Beko HPP-432 User manual

HPP-432
Instruction for use

Thank you for purchasing the HPP-144 preamplifier from BEKO
Elektronik. The HPP- 432 is the highest through power rated
preamplifier available today with an RF handling capability of up
to 2 kW.
HPP-432 Specifications
NF: 0.5 dB (Typ.)
Gain (FIXED) 10 - 20 dB.
RF Power Rating: 2.0 kW CW, SSB, Digital Modes
Operating Voltage 13.8 - 15.0 VDC
Current: 900 mA
Voltage Feed: Via coaxial cable or via a separate
shielded cable.
The HPP-432 has been designed t o interface directly to the
BEKO linear amplifier series. Your BEKO linear amplifier will
provide the proper sequencing of your preamplifier if connected
as outlined later. Preamplifiers such as the HPP-432 fall in the
category of unprotected preamps meaning they are not RF-
sensed preamplifiers. This means that if you transmit
into the preamplifier without switching it out of line first you will
damage the preamplifier. Some radios when keyed will put out
an RF spike up to the maximum power output of the radio.
While the HPP offers some spike protection, using the radio’s
PTT to key the linear amplifier and letting the linear amplifier
sequence the preamplifier is not recommended.
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Use of the HPP-432 with multi mode radios:
The following procedure is recommended and guarantees that
you will never damage our preamplifer by inadvertinely
transmitting into its back end. We recommend that a foot switch
be employed to key the BEKO linear amplifier via the PTT input
phono jack located on the back panel of the linear amplifier. use
the “Aux” jack which provides a sequenced ground on transmit
to key your radio.
Powering your preamplifer
There are two ways to power your preamplifier:
1. Via the coaxial cable
2. Via a separate shielded cable connected to the SO239 jack.
Wire +13.8 VDC to the center pin wire ground to the connector
shell
HLV-550, -770, -1100 and -1470 Instructions:
These HLVs can provide the necessary voltage to power the
HPP-432 via the coax cable. In order to do so, you must wire
PIN 4 to Pin 2 located in the DIN control plug. To avoid a DC
voltage drop caused by resistance of the antenna cable used,
select an appropriate cable size especially at distances >100 ft.
or >30 meters.
When using external feed the necessary sequenced + 15 VDC
voltage can be obtained on PIN 4 of the DIN Control Plug.
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Use of unprotected preamplifiers with external
transverters
The same rules that apply to multimode transceivers do not in
most cases apply to the use of the BEKO HPP-432 ultra low
noise preamplifier when used with an external transverter. The
following procedure is followed. The HF radio’s PTT can be
used to key the BEKO linear amplifier. Use the” AUX” out
phono jack to key the transverter.