A Complete Solution for 144-148 MHz 1500W Transmit-Receive 2m Competition and Moonbounce System with Low Loss Receive Band Pass Filter and Preamplifier EME2-144
QRO – Extreme power on transmit and low noise on receive with integrated Input band-pass filter. Has just two connectors so you don’t need split RX.
QRO made on low dielectric loss RT/duroid® 5880 Laminates (not on FR4 Important!).
EME2-144 device consists of three components:
3. Double High Power Relays with 16A contacts.
Receive gain:
| Frequency: | Gain: |
| 1.82 MHz | < – 60 dB |
| 3.80 MHz | < – 60 dB |
| 7.1 MHz | < – 60 dB |
| 14 MHz | < – 60 dB |
| 28 MHz | < – 60 dB |
| 50 MHz | < – 37 dB |
| 70 MHz | < – 37 dB |
| 88 MHz | < – 37 dB |
| 108 MHz | < – 37 dB |
| 144 MHz | +20 dB, NF= 0.7 dB, Input RL= -15dB, IP3out >37dBm |
| 148 MHz | +20 dB, NF= 0.7 dB, Input RL= -15dB, IP3out >37dBm |
| 288 MHz | < – 19 dB |
| 222 MHz | < – 19 dB |
| 432 MHz | < – 20 dB |
Extreme Low Loss on transmit side thanks to RT/duroid® 5880 Laminate. Less than 0.1 dB.
With Excellent Wide-band Return Loss 144 – 148 MHz. Better than -35 dB.
Transmitting side of EME2-144:
| Frequency: | Input Return Loss (S11): | Insertion Loss (S21): |
| 144 MHz | < – 35 dB | 0.087 dB |
| 148 MHz | < -35 dB | 0.088 dB |
Gain -20 dB, NF= 0.7 dB, Input RL= -15dB, IP3out >37dBm
1500W Low Noise Pre amplifier with Relay Switches and Band Pass Filter EME2-144 Measured Gain on HF 160m to 15m
2m 1500W Transmit/Receive Relay Switches Low Noise Preamplifier Band-pass Filter EME2-144 Measured Gain 28 MHz to 108 MHz
144-148MHz 1500W Low Noise Preamplifier with Relay Switches and Band Pass Filter EME2-144 Measured-Gain from 50 MHz to 432 MHz
Important details:
| Power consumption: | + 12 V, 300 mA |
| Max. power SWR 1:1 | 1500 W |
| Max. power SWR 1:1.5 | 950 W |
| Max. power SWR 1:2 | 700 W |
| Max. power SWR 1:3 | 500 W |
| Connectors: | “N” |
| By order: | 7/16 DIN |
| Outdoor version: | +9 EUR |
With this equipment, sequencer is mandatory. To switch from receiving to transmitting put on sequencer 200 ms delay.
EME2-144 Low Loss Bandpass Filter Low Noise Preamplifier Transmit/Receive High Power Relay Switches Block Diagram.
Our EME – Earth-Moon-Earth famil. Band-Pass filters + Amplifiers + High Power Relays
6 meter band, EME2 – 50: EME2-50
6 meter band, EME3 – 50: EME3-50
4 meter band, EME2-70: EME2-70
4 meter band, EME3-70: EME3-70
2 meter band, EME2-144: This one.
2 meter band, EME3-144: EME3-144
70 cm band, EME2-432: Soon
70 cm band, EME3-432: Soon
Peter –
I test EME2-144 and it works excellent.
I can hear beacon i didn’t hear before.
This is really professional LNA amplifier
Peter SM7JPI
Adrian –
The 12 element 2m antenna PA144-12-7BGP and EME2-144 are working brilliantly in the contests.
Adrian G4JBH