Operating instructions

REAR PANEL CONTROLS AND CONNECTIONS
P.A. BIAS Potentiometer, AUX RELAY jack, CW KEY
jack, Outboard VFO Connector, HEAD PHONES jack,
Fuse Holder, Antenna Connector, Jones plug Power con-
nector, S-Meter Zero.
FREQUENCY RANGES
28.0-28.5 MHz
28.5-29.0 MHz
29.0-29.5 MHz
29.2-29.7 MHz
26.96-27.26 MHz (Receive only)
(
OTHER CONTROLS AND CONNECTIONS
Carrier Balance Control. Located on bottom Cover.
VOX CONNECTOR. Located on side of the chassis.
POWER INPUT
Single Sideband, Suppressed Carrier:
260 watts, P.E.P. minimum
CW: 180 watts, DC input
AM: (Single Sideband with Carrier):
60 watts DC input
DISTORTioN
Distortion products down approx. 30 db.
UNWANTED SillEBAND SUPPRESSION.Unwanted
sideband down more than 50 db.
VACUUM TUBE COMPLEMENT
J' VI l2BA6 VFO Amplifier
V2 l2BE6 TransmitterMixer
V3 6GK6 Driver
V4 6LF6 Power Amplifier
V5 6BZ6 Receiver RF Amplifier
V6 l2BE6 Receiver Mixer
V7 l2BA6 First IF Amplifier
V8 l2BA6 Second IF Amplifier
V9 l2AX7 Product Detector/Receive Audio
VlO 6A V6 AGC Amplifier/Rectifier
VII 6GW8 AF Output
V12 l2BA6 100 KC Calibrator
V13 6JH8 Balanced Modulator
V14 l2AX7 Microphone Amplifier
CARRIER SUPPRESSION
Carrier suppression greater than 50 db.
RECEIVER SENSITIVITY
Less than 0.5 microvolt at 50 ohms impedance for signal-
plus-noise to noise ratio of 10 db.
TRANSISTO R COMPLEMENT
Ql 2N706 Oscillator
Q2 2NS130 Buffer
Q3 2N706 Carrier Oscillator
AUDIO OUTPUT AND RESPONSE
Audio output, 3 watts to 3.2 ohm load. Response essen-
tially flat from 300 to 3000 cps in both receive and
transmit.
POWER REQUIREMENTS
117 V AC, S0-60 Hz at 4 amps. (208-220-240 volt, SO-
60 Hz at 2.S amps., export model). 12-14 volts DC oper-
ation with model l4-A converter unit plugged into back
of 10118. Current drain: 8 amps, receive mode. 12
amps average with voice modulation, 2S amps maximum
in TUNE position.
TRANSMITTER OUTPUT
Wide-range Pi-network output matches resistive loads
from 50 to 75 ohms.
METERING
Power amplifier cathode current 0-400 ma. on transmit,
S-Meter 0-70 db over 59 on receive, Relative Output in
TUNE-CW.
DIMENSIONS
Height
Width
Depth
5*- in.
13 in.
11 in.
FRONT PANEL CONTROLS
A.F. GAIN, R.F. GAIN, Sideband Selector, Function
Switch (CAL REC. TUNE-CW), Meter Switch, Tuning
Dial, Dial Set, SPOT Switch, ANL Switch, P .A. LOAD,
P.A. TUNE, Band Switch, CARRIER INSERTION,
DRIVER Control, MIC jack, MIC.GAIN.
WEIGHT
Weight
241bs.
2
~,., =::.c
Downloaded by
RadioAmateur.EU