Lafayette hb 625 owners manual

Page 1

MODEL HB-625

23-CHANNEL
SOLID STATE 5-WATT MOBILE
2-WAY CB RADIO

FEATURING

IRCUIT
c

Electronic Miracle of
the Space Age

Three New Revolutionary Integrated Circuits

Revolutionary new electronic devices that are the ultimate
in miniaturization and reliability, Each no larger than a tiny
transistor, yet housing a complete circuit with many tran-
sistors, diodes and resistors. Provides improved perform-
ance in far less space-assures reliability for years to come.

Unique RF Noise Silencer

Super quiet RF Noise Silencer literally chops out ignition
noise-even really weak signals become perfectly readable
under the most severe noise conditions!

Unlike other simple noise limiting circuits. the RF Noise
Silencer employs a multi-stage circuit to actually silence
the receiver for the brief duration of each noise impulse.
You get spectacular reduction of ignition noise with no
distortion, no audible holes and no volume reduction.

Page 2

SPECIFICATIONS

RECENER

CIRCUIT TYPE ..

SENSITIVITY .............. . ....... . . . . .

SELECTIVITY . . . .......................
INTERMEDIATE FREQUENCY . . . . . . . . . . .
AUDIO OUTPUT............. ...........

AUXILIARY CIRCUITS................

TRANSMITTER

DC POWER INPUT .... ............. .. .
RANGE BOOST.........................
CARRIER DEVIATION. . . . ........ . . . . . ..
HARMONIC SUPPRESSION ......... . . . . .
ANTENNA MATCHING ............. . . . . .
GENERAL

SEMI-CONDUCTORS . . . . . . . . ............
POWER SUPPLY. ....... ... .....
ACCESSORiES .....

. . . Dual conversion superheterodyne; Crys-

tal frequency synthesizer p r ov i d e s 23
crystal-controlled transmit and receive
channels.

0.7uV for 10 db 5+ N to N ratio at 30%
at 1000 cps modulation.

6 db down at 6 Kc; 45 db down at 28 Kc.

. lst IF: 11.275 MC. 2nd IF: 455 Kc.

3 watts into ext. spkr. jack.

(1) 3-stage RF noise silencer (on-off).

(2) Full-time automatic noise limiter
(audio).

(3) Crystal-controlled fine tuning(delta).

(4) Adjustable squelch

(5) 455 Kc mechanical filter.

(6) "S" meter/RF power.

5 watts

Yields high average modulation at aver-
age voice levels (90% typical),

Not greater than t 800 cps on any channel
(exceeds FCC requirements).

. Exceeds FCC requirements.

Nominal 50 9 (may be used with 30-1009
antennas).

3 Integrated circuits, 18 transistors, ll
diodes.

11.5 to 14.5 volts DC, negative or posi-
tive ground (with internal switching).

(1) Push-to-talk dynamic microphone.
(2) DC power cable

(3) Mobile mounting bracket.

(4) Microphone clip.

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