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The WaveNode WN-2.QRP is a low-power HF RF sensor for use with compatible WaveNode monitoring systems and the Sierra Radio Systems SIR-335 Two Port RF Watt Meter Control Module.
Covering 3.5-60MHz with a power range of 0-60W, this sensor is ideal for QRP and lower-power HF stations where forward power, reflected power, and SWR monitoring are required. It is a sensible choice for portable, low-power, and modest fixed-station installations where the higher-power WN-2.HF sensor is not required.
The WN-2.QRP is fitted with 2 x PL female connectors, making it suitable for installation in-line with standard HF station coaxial cabling using PL-259 terminated leads.
Key Features
- QRP / low-power HF RF sensor
- Suitable for use with the Sierra Radio Systems SIR-335 watt meter control module
- Covers 3.5-60MHz
- Power range of 0-60W
- 50 ohm impedance
- 2 x PL female connectors
- Suitable for HF and 6m low-power station monitoring
- Allows forward power, reflected power, and SWR monitoring when used with compatible control hardware
- Good choice for QRP, portable, and lower-power HF installations
- Passive RF sensor with no separate power supply required
Typical Uses
- QRP HF station power monitoring
- Low-power HF and 6m monitoring
- Portable station RF monitoring
- Use with the Sierra SIR-335 watt meter control module
- Monitoring low-power transmitter output
- Monitoring antenna system performance
- Forward and reflected power measurement
- SWR monitoring in station automation systems
- Remote low-power station monitoring where suitable
System Notes
The WN-2.QRP is an RF sensor and must be connected to compatible monitoring hardware to display or process power readings.
When used with the SIR-335 Two Port RF Watt Meter Control Module, the sensor provides the RF measurement point while the SIR-335 integrates the readings into the Sierra Station Controller system.
For higher-power HF installations, consider the WN-2.HF sensor instead. For VHF/UHF installations, consider the WN-2.UHF sensor.
Specifications
| Specification | Details |
|---|---|
| Brand | WaveNode |
| Model | WN-2.QRP |
| Product type | QRP RF power sensor |
| Sensor type | LP-1 style low-power HF sensor |
| Frequency range | 3.5-60MHz |
| Power range | 0-60W |
| Impedance | 50 ohms |
| Connector type | 2 x PL female |
| Weight | Approx. 205g |
| Power requirement | No separate PSU required for the sensor itself |
| Typical compatible module | Sierra Radio Systems SIR-335 |
Important Note
This listing is for the WaveNode WN-2.QRP QRP Sensor only.
Sierra SIR-335 watt meter control module, WaveNode meter, coaxial cables, radios, antennas, tuners, and other accessories are not included unless stated otherwise.
This sensor does not provide a display or monitoring interface by itself. It must be used with compatible WaveNode or Sierra monitoring hardware.
Please ensure the selected sensor is suitable for your frequency range, connector type, and maximum station power before installation.
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]