Winter Field Day is this weekend! 
 
Rules can be found here: https://winterfieldday.org/downloads/2026-rules-v3.pdf
When: Saturday 8:00AM PST until Sunday Jan 25 2:00PM  (Jan 24th 1600 UTC - Jan 25 21:59 UTC)
 
Power: All stations are limited to a maximum of 100 Watts PEP.
 
Bands:  All Amateur bands may be used except 12, 17, 30, and 60 meters
 
Modes: All modes, except WSJT* modes, may be used. Modes are combined into three groups: CW, Phone, and Digital, may be used. Phone includes SSB, AM, FM, DMR, C4FM, etc. If the end result is voice, it’s Phone. Digital  includes PSK, RTTY, Olivia, Packet, SSTV, ATV, JS8Call, and other soundcard modes. If the end result is text or a picture, it’s Digital. (*WSJT modes include FST4, FT4, FT8, JT4, JT9, JT65, Q65, MSK144, WSPR, FST4W, and Echo. These modes do not support passing emergency traffic effectively and therefore are not appropriate for Winter Field Day.)
 
Exchange: Your call sign, a category number, a class identifier, and a location identifier.
Category: A number designated by the number of transceivers (stations) at your location that are capable of transmitting simultaneously.
Class Identifier:  
H - Home station: is any station located inside a permanent livable residence.
I - Indoor station: is any station operating away from Home but from inside an insulated, weather-protected building (or structure) on a permanent foundation. Indoor stations typically have plumbing, heating/cooling, and running water. Church, EOCs, a club shack, a cabin, and community centers are all examples of an Indoor station.
O - Outdoor station: Outdoor stations operate from a partly or fully exposed building or shelter that does not typically have plumbing, heating/cooling, or running water available. Operating from a picnic table, park pavilion, tents, or under pop-up canopies are all places that could be considered Outdoor. These are locations where you may have to provide your own heat source and/or protection from the elements.
M - Mobile / Mobile Stationary: These stations are operations from a mobile or potentially mobile structure like an RV, car, van, sailboat, cargo trailer, mobile EOC, bus, plane, ETC. These are operating positions that may offer some sort of built-in heating/cooling. Mobile stations do not have to be mobile during the event. They must have the ability to be mobile, should it be necessary to move during the event. RVs and cargo trailers with external antennas set up are still considered Mobile.
Location Identifier: US and Canadian stations will use the ARRL / RAC Section as designated by those organizations (SB for us)
 
Very much like Field Day in June.  My exchange from my house would be "AI6VX 1H SB"
 
Give it a try!  Even if you don't plan on uploading your logs, there will be lots of opportunity to play with radio this weekend!
 
Dave AI6VX