AOR AR5000c Kurzanleitung

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high performance wide band all mode receiver 10 kHz - 2600 MHz

Since the release of the AR5000, professional monitors, top-end hobbyists, government departments

and armed forces throughout the world have been astonished how the seemingly impossible has been

achieved: unparalleled high performance, an amazingly flexible operating system, high build quality

featuring a metal cabinet - yet still remaining very compact and relatively light weight. There is little

competition for comparison, 'the rest of the pack' are significantly larger, heavier or many times more

expensive!

AR5000+3 awarded four starts by both the authoritative Passport To World Band Radio and World Radio & TV Handbook

True base receivers are few and far between, some have simply evolved

from the hand held equivalents with little tangible improvement in

performance or facilities over their smaller counterparts (or use switched

wide band converters) - the AR5000 is not like this! AOR have been

synonymous with pioneering receiver design from many years and this

tradition continues with the AR5000. A great advancement in wide band

front end design has been made, partly due to the introduction of automatic

electronic preselection between 500kHz - 999.999999MHz with low pass,

band pass and high pass filters for other bands. The preselection may be

"manually tracked" when monitoring spot frequencies to help reduce any

potential effects of interference caused by nearby monster transmitters,

this results in excellent strong signal handling yet maintains high sensitivity.

A TCXO forms the building block which is fitted as standard to ensure a

very high degree of stability, provision is made to feed the AR5000 from an

external 10 MHz reference signal should one be available (commercial

organisations etc). A Numeric Controlled Oscillator (NCO) provides

smooth tuning with steps right down to 1Hz. The receive circuitry is a

triple conversion superheterodyne with I.F.s' of 622MHz, 10.7MHz & 455kHz.

Multiple switchable I.F. bandwidths are available in both the 10.7MHz and

455kHz I.F. stages: 3kHz, 6kHz, 15kHz, 30kHz, 110kHz & 220kHz with

provision for an optional 500Hz Collins mechanical filter, also a substitute

2.5kHz Collins mechanical SSB filter and Collins mechanical 5.5kHz narrow

AM filter option is available.

The AR5000 is housed in a stylish custom solid metal cabinet and is

powered from the supplied external 12V d.c. power unit but may be operated

from any regulated supply or battery capable of providing 12-16V @

1.5Amps. Aerial input is via a high quality N-TYPE connector with a second

SO239 connector which is switchable manually or automatically from the

front panel. A switchable preamplifier is employed (below 230 MHz) plus a

switchable 10dB attenuator, this may be configured as "auto" so that the

receiver selects the optimum setting automatically.

AR5000, AR5000c, AR5000+3

Not only is the RF performance outstanding, the microprocessor facilities

also point to the forward and innovative thinking which forms the core of the

success. There are 1,000 memory channels, 10 scan banks, 20 search

banks with auto-memory store and a total of 2100 PASS frequencies,

5 independent VFOs, alpha-tag memory & search banks, frequency offset,

step adjust and auto-mode tuning to name just a few.

The 1,000 memory channels (10 banks x 100 channels), 20 search banks

etc are stored by EEPROM so that no external supply, battery or capacitor

is required for data retention. In addition EEPROM BANK SWITCHING

means that all the memory channels, search banks, pass frequencies and

VFOs are PROVIDED TWICE (making a total of 2,000 memory channels,

40 search banks, 10 VFOs etc). This is an ideal situation when more than

one operator is to use the equipment, each have their own 'virtual' set.

Scanning and search speed is a very respectable maximum of 45 channels

or increments per second using "Cyber Scan" technology. A meaningful

& detailed auto-mode bandplan has been preprogrammed (specific to each

market area) so that operation is straight forward and quick. Should you

wish, auto-mode may be easily cancelled by selecting a different step size

or mode. A special Frequency Offset facility plus step adjust has been

provided to simplify DUPLEX frequency monitoring and for tracking unusual

band plans. A wide variety of search and scan types are available including

memory scan, select scan (your temporary favourite frequency notepad!),

mode scan, bank scan, pause scan, search bank link etc with channel edit

facilities for changing memory contents. The squelch too may be configured

for noise, signal level, audio level etc.

Audio low pass and high pass filters may be configured and are

switchable around the following frequencies: LPF 3kHz, 4kHz, 6kHz &

12kHz, HPF 0.05kHz, 0.2kHz, 0.3kHz & 0.4kHz. De-emphasis is also

selectable: THRU, 25uS, 50uS, 75uS & 750uS. A DTMF decoder is

provided to display DTMF characters in use with an optional CTCSS

board to display the CTCSS frequency.