SINCLAIR Q-322D Uhf Repeater Duplexer

( Brand: Sinclair ), ( Manufacturer Part Number: Q-322D ), ( Part Type: Repeater ), ( Frequency Range: 400-500 Mhz ), ( Band Type: Mono Band ), ( Band: Uhf )

Review SINCLAIR Uhf Repeater Duplexer

The Sinclair Q-322D UHF Repeater Duplexer is a high-performance component designed for use in sophisticated two-way radio communication systems, particularly in UHF frequency bands. This duplexer is specifically engineered to separate transmit and receive signals in a repeater setup, ensuring clear and efficient communication.

The Q-322D is a bandpass filter array that consists of four individually tuned cavities. Each cavity is meticulously designed to pass a specific frequency range while suppressing others, thus isolating the transmit and receive frequencies effectively. This results in minimal cross-talk and improved system stability, which are crucial for reliable radio communication.

The Sinclair Q-322D UHF Repeater Duplexer is robust and compact, making it ideal for both mobile and stationary applications. It is designed to withstand harsh environmental conditions, including temperature variations and vibration. The duplexer is also easy to install, thanks to its standard SMA connectors.

In terms of frequency coverage, the Q-322D operates in the UHF band, specifically from 400 MHz to 520 MHz. This makes it suitable for a wide range of UHF communication systems. The duplexer also has a high power handling capacity, capable of handling up to 100 watts of RF power, ensuring reliable operation even under heavy usage.

In summary, the Sinclair Q-322D UHF Repeater Duplexer is a versatile and high-performance component for UHF radio communication systems. Its design ensures minimal cross-talk, high isolation, and robustness, making it an excellent choice for both amateur and professional use.

The Sinclair Q-322D UHF Repeater Duplexer is a component used in UHF radio repeaters. Here are some pros and cons to consider before making a purchase:

1. High Quality: Sinclair is a well-recognized brand in the radio communications industry, known for producing high-quality products. The Q-322D is no exception.

2. Wide Frequency Range: This duplexer supports a wide UHF frequency range, making it suitable for various applications.

3. Duplexer Design: The duplexer design helps to minimize interference between the input and output frequencies, ensuring optimal performance for your repeater system.

4. Efficient: The Q-322D is designed to be efficient, reducing power loss and extending the range of your repeater.

1. Price: As with many high-quality products, the Sinclair Q-322D may be more expensive compared to other duplexers on the market.

2. Complex Installation: Installing a duplexer like the Q-322D requires a certain level of technical knowledge. If you're new to setting up repeater systems, you might find the installation process challenging.

3. Limited Bandwidth: While the Q-322D supports a wide frequency range, it may not provide the necessary bandwidth for high-data-rate applications or heavily populated repeater systems.

The Sinclair Q-322D UHF Repeater Duplexer is a high-quality product suitable for various UHF repeater applications. Its wide frequency range and efficient design make it an attractive choice for many users. However, its price and complex installation process are potential drawbacks.

If you're a seasoned radio communications enthusiast or professional and are looking for a high-quality duplexer for your UHF repeater system, the Sinclair Q-322D could be an excellent choice. On the other hand, if you're new to setting up repeater systems or require a duplexer for high-data-rate applications, you might want to consider cheaper options with narrower frequency ranges or explore alternative brands. Always ensure you have the necessary technical knowledge and resources to install and configure the duplexer effectively.

Details:

Tunes perfectly. Duplexer currently tuned to 444.4 / 449.4. Took my 60w UHF repeater down.

part #: q322d prices

• $2399.00-$2500.00

specifications hamamateuradio:

• brand: Sinclair
• mpn: Q-322d
• part type: Repeater
• frequency range: 400-500 Mhz
• band type: Mono Band
• band: Uhf

general hamamateuradio:

• Radio Communication > Ham, Amateur Radio > Ham Radio Transceivers
• condition: Used

shipping hamamateuradio:

• cost: $0.00
• type: Calculated
• transit: 5-11 Days
• class: Expedited
• service: USPS Priority Mail
• carrier: USPS

returns hamamateuradio:

• policy: No Returns

seller hamamateuradio:

• city: South Amboy, New Jersey
• rating: 100.0%
• # reviews: 1082

payments hamamateuradio:

• other
• wallet: Apple-pay
• credit card: Visa

offer hamamateuradio:

• sold: 0
• quantity: 1
• availability: In Stock
• started: July 3, 2025
• options: Ship-to-home

Sinclair Q-322D Is Similar To:

• Q-202gc Quantar Maggorie High Pro-e Maggiore Repeater Vhf Analog With Sinclair Vhf Duplexer (37.5% similar) Maggie hi pro e repeater range 144MHZ to 174MHZ 25 watt repeater is on pair with cat 300 controller repeater has a 420 duplex link boards included with pl boards this is a turn key repeater working ready now just put in your call with Sinclair 4 cavity duplexer 1MHZ to 10MHZ spacing 90 db notch ...(February 19th, 2016)
• 148-174mhz Rdd4684a Motorola Sinclair R216cr Vhf Notch Repeater Duplexer (56.9% similar) Motorola RDD4684A vhf duplexer. Currently tuned for not able to find a lot of info on the internet for these. 755 and USPS priority mail. Manufactured by Sinclair R216CR was pulled from a weather sealed 100 watt senator based repeater...(October 14th, 2015)
• Q-202 Sinclair Used Rf Vhf Base Duplexer Cavity Mhz Rack Mount (50.5% similar) Buyer pays actual shipping charges only, via us postal service, ups or fed-ex any other shipper of your choice. Shipping: the shipping calculator is not always correct. There are no dings cracks or damage to the piece. I work a regular job that requires odd hours, shifting schedules and travel. ...(July 9th, 2018)
• Q202gr-1 Sinclair Vhf Mhz Ham Repeater Duplexer Free Tuning (60.4% similar) This product carries a 2-YEAR warranty active from the date received by customer. Free tuning. For sale is a Sinclair Q202GR-1 vhf mhz 2m ham repeater duplexer 4 cavity, rack mount. Please do your homework before you bid...(July 19th, 2018)
• Q2220 Sinclair Duplexer Vhf Mhz (50% similar) It can be returned to operate on other frequencies. It is currently tuned to the frequencies of this duplexer came from a decommissioned repeater site. It has not been tested and so is being sold as. There is no physical damage and I am unaware of any problems with it...(October 25th, 2018)
• 132-148mhz Q202-cg-1 Sinclair Duplexer Q202gc-1 Station Vhf Q-circuit 4 Cavity Nib (28.6% similar) ...(July 4th, 2016)
• 138-150mhz Q202gc1 Q202-gc-1 Sinclair Duplexer Q202gc-1 Station Vhf Q-circuit 4 Cavity Nib (26.8% similar) ...(July 11th, 2016)
• Q3220e Sinclair Uhf Ham Radio 350 Watt Bp Br Duplexer (57.8% similar) In like new condition. So that is why it will cost so much to ship. Sinclair Q3220E uhf band pass band reject duplexer. 8DB insertion loss at 5 mhz channel separation isolation 75DB rejection of receiver frequency this unit is not the small one and must be packaged properly...(May 29th, 2016)
• Q-202gc Evx-r70 Vertex Standerd Repeater Vhf Analog With Sinclair Vhf Duplexer (40% similar) Ex R70 vertex standers repeater range 144MHZ to 174MHZ 35 watt this is a vhf digital row way radio system digital analog wide narrow this is a turn key repeater working ready now just put in your call with Sinclair 4 cavity duplexer 600KHZ to 10MHZ spacing 90 db notch duplexer model is q 202GC with ...(September 25th, 2016)
• Sinclair Rm305-204s1b Uhf Receiver Multicoupler Rm305 (60% similar) Multiple available. Good used condition...(November 14th, 2024)
• Sinclair Mr356n-2 Mobile Duplexer 440-480 Uhf F11 (44.2% similar) Part #: Sinclair MR356N-2 for sale...(March 13th, 2025)