4 meter BPF VLNA and relay Switches 1500 W EME2-70

219,00 

A Complete Solution for 70 MHz – 70.5 MHz 1500W Transmit-Receive 4 meter Competition System with Low Loss Receive Band Pass Filter and Preamplifier: EME2-70

QRO – Extreme power on transmit and low noise on receive with integrated band-pass filter.

QRO made on low loss dielectric RT/duroid® 5880 Laminates (not on FR4 Important!). 

4 meterUltimate Low Noise Preamplifier Complete Transmit Receive 1500W Relay Switch EME2-70

EME2-70 device consists of three components:
 
1. 70 – 70.5 MHz High Selectivity, High Q, Low Loss RX Bandpass Filter. Specially designed to suppress HF, 50MHz, FM and 2m signals. Its characteristic is shown in the following graph. The filter itself has an extremely low attenuation of only 0.12 dB:
4 meter Band Pass Filter Insertion Loss
 
3. Double High Power Relays with 16A contacts.
 
Receive gain:
Frequency: Gain:
1.82 MHz < – 65 dB
7.1 MHz < – 65 dB
14 MHz < – 63dB
21 MHz < – 50 dB
28 MHz < – 43 dB
50 MHz < – 17 dB
70 MHz +20 dB, NF= 0.8 dB, Input RL= -15dB, IP3out >36dBm
70.5 MHz +20 dB, NF= 0.8 dB, Input RL= -15dB, IP3out >36dBm
88 MHz < – 11.8 dB
98 MHz < – 27 dB
108 MHz < – 26 dB
144 MHz < – 26 dB
222 MHz < – 26 dB
432 MHz < – 19.5 dB
The characteristics of Receiving Gain can be seen in the following graphs:
– HF Attenuation:
4 meter Bandpass Filter HF Attenuation
– 50 MHz Attenuation:
4 meter Band Pass Filter 6 meter attenuatin
 
Transmitting Output Return Loss (Measured):
Frequency: Attenuation: Return Loss:
65 MHz 0.02 dB 30 dB
68 MHz 0.02 dB 40 dB
70 MHz 0.015 dB 50+ dB
70.5 MHz 0.015 dB 50+ dB
76 MHz 0.02 dB 30 dB
The characteristics of Transmitting Output Return Loss can be seen in the following graph:
70-70.5MHz-Transmitting-Side-of-the-Eme2-70-Filter
Extreme Low Loss on transmit side thanks to RT/duroid® 5880 Laminate. Less than 0.03 dB.
With Excellent Wide-band Return Loss 70 – 75 MHz. Better than 50 dB.
Important details:
Power consumption: + 12 V, 220 mA
Max. power SWR 1:1 1500 W
Max. power SWR 1:1.5 1000 W
Max. power SWR 1:2 750 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.
Outdoor version with IP63 protection.

Our EME family:

6 meter band, EME2-50:EME2-50N

6 meter band, EME3-50:EME3-50

4 meter band, EME2-70: This one

4 meter band, EME3-70: EME3-70

2 meter band, EME2-144: EME2-144

2 meter band, EME3-144:EME3-144

EME3-70 Low Loss Bandpass Filter Low Noise Preamplifier Transmit/Receive High Power Relay Switches Block Diagram.

4m Transmit Receive Relay Switches Bandpass Filter Low Noise-Preamplifier EME3-70 Block Diagram

Additional information

Weight 0.50 kg