With the aironet 350 pci card on my 164LX i get:
<dmesg>
NetBSD 1.6L (NEW) #0: Wed Jan  8 22:01:41 EST 2003
    mel@casey199.doodle.com:/usr/src/sys/arch/alpha/compile/NEW
Digital AlphaPC 164LX 599 MHz, s/n 
8192 byte page size, 1 processor.
total memory = 640 MB
(2136 KB reserved for PROM, 637 MB used by NetBSD)
avail memory = 585 MB
using 4095 buffers containing 32760 KB of memory
mainbus0 (root)
cpu0 at mainbus0: ID 0 (primary), 21164A-2
cpu0: Architecture extensions: 1<BWX>
cia0 at mainbus0: DECchip 2117x Core Logic Chipset (Pyxis), pass 1
cia0: extended capabilities: 1<BWEN>
cia0: using BWX for PCI config access
pci0 at cia0 bus 0
pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
an0 at pci0 dev 5 function 0: Aironet Wireless Communications Aironet
350 Wireless LAN Adapter
an0: interrupting at eb164 irq 2
an0: 802.11 address: 00:0a:8a:fa:a9:81
<snip>....works very well here, difference may be the 350 not the 4800.
-Mel