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  3. MR HH500 vs RTM 100

Cobra MR HH500 vs Stabo RTM 100

What MR HH500 does better (2) and where RTM 100 wins (1) — every spec side by side.

Cobra MR HH500
Cobra · 2025MR HH500
4.0Score
2 advantages≈ £140
Higher score
vs
Stabo RTM 100
Stabo · 2025RTM 100
3.8Score
1 advantage≈ £75
3.6Battery2.2
6.7Ruggedness8.2
Dimensions

Size comparison

MR HH500RTM 100
121 × 675363 × 11935
MR HH500RTM 100Difference
Height67 mm119 mm−52 mm
Width121 mm63 mm+58 mm
Depth53 mm35 mm+18 mm
Weight262 g136 g+126 g

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

Why is MR HH500 better than RTM 100?

  1. Transmit power6 W vs 3 W2×
  2. Battery capacity1,000 mAh vs 850 mAh+18%

Why is RTM 100 better than MR HH500?

  1. Weight262 g vs 136 g+93%
Specifications

Side by side

Cobra MR HH500Cobra MR HH500≈ £1404.0
Stabo RTM 100Stabo RTM 100≈ £753.8
Radio & range
Radio standardsAmateur VHF, Marine VHFAmateur VHF, Marine VHF
Frequency ranges156.050 - 163.275 MHz156 - 163.425 MHz
Transmit power6 W3 W
Squelchadjustableadjustable
Call tones10—
Power & battery
Battery capacity1,000 mAh850 mAh
Battery voltage7.4 V6 V
Power sourceRechargeable pack, AA / AAA batteries, Car socketAA / AAA batteries
Runs on AA/AAA batteries tooYes—
USB-C chargingNo—
Battery level indicatorYesYes
Design & durability
Weight262 g136 g
Width121 mm63 mm
Height67 mm119 mm
Depth53 mm35 mm
Protection ratingIPX7IPX7
Water protection (IPx)IPx7IPx7
FloatsYes—
DisplayBacklit displayBacklit display
ColoursBlackBlack
Features
VOX (hands-free)Yes—
Channel scanYesYes
Dual watch—Yes
Emergency / SOS alarmYesYes
Key lockYesYes
Roger beepYes—
Monitor button—Yes
Connectivity
Headset / earpiece jackYes—
Connectors3,5mm Klinke—
BluetoothYes—
Radios in the base pack11
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