Overview

DX Engineering Receiver Guard Electronic RF Limiters

DX Engineering Receiver Guard RG5000HD Electronic RF Limiters are the best choice of inline devices to protect your receiver antenna inputs.

The Receiver Guard is a receive antenna input limiter specifically designed to protect a sensitive receiver front-end against high levels of RF and potential damage. At the heart of each Receiver Guard is a highly effective electronic RF limiter covering 500 kHz to 150 MHz with an insertion loss under 0.15 dB up to 50 MHz and under 0.30 dB up to 150 MHz. The multi-stage design includes a gas discharge tube for maximum pulse energy protection. The DXE-RG5000HD rejects 10 watts of catastrophic receive antenna feedline RF while passing a maximum signal of about 87 dB over S-9, which is only 25 mw, a signal level that is well below the point of front end damage.

Receiver Guards are a must for multiple radio contesting stations and they provide low-cost front-end "insurance." Use them in these common high-RF situations:
- Receive antennas in very close proximity to transmit antennas
- Field-day operations with many transmitters in close range
- Multi-transmitter contesting sites
- Neighboring Amateur and CB operators
- Frequent high-power mobile encounters

Extensively tested and proven in real-world stations, the Receiver Guard works for all radios and offers the ultimate performance required by the upper tier of transceivers tested to have the best narrow-spaced third-order dynamic range or published RMDR (Reciprocal Mixing Dynamic Range). These are passive electronic limiters, so competitive contesting stations use separate band filters in addition to the Receiver Guard.

When there are high levels of RF on your receive antennas, the DX Engineering Receiver Guard generates far less harmonic noise than other limiters on the market, which allows your station to continue to operate safely and competitively. At normal HF signal levels the RG5000HD operates continuously with no effect on the performance of your station while providing the best possible protection for your radio.

Here are key Receiver Guard features:
* Keeps stray high levels of RF from damaging your receiver input
* Ideal for separate 160 and/or 80 meter receive systems with large pulse and RF energy capture area
* Uses state of the art components for maximum protection of receivers
* Under 6 ns response time
* Multi-Stage protection
* Very low insertion loss
* Uses BNC type connectors to avoid accidental connection to a transmit feedline
* Has been developed and tested in world-recognized multi-multi contest station K3LR

Specifications - DX Engineering Receiver Guard model DXE-RG-5000HD
- Frequency Range: 0.5 through 150 MHz
- Insertion Loss: < 0.15 dB up to 50 MHz, < 0.3 dB 50 MHz up to 150 MHz
- VSWR: < 1.2:1
- Maximum Output Level at 10 W input: +14 dBm (0.025 W)
- Maximum Power Handling: 10 W CCS (Continuous Commercial Service)
- Device Impedance: 50 to 75 ohms, unbalanced
- Connectors, Input and Output: BNC female

Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information.

What happens if the receive antenna is extremely close to the transmit antenna, or there is an antenna support or other system failure that causes a high RF level to enter the receive antenna input? A DX Engineering Receiver Guard can save the day! Order yours now.

Documentation