Premium Ceramic Intermediate Frequency Filter for Motorola Radios
This is a Motorola-branded six-element ceramic intermediate frequency (IF) filter used in various Motorola two-way radio models. The component is marked "D8" with a circled "M" symbol and "Q" on its black plastic housing, indicating it's likely manufactured by a specialist RF filter manufacturer and specified by Motorola for their radio designs. This through-hole mount filter features three pins for PCB installation and provides precise frequency filtering essential for the radio's receiver performance. The internal ceramic resonators are visible through the bottom opening, encapsulated in protective material to maintain frequency stability.
Key Features
- Motorola-specified 6-element ceramic IF filter
- Compact black plastic housing with three through-hole mounting pins
- Component markings: "D8", circled "M", and "Q" designations
- Encapsulated ceramic elements for frequency stability and mechanical protection
- Through-hole design for traditional PCB assembly
- Sharp selectivity characteristics for adjacent channel rejection
- Factory-tuned to precise intermediate frequency specifications
Compatible Models
- Various Motorola two-way radios (consult service manual or parts diagram for specific model compatibility)
What's Included
- One (1) 6-Element Ceramic IF Filter
Application & Installation
This ceramic IF filter is a precision RF component that requires professional installation by a qualified radio technician. The filter must be soldered into the radio's circuit board in the intermediate frequency section of the receiver chain, typically between mixer and detector stages. Replacement is necessary when the filter fails due to physical damage, thermal stress, or electrical breakdown, resulting in symptoms such as poor receiver sensitivity, inability to reject adjacent channels, distorted audio, excessive background noise, or complete loss of receive function. Installation requires proper through-hole soldering techniques with attention to heat management, as excessive temperature can damage the internal ceramic elements. The three-pin configuration provides input, output, and ground connections that must be correctly oriented according to the circuit board layout. After installation, receiver alignment procedures may be required to optimize performance, necessitating specialized RF test equipment including signal generators and spectrum analyzers. This component plays a critical role in determining the radio's selectivity and sensitivity characteristics, making proper installation essential for achieving design specifications.
Manufacturer Part Number: 9180097D06
Component Markings: D8, Ⓜ, Q
Filter Type: 6-Element Ceramic IF Filter
