P & H Electronics LA-500M Spitfire Amplificador
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Modelo:
LA-500M Spitfire
Data:
1963
Categoria:
Grupo:
Descrição:
RF Linear Amplifier
Informação
The Spitfire has been designed as a compact portable or
mobile RF linear Amplifier capable of operating at 1000
watts PEP input SSB. Features In this new compact design
permit ease of operation and compatabillty with the many
transceivers nov on the market. When used with the DC to DC
power supply, model PS-1000B, the unit becomes a kilowatt
mobile lieear Amplifier. When used with the model PS-1000
A.C. Power Supply, the LA-600H becomes a compact table top
SSB kilowatt Amplifier. No internal changes are required
'when going from the AC to DC power supplies; thus the unit
may be quickly removed from the vehicle for base station
operation*
DESCRIPTION
The Spitfire utilizes six Inexpensive type 12JB6 tubes, high
mu-trlode connected, in grounded grid circuitry. A 70 ohm
pad is provided across the input to present a more constant
load Impedance to the exciter. The pi-network features
pre-set Antenna loading for each band 80 through 10 meters,
permitting simplified tuning of the Amplifier. Relay
switching functions are provided'to connect the exciter to
the Amplifier input; and the Amplifier output to the Antenna
when transmitting; and to connect the Antenna back to the
exciter or Transceiver while receiving. This relay can be
actuated by the VOX circuit in the exciter used* This
eliminates the need for two coaxial relays normally required
when a Transceiver Is used with an Amplifier. The aircraft
type post light is used for meter illumination and as a
pilot light. Since the unit was designed for continuous
handling, the cabinet and handle are chrome plated to retain
their appearance.
The radical departure from conventional construction permits
free air convection- cooling of the components and Amplifier
tubes, thus eliminating the necessity of a cooling fan. The
1/8 inch aluminum support plate for the tubes serves as a
heat sink, keeping the base seal temperatures low. A zener
diode in the DC cathode path provides Amplifier bias. Bias
generated In this fashion is ripple free and stable under
the variable loads imposed by SSB type of operation. The 1/8
inch aluminum rear panel serves as a heat sink for the zener
diode.
Tipo de manual:
Serviço e Manual do Usuário
Páginas:
14
Tamanho:
3.77 Mbytes (3948787 Bytes)
Idioma:
english
Revisão:
ID de manual:
Data:
1963 01 01
Qualidade:
Documento Scaned, a leitura parcialmente mal, não parcialmente legível.
Data de upload:
2017 01 01
MD5:
e17ce8257d1a000459b7e3cf08760679
Downloads:
452