Second Hand RigExpert AA55 Zoom Antenna Analyser 1
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Second Hand Radio equipment

Second Hand RigExpert AA55 Zoom Antenna Analyser

Boxed, and like BRAND NEW CONDITION!

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£219.00
(£219.00 exc. VAT)
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Product code: SH-AA-55-ZOOM
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Item CostFinance OptionDepositMonthly PaymentsTotal Cost
£219.00
12 Months 14.9% APR
£21.90
£18.87
£248.37
£219.00
18 Months 14.9% APR
£21.90
£12.58
£248.37
£219.00
24 Months 14.9% APR
£21.90
£9.44
£248.37
£219.00
36 Months 14.9% APR
£21.90
£6.29
£248.37
£219.00
48 Months 14.9% APR
£21.90
£4.72
£248.37
£219.00
12 Months 19.5% APR
£21.90
£19.63
£257.43
£219.00
18 Months 19.5% APR
£21.90
£13.09
£257.43
£219.00
24 Months 19.5% APR
£21.90
£9.81
£257.43
£219.00
36 Months 19.5% APR
£21.90
£6.54
£257.43
£219.00
48 Months 19.5% APR
£21.90
£4.91
£257.43

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Second Hand RigExpert AA55 Zoom Antenna Analyser 1

Second Hand RigExpert AA55 Zoom Antenna Analyser


Second Hand RigExpert AA55 Zoom Antenna Analyser, The analyzer is designed for measuring SWR (standing wave ratio), return loss, cable loss, as well as other parameters of cable and antenna systems in the range of 60 kHz to 55 MHz. A built-in ZOOM capability makes graphical measurements especially effective.The following tasks are easily accomplished by using this analyzer:

Rapid check-out of an antenna

Tuning an antenna to resonance

Comparing characteristics of an antenna before and after specific event (rain, hurricane, etc.)

Making coaxial stubs or measuring their parameters

Cable testing and fault location, measuring cable loss and characteristic impedance

Measuring capacitance or inductance of reactive loads

The “brain” of the analyzer is STM 32-bit RISC microcontroller. It controls a Si5351 PLL chip running at 500 MHz and generating two sinusoidal signals. Both signals are low-pass filtered and then put through pulse shapers, producing two square signals with CMOS levels. Resistive brigde was chosen to measure parameters of a load because of its simplicity and good frequency response. The switch commutates two outputs of the bridge. After the switch, the signal is mixed with the second channel output to produce audio frequency of 1.5 kHz.This signal is then filtered and fed on the 12-bit ADC of the microcontroller. The 320×240 color TFT display and the 6×3 keys keypad are connected directly to the CPU. The USB interface allows connecting the analyzer to the PC.

The switch which is controlled by the CPU feeds the signal from the certain side of the bridge to the mixer chip. When the load is totally active and its resistance is 50 Ω, the bridge is balanced and the switch outputs the same signal in both positions. This eliminates the need of calibration of the analyzer, also giving very good precision near SWR=1.

Included:

RigExpert AA-55 ZOOM

USB cable

User’s manual

Software manual

Alkaline batteries

Boxed, and like BRAND NEW CONDITION!

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