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.
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 2m12DX7 (PA144-12-7BGP) and EME2-144 are working brilliantly in the contests.
Adrian G4JBH
Joe –
I have received the EME2-144 Outdoor and Bias Tee.
They are installed on the tower and working great!!
Thank You for making a quality product available to the Amateur Community!!
Joe KB2KIR
John –
My EME2-432 preamp arrived on Friday, the day before an ARRL UHF contest, which was the first test of the 432 preamp. My 432 radio is an Icom IC-9700 and the sensitivity was greatly improved. I did a few tests with other stations running FT8 and in some cases could not decode the stations with the preamp in bypass mode but they had very strong signals with the preamp enabled. I also have the EME2-144 2meter preamp and have been completely satisfied with its performance.
73
John WA2FZW