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Chesapeake inst. Corp

Chesapeake Inst. Corp 4547-4 Bandpass Filter 1.2-2.4 KHz FR4PX22YY Military

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SKU:
47954
Condition:
Used
Availability:
Usually ships within 1-2 business days.
Weight:
1.00 LBS
Shipping:
Calculated at Checkout
  • Chesapeake Inst. Corp 4547-4 bandpass filter — label side showing part number, FC range 1.2–2.4 KHz, and MFR reference
  • Chesapeake Inst. Corp 4547-4 bandpass filter — side panel with COM and OUT threaded stud terminals
  • Chesapeake Inst. Corp 4547-4 bandpass filter — close-up of label showing PT. NO. 4547-4, FR4PX22YY, and frequency specs
  • Chesapeake Inst. Corp 4547-4 bandpass filter — terminal face showing COM, OUT, and IN stud connections with mounting bolt holes
  • Chesapeake Inst. Corp 4547-4 bandpass filter — opposite side panel showing two threaded stud terminals
$120.00
Was: $250.00
Current Stock: 1

Sold Out

Description

Chesapeake Inst. Corp 4547-4 Bandpass Filter 1.2-2.4 KHz FR4PX22YY Military

Passive bandpass filter designed to isolate and pass signals within a 1.2–2.4 kHz frequency range. Housed in an enclosed metal module with threaded stud terminals for direct circuit integration.

Specifications & What's Included

  • Manufacturer: Chesapeake Instrument Corporation
  • Model: 4547-4 / FR4PX22YY
  • Military Reference: 56662-SA-8684-373
  • Filter Type: Passive Bandpass
  • Frequency Range: 1.2–2.4 kHz
  • Connectors: Threaded stud terminals (COM, IN, OUT)
  • Unit only; no accessories included

Applications

Bandpass filters in this frequency range were commonly used in military communications, sonar systems, and audio signal conditioning. The low-frequency passband suits underwater acoustic applications, subsonic monitoring, and specialized telecom networks. Typical deployment in fire control systems, sensor processing equipment, and defense electronics where frequency selectivity in the very-low-frequency band is required.

Condition: Used
This Chesapeake Instrument Corp 4547-4 bandpass filter is in used condition. The metal enclosure shows general surface wear consistent with age and prior service use, including scuffing, light scratches, and minor oxidation on the housing — typical for surplus military-specification components of this era. The label is present and legible. The threaded stud terminals (COM, IN, OUT) appear intact. This unit has not been powered or bench-tested at our facility. It is being sold as inspected surplus. Please view our photo set and contact us if you have any questions.
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Warranty Information

We stand behind every item we sell with a 30-day money-back guarantee. If your item arrives not as described, you may return it within 30 days for a full refund. Please inspect your purchase upon arrival and contact us with any questions.
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Additional Information

Brand:
Chesapeake Instrument Corporation
Model:
4547-4
MPN:
4547-4
Secondary Model:
FR4PX22YY
Military Reference Number:
56662-SA-8684-373
Type:
Bandpass Filter
SKU:
47954
Frequency Range (FC):
1.2 – 2.4 KHz
F3 (Lower Cutoff):
1.2 KHz
F4 (Upper Cutoff):
2.4 KHz
Filter Class:
Passive Bandpass
Connector Type:
Threaded stud terminals (COM, IN, OUT)
Form Factor:
Enclosed Metal Module
Condition:
Used – Inspected
Seller Notes:
Unit only; no additional accessories included.
Country/Region of Manufacture:
United States
Condition Notes:
Chesapeake Inst. Corp 4547-4 bandpass filter in used condition. Enclosure shows surface wear, scuffing, and minor oxidation typical of surplus military components. Label intact and legible. Not bench-tested at our facility. Sold as inspected surplus.
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