DRAKE R8B - Specifications and Accessories; Receiver Specifications; Included Accessories

2 Introduction - Specifications / Accessories
Frequency Range
Modes
Sensitivity: SSB, CW (10dB
S+N/N)
Sensitivity: AM
(10dB S+N/N, 1000 Hz,
30% mod)
Sensitivity: FM
(12 dB SINAD)
Frequency Stability
Frequency Accuracy
Selectivity: AM, LSB, USB,
RTTY, CW
FM Only
Ultimate Selectivity
Image Rejection
IF Rejection
Dynamic Range
100-30,000 kHz
AM, LSB, USB, CW, RTTY, FM
0.5 µV nominal, 100-30,000 kHz
(preamp off)
Less than 0.25µV, 100-30,000 kHz
(preamp on)
1.5 µV nominal, 100-30,000 kHz
(preamp off)
Less than 1.0 µV, 100-30,000 kHz
(preamp on)
Less than 0.5 µV, 100-30,000 kHz
±5ppm, -10
0
to 50
0
C
Better than ±100 Hz, -10
0
to
50
0
C
6 KHz @ -6 dB, less than 12 kHz
@ -60 dB
4 KHz @ -6 dB, less than 8 kHz
@ - 60 dB
2.3 KHz @ -6 dB, less than
4.5 KHz @ -60 dB
1.8 KHz @ -6 dB, less than
3.6 KHz @ -60 dB
500 Hz @ -6 dB, less than
1.5 KHz @ -60 dB
12 KHz @ -6 dB, less than
25 KHz @ -60 dB
Greater than 95 dB
Greater than 80 dB,
100-30,000 kHz
Greater than 80 dB, 45 MHz
Greater than100 dB, 50 kHz
97 dB, 100-30,000 kHz @ 100 kHz
spacing
IP
3
- Intercept Point
(preamp off)
1st IF
2nd IF
AGC
Ant 1, Converter
Ant 2
Notch Filter Attenuation
External Speaker Output
Line Outputs
AC Power Requirements
DC Power Requirements
Operating Temperature
Weight
Size
+20 dBm @
100 kHz spacing
-20 dBm @
5 kHz spacing
45 MHz
50 kHz
Threshold: 0.8 µV
Attack time: 1mS
Release time: SLOW: 2 Sec
FAST: 300mSec
Nominal 6 dB change in au-
dio output for 100 dB input
change above AGC
threshold
50 Ohms unbalanced
50 or 500 Ohms unbal-
anced
AF type, 40 dB min. Depth
(500-5000 Hz)
2.5 W, 4 Ohms @ less than
5% distortion
300 mV, 4.7K Ohms
100/120/200/240VAC,
±10%
50 or 60 Hz, 40 Watts
nominal
11-16 VDC @ 2 A
-10
0
to +50
0
Celsius
13 lbs. (5.9 Kg)
Width 13 1/8" (33.4 cm)
Height 5 1/4" (13.4 cm) in-
cluding feet
Depth 13" (33 cm), includ-
ing front knobs and rear
connectors
ACCESSORIES
Accessories for the receiver include:
1) A VHF converter with frequency coverage of 35-55 MHz
and 108-174 MHz.
2) A complementary styled MS8 external speaker.
CAUTION: The optional VHF Converter accessory should
be installed by a qualified service technician to prevent
personal injury or damage to the equipment.