4m Input Band-Pass Filter with Preamplifier EME3-70EXP 1500W

A Complete Solution for split RX 4m Input Band-Pass Filter with Preamplifier EME3-70EXP 1500W. 4m Ultimate Transmit-Receive with frequency range 70-70.5MHz. Integrated high selectivity, high Q, super low loss input band pass filter to prevent overload from out-of-band signals. There are no HF 1.8- 30MHz, 6m 50-54MHz, 2m 144-148MHz, or 70cm 430-450MHz stations that could overload this EME3-70EXP preamplifier. 1500W legal limit relays are integrated inside the EME3, including an isolation relay. The extremely high-power device you always asked for.

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

 

4m Input Band-Pass Filter with Preamplifier EME3-70EXP 1500W Appearance:

EME3-70EXP consists of three components:
1. 70-70.5MHz High Selectivity, High Q, Low Loss RX Bandpass Filter. Specially designed to suppress HF, 50MHz, FM and 2m signals
2. Wideband Low Noise Amplifier.
3. High Power Relays

Receive gain of 4m Input Band-Pass Filter with Preamplifier EME3-70EXP:

1.82 MHz: < – 100 dB
7.1 MHz: < – 80 dB
14 MHz: < – 52 dB
21 MHz: < – 42 dB
28 MHz: < – 32 dB
50 MHz: < – 6 dB
70 MHz: +26 dB, NF= 0.8 dB, Input RL= -15dB, IP3out >36dBm
70.5 MHz: +26 dB, NF= 0.8 dB, Input RL= -15dB, IP3out >36dBm
98 MHz: < – 10 dB
108 MHz: < – 37 dB
140 MHz: < – 30 dB
144 MHz: < – 31 dB
288 MHz: < – 30 dB
432 MHz: < – 48 dB

Maximum power input at SWR: 1:1 1500W, 1:1.5 950W, 1:2 700W, 1:3 500W

 

Transmitting side of EME3-70EXP Return Loss -35dB and insertion loss 0.03dB

 

EME3-70EXP  Measured Gain on 40m to 6m (7MHz to 50MHz)

 

4m Preamplifier EME3-70EXP Measured Gain 28 MHz to 144 MHz

 

Order Options of 4m Input Band-Pass Filter with Preamplifier EME3-70EXP:

• Outdoor housing (+12 EUR). The box used is “DB”
• Fail Safe Relay (+12 EUR). More explanations are here
• Gain Regulation (+7 EUR)
• 7/16 DIN connectors (+50 EUR)

When ordering, put in the notice options you need.

Advanced-Sequencer Connection Possibilities EME2-EME3-CROSS-XPOL-Polarization-Switch-H-V-RHCP-LHCP (PDF)

To use the EME2 or EME3, as well as any other in-line preamplifier, the Sequencer is mandatory. Put on Sequencer 30ms delay. With our Advanced Sequencer, we offer free wiring with 1m wires. Yours is just to extend to your preferred length.

 

Our EME2 – EME3 complete family 8m – 23cm is here.