160MHz 100W SDR TR Switch Antenna Sharer Box Kit | APWIKOGER

APWIKOGER 160MHz 100W SDR Transceiver TR Switch Antenna Sharer Box Kit

Take your amateur radio and SDR (Software Defined Radio) setup to the next level with the APWIKOGER 160MHz 100W TR Switch Antenna Sharer Box. Designed for hobbyists and enthusiasts who need seamless, reliable switching between transmit and receive modes, this compact device protects your receiver while maintaining excellent signal integrity across a wide frequency range.

With automatic RF-sensing switching, a fast opening time, and robust gas discharge protection, this TR switch box is an essential accessory for any serious SDR or HF/VHF transceiver station. Made in Mainland China.

Key Features

• Wide Frequency Range: DC to 160MHz — compatible with HF, VHF, and SDR applications
• High Power Handling: Supports up to 100W maximum transmitting power
• Auto RF Sensing: RF induction threshold <10mW (1.8MHz–30MHz), auto-switching with no manual intervention required
• Fast Switching: Opening time <20ms / Release time <190ms for smooth TX/RX transitions
• Low Insertion Loss: <0.3dB @ 144MHz (typical 0.2dB) — minimal signal degradation
• Strong RX Isolation: >38dB @ 144MHz (typical 40dB) — protects your SDR or receiver front-end
• Gas Discharge Protection: Built-in surge protection for receiver safety
• Standard Impedance: 50Ω for compatibility with most amateur radio and SDR equipment
• Compact & Solid Build: Sturdy metalwork construction in a portable form factor

Specifications

What's in the Box

• 1× SDR Transceiver TR Switch Box
• 1× 3.6cm SMA to SMA Connecting Line
• 1× PTT Control Line
• 1× Power Cord

Why Choose This TR Switch?

Whether you're running an SDR dongle alongside a 100W transceiver, building a contest-grade station, or experimenting with HF monitoring, this antenna sharer TR switch box ensures your sensitive receive front-end is automatically isolated during transmit. The gas discharge tube protection adds an extra layer of defense, making it a smart upgrade for any shared-antenna radio setup.

For more on amateur radio operating practices and equipment standards, visit the FCC or refer to NIST's RF measurement resources.

Note: Due to differences in monitor settings and lighting, the actual color of the item may vary slightly from images shown. Please allow 1–2cm measuring deviation due to manual measurement.

Frequently Asked Questions

Q: What is a TR switch and why do I need one for my SDR setup?

A: A TR (Transmit/Receive) switch automatically routes your antenna signal to your transmitter during TX and to your receiver during RX. This is essential when sharing a single antenna between an SDR receiver and a transceiver — it protects the sensitive SDR front-end from being damaged by high transmit power, while maintaining excellent receive performance.

Q: Does this TR switch require manual switching or is it automatic?

A: This TR switch box features automatic RF sensing. It detects RF power above its threshold (<10mW from 1.8MHz–30MHz) and switches automatically within 20ms — no manual intervention or button press required. It also supports a PTT control line for even faster, manually triggered switching.

Q: Is this TR switch compatible with my HF transceiver running 100W?

A: Yes. This device supports a maximum transmitting power of 100W and covers DC to 160MHz, making it compatible with most HF (1.8–30MHz) and VHF (up to 160MHz) transceivers running at or below 100W output. It uses a standard 50Ω impedance and SMA connectors, widely used across amateur radio and SDR equipment.

Q: What power supply does the TR switch box require?

A: The unit requires a 13.8V DC power supply at 200mA. This is the standard voltage used by most amateur radio equipment, so it can conveniently share a supply with your transceiver or be powered from a dedicated 13.8V bench supply.