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  3. VHF 315i vs RS20S

Garmin VHF 315i vs Simrad RS20S

What VHF 315i does better (0) and where RS20S wins (1) — every spec side by side.

Garmin VHF 315i
Garmin · 2026VHF 315i
4.5Score
0 advantages≈ £610
vs
Simrad RS20S
Simrad · 2025RS20S
5.4Score
1 advantage≈ £360
Higher score
2.5Ruggedness3.6
7.3Features7.3
Dimensions

Size comparison

VHF 315iRS20S
60 × 205181167 × 16189
VHF 315iRS20SDifference
Height205 mm161 mm+44 mm
Width60 mm167 mm−107 mm
Depth181 mm89 mm+92 mm
Weight1,527 g1,180 g+347 g

Drawn to the same scale from the official dimensions (front and side).

Why is VHF 315i better than RS20S?

VHF 315i has no measurable advantages in this pair.

Why is RS20S better than VHF 315i?

  1. Weight1,527 g vs 1,180 g+29%
Specifications

Side by side

Garmin VHF 315iGarmin VHF 315i≈ £6104.5
Simrad RS20SSimrad RS20S≈ £3605.4
Radio & range
Radio standardsAmateur VHF, Marine VHFAmateur VHF, Marine VHF
Frequency ranges156 - 162 MHz156.050 - 163.275 MHz
Transmit power25 W25 W
Squelchadjustableadjustable
Power & battery
Battery voltage12 V12 V
Power sourceMains / 12 V vehicleMains / 12 V vehicle
Design & durability
Weight1,527 g1,180 g
Width60 mm167 mm
Height205 mm161 mm
Depth181 mm89 mm
Protection ratingIPX7IPX7
Water protection (IPx)IPx7IPx7
DisplayBacklit displayBacklit display
ColoursBlackBlack
Features
Channel scanYesYes
Dual watchYesYes
Emergency / SOS alarmYesYes
GPSYesYes
Connectivity
Headset / earpiece jackYesYes
Radios in the base pack11
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