![Ritchie HF-743W Helmsman Compass - Flush Mount - White [HF-743W] Survival Radios 025 MHz AIS Modulation GMSK:](https://cdn.shopify.com/s/files/1/0621/9680/9967/products/10535XL.jpg?v=1642463500)
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025 MHz AIS Modulation GMSK: BT 0
Model: 3964
UPC: 632085900458
but still wants their affordability
The GNA 10 can also optionally connect to a button and LED light to allow switching between heading hold and standby**
Ritchie HF-743W Helmsman Compass - Flush Mount - White [HF-743W] Survival Radios 025 MHz AIS Modulation GMSK:HF 743W Helmsman Features: 3 3 4 (95 mm) Open Face Dial or CombiDial Easily Installed, Fits 4 (102 mm) Mounting Hole Exclusive Built in Green NiteVu Night Illumination Built in Compensators to Easily Adjust for Deviation Scientifically Matched Sapphire Jewel and Hardened Steel Pivot Dial Movement Powerful DirectiveForce Magnets for Fast Heading Lock on Movable Sun Shield 45 Degree Lubber Lines High Temperature Composite Construction for Extended