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Display Filter Reference: IEEE 802.11 Radiotap Capture header
Protocol field name: radiotap
Versions: 1.0.0 to 1.6.5
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| Field name | Type | Description | Versions |
|---|---|---|---|
| radiotap.antenna | Unsigned integer, 4 bytes | Antenna | 1.0.0 to 1.6.5 |
| radiotap.channel | Unsigned integer, 4 bytes | Channel | 1.0.0 to 1.6.5 |
| radiotap.channel.freq | Unsigned integer, 4 bytes | Channel frequency | 1.0.0 to 1.6.5 |
| radiotap.channel.type | Unsigned integer, 2 bytes | Channel type | 1.0.0 to 1.6.5 |
| radiotap.channel.type.2ghz | Boolean | 2 GHz spectrum | 1.0.0 to 1.6.5 |
| radiotap.channel.type.5ghz | Boolean | 5 GHz spectrum | 1.0.0 to 1.6.5 |
| radiotap.channel.type.cck | Boolean | Complementary Code Keying (CCK) | 1.0.0 to 1.6.5 |
| radiotap.channel.type.dynamic | Boolean | Dynamic CCK-OFDM | 1.0.0 to 1.6.5 |
| radiotap.channel.type.gfsk | Boolean | Gaussian Frequency Shift Keying (GFSK) | 1.0.0 to 1.6.5 |
| radiotap.channel.type.gsm | Boolean | GSM (900MHz) | 1.0.0 to 1.6.5 |
| radiotap.channel.type.half | Boolean | Half Rate Channel (10MHz Channel Width) | 1.0.0 to 1.6.5 |
| radiotap.channel.type.ofdm | Boolean | Orthogonal Frequency-Division Multiplexing (OFDM) | 1.0.0 to 1.6.5 |
| radiotap.channel.type.passive | Boolean | Passive | 1.0.0 to 1.6.5 |
| radiotap.channel.type.quarter | Boolean | Quarter Rate Channel (5MHz Channel Width) | 1.0.0 to 1.6.5 |
| radiotap.channel.type.sturbo | Boolean | Static Turbo | 1.0.0 to 1.6.5 |
| radiotap.channel.type.turbo | Boolean | Turbo | 1.0.0 to 1.6.5 |
| radiotap.channel.xtype.passive | Boolean | Passive | 1.0.0 to 1.6.5 |
| radiotap.datarate | Floating point (single-precision) | Data rate (Mb/s) | 1.0.0 to 1.6.5 |
| radiotap.db_antnoise | Unsigned integer, 4 bytes | SSI Noise (dB) | 1.0.0 to 1.6.5 |
| radiotap.db_antsignal | Unsigned integer, 4 bytes | SSI Signal (dB) | 1.0.0 to 1.6.5 |
| radiotap.db_txattenuation | Unsigned integer, 2 bytes | Transmit attenuation (dB) | 1.0.0 to 1.6.5 |
| radiotap.dbm_antnoise | Signed integer, 4 bytes | SSI Noise (dBm) | 1.6.0 to 1.6.5 |
| radiotap.dbm_antsignal | Signed integer, 4 bytes | SSI Signal (dBm) | 1.0.0 to 1.6.5 |
| radiotap.fcs | Unsigned integer, 4 bytes | 802.11 FCS | 1.0.0 to 1.6.5 |
| radiotap.fcs_bad | Boolean | Bad FCS | 1.0.0 to 1.6.5 |
| radiotap.fhss.hopset | Unsigned integer, 1 byte | FHSS Hop Set | 1.0.0 to 1.6.5 |
| radiotap.fhss.pattern | Unsigned integer, 1 byte | FHSS Pattern | 1.0.0 to 1.6.5 |
| radiotap.flags | Unsigned integer, 1 byte | Flags | 1.0.0 to 1.6.5 |
| radiotap.flags.badfcs | Boolean | Bad FCS | 1.0.0 to 1.6.5 |
| radiotap.flags.cfp | Boolean | CFP | 1.0.0 to 1.6.5 |
| radiotap.flags.datapad | Boolean | Data Pad | 1.0.0 to 1.6.5 |
| radiotap.flags.fcs | Boolean | FCS at end | 1.0.0 to 1.6.5 |
| radiotap.flags.frag | Boolean | Fragmentation | 1.0.0 to 1.6.5 |
| radiotap.flags.preamble | Boolean | Preamble | 1.0.0 to 1.6.5 |
| radiotap.flags.shortgi | Boolean | Short GI | 1.0.0 to 1.6.5 |
| radiotap.flags.wep | Boolean | WEP | 1.0.0 to 1.6.5 |
| radiotap.length | Unsigned integer, 2 bytes | Header length | 1.0.0 to 1.6.5 |
| radiotap.mactime | Unsigned integer, 8 bytes | MAC timestamp | 1.0.0 to 1.6.5 |
| radiotap.mcs | Label | MCS information | 1.6.0 to 1.6.5 |
| radiotap.mcs.bw | Unsigned integer, 1 byte | Bandwidth | 1.6.0 to 1.6.5 |
| radiotap.mcs.fec | Unsigned integer, 1 byte | FEC | 1.6.0 to 1.6.5 |
| radiotap.mcs.format | Unsigned integer, 1 byte | Format | 1.6.0 to 1.6.5 |
| radiotap.mcs.gi | Unsigned integer, 1 byte | Guard interval | 1.6.0 to 1.6.5 |
| radiotap.mcs.have_bw | Boolean | Bandwidth | 1.6.0 to 1.6.5 |
| radiotap.mcs.have_fec | Boolean | FEC | 1.6.0 to 1.6.5 |
| radiotap.mcs.have_format | Boolean | Format | 1.6.0 to 1.6.5 |
| radiotap.mcs.have_gi | Boolean | Guard interval | 1.6.0 to 1.6.5 |
| radiotap.mcs.have_index | Boolean | MCS index | 1.6.0 to 1.6.5 |
| radiotap.mcs.index | Unsigned integer, 1 byte | MCS index | 1.6.0 to 1.6.5 |
| radiotap.mcs.known | Unsigned integer, 1 byte | Known MCS information | 1.6.0 to 1.6.5 |
| radiotap.pad | Unsigned integer, 1 byte | Header pad | 1.0.0 to 1.6.5 |
| radiotap.present | Label | Present flags | 1.0.0 to 1.6.5 |
| radiotap.present.antenna | Boolean | Antenna | 1.0.0 to 1.6.5 |
| radiotap.present.channel | Boolean | Channel | 1.0.0 to 1.6.5 |
| radiotap.present.db_antnoise | Boolean | DB Antenna Noise | 1.0.0 to 1.6.5 |
| radiotap.present.db_antsignal | Boolean | DB Antenna Signal | 1.0.0 to 1.6.5 |
| radiotap.present.db_tx_attenuation | Boolean | DB TX Attenuation | 1.0.0 to 1.6.5 |
| radiotap.present.dbm_antnoise | Boolean | DBM Antenna Noise | 1.0.0 to 1.6.5 |
| radiotap.present.dbm_antsignal | Boolean | DBM Antenna Signal | 1.0.0 to 1.6.5 |
| radiotap.present.dbm_tx_attenuation | Boolean | DBM TX Attenuation | 1.0.0 to 1.6.5 |
| radiotap.present.ext | Boolean | Ext | 1.0.0 to 1.6.5 |
| radiotap.present.fcs | Boolean | FCS in header | 1.0.0 to 1.6.5 |
| radiotap.present.fhss | Boolean | FHSS | 1.0.0 to 1.6.5 |
| radiotap.present.flags | Boolean | Flags | 1.0.0 to 1.6.5 |
| radiotap.present.lock_quality | Boolean | Lock Quality | 1.0.0 to 1.6.5 |
| radiotap.present.mcs | Boolean | HT information | 1.6.0 to 1.6.5 |
| radiotap.present.rate | Boolean | Rate | 1.0.0 to 1.6.5 |
| radiotap.present.rtap_ns | Boolean | Radiotap NS next | 1.6.0 to 1.6.5 |
| radiotap.present.rxflags | Boolean | RX flags | 1.2.0 to 1.6.5 |
| radiotap.present.tsft | Boolean | TSFT | 1.0.0 to 1.6.5 |
| radiotap.present.tx_attenuation | Boolean | TX Attenuation | 1.0.0 to 1.6.5 |
| radiotap.present.vendor_ns | Boolean | Vendor NS next | 1.6.0 to 1.6.5 |
| radiotap.present.xchannel | Boolean | Channel+ | 1.0.0 to 1.6.5 |
| radiotap.quality | Unsigned integer, 2 bytes | Signal Quality | 1.0.0 to 1.6.5 |
| radiotap.rxflags | Unsigned integer, 2 bytes | RX flags | 1.2.0 to 1.6.5 |
| radiotap.rxflags.badplcp | Boolean | Bad PLCP | 1.2.0 to 1.6.5 |
| radiotap.txattenuation | Unsigned integer, 2 bytes | Transmit attenuation | 1.0.0 to 1.6.5 |
| radiotap.txpower | Signed integer, 4 bytes | Transmit power | 1.0.0 to 1.6.5 |
| radiotap.vendor_data | Label | Vendor data | 1.6.0 to 1.6.5 |
| radiotap.vendor_data_len | Unsigned integer, 2 bytes | Vendor data length | 1.6.0 to 1.6.5 |
| radiotap.vendor_namespace | Sequence of bytes | Vendor namespace | 1.6.0 to 1.6.5 |
| radiotap.vendor_oui | Sequence of bytes | Vendor OUI | 1.6.0 to 1.6.5 |
| radiotap.vendor_subns | Unsigned integer, 1 byte | Vendor sub namespace | 1.6.0 to 1.6.5 |
| radiotap.version | Unsigned integer, 1 byte | Header revision | 1.0.0 to 1.6.5 |
| radiotap.xchannel | Unsigned integer, 4 bytes | Channel number | 1.0.0 to 1.6.5 |
| radiotap.xchannel.flags | Unsigned integer, 4 bytes | Channel type | 1.0.0 to 1.6.5 |
| radiotap.xchannel.freq | Unsigned integer, 4 bytes | Channel frequency | 1.0.0 to 1.6.5 |
| radiotap.xchannel.type.2ghz | Boolean | 2 GHz spectrum | 1.0.0 to 1.6.5 |
| radiotap.xchannel.type.5ghz | Boolean | 5 GHz spectrum | 1.0.0 to 1.6.5 |
| radiotap.xchannel.type.cck | Boolean | Complementary Code Keying (CCK) | 1.0.0 to 1.6.5 |
| radiotap.xchannel.type.dynamic | Boolean | Dynamic CCK-OFDM | 1.0.0 to 1.6.5 |
| radiotap.xchannel.type.gfsk | Boolean | Gaussian Frequency Shift Keying (GFSK) | 1.0.0 to 1.6.5 |
| radiotap.xchannel.type.gsm | Boolean | GSM (900MHz) | 1.0.0 to 1.6.5 |
| radiotap.xchannel.type.half | Boolean | Half Rate Channel (10MHz Channel Width) | 1.0.0 to 1.6.5 |
| radiotap.xchannel.type.ht20 | Boolean | HT Channel (20MHz Channel Width) | 1.0.0 to 1.6.5 |
| radiotap.xchannel.type.ht40d | Boolean | HT Channel (40MHz Channel Width with Extension channel below) | 1.0.0 to 1.6.5 |
| radiotap.xchannel.type.ht40u | Boolean | HT Channel (40MHz Channel Width with Extension channel above) | 1.0.0 to 1.6.5 |
| radiotap.xchannel.type.ofdm | Boolean | Orthogonal Frequency-Division Multiplexing (OFDM) | 1.0.0 to 1.6.5 |
| radiotap.xchannel.type.quarter | Boolean | Quarter Rate Channel (5MHz Channel Width) | 1.0.0 to 1.6.5 |
| radiotap.xchannel.type.sturbo | Boolean | Static Turbo | 1.0.0 to 1.6.5 |
| radiotap.xchannel.type.turbo | Boolean | Turbo | 1.0.0 to 1.6.5 |