Specification - AOR AR8200 Manual

Propagation
VHF and UHF transmissions generally only propagate relatively short distances when compared to short wave signals. For all
intents and purposes they may be considered as line-of-sight plus a bit.
Where as point to point communication between mobile users or when in built up areas may only be a couple of kilometres, aircraft
at heights of 30,000 feet may be heard for many tens of kilometres (100 to 300 with the right conditions).
Unlike VHF and UHF transmissions which generally propagate only on a localised basis (to the horizon plus a small amount), short
wave transmissions may travel for many thousands of kilometres. Depending upon the frequency in use, time of day, season of the
year and sun spot activity, transmissions may propagate completely around the World.
Luckily the frequency spectrum of short wave is often reflected back down to Earth by the upper layer of the Earth's atmosphere
called the ionosphere. When the reflected signals reach the Earth again they may either be received or reflected back up into
space. If lucky, they will be reflected by the ionosphere yet again down toward the Earth providing reception into another and
possibly more distant location. Depending upon the time of day and desired skip distance, different frequencies will be selected by
Radio Amateurs and commercial users such as Oceanic Air Traffic.

(22) Specification

Frequency Range:
Receive Modes:
Sensitivity:
Selectivity:
Power Consumption:
Dimensions:
Weight:
Memory channels:
Select scan channels:
Priority channels:
500 kHz to 2040 MHz
(Actual frequency input 100 kHz to 2040 MHz,
performance between 100 kHz to 530 kHz is
not guaranteed).
WFM, NFM, SFM, WAM, AM, NAM, USB, LSB, CW
500 kHz ~ 2.0 MHz
AM: 3.50 µV (10dB S/N)
2.0 MHz ~ 30 MHz
SSB: 1.50 µV (10dB S/N)
AM: 2.50 µV (10dB S/N)
30 MHz ~ 470 MHz
SSB: 0.30 µV (10dB S/N)
AM: 0.70 µV (10dB S/N)
NFM: 0.35 µV (12dB SINAD)
WFM: 1.00 µV (12dB SINAD)
470 MHz ~ 1 GHz
NFM: 0.50 µV (12dB SINAD)
WFM: 1.50 µV (12dB SINAD)
1.0 GHz ~ 1.3 GHz
NFM: 1.00 µV (12dB SINAD)
1.3 GHz ~ 2.039 GHz
NFM: 2.50 µV (12dB SINAD)
SSB/NAM 3kHz (-6dB),
AM/SFM 9kHz (-6dB),
WAM/NFM 12kHz (-6dB),
WFM 150kHz (-3dB), 380kHz (-20dB)
190mA (nominal), 145mA (stand by), 25mA (power save).
4 x AA internal cells or 12V d.c. external supply
61(W) x 143(H) x 39(D) mm
196g (335g including NiCads)
1,000 (20 banks)
50
1
9kHz (-60dB)
20kHz (-40dB)
25kHz (-40dB)