8100 General Purpose Receiver

Screening

60 dB

Spurious Emissions

1 nW maximum

Battery State Indicator

Visual on display plus audible warning

Battery Life

8 hours, dependent upon volume level

Charging Time

16 hours

Weight

6 kg (including case and batteries)

Dimensions

330 x 115 x 240 mm (including case)

Operating Temperature Range

0 - 40°C

Lock

Front Panel control lock

Range

100 kHz - 26 MHz (reduced specification)
26 MHz - 1000 MHz

Accuracy

± 2.5 kHz

Tuning Increments

0.5, 1, 5, 6.25, 10, 12.5, 20, 25, 50 kHz steps

Frequency Offsets

5, 6.25, 10, 12.5, 25 kHz steps

Frequency Scanning

Between user set limits

Lockout Frequencies

Up to 100

Hold Time

Adjustable 0-9.9 seconds

Dwell Time

Adjustable 0-9.9 seconds

Resume Time

Adjustable 0-9.9 seconds and off

Measuring Range

-10 dBµV to + 110 dBµV : 26 - 1000 MHz

7.5 kHz bandwidth

+5 dBµV to + 110 dBµV : 100 kHz - 1 MHz

Average detection

0 dBµV to + 110 dBµV : 1 - 26 MHz

Level Readout Resolution

0.1 dB

Displayed Range

84 dB bargraph display

Level Accuracy

± 1.5 dB max, typically ± 0.5 dB : 26 - 1000 MHz

Hold Time

Adjustable 0-9.9 seconds

7.5 kHz bandwidth

± 3 dB : 100 kHz - 26 MHz

Level Detection Time Constants

Average 5 ms, 0.1 s, 1 s.Peak hold time 1 s

Measuring Units

dBµV, µV, dB relative, dB µV/metre, dBm

IF Frequencies

301.5 MHz, 21.4 MHz, 455 kHz

Bandwidth 3 dB

+5 dBµV to + 110 dBµV : 100 kHz - 1 MHz

8101

7.5, 15 and 120 kHz

8102

7.5, 15, 20 and 120 kHz

8103

7.5, 15, 25, 120 kHz

Adjacent Channel

Greater than 45 dB. (12.5 kHz channel spacing)

Rejection

Greater than 50 dB. (25.0 kHz channel spacing)

Image Rejection

50 dB minimum. Typically 70 dB (level required to produce an indication of 0 dBµV).

IF Rejection

70 dB minimum. (230-400 MHz, 50dB minimum) Typically 80 dB
(level required to produce an indication of 0 dBµV).

Spurious Response Rejection

Typically 50 dB
(level required to produce an indication of 0 dBµV)

Blocking

75 dBµV minimum
(1 dB level change, 0 dBµV signal, 2 MHz away)

Intermodulation

55 dB minimum (1 mV p.d. input, 50 kHz separation)

RF Input Impedance

Nominally 50 Ω

Antenna Input

“N” type connector

Input VSWR

Less than 2: 1 without RF attenuation
Less than 1.4 : 1 with RF attenuation selected

RF Attenuation

20 dB

IF Attenuation

10, 20 or 30 dB

Max. Safe Level

3.5 V rms (250 mW) +23 dBm at max. Sensitivity

Overload Display

Visual and Audible

Audio Demodulation

AM, FM

Typical Signal-to-Noise Ratio (S+N/N, audio filter selected):
AM: Typically 10 dB (6 dB < 26 MHz) for 0 dBµV signal, 30 % modulation, 1 kHz tone, audio filter in.
FM: Typically 20 dB (14 dB < 26 MHz) for 0 dBµV signal, 1.5 kHz peak deviation, 1 kHz tone, audio filter in.

Audio Filter

300 Hz ±50Hz - 1 dB to 2.4 kHz ± 300 Hz - 3 dB (switchable).

600 Ω Line Output

Adjustable from Front Panel. Nominally 0 dBm (600 Ω)

Audio Output

1.0 W to 3.0 W (dependent upon battery state)

AM

Range

0 to 90% (0 to 126% indicated)

Accuracy

± 5%

FM (7.5 kHz bandwidth)

Range

0 - 3.7 kHz peak deviation
(0 - 4.2 kHz indicated)

Accuracy

± 500 Hz

FM (15 kHz bandwidth)

Range

0 - 7.5 kHz peak deviation
(0 - 8.4 kHz indicated)

Accuracy

± 500 Hz

FM (20 kHz bandwidth)

Range

0 - 10 kHz peak deviation
(0 - 16.8 kHz indicated)

Accuracy

± 500 Hz

FM (25 kHz bandwidth)

Range

0 - 12.5 kHz peak deviation
(0 - 16.8 kHz indicated)

Accuracy

± 500 Hz

FM
(120 kHz bandwidth)

Range

0 - 60 kHz peak deviation
(0 - 84 kHz indicated)

Accuracy

± 5 kHz

Memory

40 memories of receiver status

Memory Scanning

All 40 memories or any selected number

Hold Time

Adjustable 0 - 9.9 seconds

Dwell Time

Adjustable 0 - 9.9 seconds

Resume Time

Adjustable 0 - 9.9 seconds and OFF

Memory Backup

10 years

Serial Data

RS 232 control of all functions

Loudspeaker

1.0 W to 3.0 W into 8 Ω (dependent upon battery state)

Low Level Audio (Line Out)

Variable using Front Panel control but nominally 0 dBm (600 Ω)

Signal Level

Full scale on bargraph 6 V
Noise level approx 2V (typical)

2 Squelch Operated Changeover Relay Contacts

Maximum 0.5 A, 28 V dc contacts electrically isolated from receiver.

Demodulation

Unfiltered demodulator output