RCA SSB-1, Instruction Book

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SINGLE SIDEBAND RADIO COMMUNICATION EQUIPMENT
RCA TYPE SSB·l
I
GENERAL DESCRIPTION
TECHNICAL SUMMARY
GENERAL:
CHANNELS ..... .............. Four
TYPE OF OPERATION ......... Simplex
("Push-to-talk" telephone, or tele­
graph)
FREQUENCY RANGE
Channels 1 and 2 .... 3.0 - 6. 7 Me
Channels 3 and 4 .. . 6. 7 - 15.0 Me
ANTENNA REQUIRED ...... Resistance:
10-80 ohms. Capacitance: 300 uuf
(min.). Single wire not to exceed
1/4 wave length at highest channel
frequency.
CRYSTALS REQUIRED ....... 1 - 250 Kc
Type CR-47/U. 1 - 1150 Kc Type
CR-27/U.
4 - Type CR-27/U (one
per channel).
NOTE: Channel crystals must be 1400 Kc
higher in frequency than the desired
operating frequency.
The same
crystal serves both transmitter and
receiver.
EMISSION
Phone ..... Single Sideband Suppressed
Carrier .
. . . . . Single Sideband With Carrier.
Telegraph .. A 1; Single Sideband Keyed
Tone.
RECEPTION .. Single Sideband Suppressed
Carrier.
. . . . . Single Sideband With Carrier.
... .. A1; A2; A2 Keyed Tone;
Single Sideband Keyed Tone; A3.
KEYING SPEED ... 30 Words Per Minute -
manual (break-in) operation,
..... ... 60 Words Per Minute -
teleprinter operation.
TRANSMITTER:
PO WER OUTPUT ........ .... 60 watts
FREQUENCY STABILITY ..... ±0.0005 %
CLARIFIER RANGE . ..... ..... ± 75 cps
4
TRANSMITTED SIDEBAND ....... Lower
UNWANTED SIDEBAND ...
. .
... ..
.
50 db
SUPPRESSION
CARRIER SUPPRESSION .......... 50 db
HARMONIC SUPPRESSION .... ... .. 56 db
AUDIO INPUT .... a) Single Button Carbon
Microphone From Local Handset or
From Up To 3 Remote Positions .
. . . . b) -6 DBM in 600 Ohm
Line for Full Transmitter Output.
AUDIO FIDELITY ..... ±2 db, 350-3000 cps
AMOUNT OF SPEECH CLIPPING .... 20 db
TRANSMITTED SIDEBAND DISTORTION:
Single tone, full power output, no
clipping ....... 2.5% at 1000 cps
TWO-TONE TEST:
Distortion Products ... ... -26 db
RECEIVER:
SENSITIVITY ... Better than 1 microvolt for
50 milliwatts output with 6 db signal­
to-noise ratio.
SELECTIVITY .. Determined by mechanical
filter characteristics: 3.2 Kc nomi­
nal bandwidth for 6 db attenuation;
6. 5 Kc bandwidth for 60 db attenu­
ation .
AUDIO FIDELITY
.
...
±
2 db, 350-3000 cps
AUDIO OUTPUT .. . a) 2 watts maximum in
speaker.
... b) With 50 mw output in
loudspeaker, audio level in 600 ohm
line is -7 DBM.
AUDIO DISTORTION .
.
...
.
2.5% (1000 cps
at 50 milliwatts output)
TWO-TONE TEST:
Distortion Products .. ......... -26 db