I think you might be all set with this configuration. There are three requirements listed:
- Netgear A6210 adapter in monitor mode
- Ubuntu 16.04
- PHY header that is unknown
So for (1), there is a driver available on github that supports monitor mode:
https://github.com/cyangy/A6210-mt76x2u_Ubuntu
There are other drivers around, but this one supports monitor+promiscuous mode whereas some others I tried did not.
For item (2), I don't use that distribution so do not know for sure. I have several of these adapters and tested on a recent Kali distribution with kernel:
4.18.0-kali3-amd64 #1 SMP Debian 4.18.20-2kali2 (2018-11-30) x86_64 GNU/Linux
The driver page indicates your Linux version worked for their test.
For (3), I don't know what you need, but some of the fields are present in the radiotap header - from a sample frame via this adapter:
Radiotap Header v0, Length 30
Header revision: 0
Header pad: 0
Header length: 30
Present flags
Flags: 0x00
Data Rate: 6.0 Mb/s
Channel frequency: 5745 [A 149]
Channel flags: 0x0140, Orthogonal Frequency-Division Multiplexing (OFDM), 5 GHz spectrum
Antenna signal: -65dBm
RX flags: 0x0000
Antenna signal: -70dBm
Antenna: 0
Antenna signal: -65dBm
Antenna: 1
Adapter config:
phy#8
Interface wlan0
ifindex 11
wdev 0x800000001
addr dc:ef:09:xx:yy:zz
type monitor
channel 149 (5745 MHz), width: 80 MHz, center1: 5775 MHz
txpower 21.00 dBm