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AM/SSB
Base/
Mobile CB Radios
GRANT LT
WASHINGTON
CB Transceivers
4 / 12 Watts |
|
| Specifications |
|
|
General Specifications |
GRANT LT |
WASHINGTON |
|
Channels
|
40 AM, 40
LSB, 40 USB |
40 AM, 40
LSB, 40 USB |
|
Frequency Range
|
26.965 to 27.405 MHz |
26.965 to 27.405 MHz |
|
Frequency Control
|
Phase Locked Loop (PLL) synthesized circuitry |
| Frequency Tolerance |
±0.005 %
|
| Frequency Stability |
0.001 %
|
0.001 % |
| Microphone |
Plug-in type; dynamic with push-to-talk switch and curled cord |
| Input Voltage |
13.8V DC nominal, 15.9v max.,11.7v min.
(pos. or neg. ground) |
117V AC nominal, 13.8V DC nominal,
(pos. or neg. ground) |
| Current Drain Transmit: |
AM full mod., 3A; SSB, 12 watts PEP output, 2.5A
Receive: squelched, 1A; maximum audio output, 2A |
2.2A typical, 3A maximum; Receive: squelched, 0.3A
full audio output, 1A |
| Cabinet Dimensions |
7 7/8" (W) x 9 1/2" (D) x 2 3/8" (H) |
13 1/2" (W) x 11" (D) x 5" (H) |
| Weight |
5 Ibs. |
13.3 Ibs. |
| Antenna Connector |
UHF, SO-239 |
| Meter |
Illuminated; indicates relative power output and received signal strength |
Shows relative power output and received signal strength
and modulation |
Operating
Temperature
Range: |
-20° C to +50° C |
| Receiver
Specifications |
GRANT LT |
WASHINGTON |
Sensitivity
|
SSB: Better than 0.25pV for 10dB (S+N)/N at greater than 1/2 watt of audio output
AM: less than .50pV for 10 dB (S+N)/N at greater than 1/2 watt of audio output
SSB and AM: 6 dB @ 4.2 kHz, 60 dB @7.0 kHz, ( 60 dB @7.9 kHz
Washington) |
| Cross Modulation |
50 dB typical |
Better than - 55 dB |
| Image Rejection |
50 dB typical |
Better than - 60 dB |
| I.F. Frequency |
AM and SSB: 7.8 MHz |
| AM and SSB RF Gain Control |
(AGC): Less than 10 d8 change in audio output for inputs from 10 to 500,000 microvolts |
| Squelch |
Adjustable; threshold less than .5 pV |
| Noise Blanker |
RF type, effective on AM and SSB |
| Clarifier Range |
±1.25 kHz |
| Audio Output Power |
3 watts (10 % THD) |
4 watts into 8 ohms |
| Frequency Response |
350 to 2500 Hz |
| Distortion |
3 watts (10 % THD) |
4 watts into 8 ohms |
| Built-in Speaker |
8 ohms, round |
8 ohms |
External Speaker
(not supplied) |
8 ohms; disables internal speaker when connected |
8 ohms; disables internal speaker when connected |
PA SYSTEM:
Power Output
External Speaker for PA
(not supplied) |
3 watts (10 % THD)
8 ohms
|
4.0 watts
8 ohms
|
| Transmitter
Specifications |
GRANT LT |
WASHINGTON |
| RF
Power Output |
AM, 4 watts SSB, 12 watts, P.E.P. |
| Modulation |
AM, high and low level Class B |
| Intermodulation Distortion |
SSB: 3rd and 5th order, more than -25 dB 7th and 9th order, more than -35 dB |
| SSB Carrier Suppression |
More than -45 dB |
| Unwanted Sideband |
More than -45 dB |
| Frequency Response |
AM and SSB: 350 to 2500 Hz |
AM and SSB: 300 to 3000 Hz |
| Output Impedance |
50 ohms, unbalanced |
| SSB Filter |
7.8 MHz, crystal lattice type
6dB @ 4.2kHz / 60dB @ 7.0kHz |
| Output Indicators |
Meter shows relative RF output power; red transmit LED |
Meter shows relative RF output power |
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