70cm Ultimate Transmit-Receive Relay Switches BPF VLNA EME2-432 1200W

70cm Ultimate Transmit-Receive Relay Switches BPF VLNA EME2-432 1200W

(2 customer reviews)

239,00 

70cm Ultimate Transmit-Receive Relay Switches BPF VLNA EME2-432 1200W

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!).

70cm Super Low Noise Preamplifier EME2-432 With Input BPF 1200W T/R Transmit Receive Relays 430MHz-450MHz

EME2-432 device consists of three components:
1. 70 cm 430 – 440 MHz Ultimate Receiving Bandpass Filter on the input side.
2. Wideband Low Noise Amplifier.
3. High Power High Current Relays + isolation relays.
4. By order, the Fail Safe Relay option
5. By order, integrated super high selectivity SAW filter with a bandwidth of just about 8 MHz. From 430-438 MHz
Frequency and 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

Extreme Low Loss on the transmission side thanks to RT/duroid® 5880 Laminate. About 0.13 dB.
With Excellent Wideband Return Loss 430 – 450 MHz -31 dB.
Measured Insertion Loss 70cm Ultimate T/R Relay Switches BPF VLNA EME2-432 Power 1200W

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

EME2-432 430-450MHz Low Noise Preamplifier with Input Band Pass Filter 1200W Transmit Receive Relays

1200 W Low Noise Preamplifier with Relay Switches and Band Pass Filter EME2-144 Measured Gain on HF 160m to 15 m

70cm 430MHz 440MHz 450MHz Ultimate T/R Relay Switches BPF VLNA EME2-432 Power 1200W Measured HF-Gain

70 cm 1200W Transmit / Receive Relay Switches Low Noise Preamplifier Band-pass Filter EME2-144 Measured Gain 28 MHz to 144 MHz

70cm 432MHz Transmit Receive Transmit - Receive Relays Input Filter LNA EME2-432 Power 1200W Measured HF 6m 4m 2m Gain

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

432-440-450MHz-Transmit - Receive Relay Switches BPF Filter LNA EME2-432 Power 1200W Measured 6m 2m 70cm Harmonic 23cm Gain

Important details:
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
With this equipment, the sequencer is mandatory. To switch from receiving to transmitting put on a sequencer 150 ms delay.

Outdoor version with IP63 protection EME3-432 Outdoor:

70cm 432MHz Ultimate Transmit Receive Relay Switches Input BPF LNA EME3-432 Outdoor Version Power 1200W
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.

EME2-432 Low Noise Preamplifier With Low Loss Band Pass Filter PGA103 Power 1200W Transmit Receive Relays 430-440-450MHz Schematic

 

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 work?

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 be used 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 the 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

4 meter band, EME2-70: EME2-70

4 meter band, EME3-70: EME3-70

2 meter band, EME2-144: EME2-144

2 meter band, EME3-144: EME3-144

70 cm band, EME2-432:

70 cm band, EME3-432: EME3-432

Weight 0,50 kg

2 reviews for 70cm Ultimate Transmit-Receive Relay Switches BPF VLNA EME2-432 1200W

  1. 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

  2. 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

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