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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