---
kind: "section"
citation: "47 C.F.R. § 80.753"
title: "47"
number: "80.753"
heading: "Signal strength requirements at the service area contour."
url: "https://uscodex.org/cfr/47/80.753"
---

# §80.753. Signal strength requirements at the service area contour.

- (a) The requirements for reception by a marine VHF shipboard receiver are satisfied if the field strength from the coast station, calculated in accordance with [§ 80.771](/cfr/47/80.771.md) is at least + 17 dBu above one microvolt.
- (b) **These field strengths, voltages and powers at the receiver input are equivalent—**
  - (1) −132 dBW (decibels referred to 1 watt).
  - (2) 1.8 microvolts across 50 ohms.
  - (3) + 17 dBu (decibels referred to 1 microvolt per meter).
  - (4) 7 microvolts per meter.

## Notes

### Authority

Authority: 47 U.S.C. 151-155, 301-609; 3 U.S.T. 3450, 3 U.S.T. 4726, 12 U.S.T. 2377.

### Source

Source: 51 FR 31213, Sept. 2, 1986, unless otherwise noted.