Can I use my node inside my house or vehicle?
Short Answer
Yes, with significant range reduction. Interior use is practical for connecting to a nearby outdoor repeater or for testing. It's not suitable as a repeater location.
What Signal Loss to Expect
| Location | Typical Signal Loss | Notes |
|---|---|---|
| Near a window, wood frame house | 3-6 dB | Manageable; equivalent to halving your range |
| Interior room, wood frame | 6-15 dB | Significant; may still reach nearby repeaters |
| Concrete/brick building | 10-25 dB | Severe; may not reach anything without a nearby repeater |
| Metal building, basement | 20-40+ dB | Effectively unusable for mesh |
| Vehicle (windshield path) | 3-8 dB | Acceptable for personal use; mount near windshield |
| Vehicle (metal roof path) | 20-30 dB | Much worse; magnetic mount external antenna required |
Improving Indoor Performance
- Windowsill placement — Even 6 inches from a window vs deep in a room makes a measurable difference. Place the node as close to a window facing the direction of the nearest repeater as possible.
- External antenna on a cable — Many setups run the node indoors with a short coax to a small external antenna mounted outside or near a window. 3-5 meters of low-loss coax costs under 1 dB of loss and puts the antenna in a dramatically better RF environment.
- Higher floor — Upper floors have less obstruction from building materials and more line-of-sight above street-level clutter. A third-floor window is significantly better than a ground-floor window.
Vehicle Use
A node placed on the dashboard or near the windshield can typically receive and send to nearby repeaters. For best vehicle performance:
- Mount near the windshield on the upper dash, antenna pointing up
- For dedicated vehicle installations, use a magnetic mount external antenna on the roof (NMO or SMA-compatible magnetic mounts are available for 915 MHz)
- Power from the 12V accessory port via a USB adapter
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