Antennas Magnetic

 Helmholtz Coils Overview see below

• The circular transmitting loop antenna
• 0.01 - 120 MHz
• diam. 100 mm
• turns 3
• BNC Connectors 

• Wideband Precision (9 kHz – 30 MHz): Delivers ±1 dB antenna factor stability across the full frequency range.
• Long-Life, Low?Noise Operation: Internal NiMH battery pack provides >12 hours of noise-free measurements.
• Dual-Field Capability: Supports both magnetic (–31.5 dB Ω·m) and “fictive” electric (20 dB/m) field measurements with one probe.
• Rugged, User-Friendly Design: Milled aluminum housing with LED overload indicator and versatile tripod or handle mounting.

• 8 kHz – 30 MHz Wideband: Delivers ±1 dB antenna-factor accuracy across the full spectrum.
• Dual-Mode Measurement: 20 dB/m (E-field) and –31.5 dB Ω·m (H-field) in one compact probe.
• Long-Life Battery Operation: NiMH pack provides over 12 hours of low-noise, mains-free measurements.
• Overload Protection: Built-in LED indicator alerts you at the 1 dB compression point.

• After further development of this antenna, it has been discovered a shielded antenna is needed to be useful above 5MHz
• New HFRA 5164 is 100% compliant to IEC 61000-4-39

• Magnetic, handheld coil
• 10 kHz - 3 MHz
• diam. 133 mm
• turns 9
• Immunity testing to VG 95377 Part 13

• Magnetic, handheld coil
• DC - 150 kHz
• diam. 120 mm
• turns 20
• Immunity testing to: ISO 11452-8, MIL 461E RS101, EN 55103 5.18.3.2, IEC 61000-4-39

• Magnetic, handheld coil
• DC - 200 kHz
• diam. 133 mm
• turns 36
• Immunity testing to MIL 461, EN 55103 - 2 A.2.1 b), EN 55103 - 2 A.4.1

• Magnetic, handheld coil
• DC - 50 kHz
• diam. 126 mm
• turns 225
• Immunity testing to Measuring Method SF 01 G acc. to VG 95377

• Magnetic, handheld coil
• DC - 300 kHz
• diam. 500 mm
• turns 20
• Immunity testing to EN 55103 - 2 A.3.1

• Magnetic field monitoring loop 
• 10 - 160 kHz
• Diam. 133mm
• turns 360
• Emissions testing

• Compensation Network
• For HFRA 5164
• up to 26 A/m @ 50 Watts
• 13.56 MHz