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The Siltronix Model 1011 B Single Sideband Transceiver is
designed to be used in SSB, AM, or CW modes in the 10
meter amateur radio band. In addition, the 1011 B is also a
tunable receiver in the CB band.
Power input exceeds 260 watts, P.E.P., on single sideband,
60 watts on AM, and 180 watts on CW. The Modell 011 B
includes automatic gain control (AGC),automatic level control (ALC), and grid block keying.
The internal AC power supply permits fIXed station or portable operation wherever 117 volts, 50-60 Hertz is available.
Export models for 208-220-240 volts are available on spe-
cial order.
For 12-14 volts DC operation in mobile, marine or portable
applications, a DC converter unit, model14A is available. It
attaches to the back of the 1011 B in place of the AC power
cord connector. Its dimensions are only I ~ x 3 x 4 in.
The Model 1011 B generates a single sideband signal by
means of a crystal lattice filter, and the transceive operation
automatically tunes the transmitter to the received frequency. Provisions are included in the transceiver for oper.ation on either upper or lower sideband.
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)
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 connector, S-Meter Zero.
OTHER CONTROLS AND CONNECTIONS
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.
CARRIER SUPPRESSION
Carrier suppression greater than 50 db.
Carrier Balance Control. Located on bottom Cover.
VOX CONNECTOR. Located on side of the chassis.
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
RECEIVER SENSITIVITY
Less than 0.5 microvolt at 50 ohms impedance for signal-
plus-noise to noise ratio of 10 db.
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
TRANSISTO R COMPLEMENT
Ql 2N706 Oscillator
Q2 2NS130 Buffer
Q3 2N706 Carrier Oscillator
transmit.
POWER REQUIREMENTS
TRANSMITTER OUTPUT
Wide-range Pi-network output matches resistive loads
from 50 to 75 ohms.
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.
METERING
Power amplifier cathode current 0-400 ma. on transmit,
S-Meter 0-70 db over 59 on receive, Relative Output in
TUNE-CW.
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.
DIMENSIONS
Height
Width
Depth
WEIGHT
Weight
5*- in.
13 in.
11 in.
241bs.
2
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GENERAL
The installation of the Siltronix 1011 B is not at all difficult,
and it involves only the placement of the transceiver in its
operational area (fixed or mobile); connection of power
(either 117 volts AC, or 12 volts DC); and the connection
of an antenna. The following paragraphs are therefore
devoted to the installation requirements involving micro.
phones, fIXed and mobile operation, and recommended
antenna types. Before actual installation, be sure to check
for possible shipment damage. Remove the cabinet (three
screws on each side), and check to make sure that all tubes
are fIrmly in place. Remove packing from around the P .A.
tube. -_.
MOBILE INSTALLATION
DC CONVERTER, MODEL 14A
For 12-14 volt DC operation in mobile installations, it will
be. necessary to use the 14A converter, which plugs directly
into the back of the IO11B in place of the AC power cord.
MOBILE ANTENNAS
FIXED INSTALLATION
Wcate the 1011B in an area which is well ventilated and
which provides complete operational freedom of the front
panel con trois. Connect the AC power cord to the 12 pin
Jones connector on the rear panel. If the 1011 B is a 117
volt model, plug the power cord into a standard 117 volt
50-60 Hz outlet having a capacity of at least 10 amps. If
the 101 I B is an Export model, it should be first set to the
proper voltage tap: 208, 220, or 240 volts, 50-60 Hz. Re-
move the cabinet, and locate the terminal strip near the top
of the power transformer. There are 3 terminal lugs and a
decal which indicates the voltage tap for each. Connection
has been made to the 220 volt tap at the factory. If your
supply voltage is 208 or 240 volts, unsolder the red wire
and move it accordingly.
FIXED ANTENNA
A standard PL-239 coax connector plug will fit the antenna
connector on the rear panel of the 1011 B. For feed line
runs up to 50 feet, RG58 or RG59 is recommended. For
longer runs, RG8 or RG 11 produces less line loss, particu-
larly on 10 meters.
The standard type mobile antennas designed for 10 meters
or CB band will perform well with the 101 lB. Generally
speaking, a full length 8 or 9 foot whip will be more effi-
cient than the shorter inductively loaded types.
MICROPHONE
The microphone input is designed for high impedance
microphones only. The choice of microphone is important
for good speech quality, and should be given serious consideration. The crystal lattice filter in the transceiver provides all the restriction necessary on audio response, and
further restriction in the microphone is not required. It is
more important to have a microphone with a smooth, flat,
response throughout the speech range. The..microphone
plug must be a standard % in. diameter three contact type.
The tip connection is for push-to-talk relay control, the
ring connector is the microphone terminals, and the sleeve
is the common chassis ground. The microphone manu-
facturer's instructions should be followed in connecting
the microphone cable to the plug. Either hand-held or desk
type microphone with push-to-talk control will provide a
suitable installation. For VOX operation, this feature may
be disabled, if desired, by opening the microphone case and
permanently connecting the contacts which control the
microphone.
CONTROL FUNCTIONS, FRONT PANEL
!
i
Any of the common antenna systems designed for use on
the 10 meter amateur band will work well with the 1011 B.
However, the amateur should consider an antenna system
which best fits his operational requirements. For example,
a rotatable beam antenna is usually best suited for DX operation. Methods for constructing antennas and antenna
tuners are described in detail in the ARRL Antenna Hand-
book and similar publications. It is recommended that
these publications be consulted during the design of any
antenna system.
POWER ON-OFF SWITCH (On AF GAIN control)
Turns power supply On and OFF.
FUNC110N SWITCH (CAL. REC. TUNE-CW)
Calibrate -All voltages are applied to receiver.
Grounds cathode of V12. Dial adjustment can be
made at any 100 KHz point on the dial.
Receive -All voltages are applied to receiver. Normal
position for Push-to-talk or VOX operation of
transceiver.
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ALTERNATE
BRACKET
LOCATION
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TWO # 12-24
HEX HEAD
SCREWS ~
SEAT
TRANSMISSION
MOBILE MOUNTING, SIDE VIEW
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8
HUMP
ALTERNATE
MOUNTING
,
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># 10 x 3/4
Mf:l' A L
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FRONT BRACKET
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.REAR BRACKET.
IIIIII
PLUGS INTO SLOT'
MADE BY FLAT WASHER
BETWEEN CHASSIS AND
BOTTOM COVER
TRANSCEIVER, BOTTOM VIEW
#6 x .5/16 SCREWS,
'+ PLACES.
,
.
.
.
FIGURE 1. MOBILE MOUNTING ON TRANSMISSION HUMP UNDER DASH
4
TUNE-CW -Transmitting circuits are energized.
CIS02 is disconnected from ground, shifting the
carrier frequency into the Cuter passband. Carrier
is fully inserted. P .A. ca thode resistor, R406 is
switched in the circuit, reducing input power.
Transmitter is tuned in this position. CW trans-
missions made in this position.
MIC. GAIN
Controls potentiometer R1404 in the grid of V14A,
and controls amount of audio to the balanced modu-
lator.
R.F. GAIN
Controls variable resistor RS05, common in the grids
of Receiver Mixer, V6; RF amplifier, V5; LF. Amplifiers, V7 and V8.
A.F. GAIN
Controls potentiometer R1101 in grid circuit of AF
output, VII, and controls audio volume.
MAIN TUNING
Controls C1608 in frequency determining tank cir-
cuit of VFO.
DRIVER
Controls C2A and C2B in plate tanks of transmitter
Mixer and Driver.
P .A. TUNE
Controls C407 in Pi-network to tune fmal power
amplifier plate to resonance.
P .A. LOAD
Controls C408 in Pi-network to match impedance of
output load. Tunes input to Receiver RF. Amplifier.
BAND SWITCH
Switches tank coils and associated capacitors in VFO,
VFO Amplifier, Driver, and Transmit Mixer.
Sideband Selector Switch
L5B -Receive and Transmit on Lower Sideband.
USB -Receive and Transmit on Upper Sideband.
AM REC. -Receive AM signals. (Insert carrier with
Carrier Insertion control to transmit.)
ANL Switch
Automatic Noise Limiter
SPOT Switch
Inserts carrier for AM tuning in REC position.
Meter Switch
Reads cathode current in P.A. CATHODE position.
Reads S-UNITS in S-METER position. Reads RELA-
TIVE OUTPUT in S-METER position when Function
Switch is in TUNE-CW positi.on.
DIAL SET
Dial adjustment can be made at any 100 KHz point
with Calibrator on.
MIC
Microphone plugs into this jack.
CONTROL FUNCTIONS, REAR PANEL
P .A. BIAS
J. Adjust idling current for P .A. Tube. (40 ma.)
A'JX RELAY.
12 volts DC for auxiliary relay control.
CW KEY
CW key plugs into this jack.
ANTENNA
Antenna feedline (50 .75 ohm) plugs into this
connector.
FUSE HOLDER
4 amp fuse.
EXT OSC
Model 508 or 51 OX external VFO connection.
HEADPHONES
Headphones plug into this jack. Disconnects internal
speaker.
S-METERZERO
Adjust S-Meter to zero with antenna disconnected.
POWER CONNECTOR .
AC power cord plugs in to this connector. Model14A
DC converter plugs in to this connector for mobile
operation.
FIGURE 2. SILTRONIX MOPEL 10118, REAR VIEW.
~
;
;:
5
Before connecting any cables to the Siltronix lOll B transceiver, perform the following steps:
<D Locate the P.A. compartment and remove the packing
material from the P.A. tube.
0 Carefully adjust the DRIVER and the P.A. TUNE
controls for maximum receiver noise.
NOTE
CD Rotate the Function Switch to the REC. position.
0 Rotate the AF GAIN control counter clockwise to
operate the power switch to the OFF position.
(4) Rotate the CARRIER INSERTION control full
counter clockwise to the minimum position.
CONNECTIONS
-0) Connect a wire from earth ground to the ground stud
located on the rear of the chassis. This is not essen-
tial, but is strongly recommended.
Q) Connect a 50 or 75 ohm antenna feed.line to the
coaxial connector on rear panel. A 50 ohm dummy
load may also be used.
0 Connect the AC power cable to the Jones connector
on the rear panel.
(9 Connect the AC power cable to the proper voltage
.source.
The DRIVER control resonates the transmitter
driver stages and the receiver RF amplifier
plate circuit. The P.A. TUNE and P.A. LOAD
controls adjust the input and output capacitors
in the transmitter power amplifier final plate
circuit, as well as the receiver RF amplifier grid
circuit. Proper adjustment of these controls in
the receive position will result in approximately
resonant conditions in the transmitter stages.
RECEIVER TUNING (88B)
Precise tuning of a single sideband signal is very important.
Do not be satisfied to merely tune until the voice can be
understood, but take the extra care of setting the dial to the
exact spot where the voice sounds natural. Above all, avoid
the habit of tuning so that the voice is pitched higher than
normal. This is an unfortunate habit practiced by quite a
number of operators.
The following points help to explain the effects of mistuning:
I WARNING_]
Dangerous high voltage is present on the plate
of the power amplifier whenever the power
supply is energized.
RECEIVE OPERATION
CD Rotate the A.F. GAIN control clockwise to about the
3 o'clock position. The power switch will operate,
applying voltage to the transceiver. The dial and
meter lights should illuminate.
@ Wait approximately one minute to allow the tube fIla-
ments to reach operating temperature. During this
waiting period, perform the following steps:
a. Rotate Frequency Range switch to desired range.
b. Rotate Tuning Dial to desired frequency.
c. Rotate MIC. GAIN fully counter clockwise.
d. Set P.A. TUNE control to 12 o'clock position.
e. Set DRNER control to 12 o'clock position.
f. Set P .A. LOAD control to 12 o'clock position.
g. Rotate RF GAIN control to 3 o'clock position.
h. Place SIDEBAND SELECTORswitch in USB mode.
1. If you tune so the received voice is higher than normal
pitch, you will then transmit off frequency, and your voice
will sound lower than normal pitch to the other station. He
will probably retune his dial to make you soun'd right. If
you keep this up, you will gradually waltz one another
across the band. If both of you are mistuning to an unnatural higher pitch, you will waltz across the band twice as
fast. (And someone will no doubt be accused of frequency
drift.)
2. Mistuning results in serious hannonic distortion on
the voice, and should be quite noticeable to the average ear.
Some will claim that if they don't know how the other person's voice actually sounds, they can't tune him in properly,
but this is not true. With a little practice, it will be fairly
easy to tell. Some voices are relatively rich in harmonics,
and are easier to tune in than a person with a "flat" voice.
Also, a transmitter, which is being operated properly with
low distortion will be easier to tune in than one which is
being over-driven and is generating excessive distortion.
There is no mistaking when you have a station tuned right
on the nose. It will sound just like "AM" so to speak.
Mainly, avoid the habit of tuning so everyone sounds higher
than normal pitch, or like "Donald Duck". This is incor-
rect, unnecessary, and sounds terrible.
6
exactly the same frequency as the one to which you are
listening.
TRANSMITfER TUNING STEPS3. Your Siltroni.x 1011B will automatically transmit on
CD Make the following preliminary adjustments:
4. If it is desired to receive on lower Sideband, rotate
the SIDEBAND SELECTOR switch to the LSB position.
RECEIVER TUNING (AM)
Refer to the RECEIVE OPERATION paragraph above, and
perform all the steps.
CD After adjusting the DRIVER and the P .A. TUNE con-
trols for maximuIJ\ receiver noise, rotate the SIDE
BAND SELECTOR switch to the AM REC. mode.
@ Rotate the tuning dial until an AM signal is heard.
-0 Pl~.'?! the SPOT switch in the ON (UP) position. This
removes the bias from the carrier oscillator, allowing
the carrier to be heard in the receiver.
0 Zero beat the carrier with the tuning dial.
@ Turn off the SPOT switch.
@ The AM station should be on frequency, with excel-
lent voice reception.
TRANSMITTER TUNING
I CAUTION I
READ CAREFULLY. BE SURE THAT YOU
UNDERSTAND AND REMEMBER THESE
NOTES WHEN TUNING THE TRANSMITTER.
I. The most important detail to keep in mind when tuning the transmitter portion of your Siltronix 1011 B is that
the P.A TUNE control must be resonated as quickly as
possible.
2. The P.A. tube is dissipating all the power input when
it is not in resonance, and can be permanently damaged in
just a few seconds.
3. Once resonance has been established, the P.A tube
can operate at full power input for quite a while, although
we recommend 30 seconds as a safe maximum. But it is
most important to realize that the 30 second limit assumes
that the P.A. TUNE control has been immediately reson-
ated. This rule applies generally to all transmitters.
4. Do not tune more often than necessary. The P.A
tube will last for many months, or even years, with normal
operation, but excessive tuning will shorten tube life.
a. Sideband selector switch in USB position.
b. Tuning dial to desired frequency.
c. Mic Gain at minimum.
d. Carrier Insertion to full CCW (MIN) position.
e. Meter Switch in P.A. CATHODE position.
f. Function Switch in REC position.
g. P .A. BIAS control on rear panel to full CCW
position.
h. Microphone with press-to-talk switch plugged into
Mic Jack on front panel.
@ Press the Mic switch and observe the meter for any
J' reading. Meter should read approximately O. If the
meter does not read approximately 0, it indicates that
the CARRIER is not completely balanced out. LOCate
the CARRIER BAL hole on the bottom cover. With
the Mic switch pressed, use an alignment tool and
adjust the carrier balance pot until the meter "dips"
at its lowest reading. This adjustment should not be
required often.
0 Press the Mic Switch and with a screwdriver, adjust
the P .A. BIAS control located on the rear panel, until
the meter reads approximately 40 ma. P .A. Idling current. This point is indicated on the meter scale by a
small triangular symbol. The permissible idling cur-
rent range is 30 to 50 ma. If the idling current tends
to creep upward slightly with warm-up, set it at 30 ma.
Excessive creep indicates that the P.A. tube is gassy,
and may need to be replaced soon. This adjustment
should not be required often.
0 If this is the first time you are tuning the .transmitter,
set DRIVER control, P.A. LOAD control, and P.A.
PLATE control to the straight up (12 0 'clock) posi-
tion. After gaining experience in tuning these con-
trols, they may be pre-set to previously determined
positions.
NOTE
! :1
UP TO NOW THE TRANSMITTER HAS BEEN
"IDLING" AND mERE HAS BEEN NO PAR.
TICULAR TIME LIMIT INVOLVED. THE
FOLLOWING STEPS APPLY GRID DRNE,
AND REQUIRE C4UTION. OBSERVE THE
RECOMMENDED 30 SECOND TIME LIMIT.
@ Set METER SWITCH to the 5-METER position. Ro-
tate FUNCTION SWITCH to the TUNE-CW position
and:
a. Rotate DRNER control for maximum meter
reading.
.,
b. IMMEDIATELY rotate P.A. TUNE control for
maximum meter reading. -nus is the critical
"resonating" adjustment which must be done
quickly to preserve P.A tube life.
Rotate P .A. LOAD control for maximum.
d. Re-adjust P.A. TUNE control for maximum. This
adjustment should be repeated each time the P.A.
load control is adjusted.
NOTE
With the Meter switch in the S-Meter position,
and the Function Switch in the TUNE-CW posi-
tion, the meter is reading RELA TIVE OUTPUT.
This RELATNE OUTPUT reading has no rela-
tionship with the true output of the trans-
mitter. To obtain a true indication of the trans-
mitter output, place .tli.\; -lJeter switch i.. P.A
CATHODE, and rotate the Function Switch to
TUNE-CW. Normally, when the transmitter is
in resonance. the meter reading should be
approximately 300 ma. or higher. With high
line voltage and new tubes it may read as high
as 350 ma. Note that the 1011 B operates at re-
duced power in the TUNE-CW position. The
P.A. cathode bias resistor, R-406, is in the cir-
cuit during TUNE and CW operation. In voice
mode, the bias resistor is shorted out, and the
1011B operates at full P.E.P. input rating.
NOTE
The Transceiver will not modulate with the
Function Switch in the CAL position.
AM TRANSMITTER TUNING
CD Tune the transmitter to full output 3S you would fo,r
SSB transmitter tuning.
@ Rotate MIC. GAIN control to' full CCW (minimum)
position.
0 Place the SIDEBAND SELECTOR switch in the AM
REC. position.
0 Place the Meter Switch in the P.A. CATHODE
position.
<D "'With the microphone press-to-talk switch pressed,
rotate the CARRIER INSERTION control until
cathode current is approximately 125 ma.
@ While talking in a normal tone of voice into the
microphone, increase the MIC. GAIN control setting
until the meter barely kicks upward. This setting will
result in excellent AM transmissions.
CW TRANSMI1TER TUNING/OPERATION
CD Tune the transmitter to full output as you would for
SSB transmitter tuning.
@ The preceding steps complete the Transmitter Tuning
procedure for SSB. Return the Function Switch to
the REC. position.
VOICE TRANSMISSION (SSB)
After tuning up as outlined above, switch the Function
Switch to the REC. position. Place the Meter Switch in the
P.A Cathode position. Press the microphone press-to-talk
switch, and while speaking into the microphone, slowly
rotate the MIC. GAIN control until occasional peak readings of 100 to 125 ma. are obtained. With most micro-
phones, the MIC. GAIN control will be set between 9 and
12 o'clock, but it may vary considerably. The ALC circuit
will help .limit cathode current, but turning the MIc. GAIN
up too high will still produce flat-topping and spurious sig-
nals, so it is important to hold it down. The meter is quite
heavily damped, and its reading with average voice modula-
tion may not look very impressive, but the voice peaks are
going well over the 260 watt input power rating of your
Sil tronix transceiver.
<y Insert a CW key in the Key Jack on the rear panel of
the transceiver.
0 In CW operation, it is necessary to switch the Func-
tion Switch to the TUNE-CW position \¥hen transmitting, and back to the REC. position while receiving.
@ While receiving, the carrier oscillator frequency is
located 300 cycles outside the passband of the crystal
lattice filter, thus providing a single heterodyne note,
or "single signal" for CW reception. When transmit.
ting in CW mode, the carrier frequency- is moved
approximately 800 cycles higher, placing it well inside the passband. This frequency shift is termed
"Off-set CW transmit frequency", and avoids the
problems encountered when the receive and transmit
frequency are exactly the same. This is desirable for
voice communication, of course, but when using the
CW Keying mode the receiver must be tuned off fre.
quency several hundred cycles in order to hear an
audio beat. By providing this shift automatically CW
operation is greatly simplified.
8
r""-_,. ,
GENERAL DISCUSSION
The Siltronix 1011 B transceiver provides single sideband,
suppressed carrier transceive operation, and generates the
single sideband signal by means of a crystal lattice filter. To
permit a logical discussion of this mode of operation, cer-
tain definitions are necessary .
h1 a normal AM signal (double sideband with carrier), a
radio frequency signal is modulated with an audio frequency
signal. This is considered by many to be merely a case of
varying the amplitude of the carrier at an audio rate. hi
fact, however, there are actually sideoand frequencies gen-
erated, which are the results of mixing the RF and the A.F.
signals. These sidebands are the sum of, and the difference
between, the two heterodyned signals. In the detection ()f this conventional AM signal, the two sidebands are mixed
with the carrier to recover and reproduce the audio intelli-
gence. This is an inefficient means of transmission, because
only 25 percent of the transmitted power is used to transmit intelligence. There are other attendant drawbacks also.
The bandwidth of AM voice transmission is approximately
6 KHz, while the actual demodulated audio is only approximately 3 KHz. The result is inefficient use of the frequency band, and over haIf of the allotted band is unusable
due to heterodynes, interference, and congestion..
h1 the single sideband, suppressed carrier mode of trans-
mission, only one of the sideband signals is transmitted.
The other sideband and the carrier are suppressed to negligible level. h1 addition to increasing the transmission effi-.
ciency by a factor of four, single sideband effectively
doubles the number of stations or channels which can be
used in a given band of frequencies.
It should be remembered that in the single sideband, suppressed carrier mode of transmitting, the unwanted side-
band and carrier are only suppressed, not entirely eliminated. Thus, with a transmitted signal from a transmitter
with 50 db sideband suppression, the other or unwanted
sideband will be present, and will be transmitted, but its
level will be 50 db below the wanted sideband. When this
signal is received at a level of 20 db over 59, the unwanted
sideband will be present at a level of approximately 55.
The same is true of carrier suppression. With carrier suppression of 60 db, and a signal level of 20 db over 59, carrier will be present at a level of approximately S3 to S4.
For the following discussion refer to the schematic dia.
gram, and to Figures 3, 4, and 5.
SIGNAL GENERATION
When the push-to-talk switch on the microphone is pressed,
the transmitter portion of the transceiver is activated, and it
generates a single sideband, suppressed carrier signal in the
following manner. Carrier is generated by Q3 Carrier Oscil-
lator, which is a Pierce oscillator with the crystal operating
in parallel resonance. This stage operates in both the trans-
mit and receive modes. When transmitting, the RF output
of the oscillator is injected into the control grid of the
Balanced Modulator, VI3. This b'alanced modulator is a
beam deflection tube, and operates similar to a cathode ray
tube in that the electron beam from the cathode is deflected
to one output plate or the other by the charge appearing on
the deflection plates. The carrier signal fed to the control
grid of the balanced modulator appears on both plates of
the output. The two plates are connected to Transformer
T130I. The deflection plate DC voltages are adjusted by
means of the carrier balance control, RI30S, so that the RF
being fed to the output plates will cancel out, and the out-
put from Tl.301 will be zero. Audio signals from the Micro-
phone Amplifier, VI4, are applied as a modulating voltage
to one deflection plate, and the two sidebands resulting
from the sum and difference frequencies of the audio and
carrier signals appear in the output of transformer TI30I.
Carrier suppression is approximately 60 db down. The
Carrier Insertion control limits the amount of carrier that
~ be inserted in AM and thus protects the final amplifier
from being over driven.
The double sideband, suppressed carrier signal is then coupled from the secondary winding of Tl30l to the crystal
filter, which suppresses the lower sideband, and permits
only the upper sideband to be fed to the First IF Amplifier
V7. The carrier frequency is generated at approximately
5500.0 KHz, nonnal sideband. With the opposite sideband
crystal, the carrier crystal frequency will be 5504.6 KHz,
and this positions the double sideband signal on the other
side of the filter response curve, attenuating the tIpper sideband by at least 50 db.
Q1, the VFO 2N706 Oscillator, operates in the common
base configuration as a Colpitts oscillator. Q2, the buffer, is
used for isolation. The extremely good regulation achieved
through using the Zener diode regulator D1712 across the
bias supply voltage, also contributes to the stability.
The VFO in the ModellOllB exmbits extremely good stability after the initial wann-up period. Drift from a cold
start will be less than 2 KHz during the flIst hour. After
the initial wann-up period, drift will be negligible.
The single sideband, suppressed carrier signal from the First
I.F. Amplifier is fed to the Transmit Mixer, V2, where it is
heterodyned with the VFO signal. The resultant signal at
the desired transmit frequency is amplified by the Driver,
V3 ; and the Power Amplifier, V4. The signal from the VFO
Amplifier is initiated in the transistorized VFO/Buffer cir-
cuit QI and Q2. The signal from the VFO is routed to the
VFO Amplifier, and is mixed with the single sideband from
the IF amplifier, resulting in output in the 10 meter band.
When the transceiver is in the TRANSMIT mode, the gain
'. "-.j .., ,. .,-, ,., ,
9
V10
AGC/ALC
AMP
6AV6
I I
L
j- I
L_- __I
Q3
CAR OSC
2N706
V2
TRANS
MIX
12BE6
V7
FIRST
IFAMP
12BA6
V3
DRIVER
6GK6
Vl
VFO AMP
12BA6
V4
POWER
AMP
6LF6
PI NET
ANT
~
V14A
MIC AMP
1/2 12AX7
V14B
AF AMP
1/212AX7
V9A
PRODUCT
DET
1/212AX7
V13
BAL MOD
6JH8
XTAL
FILTER
5500 Xc
L ...:.:.:. ..,;;j"
FIGURE 3. BLOCK DIAGRAM, TRANSMIT MODE
VB
SECOND
IFAMP
12BA6
L
I I
L___J
I
I I
..
I
I. i
1- --_J
ANT
~
V9B
REC
AFAMP
1/2. 12.AX7
03
CAR OSC
2N706
V7
FIRST
IFAMP
12BA6
V1
VFO AMP
12AU6
PI NET
-,
t
I
XTAL
FILTER
5500 Kc
FIGURE 4. BLOCK DIAGRAM, RECEIVE MODE
10
~
~
~
I
~~
~~~
V6
REC
MIXER
12BE6
V5
REC
RFAMP
6BZ6
of the First IF Amplifier is controlled through the Auto-
matic uvel Control (ALC) network (using the AGC Ampli-
fier VIO) to control the gain of the stage in response to the
average input power to the Power Amplifier. This ALC
system \vill compensate for any extremely strong input sig-
nals, but does not completely eliminate the necessity of
proper adjustment of the Mic. Gain Control. This feature
will help prevent the transmitter from flat topping and spurious emissions, but considerable distortion may occur if the
Mic. Gain Control is not properly adjusted. Refer to Operating Instructions.
f CAUTION 1
CARE MUST BE EXERCISED WHEN TUNING
FOR THE 100 KHz HARMONICS OF THE
CALIBRATOR. SEVERAL SIGNALS MAY
BE HEARD, ALTHOUGH THEY WILL BE
DEFINITELY WEAKER THAN THE COR.
RECT HARMONICS.
TUNE AND CW OPERATION
Normally, the frequency of the carrier oscillator is approximately 300 Hertz outside the 6 db passband of the crystal
lattice filter. In TUNE position, the frequency of the carrier oscillator is moved approximately 800 Hertz to place it
well within the passband of the crystal lattice filter. A
similar procedure is followed for CW to allow full carrier
'ootput during -cw operation.
RECEIVE
In RECENE position, or at allY time when the transmitter
is not in TRANSMIT, all circuits used in transmitting are
disabled through the relay controlled circuits, KI. The
relay is energized for transmitting and de-energized for re-
ceiving. One contact, when de-energized, allows signals
from the transmitting tank circuit and antenna to be fed to
the Receiver R.F. Amplifier, V5; where they are amplified
and then fed to the control grid of the Receiver Mixer, V6.
The local oscillator signal from the VFO Amplifier is now
used to heterodyne the received signal to the IF frequency.
All I.F. amplification is accomplished at this frequency,
nominally 5500.0 KHz, through IF amplifiers V7 and VB.
In the Product Detector, V9A, the IF signal is heterodyned
With the carrier frequency generated by Carrier Oscillator,
Q3. The resultant audio is then amplified by V9B, which
then couples to the AGC amplifier, VIO, and the audio out-
put stage, VII.
FREQUENCY CALIBRATION
Frequency calibration of the Model 10 II B is in 5 KHz in.
crements. Dial accuracy and tracking are quite good, but
caution must always be observed when operating near band
edges. Measuring the frequency with the 100 KHz cali.
brator when working near band edges is recommended.
TRANSMIT AND RECEIVE SWITCHING
Transmit and receive switching is performed by relay KI.
In TRANSMIT, only those tubes that operate in the transmit mode ar~ operative, all others being biased to cutoff
through the relay contacts. In RECENE, with the relays
de-energized, the tubes that are used only in transmit are
cut off-in the same manner. Relay Kl when de-energized,
feeds signals from the output Pj-netwcrk- +~ .the receive~.
Note that relay KI will not operate when the BAND
SWITCH control is in "CB" position.
POWER RATING
The Siltronix 1011B is capable of 180 watts, P.E.P. input
under steady state two-tone test conditions. The peak
envelope power, when voice modulated, is considerably
greater, typically 260 watts, or more.
The built-in power supply produces a no-load plate voltage
of approximately 880 volts. Under TUNE conditions, or
CW operation, this voltage will drop to approximately 680
volts. Under steady state two-tone modulation, the voltage
will drop to approximately 710 volts. If the power ampli-
fier idling current is 40 ma.,' and the two-tone current, just
before flat-topping, is 200 ma., the peak two-ton. current
will be 300 ma. Under these conditions, the P .E.P. input
will be 710 volts times 300 ma..= 213 watts. Under voice
modulation, because average power is considerably less, the
power amplifier plate and screen voltages will be maintained
higher, even during voice peaks, by the power supply filter
capacitors. Peak plate current will therefore also be higher
than with two-tone test conditions. Under typical operating
conditions, peak plate current before flat-topping will be
350 ma. at 800 volts, to result in an input of 280 watts
P.E.P. Readings of cathode current will not reflect this
power input, however, because of the damping in the cathode current meter. Cathode current readings under normal
voice input should not average more than 100 to 120 ma.
DIAL SET
A DIAL SET control has been provided so that dial adjust-
ment can be made at any 100 KHz point on the dial. With
calibrator on, set the dial to any loa KHz point closest to
the frequency you wish to work. Now adjust DIAL SET
control to zero-beat the VFO with the 100 KHz Calibrator.
This provides greater accuracy of dial readout.
POWER AMPLIFIER PLATE DISSIPATION
There is often a misunderstanding about the plate dissipa-
tion of tubes operated as ABI amplifiers under voice modulation. In the Siltronix 1011 B, while in the transmit mode,
and with no modulation, the plate voltage will be approxi-
mately 830 volts, the plate current 40 ma., and the power
input 33 watts.
Authorities agree that the average voice power is 20 to 20 db
below peak voice power. Normally, some peak clipping in
the power amplifier can be tolerated, and a peak-to-average
ra tio of only 6 db may sometimes occur. Under such con-
ditions, the average power input will be 80 watts, and average plate current will be 100 ma. With power amplifier effi-
ciency of 65 percent, plate dissipation will be approximately
26 watts. The 6LF6 is rated at 40 watts, continuous duty
cycle, in normal TV service. "n1US it can be seen that under
normal operating conditions, the Power Amplifier tube in
the 101lB is not being driven very hard. Note, however, that
proper modulation level must be maintained by correct set.
ting of Mic. Gain, and that the length of time in TUNE posi-
tion must be limited to not more than 30 seconds at a time.
0 -
608-
ZOOS
40DB-
60 DB.
5498
-
-
SSOO SSOZ 55)4
-
SS~ KC
-
-
-
-
-
-
-
12
80 DB-
100 D8-J-~--fIE-
FIGURE 5. CRYSTAL FILTER CHARACTERISTICS
iTI
0--.
IZ KC
-
-
-
I~-
-
--it-i
--,;'1t-
-
Dle alignment procedures presented in this section are routine touch-up procedures for all tuned circuits and other
adjustments. It is recommended that the procedures be
performed in the order presented. However, if complete
realignment is not required (as may be the case when just
one tube is replaced), perform just those procedures re-
quired. Refer to Figures 6 and 7 for component placement.
2. The alignment of transmitter circuits involves the adjustment of tuned circuits in the VFO Amplifier, VI; the
Transmit MIXER, V2; and the DRIVER stage, V3. It is
recommended that a 50 ohm dummy load be connected
to the antenna jack during this series of adjustments.
CD Set the tuning dial to approxima tely ~8.3 MHz,
and the DRNERcontrol at 12 o'clock.
RECEIVER AliGNMENT
Receiver alignment involves only the adjustment of the
Second I.F. coil. The R.F. coils which affect receiver performance are also used in the TRANSMIT mode. Their ad-
justment is covered under "TRANSMITTER AUGNMENT".
Q) After allowing approximately five ~i"utes for warm-
up, tune the receiver to the middle of the band and on
a "clear" frequency.
0 Adjust the P.A. TUNE, P.A. LOAD, AND DRIVER
controls for maximum noise.
CD Adj~st the Second I.F. coil (LB01) for maximum
background noise.
S-METER ADJUSTMENT
With the antenna disconnected, R.F. GAIN control fully
clockwise, and METER switch in S-METER position, set
R70S, located on the rear panel, for zero meter reading.
Make sure no local signals are being received.
TRANSMITTER ALIGNMENT
@ Set P .A. LOAD control to 9 0 'clock.
0 Set METER switch to P .A. CATHODE.
@ Press Mic. button. Check idling CUlTent. It should
be on the "delta" symbol when the CARRIER
~. BALANCE control is nulled, and the CARRIER
INSERTION control is fully counter clockwise.
Adjust P.A. BIAS control if necessary.
0 With Mic. button pressed, adjust CARRIER BAL-
ANCE control for slight increase in meter reading,
50 to 60 ma. Adjust P .A. TUNE c{Jntrol to resonance (dip).
CD Adjust coils LI0l, L201,and 1301, for maximum
reading. When reading goes higher than 80 ma., or
so, adjust CARRIER BALANCE control for 60
ma. again.
@ Adjust coils carefully for maximum peak. Exercise
caution with CARRIER BALANCE control. Do
not exceed 100 ma. reading for more than a few
seconds. Be sure P.A. TUNE control is resonated
(adjusted for "dip" in meter reading).
3. Power Amplifier Neutralization.
To adjust the Power Amplifier Bias:
Switch METER switch to P.A. CATHODE posi-
tion.
Rotate CARRIER INSERTION control fully
counter clockwise. .
After allowing approximately five minutes for
warm-up, key the transmitter with the microphone
switch. Without speaking into the microphone, adjust the Carrier Balance control on the bottom
cover for a Null.
Again key the transmitter with the microphone
switch, and without speaking into the microphone,
adjust the P.A. BIAS control on the rear panel
until the meter reads 40 ma. of idling current.
This point is indicated on the meter by the "delta"
symbol.
:'t ,',',' ",'" -'~-".-
0 After allowing approximately five minutes for
warm-up, tune transmitter to approximately 283
MHz.
@ Set the P.A. LOAD control to 9 o'clock.
@ Set METER switch to P .A. CATHODE.
0" Key the transmitter with the Mic. button, and
without speaking into the microphone, adjust the
CARRIER BALANCE control for a reading of
approximately 100 ma. Quickly adjust the
DRNER control for a peak. Quickly re-adjust the
CARRIER BALANCE con trol to 100 ma. if it increased to a higher reading.
0 With the Mic. button still pressed, rotate the P.A.
TUNE control through its range from 9 o'clock to
3 o'clock. You will note a pronounced "dip" in
meter reading at resonance. Observe any tendency
]3
14
FIGURE 6. SILTRONIX MODEL 10118 TOP VIEW.
for the meter to "peak" above the 100 ma. plateau
on ei ther side of resonance. If there is such a peak,
adjust C40l, the P.A NEUTRALIZING trimmer
to suppress the peak. When properly neutralized,
the meter reading will hold steadily at 100 ma.
except for the sharp dip at resonance, but there
will be no peak above the 100 ma. level.
<D Key the transmitter with the Mic. button, and re-
adjust the CARRIER BALANCE control for mini.
mum Power Amplifier current. Power Amplifier
idling current should be on the "delta" symbol. If
not, repeat the Power Amplifier Bias adjustment
described in TRANSMITTER AUGNMENT,
STEP 1.
4. Carrier Frequency Adjustment.
A dummy load wattmeter and audio generator are reo
quired for this adjustment.
-~-~.. .~..'-- 0 After allowing a five minute warm-up period, tune
the transmitter to approxjmatley 28.3 MHz.
@ Key the transmitter with the Mic. button, and
adjust the CARRIER BALANCE control for minimum power amplifier current.
0 Insert 1500 Hertz of audio from an audio genera-
tor into the Mic. Jack on the front panel. Adjust
the gain of the audio generator and the Mic GAIN
control (R1404) until the wattmeter reads approximately 10 to 15 watts.
@ Adjust the First I.F. coil, L701, for maximum out-
put. Adjust both slugs of the balanced modulator
transformer, T1301, for maximum output.
0 Increase gain of audio generator until the watt-
meter reads 40 watts. Sweep generator down to
200 Hertz and adjust the USB carrier oscillator
trimmer, C1S03, for a reading of 10 watts.
CD Switch to the LSB position. Adjust the LSB car-
rier oscillator trimmer, C1S0l, for a reading of
10 watts.
@ Re-check with audio generator set at 1500 Hertz
and 40 watts. Sweep down to 200 Hertz and re-
adjust carrier oscillator trimmers, if required, for
10 watts.
S. VFO Calibration.
Mter allowing approxjmately five minutes for warm-up,
tune the dial to the 200 KHz increment for any of the
10 meter ranges to be calibrated. For CB calibration,
tune the dial to the 27,100 KHz increment. Using the
~1 00 KHz crystal calibrator as a signal source, tune the
signal for zero beat and note the cor!espon~~'!g-dial read.
ing. If the signal does not zero beat on the desired dial
increment, locate the VFO cover and carefully adjust the
correct trimmer until it does.
Use an insulated alignment tool for adjustment. Accuracy in other parts of the bands will be quite good, but
remember that the 1011B is not to be considered a fre-
quency standard; Be cautious when operating near band
edges.
6. Troubleshooting.
The information contained in Figures 6 and 7, together
with the voltage and resistance measurements in Table 1,
and the information in Table 2, should be sufficient for
most troubleshooting by the average licensed amateur
radio operator.
16
TABLE 1. VOLTAGE AND RESISTANCE MEASUREMENTS
Voltage measurements were taken using a HEWLETT PACKARD Model 410C/B VTVM. Resistance measurements were
taken using a SIMPSON MOdel 260 Volt-Ohm meter.
TUBE
TYPE
VI 12BA6
VFO Amp.
R = Rec.
T = Trans.
R Volts
T Volts
Ohms
V2 12BE6 RVolts
Trans. Mixer T Volts
Ohms
V3 6GK6
Driver
R Volts
T Volts
Ohms
V5 6BZ6
Rec. RF.
RVolts 0
T Volts 0
O~ ~._!..:tM
V612B£6
Rec. Mixer
V7 12BA6
1st I.F.
VB. 12BA6
2nd I.F.
V9 12AX7
Det. AF.
Via 6AU6
AGC Amp.
VII R Volts
A.F. Output T Volts
V12 12BA6 R Volts
100KC Cal. T Volts
V13 6JH8
Bal. Mod.
V14 12AX7 R Volts
Mic. Amp T Volts
R Volts
T Volts
Ohms
RVolts
T Volts
Ohms
RVolts
T Volts
Ohms
R Volts
T Volts
Ohms
R Volts
T Volts
Ohms
Ohms
Ohms
RVolts
TVolts
Ohms
Ohms
1
-.6
-.6
1.2K
-1.2
-1.0
lOOK
0
0
10
-3.7
-3.4
200K
-1.8
-1.8
500
-1.7
-1.7
110K
55
-3
400K
0
0
50 OK
0
.7
22
0
0
1M
0
45
2K
50
45
1M
2
0
0
0
0
0
0
-6.7
-6.7
lOOK
0
0
0
0
0
0
0
0
0
0
0
0
-1
-1.6
IlK
20
1.6
5K
1.9
0
10K
0
0
0
0
45
.75K
0
0
0
Socket Pin Numbers
3
0
0
0
0
0
0
0
0
0
6.3AC
6.3AC
0.1
12.6AC
12.6AC 12.6AC 220
0 0 20K
0
0
0
0
0
0
0
0
300
6.3AC
6.3AC
0.2
215
0
10K
12.6AC
12.6AC
0.1
0
75
~
0
0
0
4
12.6AC 45
12.6AC 50
0.2 0
12.6AC
12.6AC
.02
0
0
0
0
0
0
I 12.6AC 220
12.6AC
63AC
63AC
03
255
255
14K
1 210 12.6AC 220
0.1 lSK
12.6AC
12.6AC
205
225
0.1
0
0
0
0
0
0
6.3AC
6.3AC
0
225
175
lOOK
6.3AC
6.3AC
0.2
0
0
0
0
0
0
0
0
0
63
63
0
225
175
200K
0
0
0
0
0
0
s
250
250.
lSK
AC
AC
6
45
50
.
-2
135
IlK
NC
NC
NC
115
0
40K
110
0
20K
48
50
50K
105
0
40K
145
0
125K
0
0
700K
250
250
8K
75
55
0
-1.4
-1_~~ l
~
0
75
600KI
I 0
0
0
0
0
0
0
0
-.25
-.25
1M
225
175
lOOK
9
0
2.5K
0
0
0
0
0
0
7
g
0
0
35K
255
265
*
0
0
0
0
70K
8
0
225
0.2
0
0
0
0
0
1.IM
0
100
75K
0
0
10K
9
0
0
0
6.3AC
6.3AC
0.2
170
0
120K
0
100
75K
6.3AC
6.3AC
0.2
V46LF6
Pwr. Amp.
R Volts
T Volts
Ohms
1
12.6AC
12.6AC
0
2
0
0
2.4
NC
NC
NC
3
4
0
0
0
5
-75
-75
180K
6,7,8.9
I NCI
NC ,
NC ~
10
0
0
0
11
0
180
100
12
12.6AC
12.6AC
0 I
17
,
TABLE 2. TROUBLESHOOTING GUIDE
DEFECT
P A Idling Current
Unstable
Inability to Load per
Operation Instructions
Insufficient Sideband
Suppression
Insufficient Carrier
Suppression
Microphonics in Transmitter
Low Receiver Sensitivity
POSSIBLE CAUSE
1. Defective Power Amplifier Tube (V4).
2. Defective BIAS control and/or associated components.
3. Defective bias power supply.
1. Antenna not resonant at operating frequency.
2 Defective transmission line.
3. Defective antenna loading coi1(s).
4. Tubes VI through V4 defective.
1. Carrier Oscillator (Q3) operating on incorrect frequency.
2. Crystal fllter defective or mistuned.
1. Tube V13 defective.
2. Transformer T1301 defective or mistuned.
3. Oirrier O~i11ator (Q3) operating on incorrect frequency.
r:'I'iibes V13 and/or V14 defective.
2. IF coil 1701 Defective or incorrectly adjusted.
3. Microphone defective.
1. Tubes VS through VIO defective.
2. mcorrect adjustment of the transmitter Pi-Network.
3. IF coil L80I incorrectly adjusted or defective.
4. Kl relay contacts defective.
TABLE 3. VFO AND CARRIER OSCILLATOR FREQUENCIES
18
~--. ~ ~--- -.
[PARTS LIST I
RESISTO RS
All resistors are 1,2 watt 10%
tolerance, unless otherwise noted.
RlOl 82 Ohm
Rl02 47K
Rl03 10K.2W
Rl04 56 Ohm
R20l 27K
R202 lOOK
R203 lOOK
R204 10K.2W
R205 470K
R206 2.7K
R30l lOOK
R302 lOOK
-R303 ., 10 Ohm
R304 100 Ohm
R40l 100 Ohm
R402 25K Bias Pot.
R403 4.7K
R404 IK
R405 3 Ohm-5W
R406 100 Ohm-SW
R407 2.7K
R408 l5K
RSOI lOOK
RSO2 220K
RS03 470 Ohm
RS04 10K
RS05 25K R.F. Gain Pot
RS06 10K
RS07 470K
R601 47K
R701 1.5K
R702 33K-2W
R703 lK
R704 47K
R705 25K 8-Meter Zero Pot
R706 l5K
R707 47K.2W
R708 lOOK
R801 lOOK
R802 IK
R803 4.7K
R901 lOOK
R902 270 Ohm
R903 270K
R904 47K
R905 lO Meg
R906 1 Meg
R907 47K
R908 lOOK
RlOOI 1 Meg
RIO02 270K
RlOO3 470K
Rl 004 4.7K
RlOO5 l5K
RlOO6
RlOO7
RlOO8
RIOO9
RlIOl
RII02
RII03
R1104
RII05
R1201
R1202
R1203
R1301
R1302
R1303
R1304
R1305
R1306
R1307
R1308
R1309
R1310
R1311
R1312
R1313
R1401
Rl402
R1403
R1404
R140S
R1406
R1407
R1408
R1501
R1502
R1503
R1504
R150S
R1 506
R1601
R1602
R1603
R1604
R160S
R1606
R1607
R1608
R1609
R1701
R1702
Rl703
R1704
R170S
R1706
R1707
R1708
R1709
2.2 Meg
270K
2.2 Meg
lOOK
1 Meg A.F. Gain Pot
lOK
lOOK
1 Meg
270 Olun
1 Meg
27K
lOOK
lK
10K
lOK ,.
270K .,
lOK.l W
27K
27K
SK Car. Bal. Pot
lK
lOOK
27K
Selected Value
5K Carrier Insertion Pot
l50K
47K
lK
1 Meg Mic. Gain Pot
270K
470K
2.2 Meg
47K
lOK
68K.2W
22K
2.2K
l.5K
lOO Olun
2.7K
l.5K
lK
lOOK
470 Olun
2.7K
lK
470 Olun
470 Olun
lOK.2W
4.7 Ohm
l50K.2W
lSOK.2W
800 Ohm-lOW
l.2K-5W .
270K
2.7K
800 Ohm-lOW
R1710
R1711
500 Ohm-lOW
lOOK
TRANSISTORS
Ql 2,N706 Oscillator
Q2 2N5130 Buffer
Q3 2N706 Car. Oscillator
DIODES
D401 IN34A
DSOI IN914
D701 IN914
D702 IN914
D703 IN914
D901 IN34A
."-.~DIOOIIN914'.-
DIOO2 IN34A
DlOO3 IN34A
D1201 IN34A
D1601 IN914
D1701 RCA 39804
D1702 lA-600V
D1703.1706 RCA39804
D1707.1710 RCA 39804
D1711 RCA 39804
D1712 IN4742 Zener
COILS
LI0l
UOI
1.301
1.302
IAOI
IA02
IA03
IA04
L701
1.801
LIS0l
L1601
L1602
Ll603
L1701
L1702
CAPACITORS
Unless otherwise specified, a capacitor
is listed in pico farads with a whole
number and in micro farads with a
decimal num ber .
CIOI .01 +80-20% 500V Disc
CI02 .00220% lKV Disc
CI03 27pf Disc
CI04 1 pf 500V Ceramic
CI05 15pfDisc
CI06 5pfDisc
CI07 2pfDisc
VFO Amp
Trans. Mixer
Driver
82uh
82uh
55uh
Pi-Network
30uh
5500KC I.F.
5500KC I.F.
200 uh
VFO Coil
200 uh
200 uh
200 uh
17 uh
19
CI08
.CI09
ClIO
C111
.C201
C202
C203
" C204
C205
C2A
, C2B
C302
C303
C304
C305
C401
C402
C403
C404
C40S
C4Q6
..~.C407 .
C408
C409
C410
C501
C502
C503
C601
C602
C603
C701
C702
C703
C704
C70S
C706
C801
C802
C803
C804
C80S
C901
C902
C903
C904
C905
C906
CI001
C1002
CI003
CI004
Cl005
CI006
CI007
CII01
C1102
C1103
C1104
C1201
C1202
C1203
2pf Disc
2pf Disc
.01 +80-20% 500V Disc
.002 20% 1 KV Disc
.05 200V Mylar
.01 +80-20% 500V Disc
470pf SM
2pf SOOV Ceramic
.00220% lKV Disc
20pf Driver Tuning
20pf Driver Tuning
.00220% lKV Disc
51OpfSM
.00220% lKV Disc
5pf
2Opf Neut. Trimmer
15pf3KV Disc
.01 +80-20% 500V Disc
.002 20% 1 KV Disc
.01 +80-20% 500V Disc
27Opf 2500V Mica
--40pE.l!rA. Tune
41OpfP.A. Load
.01 +80-20% 500V Disc
.01 +80-20% 500V Disc
.01 +80-20% 500V Disc
.01 +80-20% 500V Disc
3Opf Disc
.01 +80-20% 500V Disc
220pf Disc
43Opf SM
1 MFD 50V
5Opf Disc
.01 +80-20% 500V Disc
.01 +80-20% 500V Disc
2pf Disc
.01 +80-20% 500V Disc
.01 +80-20% 500V Disc
.01 +80-20% 500V Disc
.01 +80-20% 500V Disc
5Opf Disc
5Opf Disc
220pf Disc
.00220% IKV Disc
ISO pf Disc
2 MFD 450V
50Opf Disc
.00220% lKV Disc
.05 200V Mylar
.05 200V Mylar
.001 20% Disc
.01 +80-20% SOOV Disc
.001 20% Disc
.001 20% Disc
.001 20% Disc
220pf Disc
.002 20% I KV Disc
500pfDisc
.01 10% 1 OOOV Tubular
50pf Disc
6Opf Trimmer
I 5Opf Disc
C1301
C1302
C1303
C1304
C1305
C1306
C1307
C1401
C1402
C1403
C1404
C1405
C1406
C1407
C1501
C1502
C1503
C1504
C1505
C1506
C1507
C1601
C1602
C1603
C1604
C1605
C1606
C1607
C1608
C1609
C1610
C1611
C1612
C1613
C1614
C1615
C1616
C1617
C1618
C1619
C1620
C1701
C1702
C1703
C170S
C1706
C1707
C1708
C1709
C1710
C1711
C1712A
C1712B
C1712C
C1712D
C1713
C1714
.01 +80-20% 500V Disc
.01 +80-20% 500V Disc
.01 +80-20% 500V Disc
.01 +80-20% 500V Disc
.01 +80-20% 500V Disc
220pf Disc
.002 20% 1 KV Disc
.01 +80-20% 500V Disc
.1 10% 400V Mylar
.01 +80-20% 500V Disc
.01 +80-20% 500V Disc
.110%400VMylar
10Opf Disc
.01 +80-20% 500V Disc
6-3Opf Ceramic Trimmer
10pfDisc
6-3Opf Ceramic Trimmer
27Opf SM
270pf SM
.01 +80-20% 500V Disc
30pf J.
Selected
5pf Trimmer
5pf Trimmer
5pf Trimmer
Selected
5pf Trimmer
5pf Trimmer
10pfMain Tuning
Selected
2pf Dial Set
20pf Disc
27OpfSM
6-30pf Ceramic Trimmer
.01 +80-20% 500V Disc
.01 +80-20% 500V Disc
30OpfSM
27pf SM
.01 +80-20% 500V Disc
.01 +80-20% 500V Disc
.00220% lKV Disc
.01 01.80-20% 500V Disc
100 MFD 35V
.01 +80-20% 500V Disc
.00471KV
.0047 lKV
150 MFD 150V
100 MFD 350V
100 MFD 350V
.00220% lKV Disc
.01 +80-20% 500V Disc
80 MFD 400V
80 MFD 400V
5 MFD 400V
5 MFD 400V
150 MFD 150V
150 MFD 150V
TRANSFORMERS
TII01 A.F. Output Trans.
T1301 5500KC Bal. Mod. Trans.
T1701 Power Trans.
2401
Parasitic Suppressor
RELAYS
Kl
CRYSTALS
YI20I IOOKC Crystal Calibrator
YI50I 5500KC Carrier Oscillator
YI502 5504.6KC Carrier Oscillator
3 PDT Relay, 12 VDC Coil
TUBES
VI
V2
V3
V4
VS
V6
V7
V8
V9
VIO
VII
VI2
VI3
VI4
SWITCHES
SIA-B Bandswitch
S2 Power Off and On
53 Cal. Rec. Tune/CW
54 P.A. Cath./S-Meter
55 ANL
56 Sideband Selector
S7 Spot
12BA6 VFO Amp.
12BE6 Trans. Mixer
6GK6 Driver
6LF6 Power Amp.
6BZ6 Rec. RF Amp.
12BE6 Rec. Mixer
12BA6 First I.F. Amp.
12BA6 Second I.F. Amp.
12AX7 Prod. Det/Rec. Audio
6AV6 AGC/ALC Amp.
6GW8 A.F.l::>1:itput ~
12BA6 100KC Cal.
6JH8 Bal. Mod.
12AX7 Trans A.F./Mic. Amp.
(part of RF Gain)
20
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WARRANTY POliCY
Silt."On~ Corporation walTants this equipment against
def~ts in material or workmanship, except for tubes,
transistors, and diodes. under nolmal service for a period
of 6 months from date of original purchase: Tubes, tran-
sist~rs, and diodes are covered under the warranty policy
for Ii period of 90 days. This warranty is valid only if the
enclosed card is properly filled in and mailed to the factory
within ten days of date of purchase. Do not ship to the
factory without prior authorization. This warranty is
IOn/ted to repairing or replacing only the defectiv.e parts,
and is not valid if the equipment has been tampered with,
misused or damaged. A 11 returns for repairs must be sent
freight prepaid. Siltro,nix will prepay the return freight.
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