WISCO international (Sinclair- Cavity Filters/ FR-10107)

'FR' Series Notch Filters

The notch (reject) filters provide exactly the opposite response to a bandpass filter — they "notch out" or reject an unwanted frequency, while passing all others. FR10107 As the curves illustrate, an essentially symmetrical response is obtained where a bandpass is required, both above and below the notch reject frequency. Passband widths are at least 6% of the center frequency. In order to be easily field-tuned, a rotatable loop permits variable notch depth and a venire tuning nut allows for fine frequency adjustment.

'FR' Notch Filters FR20107

Suppress sideboard noise from multicoupled transmitters on one co-located receiver frequency.
Protect multicoupled receivers further from front-end overload by the carrier of one co-located transmitter.
Generally, "Protect Many from One."

Electrical (Specifications)
		*FR-101071**	*FR-101072**	*FR-101073**

Frequency Range	MHz	30-40	40-50	66-68
Pass Band Insertion Loss		See Curves
Attenuation	dB	See Curves
Maximum Input VSWR (Note1)		1.5:1
Maximum Input Power	Watts	400
Termination		'N' Female
Temperature Range		-40°C to +60°C


		*FR-201072**	*FR-201073**	*FR-301073**

Frequency Range	MHz	132-150	138-174	406-512
Pass Band Insertion Loss		See Curves
Attenuation	dB	See Curves
Maximum Input VSWR (Note1)		1.5:1
Maximum Input Power	Watts	400		350
Termination		'N' Female
Temperature Range		-40°C to +60°C

Mechanical Specifications
		*FR-101073**	*FR-201072**	*FR-201073**

Height	in (mm)	65(1651)	35.5(902)	32.5(826)
Width	in (mm)		7.0(178)
Depth	in (mm)		7.0(178)
Weight	lb (kg)	6.0 (2.7)	11(5.0)	10(4.54)


		*FR-201072**	*FR-201073**	*FR-301073**

Height	in (mm)	36 (914)	32.5 (826)	16.6 (422)
Width	in (mm)		7.0 (178)
Depth	in (mm)		7.0 (178)
Weight	lb (kg)	11 (4.9) approx.	10 (4.54) approx.	6 (2.72) approx.