Tendency of catering: 220V AC
emission at FM: 88~108MHz
Force of expense: max 45W (without the R3),
R3 1KW/10W (for
biggest force in the exit you replace with short-circuit).
C2 30pF trimmer
C4, c6, c9 10nF/1KV
C8 100mF 100mF/450V (Double electrolytic)
C9, c10 10nF
rfc2, rfc3 air Inductors: 15 coils diameter 8mm, from wire 1mm.
T2 Transformer of configuration with being first 4 or
T3 Inductor with core ferrite (externally it resembles with small
transformer but has a turn only).
D1 BY127 rectifier
Lamp 807 SYLV USA or
EL34 or equivalent
ANTENNA Simple dipole L/2. (L= wave length)
switch of catering.
S2 Switch of catering of rise (him we close after
zestacej' the thread).
Most elements you can him find in a old back-white
television with lamps.
With the C2 we regulate the
With the C1 we adapt the resistance of aerial (practically him we
regulate so that it is heard our voice in the radio as long as you become
The catering better it does not become at straight
line from the network 220V but via transformer 220V/220V of isolation and safety
When does not exist the R3, the force of expense is bigger, but
respectively is increased also the hum 50Hz, because the simplicity of
The control (Audio In) can become from a kasseto'fwno or other
powerful source. If it is microphone it will be supposed precedes amplifier so
that it acquires a force of order of 8W roughly.
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