1-2 General Information 8525B/8528 Technical Service Manual
Issue 6 Publication No: 15-02036
1.2 Specifications
Specification figures will normally be exceeded by production equipment.
Where relevant, acceptance limits are given in parentheses. All
measurements are made at 13.6V DC, 50Ω source and load, and 25°C
ambient temperature (unless otherwise specified).
1.2.1 General
Specifications
cover
8525B series; 8528 series including
8528S and H versions. (H transmission
specifications included in a separate
Technical Service Manual (code 2037),
covering the 4402 and 4404 PA units).
Frequency Range Transmit: 2 to 24MHz
Receive: 0.25 to 30MHz
Frequency
Generation
All frequencies generated by synthesizer.
Channel Capacity 8525B: 99 single or two-frequency
simplex channels with 10Hz resolution
controlled by plug-in EPROM
8528: single or two-frequency simplex
channels with 10Hz resolution controlled
by plug-in EPROM and 99 EEPROM
controlled channels with 100Hz
resolution.The total number of channels
will depend on the version of 8528 series
to a maximum of 600.
Receive frequencies of the EEPROM—
controlled channels can be entered from
the front panel by the operator.
Transmit frequencies of the EEPROM—
controlled channels can be entered from
the front panel by qualified technical
personnel or (where authorised) by the
operator.
Operating Modes Land: Single sideband (J3E) USB, with
LSB (Option L) or switched sideband
(Option LU) available as options.
Marine: Single sideband (J3E) USB.
LSB may be programmed for specific
frequencies (requires Option L). On
2182kHz J3E or H3E USB selectable.
Frequency
Stability
USB: ±2(3)ppm –30°C to +60°C
LSB: ±2(3)ppm ± 20Hz −30°C to +60°C
Long term ageing 1ppm per year.
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