Spec Sheet

GENERAL RESEARCH OF ELECTRONICS, INC. REF. NO. 11001
- 5 -
Nominal Limit
2.9. WX alert tone priority checking time: 3.0 sec. 24 sec.
Note: When receiving WX alert in priority operation, the priority sampling time up to 2 sec.
is added to this depending on Alert tone transmission timing.
2.10. Image ratio 1
st
IF image : VHF Low at 41 MHz 50 dB 40 dB
VHF FM Radio at 98 MHz 50 dB 40 dB
VHF Aircraft at 124 MHz 50 dB 40 dB
VHF High at 154.1 MHz 50 dB 40 dB
UHF Low/T at 450 MHz 40 dB 30 dB
UHF High at 860 MHz 40 dB 30 dB
1270 MHz 40 dB 30 dB
2
nd
IF image :VHF High at 154.1 MHz 50 dB 40 dB
2.11. Attenuator : VHF Low at 41 MHz 20 dB 16 - 23 dB
VHF FM Radio at 98 MHz 20 dB 16 - 23 dB
VHF Aircraft at 124 MHz 20 dB 15 - 22 dB
VHF High at 154.1 MHz 20 dB 15 - 22 dB
UHF Low/T at 450 MHz 20 dB 15 - 22 dB
UHF High at 860 MHz 16 dB 10 - 20 dB
at 1270 MHz 16 dB 10 - 20 dB
2.12. Squelch sensitivity
Squelch SW Low : AM/FM 0.5 PV 2.0 PV
FM Radio 1.0 PV 3.0 PV
Squelch SW Hi : AM 25 dB 15 dB
AM/FM : (S+N)/N = 20 dB FM 30 dB 20 dB
FM Radio : (S+N)/N = 30 dB FM Radio 45 dB 35 dB
2.13. Selectivity :
AM 25  27.995 MHz 6 dB r4 kHz 䠚r2.5 kHz
50 dB r6 kHz 䠘r12 kHz
Other frequency 6 dB r8 kHz >r5 kHz
50 dB r17 kHz <r24 kHz
FM Radio 88 – 107.9 MHz 6 dB r50 kHz >r35 kHz
50 dB r160 kHz <r240 kHz
2.14. Spurious rejection : VHF High at 154.1 MHz 40 dB 30 dB
(Except Primary image)
2.15. IF rejection ratio : 380.8 MHz at 154.1 MHz 80 dB 60 dB
10.7 MHz at 154.1 MHz 100 dB 80 dB