Electrical Specification; Technical Specification - scope GEO40A User Manual

Max. 40 characters Power Up message
Unread reminder
DD/MM or MM/DD date display format selectable
Normal or word wrap display mode
Pre or Post time stamp facility
30 – 180 seconds no alert period for repeated message
'IN RANGE' & 'OUT RANGE' indicator display mode & grace time setting
On-line or OTA programming - for Public message receive mode only

2.3 Electrical Specification

• Rx Frequency
• Sensitivity @1200bps
− Best position:
• Adjacent Channel Rejection
• Spurious Rejection
135-174.999MHz;278-280.999MHz
448-471.99MHz
• Image Rejection
135-174.999MHz;278-280.999MHz
448-471.999MHz
• Intermodulation Rejection
• Frequency stability
• Deviation
• Tone alert level
• Nominal Battery Life

2.4 Technical Specification

• Code Format
• Bit Rate
• Channel Space
− Receiver:
• Modulation Method
GEO40USER
SCOPE GEO40A User Manual
135MHz~175MHz; 278MHz-280.999MHz
448MHz-471.999MHz
20.5dBµV/m 512ps; 22.5dBµV/m /1200bps
> 60dB
> 55dB
50dB
>
50dB /-42.8MHz; -910KHz
>
>40dB/-42.8MHz; 50dB/-910KHz
>50dB
+/- 10ppm
Carrier +/- 4.5KHz
> 80dBc at 30cm away
more than 30 days ('AAA' alkaline battery)
POCSAG
512/1200bps switchable
25KHz
FSK-NRZ
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