSB modes.
2-14 To prevent damage to the precision electronic components,
avoid extreme physical shock to the amplifier. If factory service is
required, the amplifier MUST be shipped using the original box and
packaging materials.
3. Features
3-1 Our solid-state broadband design engineers worked to make
the HL-2500KFX, the lightest and most compact 1.5 kW amplifier in
the industry. This world-class compact 1.5 kW amplifier is the
easiest to handle and operate.
3-2 The amplifier is equipped with a newly developed band
decoder. The amplifier’s decoder changes bands automatically as
the data signal is received from the associated HF transceiver’s
frequency bands.
3-3The amplifier’s main PA section includes 6 high power MOS FET
THP2933’s by Microsemi, resulting in 1.5 kW PEP (SSB max.). The
amplifier’s broadband characteristics require no further tuning once
the operating band is selected.
3-4 The amplifier allows operation in full break-in CW mode due to
the use of the amplifier’s high- speed antenna relays (made by
Panasonic).
3-5With the unique duct structure design and the powerful blower
fan, the aluminum heat sink block for RF PA module (and other
components), are effectively cooled. The fan’s quiet operation allows
for even the weakest DX signals to be heard.
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