1-600MHz RF Signal Power Meter Logarithmic Detector -74dBm to 18dBm | High Precision Radio Frequency Detection Tool for Ham Radio, Wireless Testing & Signal Analysis
$9.36
$12.48
Safe 25%
1-600MHz RF Signal Power Meter Logarithmic Detector -74dBm to 18dBm | High Precision Radio Frequency Detection Tool for Ham Radio, Wireless Testing & Signal Analysis
$9.36
$12.48
25% Off
Delivery & Return: Free shipping on all orders over $50
Estimated Delivery: 10-15 days international
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SKU: 57818899
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Description
The detector is is used for RF signal power detection of frequency range between 1MHZ and 600MHZ. It can detect a rf signal of power from -74dBm to 18dBm, and convert the RF signal into a DC voltage output. The higher radio frequency signal range or power is, the higher output voltage will be; output voltage is proportional to logarithm of input signal range. Widely used for RF signal detection, signal power measurement, environment field strength detection, can also be used as a part of automatic gain control and automatic level control. It can be made into 1mw ~ 1kw RF power meter after appropriate transformation. Specifications: Working Frequency: 1MHZ---600MHZ Measuring Power: -74dBm to +18dBm Output Voltage: 0---2.5V Detection Slope: 25mV/dBm (typical) Input Impedance: 50ohm Power Supply Voltage: 6-15V RF Input Connector: SMA-female OUT: Detection Output VCC: DC Power Supply Package Includes: 1 x RF Logarithmic Detector
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Reviews
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Verified Buyer
5
Needed to trace down some RFI issues I'm having (Solar PV Inverter is a non-trivial source on EMI...), so I cobbled this together in a few hours. I did not have a shielded housing, but the plastic housing I used (see photo) worked in the sense that the PCB itself did not seem to pick up any RF signal other than through the input connector. With no external signals, there was an offset on the output of about 170 mV (which would translate to +7dB). The offset is typical of log amps and for this device corresponds to an intercept of -82 dBm. The stated range of -74 dBm to +18 dBm gives a dynamic range of 92 dBm; the stated output range of 0 to 2.5v (~100 dB at 25 mV/dB) corresponds well enough to that (the description says 25mV/dBm, while the circuit board says 25mV/dB). With a little extra circuitry, the offset could be tuned out.Inside my housing is a 9v battery powering the unit. The output is connected to an RCA phono jack, which I then connected through a Harbor Freight DVM. For the cost and effort, this PCB is a quick-and-dirty way to make an el-cheapo signal strength meter. With a few input filters, its usefulness will improve.
