Kaelus iPA-1921A Dual-Band PCS/AWS Portable PIM Analyzer
The Kaelus iPA-1921A is a battery powered passive intermodulation (PIM) analyzer built for cell site testing. PIM is interference created by nonlinear connections, corroded joints, loose connectors, and damaged antennas and it degrades uplink signal quality and network capacity. The Kaelus iPA-1921A was billed as the first battery powered PIM analyzer versatile enough for tests at the top of the tower the base of the tower, the roof top, and inside buildings on DAS systems. It is a 20 W IEC compliant instrument designed with tower climbers in mind.
Key Features
- Battery-powered and portable: a rugged, field ready design for climbing and rooftop work
- 20 W test power: two carriers at 20 W each meeting IEC requirements for PIM testing
- Dual-band PCS/AWS coverage: TX1 at 1930 to 1950 MHz, TX2 at 1970 to 1990 MHz (PCS) or 2110 to 2155 MHz (AWS) with receive (PIM) ranges of 1850 to 1910 MHz and 1710 to 1755 MHz
- Strong residual PIM performance: better than -117 dBm (-160 dBc) maximum and typically better than -125 dBm (-168 dBc) at 2 × 20 W
- Reverse (reflected) PIM measurement: 3rd and 5th order intermodulation products
- Wireless remote control: operate it from any Wi-Fi-enabled phone, tablet, or laptop for safe hands free dynamic testing (some kits include a 7-inch ruggedized tablet)
- Touch screen interface: simple local control for running tests and generating site reports
- Fully configurable: frequencies, powers, and IM products can be set to suit the test
- Measurement modes: spectrum monitor, frequency sweep, and time trace
- Optional Range to Fault (RTF) module: adds Distance to PIM and Distance to Fault with return loss to locate PIM and return loss sources quickly (the RTF-2000A is typically paired with this model)
- Reporting: extensive on board report generation
Typical Applications
- Cell site commissioning and maintenance
- Finding PIM sources on antennas, jumpers, connectors, and feed lines
- In building and DAS system PIM testing
- Rooftop and tower top testing
- Improving uplink performance and capacity on LTE and other networks
Why Choose It
PIM can quietly cut network capacity and data speeds. The Kaelus iPA-1921A lets technicians find and fix those faults on site without bulky mains powered equipment and the RTF option points straight to the source.






