RigExpert AA-35 ZOOM is a compact, portable antenna and cable analyzer designed to provide its users with fast, accurate and convenient measurements. Its range extends from 60 kHz to 35 MHz, which ranks it among the instruments ideal for HF radio amateurs.
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Main features
- Self-calibration and reliability: the analyzer is factory calibrated and provides consistent results without the need for additional calibration
- Color TFT display with a resolution of 320×240 px and a durable membrane keyboard (6×3 keys) allow intuitive and reliable operation.
- Multilingual menu also help available directly in the analyzer
- USB interface enables connection to a PC and simple data transfer.
- Warranty 2 years thanks to the RigExpertCare program, which provides a quick replacement in the event of a breakdown.
Technical parameters of RigExpert AA-35 ZOOM
| Parameter | Value |
|---|---|
| Frequency range | 0.06 – 35 MHz |
| Frequency input resolution | 1 kHz (or 1 Hz depending on the source) |
| Impedance measurement | 25, 50, 75, 100 Ω |
| SWR range | 1–10 (graphically), 1–100 (numerically) |
| R and X range | –1000 to +1000 Ω (graphically), –10000 to +10000 Ω (numerically) |
| Memory | 10 memory slots |
| RF output | UHF (SO-239), +13 dBm |
| Power supply | 2× AA batteries (alkaline or Ni-MH), alternatively USB |
| Battery life | approx. 4 hours of measurement, up to 2 days in standby mode |
| Weight and dimensions | 310 g, 103 × 207 × 37 mm |
| Operating temperature | 0 °C to 40 °C |
| Country of manufacture | Ukraine |
Use in practice
- Quick antenna check – the display will immediately show you SWR, return loss and other parameters.
- Resonance tuning – enables precise tuning of the antenna to the required frequency.
- Comparison before and after the event – for example before rain/after a storm, to monitor changes.
- Production of coaxial stubs – the analyzer will help you determine the exact length of the stump.
- Cable testing and fault location – analyzes losses, characteristic impedance and reveals hidden faults.
- L/C measurement – can measure inductance up to ~100 µH and capacitance up to 0.1 µF.
How it works
It is the brain of the analyzer STM 32-bit RISC microcontroller, which controls the signal generated by the PLL chip Si5351 (500MHz). The latter creates two sine signals that are processed into CMOS square outputs. A resistance bridge with switching outputs is used for measurement, separately mixed to a 1.5 kHz signal and digitized with a 12-bit ADC. LCD and the keyboard are directly connected to the CPU, which also processes entries in the flash memory.
Evaluation and conclusion
RigExpert AA-35 ZOOM it stands out thanks to its ease of use, robustness and a wealth of features at an entry-level price point. It stands out above all for its color display, self-calibration and practical graphic modes (SWR, R/X). The ability to measure reactive components, analyze cable faults and store results makes this device a versatile tool. Although it is not among the latest innovations, it still has a place in the market.
For radio amateurs who need a reliable analyzer for regular HF/VHF antenna tuning, cabling diagnostics or L/C component manufacturing, the AA-35 ZOOM is a great choice. More on https://rigexpert.com/antenna-analyzers/aa-35-zoom