AIR-AP1852I-S-K9 Cisco Aironet 1852i Access Point

AIR-AP1852I-S-K9 S-Domain RF Capacity Record

AIR-AP1852I-S-K9 identifies the S-domain, controller-managed 1852i. It has internal omnidirectional antennas, a 3x4:3 2.4 GHz radio, a four-stream 5 GHz radio and two copper Gigabit interfaces.

S-domain three-range 5 GHz inventory

Cisco specifies eight channels at 5.180-5.320 GHz, eleven at 5.500-5.700 GHz and five at 5.745-5.825 GHz, alongside 2.412-2.472 GHz at 2.4 GHz. Confirm legal channel and power settings for the deployment country; the narrow AIR-AP1852I-I-K9 profile is not interchangeable.

RF survey and controller policy

The broader channel inventory still depends on local DFS and controller configuration. Preserve the target site's radio-resource settings, channel-width policy and exclusion list. Test controller discovery, code alignment, AP-group assignment and client roaming before replacing an installed AP.

LAG readiness under PoE

The second Gigabit interface is an AUX port used for link aggregation, but 802.3af disables both AUX and USB. Commission with the intended PSE, verify both switch links and confirm the controller-side LAG design before advertising dual-link resilience.

Obsolescence decision

Cisco ended this product family in 2022 and identifies Catalyst 9115AX as the migration path. With last support on 30 April 2027, the quote record should state controller support, entitlement status, join-certificate risk and the replacement date.

Official evidence: Cisco S-domain channels, LAG and PoE limitations, Cisco 1852i mounting and controller guidance, Cisco exact S-domain retirement listing and Cisco country compliance lookup.