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 to split and receive a separate connector.
QRO made on low dielectric loss RT/duroid® 5880 Laminates (not on FR4 Important!).
| Frequency: | Gain: |
| 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 |
| Frequency: | Input Return Loss (S11): | Insertion Loss (S21): |
| 432 MHz | < – 31 dB | 0.13 dB |
| 440 MHz | < -31 dB | 0.13 dB |
| 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 |
| Connectors: | “N” |
| By order: | 7/16 DIN |
| Outdoor version: | +9 EUR |
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 the sequencer?
Use these schematics. Quality sequencer is mandatory.
How does the fail-safe option works?
Fail-safe relay is the possibility to have information, on did EME2-432 is switched to transmit position or not.
In that situation, the additional Fail Safe “FS” relay will switch to ground or not an additional line.
That information sequencer could use to take another step in switching linear amplifiers or transceivers.
If by chance +12V was not disconnected from EME2 (receive position) linear amplifier will not burn the preamplifier, because the sequencer will not have information that EME2 fail-safe relay is switched.
Summary: With a fail-safe relay, a linear amplifier or transceiver will never burn the preamplifier because of any problematic situation.
It could work only if the sequencer has an input port for a 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
Peter –
I test EME2-432 and it works amazing.
I can hear beacon i didn’t hear before.
This is really professional LNA amplifier
Peter SM7JPI
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 2 meter preamp and have been completely satisfied with its performance.
73
John WA2FZW