Diamond QFH DP-KE137 Antenna with 137.5 MHz Preamp (Used Model)
137MHz Satellite Antenna and filtered pre-amplifier
Diamond DP-KE137 antenna complete with Uputronics HAB-FLT1375 Filtered Pre-amplifier and supporting connecting leads for the antenna.:
A Receiving Antenna for Weather Satellite NOAA & ACARS along with a matching Filtered preamplifier for NOAA and APT
Mast Diameter accepted: 25-62mm
HAB-FLT1375 Pre-amp details
This is a cost effective SAW based unit which give excellent performance gains.
Compatible with most USB SDR Dongles such as the RTL USB, Airspy, Fun Cube. You can power them from either bias tee (This item is 100% compatible with the Airspy bias-tee) or a simple USB mini cable (Supplied). A regulator is fitted as standard which means the bias-tee voltage input range is 5V to 26V. USB input is 5V.
This unit is a small filter and preamp designed to go between a software defined radio receiver and an antenna. Using a SAW bandpass filter and a low noise amplifier (LNA), it stops out of band intermodulation while providing additional gain for increased sensitivity. The LNA is before the SAW filter. This particular model is tuned for use with 137.5MHz. To block strong commercial FM signals a high pass filter is installed before the LNA.
The LNA used is a Mini Circuits PSA4-5043+ which provides at least 21dB of gain @ 137.5MHz. To stop out of band intermodulation an 137.5MHz SAW bandpass filter, which has a 7.6MHz bandwidth is also present. The insertion loss of this filter is approximately 1.4dB.
Connectors are SMA female both sides along with the appropriate adaptor cable for the antenna.
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