33cm Low Noise Preamplifier with 200W T-R Relays EME2-902 820-970MHz

Wideband 33cm Low Noise Preamplifier with 200W T-R Relays EME2-902 with a wide frequency range of 820- 970 MHz and specially designed for ITU Region 2 band 902–928 MHz. EME2-902 preamplifier will meet all your needs for amplifying super-weak EME and terrestrial signals in the 902-928MHz range.  The input stage consists of a SAV-541+ pHEMT transistor, which is one of the top MMICs for preamplifiers. A low-noise PGA-103+ E-PHEMT high-dynamic-range preamplifier with excellent output return loss follows this.

An excellent input return loss of more than -10dB was achieved. The integrated Input High Pass Filter will effectively filter all lower frequencies, including HF, 6m, 2m and 70cm.

A 33cm band-pass filter is placed between the stages to prevent overloading the PGA-103+ with out-of-band signals. This combination achieves more than 33dB of gain, essential for compensating cable loss and poor noise figure characteristics of receivers. Integrated high-power 200W Transmit / receive relays with high isolation to protect the preamplifier.

 

33cm Low Noise Preamplifier with 200W T-R Relays EME2-902 Appearance:

33cm Low Noise Preamplifier with 200W T-R Relays EME2-902 characteristics:

50 MHz -65 dB
144 MHz -64 dB
222 MHz -55 dB
432 MHz -17 dB
820-970 MHz +33 dB, RLin -10dB, NF 0.3 dB
1296 MHz +9 dB
T/R Delay 25ms.
Transmit: Input RL ≤ -30dB, Insertion loss: 0.15dB
Power consumption +12 V, 250 mA
Maximum power input at SWR:
1:1 = 200 W; 1:1.5 = 125 W; 1:2 = 95 W; 1:3 = 65 W

 

33cm Low Noise Preamplifier with 200W T-R Relays EME2-902 Internal Schematic

 

33cm LNA EME2-902 Measured Gain and Return Loss on HP8753ES Network Analyzer

 

33cm LNA with 200W T/R Relays EME2-902 Transmit Path Insertion Loss and Return Loss

 

33cm Preamplifier with 200W T/R Relays EME2-902 Transmit Path SWR

 

By order 33cm LNA EME2-902 in Outdoor Housing (+12 EUR)

 

Please consider “Advanced Sequencer” to prevent burning of EME2-902
https://antennas-amplifiers.com/advanced-sequencer/

In combination with Advanced Sequencer + EME2-902, we offer free wiring of the EME2-Sequencer with 1m wires, so you will only need to extend the wires to your length.

 

For other EME2 – EME3 family look here: