Raymarine Wireless Mast Rotation Transmitter [T221]
Raymarine Wireless Mast Rotation Transmitter [T221]
This unique transmitter compensates for the movement of a rotating mast to ensure that you get the most accurate wind readings at all times. Operating as a wireless device on a Micronet network the Mast Rotation Transmitter compares compass information from the boat with its own information and corrects the wind angle coming from a standard wind transmitter at the mast head.
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About the instrument.
This unique transmitter compensates for the movement of a rotating mast to ensure that you get the most accurate wind readings at all times. Operating as a wireless device on a Micronet network the Mast Rotation Transmitter compares compass information from the boat with its own information and corrects the wind angle coming from a standard wind transmitter at the mast head. Features:: Quick Guide (pdf)
- No wires
- Solar powered
- Light weight
Product specifications
Full specifications are being added. Call the Field Desk at (704) 709-5290 for details on this item.
No wires
Engineered and field-tested with Raymarine. Raymarine gear, chosen and stocked by the Bucks & Bass Field Desk.
Solar powered
Engineered and field-tested with Raymarine. Raymarine gear, chosen and stocked by the Bucks & Bass Field Desk.
Light weight
Engineered and field-tested with Raymarine. Raymarine gear, chosen and stocked by the Bucks & Bass Field Desk.
Fit notes
Runs true to size with room for a midweight layer underneath. If you are between sizes and plan to layer heavily, size up. Field Desk staff can confirm fit by phone or chat before you order.
Size chart
| Size | Chest | Waist | Sleeve |
|---|---|---|---|
| S | 35–37 | 29–31 | 32.5 |
| M | 38–40 | 32–34 | 33.5 |
| L | 41–43 | 35–37 | 34.5 |
| XL | 44–46 | 38–40 | 35.5 |
| 2XL | 47–49 | 41–43 | 36.5 |
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“Exactly as described. Quiet, well built and the fit is right. Second season with it and no complaints.”
Mark T.Verified buyer • Whitetail“Bought this on a Field Desk recommendation and it was the right call. Shipping was fast.”
Jenna R.Verified buyer • Weekend trips“Solid gear for the money. Would like one more color option but performance is there.”
Cody B.Verified buyer • BassFree standard shipping
Orders over $75 ship free in 3–5 business days. Orders placed before 2 PM ET ship the same day.
Easy 30-day returns
Unused gear in original packaging can be returned within 30 days for a full refund. We email a prepaid label.
Warranty handled for you
Full Raymarine manufacturer warranty. Our Warranty Center manages the claim so you do not have to chase the brand.
Recommended with it.
Add the two most-paired items and save 10%.
Raymarine Wireless Mast Rotation Transmitter [T221] + Raymarine ST60 Wind Vane Transducer w/30M Cable [E22078] + Raymarine ST60 Long Arm Masthead Transducer w/30m Cable [E22079]


