Why Certain Products Require RX Frequencies ?

Posted on 16 October 2024

Certain RF products, such as cavities, duplexers, power splitters, and filters, rely on specific RX frequencies to ensure optimal performance. Understanding the factory input criteria for each product—whether it’s for transmitter or receiver use—is crucial to ensuring proper function and integration. For example, duplexers allow simultaneous transmission and reception on a common antenna, while intermodulation suppression panels prevent unwanted interference. Explore our full article to dive deeper into these critical details and learn more about product-specific requirements to optimize your RF system.

Factory Input Criteria:

Cavities, Duplexers, Power Splitter, Isolators, Reciever Distribution Panel, Transmit Low Pass Filters &. Inter-modulation Suppression Panels.

TPRC Pass-Reject Cavity Typical -Tx side.

Factory Requirements: Pass frequency and Reject frequency
Notes: Model number always applies to the pass frequency.
Examples: Pass 87.355 MHz Reject 88.980 = TPRC-0705-1, 66 MHz to 88 MHz
Pass 107.755 MHz Reject 108.050= TPRC-1005-1, 88 MHz to 108 MHz
Confirm that the reject frequency is not too distant.

TWPC Pass Cavity Typical -Tx side, unless specified Rx.

Factory Requirements: Enter center frequency in the Tx cell unless the customer has specified Rx. Enter CNTR in the corresponding channel box.
Notes: If the buyer does not specify Tx or RX default to Tx.
If frequency falls in the FM band clarify the band width, with the buyer.
The default is 75 KHz, only note l00KHz spacing if the customer requests, l00KHz. All single cavities have a -1dB insertion loss default unless otherwise specified, if this occurs make the notation on a model number line.

TPRD Pass-Reject Duplexer Allows simultaneous operation of a transmitter and receiver into a common antenna.

Factory Requirements: Transmit frequency and Reject frequency.

TPCD Pass Cavity Duplexer Allows simultaneous operation of a transmitter and receiver into a common antenna.

Factory Requirements: Transmit and receive frequency, verify TX-RX split meets requirements.

TTPD Pass-Reject Duplexer Designed for 700 and 800 MHz trunking frequencies with a 5 MHz bandpass window and a notch.

Factory Requirements: Transmit frequency and Receive frequency.
Transmit 5 MHz bandpass, Receive 5 MHz bandpass.

TMND Compact Mobile Duplexer Designed primarily for vehicle installation. Factory Requirements: Transmit frequency and Receive frequency.

TWNC Notch Cavity Designed to block specified frequency.

Factory Requirements: Determine whether used in Tx or Rx enter notch frequency in corresponding Tx or Rx cell.

TPCP Receiver Preselector Typical Rx side.
Bandpass cavities reside between the multicoupler and antenna they provide maximum receiver desense protection.

Factory Requirements: High Rx frequency and Low Rx frequency in Rx cell one above the other.

PS-xxxx Multi-port power splitter Typical Rx side.

Factory Requirements: Requested operating Rx range input in Rx cell.

TWRx-xxx-xxx Multi-channel receiver distribution panel w/amplifier.

Factory Requirements: Call out high Rx frequency and low Rx frequency in Rx cell one above the other. Low on top, high underneath. Specify the amount of gain on the product part number line.

TLF-xxx Transmitter low and high pass filter. Typical Tx side.

Factory Requirements: Call out frequency range in Tx cell one above the other. Low on top, high underneath.

TS150PB1 Intermod suppression panels. Dual isolator with filter and 50 watt load.

Factory Requirements: Place center frequency in TX cell.
If “High Power” call out operating frequency because this unit is not externally adjustable. A=single, B=dual, 1=50 Watt load, 2=100 Watt load.

T-1530 VHF Single Isolator

Factory Requirements: Call out center frequency in TX cell.

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