Kyoritsu

Medium wave automatic field strength meter 　KFI-3301

KFI-3301 is a field strength meter for medium frequency range from 500kHz to 5MHz. Electronic tuner with frequency synthesizer method is adopted, enabling its CPU control to measure automatically. Precise adjustment will be available for manual measurement with built-in rotary encoder. Measurement results are automatically calculated and printed out. This equipment is useful for fading measurement or continuous monitoring of radio wave.

Some kind of preliminary setting functions and mounted GP-IB interface organize automatic measurement system which will be adopted to many purposes. Software is available upon request. Standard power supply is dry battery running. AC adapter and battery pack (rechargeable battery and charger) are optionally available.

Features

●	Automatic level calibrating function is built-in and enabling accurate and speedy automatic measurements.
●	Some kind of preliminary setting functions enables to adopt to the measurements for many purposes.
●	Measured results are automatically calculated and displayed in LCD, and printed out.
●	Mounted GP-IB interface allows to organize automatic measuring system.
●	Using the accessory medium wave antenna KBA-3301, antenna coefficient will be automatically calculated and field strength value will be directly read.
●	Arbitrary frequencies and measuring conditions are memorized up to 100 patterns.
●	Frequency can be set by 2 setting methods : rotary encoder and key board.
●	Sweeping can be available by 2 methods : scan and memory scan.
●	Grouped memory sweeping and periodical memory sweeping is available.
●	Only the frequencies and values that are higher than setted level can be printed out. (Under level setting)
●	Compact and light weighed body is convenient for portable measurements.

Specifications

Frequency range	500kHz ～ 5MHz (100Hz step)
Measurement range	Input terminal voltage : -10 ～ 100dBμV (mean value)
	(50Ω terminating, 1μV=0dB, C/N=6dB, bandwidth 3kHz)
	Field strength : 40 ～ 130 dBμV/m
	(1μV/m=0dB, C/N=6dB, bandwidth 3kHz)
	Using antenna model KBA-3301
Measurement accuracy	Input terminal voltage : ±1dB or less
	Field strength : ±1dB (when calibrated yearly)
Setting item	Receiving frequency : 100Hz step, 5 digits
Attenuator	50dB (10dB step), auto ranging
Selectivity	-6dB bandwidth : 3kHz ±20%, 10kHz ±5kHz
Display of measured level	Continuous display : Output indicator -10 ～ 50dB
	Digital indication : 0.1dB step, 4 digits
Time constant of detector	Mean value detector : Charge & discharge time, 20μs or less
Output	Output for recorder : Approximately 1V in DC
	Low frequency output : Built-in speaker (AM detection)
	Printed out item : Each setting item, level, frequency
Power supply	Dry batteries (size C x 10)
External size, Weight	285(W) x 149(H) x 260(D) mm, 6 kg
Accessory	KBA3301 antenna for wave field strength 1 set
Option	AC power supply KPS-001B
	GP-IB connection cable (2m)
	Battery (6.5Ah, with charger)

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