Filters for Drake Radios

Drake R4C First IF

Reference	2611.1	2612.1
Filter Fits By:	See Below	See Below
Bandwidth at 6dB	6000	8000
Mode	SSB/CW/AM	SSB/CW/AM
Center Freq. KHz	5645.0	5645.0
Performance Curve Online?	No	Yes
PRICE	$115	$115

Note:

2611.1/2612.1 (also known as GUF1) are superior replacements for original 4-pole units. Exceptional improvement. Installation requires drilling three small holes in the radio chassis.

Specifications:

1. Ultimate rejection: > 80 dB

2. Ripple: < 2 dB

3. Typical insertion loss: 250 Hz: < 9 dB; 500 Hz: < 7 dB; SSB/AM: < 6 dB

4. Zin/Zout: 500 ohms

Physical:

40 x 20 x 21 mm

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