GQ EMF-390 vs ERICKHILL RT-100S — Which Should You Buy?

Side-by-side comparison of GQ EMF-390 and ERICKHILL RT-100S. We compare specs, performance, and value to help you decide.

Updated 2026-03-09 Independently reviewed
GQ EMF-390

GQ EMF-390

9/10
$120 /one-time
VS
ERICKHILL RT-100S

ERICKHILL RT-100S

8/10
$45 /one-time

Feature Comparison

Feature GQ EMF-390 ERICKHILL RT-100S
Field Types RF, Magnetic, Electric RF, Magnetic, Electric
RF Range 10 MHz – 10 GHz 50 MHz – 3.5 GHz
Data Logging Yes —
Spectrum Graph Real-time —
Display LCD LCD
Battery Rechargeable 9V
Weight 220g 170g
Price — Budget

GQ EMF-390

Pros

  • ✓Data logging
  • ✓RF spectrum graphs
  • ✓10 MHz–10 GHz range
  • ✓Rechargeable
  • ✓Multi-field
  • ✓Great value
  • ✓LCD display

Cons

  • ✗More complex interface
  • ✗Bulkier than TF2

ERICKHILL RT-100S

Pros

  • ✓3-in-1 at budget price
  • ✓50 MHz–3.5 GHz
  • ✓LCD display
  • ✓Simple operation
  • ✓Good for beginners
  • ✓Lightweight
  • ✓Battery included

Cons

  • ✗Lower accuracy
  • ✗No data logging
  • ✗Basic build

Our Verdict

GQ EMF-390

Best value EMF meter. Logging and spectrum analysis at a fraction of professional meter cost.

Price Drop Alert — View Deal Now

ERICKHILL RT-100S

Best budget EMF meter. Get started with EMF detection without breaking the bank.

Special Deal Available — See Offer

Our Methodology

We test each meter against known sources and compare accuracy. No manufacturer has editorial influence.

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