AOR UK Ltd.,
überarbeitet am 8.12.2007
AR7030 - a "Blackbox" with only few knobs
In early 1996, the UK branch of the Japanese manufacturer AOR presented the AR7030,
some of the critics were enthousiastic, for others, the operating scheme with
controlling a complex receiver from a few knobs with several programmable
functions was too confusing...
The black metal cabinet with its dimensions of 24 x 9 x 22,5 cm
and 2,2 kg of weight has no room for the power supply , so the AR7030 has an
external 15V power supply, when operated from 12V DC from a car battery, the receiver
cannot keep up with all specifications.
Underneath the backlit green - yellow dot matrix LCD display, You find four pushbuttons and a rotatory control. Their function is dependant on the momentary reception mode - this fact can make the operation a bit tricky. According to the operation mode, the pushbuttons will switch the bandwidth filters and the rotary control will act as Passband Tuning Control, the pushbuttons will control the memory functions and the rotary control gives You choice of the memory slots, or the pushbuttons will activate AGC speed and Noise Blanker and the rotary control will activate the RF gain.
At the left hand of the front panel, You find the Volume control, the Main Menue pushbutton and the On/Off - switch that has to be pressed twice to power down the receiver. During operation, the signal strength is indicated via a LCD bargraph.
At the rear of the set, You find the switchable long wire and 50 Ohm antenna connectors at the heft, the connectors for external speaker, power supply, computer control, AF out and timer relais connectors. An infrared remote control can be used for direct frequency entry, for direct access to the different reception modes and for controlling the IF bandwidths and passband tuning, the infrared sensors are located at the front panel and on the rear.
The HF signal from the antenna is directed via a switchable attenuator
and a high pass (>1,7 MHz) and low pass (<32 MHz) over an RF amplification
stage to the first mixer, where the first intermediate frequency of 45 MHz
is generated and mixed to the second IF of 455 kHz in second mixer. Then
the signal has to pass one of six switchable IF filters. After amplification
it will be forwarded to the product detector or narrow band FM demodulator.
In it's basic version, the AR7030 has 100 programmable memories, in the AR7030-plus - version, You will find 400 memories with a possibility of alphanumeric memory identification. When You cross a channel stored in a memory, Your AR7030 will display a station's name, when it has programmed to this frequency before. There is an optional computer control software running from Windows 3.1 and Windows 95 available from AOR.
In European shortwave reception conditions with very high signal levels
and crowded shortwave broadcast bands, the AR7030 is a very reliable receiver
not susceptible to intermodulation / crossmodulation problems.
© Martin Bösch 25.7.1999