No products in the cart.
A Complete Solution for 430-450 MHz 1200 W Transmit-Receive 70 cm Competitions and Moon Bounce EME2-432
QRO – Extreme power on transmit and low noise on receive with integrated Input band-pass filter. With two connectors doesn’t need split receive separate connector.
QRO made on low dielectric loss RT/duroid® 5880 Laminates (not on FR4 Important!).
EME2-432 device consists of three components:
1. 70 cm 430 – 440 MHz Ultimate Receiving Bandpass Filter on input side.
3. High Power High Current Relays + isolation relays.
4. By order, Fail Safe Relay option
5. By order, integrated super high selectivity SAW filter with bandwidth of just about 8 MHz. From 430-438 MHz
|1.82 MHz||< – 60 dB|
|3.80 MHz||< – 60 dB|
|7.1 MHz||< – 60 dB|
|14 MHz||< – 60 dB|
|28 MHz||< – 54 dB|
|50 MHz||< – 39 dB|
|70 MHz||< – 31 dB|
|144 MHz||< – 12 dB|
|148 MHz||< – 12 dB|
|432 MHz||+20 dB, NF= 0.68 dB, Input RL= -13dB, IP3out > 37dBm|
|440 MHz||+20 dB, NF= 0.68 dB, Input RL= -13dB, IP3out > 37dBm|
|450 MHz||+20 dB, NF= 0.68 dB, Input RL= -13dB, IP3out > 37dBm|
|864 MHz||< – 17 dB|
|1296 MHz||< – 25 dB|
Extreme Low Loss on transmit side thanks to RT/duroid® 5880 Laminate. About 0.13 dB.
With Excellent Wideband Return Loss 430 – 450 MHz -31 dB.
Transmit side of EME2-432. Measured Insertion Loss and Return Loss:
|Frequency:||Input Return Loss (S11):||Insertion Loss (S21):|
|432 MHz||< – 31 dB||0.13 dB|
|440 MHz||< -31 dB||0.13 dB|
Gain +20 dB, NF= 0.68 dB, Input RL= -13 dB, IP3out > 37dBm
1200 W Low Noise Pre amplifier with Relay Switches and Band Pass Filter EME2-144 Measured Gain on HF 160m to 15 m
70 cm 1200W Transmit / Receive Relay Switches Low Noise Preamplifier Band-pass Filter EME2-144 Measured Gain 28 MHz to 144 MHz
432-440-450MHz Transmit/Receive (T/R) Relay Switches BPF Filter LNA EME2-432 Power 1200W Measured 6m, 2m, 70cm, Harmonic and 23 cm Gain
|Power consumption:||+ 12 V, 300 mA|
|Max. power SWR 1:1||1200 W|
|Max. power SWR 1:1.5||1000 W|
|Max. power SWR 1:2||600 W|
|Max. power SWR 1:3||400 W|
|By order:||7/16 DIN|
|Outdoor version:||+9 EUR|
With this equipment, sequencer is mandatory. To switch from receiving to transmitting put on sequencer 150 ms delay.
Outdoor version with IP63 protection EME3-432 Outdoor:
EME2-432 Low Noise Preamplifier With Super Low Loss Band Pass Filter PGA103+ VLNA Maximal Power 1200 W Transmit Receive Relays 430-450 MHz Block Diagram.
How to properly connect any EME2 or EME3 for any band to sequencer?
Use these schematic. Quality sequencer is mandatory.
How does fail safe option works?
Fail safe relay is possibility to have information, did EME2-432 is switched to transmit position or not.
In that situation, additional Fail Safe “FS” relay will switch to ground or not additional line.
That information sequencer could use to take another steps in switching linear amplifier or transceiver.
If by chance +12V was not disconnected from EME2 (receive position) linear amplifier will not burn the preamplifier, because sequencer will not have information that EME2 fail safe relay is switched.
Summary: With fail safe relay, linear amplifier or transceiver will never burn the preamplifier because of any problematic situation.
It could work only if sequencer have input port for fail safe relay (line). And logic to use it.
Our EME – EME family. Band-Pass filters + VLNA + T/R 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