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QRO.cz RX Audite Automatic SDR Antenna Switch w/ High IP3 Internal Pre-Amp
SKU Part Number:
QRO-RX-AUDITEPRE
The RX Audite SDR Antenna Switch from QRO.cz is a powerful all-in-one solution that combines a T/R switch, dedicated receive antenna input, receive...
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£355.99
Availability: In stock

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Call 0345 2300 599The RX Audite SDR Antenna Switch from QRO.cz is a powerful all-in-one solution that combines a T/R switch, dedicated receive antenna input, receive splitter with specialized switching, and RF limiter protection — all in a compact, station-ready unit.
Designed by Jan Šustr, the RX-Audite was created to solve a common problem in modern Amateur Radio stations: how to monitor the bands with an SDR while actively transmitting — without risking damage to sensitive SDR hardware.
Whether you're running a spectrum panadapter, WebSDR, or a Skimmer Server contributing spots to the Reverse Beacon Network (RBN), the RX-Audite makes integration seamless and safe.
Key Features
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Frequency Coverage: 100 kHz – 60 MHz (160m through 6m)
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Max Transmit Power Handling: 200 Watts
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High IP3 Internal Preamplifier
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Variable gain up to 14 dB
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Ideal for insertion loss compensation
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Switchable ON for SDR RX output (even when controller is OFF)
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Built-In RF Power Limiter Protection
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100 dB Isolation During Transmit
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Dedicated INBAND RX ANT Input
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Selectable SDR Source (Main TX/RX Antenna or INBAND RX ANT)
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Internal Dummy Load Option for SDR During TX (jumper selectable)
How It Works
The RX-Audite installs directly in the feedline between your transceiver and amplifier or transmitting antenna.
When PTT is NOT Active:
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The main TX/RX antenna is diverted to the SDR RX output.
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10 mW RF limiter protection safeguards the SDR.
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The internal high IP3 preamp can be engaged for gain compensation.
When PTT is Active:
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The SDR port is bypassed with approximately 100 dB isolation.
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The transceiver operates normally into the antenna.
Controller Modes:
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Controller OFF:
Main TX/RX antenna feeds SDR RX output (protected). -
Controller ON:
Main TX/RX antenna is shared between TRX and SDR outputs. -
Front Panel Switch:
Selects SDR RX output source (Main TX/RX or INBAND RX ANT).
Advanced Multi-Layer Protection
The RX-Audite includes extensive protective circuitry to safeguard both your transceiver and SDR:
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Neon tubes
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Gas discharge tubes
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Resettable PTC fuses
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RF power limiter
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Automatic isolation during TX
If PTT is not properly asserted due to operator error or equipment failure:
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A resettable fuse protects the unit.
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The RX-Audite presents an open circuit to the transceiver.
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Your radio’s SWR protection reduces power.
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The SDR remains shielded from RF damage.
This makes it ideal for:
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Contest stations
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Multi-operator environments
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High RF density sites
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SDR panadapter installations
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Skimmer servers feeding the Reverse Beacon Network
Shipping:
We have several shipping options for our products, including next-day and Saturday/Sunday delivery for certain items. Please see these options at checkout.
Returns:
If you have any equipment that needs to be returned to Martin Lynch & Sons, please fill out the form below:
Upon receipt of goods you have 14 days to return goods however the goods must be returned in original packaging and care must have been taken with the goods you wish to return. Under distance selling regulations you are not entitled to any refund on carriage charges or modification charges made at your request. Large items cannot be returned if they have been assembled, unless faulty.
Warranty Terms and Conditions
Outside of the 14 faulty return period, returned items cannot be accepted, unless covered by manufacturer's warranty. We will repair as much as possible on site however in exceptional circumstances products may have to be returned to the manufacturer of distributor.
For repairs/replacements under manufacturer’s warranty for any item please download a ML&S return form from the link above and return to ML&S with the faulty product.
International Warranty information
Warranty service for items we sell is available in the U.K. only, unless otherwise noted. It is your responsibility to pay freight for returned items to the U.K. and back to you for desired warranty coverage. All of our NEW products come with a minimum 12 month warranty, (Yaesu & Icom 24 months), with up to 90 days on second-hand equipment. Items returned for service must state "returned goods for repair" on the return air waybill or U.K. import customs duties apply and will be added to your invoice. For more info about returning items please contact our customer help desk, [email protected]



