Main riff:
Bradford uses a pitchfactor pedal and it subsequently
sounds like higher octaves.
The high 'E' is tuned to D sharp/E flat
E|--------------------------------------------------|
B|-9-10-7-------------------------------------------|
G|--------8-----8-----------------------------------|
D|----------7-7-------------------------------------|
A|--------------------------------------------------|
E|--------------------------------------------------|
'Chorus' chords:
The high 'E' is tuned to D sharp/E flat
[ Tab from: https://www.guitartabs.cc/tabs/d/deerhunter/helicopter_tab_ver_3.html ]
Eb|----5----0---------------------------------------|
B|----5----0----------------------------------------|
G|----6----1----------------------------------------|
D|----7----2----------------------------------------|
A|----7----2----------------------------------------|
E|----5----0----------------------------------------|
Or
E|---9-----4----------------------------------------|
B|---9-----4----------------------------------------|
G|---9-----4----------------------------------------|
D|---11----6----------------------------------------|
A|---12----7----------------------------------------|
E|--------------------------------------------------|