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International Radio :: Products by radio :: Drake :: R-4C

Bandwidth (Hz) 80006000600021001800500250125
ModeGUF-1GUF-1AMSSBSSBCWCWCW
1st IF #2612.1 #2611.1
2nd IF #2611.2 #2609.2 #2608.2 #2603.2 #2601.2 #2600.2

#2611.1/#2612.1 (also known as GUF-1) are superior replacements for original 4-pole units. Exceptional improvement. Installation requires drilling three small holes in the radio chassis -- instructions are provided.

The 2nd IF fitlers are designed to be installed in the accessory crystal filter slots. Installation is as described in the Drake Model R-4C Receiver Instruction Manual.

R-4C

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#2600.2
125 Hz 5695.0 kHz CW 8-pole...
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#2601.2
250 Hz 5695.0 kHz CW 8-pole...
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#2603.2
500 Hz 5695.0 kHz CW 8-pole...
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#2608.2
1800 Hz 5695.0 kHz SSB 8-pole...
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#2609.2
2100 Hz 5695.0 kHz SSB 8-pole...
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#2611.1
6000 Hz 5645.0 kHz GUF-1...
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#2611.2
6000 Hz 5645.0 kHz AM 8-pole...
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#2612.1
8000 Hz 5645.0 kHz GUF-1...
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