It seems like every year summer or winter field day comes around, like many others I am scrambling to try to recall a decode what the correct exchange is suppose to be. To solve this issue I created this quick reference guide for the Winter Field Day 2026 exchange.
Location
Area 1
Connecticut
CT
Eastern Massachusetts
EMA
Maine
ME
New Hampshire
NH
Rhode Island
RI
Vermont
VT
Western Massachusetts
WMA
Area 2
Eastern New York
ENY
NYC / Long Island
NLI
Northern New Jersey
NNJ
Northern New York
NNY
Southern New Jersey
SNJ
Western New York
WNY
Area 3
Delaware
DE
Eastern Pennsylvania
EPA
Maryland – DC
MDC
Western Pennsylvania
WPA
Area 4
Alabama
AL
Georgia
GA
Kentucky
KY
North Carolina
NC
Northern Florida
NFL
South Carolina
SC
Southern Florida
SFL
Tennessee
TN
Virginia
VA
West Central Florida
WCF
Puerto Rico
PR
US Virgin Islands
VI
Area 5
Arkansas
AR
Louisiana
LA
Mississippi
MS
New Mexico
NM
North Texas
NTX
Oklahoma
OK
South Texas
STX
West Texas
WTX
Area 6
East Bay
EB
Los Angeles
LAX
Orange
ORG
Santa Barbara
SB
Santa Clara Valley
SCV
San Diego
SDG
San Francisco
SF
San Joaquin Valley
SJV
Sacramento Valley
SV
Pacific
PAC
Area 7
Alaska
AK
Arizona
AZ
Eastern Washington
EWA
Idaho
ID
Montana
MT
Nevada
NV
Oregon
OR
Utah
UT
Western Washington
WWA
Wyoming
WY
Area 8
Michigan
MI
Ohio
OH
West Virginia
WV
Area 9
Illinois
IL
Indiana
IN
Wisconsin
WI
Area 0
Colorado
CO
Iowa
IA
Kansas
KS
Minnesota
MN
Missouri
MO
Nebraska
NE
North Dakota
ND
South Dakota
SD
Canada
Maritime
MAR
Newfoundland Labrador
NL
Quebec
QC
Ontario East
ONE
Ontario North
ONN
Ontario South
ONS
Prince Edward Island
PE
Saskatchewan
SK
Alberta
AB
British Columbia
BC
Manitoba
MB
Northern Territories
NT
Greater Toronto Area
GTA
Mexico
Mexico
MX
Other
Outside of US, Canada or Mexico
DX
Examples
1HAL Single Station, Home station, Alabama 3ISDG3 Stations, Indoor, San Diego
