2m IC9700 Preamplifier With 300W Relays Contest2-144 for ICOM Radios

You want contesting or low-power EME, but need a good preamplifier with transmit/receive relays and direct drive with your new ICOM IC-9700, IC-910H, or similar radios. 2m IC9700 Preamplifier With 300W Relays Contest2-144 is a key solution. Full band coverage 144-148MHz. Integrated very sensitive preamplifier with super low-loss input band pass filter, which will prevent out-of-band stations from lowering receiver sensitivity and your contest performance. Integrated Bias Tee, so no need for additional wires or power supplies. Just an ICOM radio.

 

2m IC9700 Preamplifier With 300W Relays Contest2-144 for ICOM Radios Apperance:

2m IC9700 Preamplifier With 300W Relays Contest2-144 for ICOM Radios consist of:

1. 2m BandPass Filter 144-146MHz on input side
2. Low noise preamplifier
3. High power relays
4. Isolation relays
5. 144 MHz Bias Tee similar to this one.

 

How to setup ICOM IC-9700:

 

ICOM IC-9700 Function EXT P.AMP

 

ICOM IC-9700 2m Preamplifier ON

 

Put ICOM IC-9700 External 2m Preamplifier Delay 30ms

 

2m IC9700 Preamplifier With 300W Relays Contest2-144 for ICOM Radios Characteristics:

Receive gain:
1.8 -28MHz < –47dB
50MHz –34dB
70MHz –24dB
144 – 148MHz: +24.9dB, NF= 0.65 dB, Input RL= -15dB, IP3out >37dBm
222MHz –13dB
288MHz –25dB
430-450MHz –31dB
Power consumption: +12V, 230mA
Transmit delay: 30 ms
Transmit path: RL≤ -35dB, Max SWR ≤1.04, Insertion Loss 0.09dB
Maximum power input at SWR 1:1 300W, 1:1.5 250W, 1:2 150W, 1:3 100W

 

2m IC9700 Preamplifier With 300W Relays Contest2-144 Options by Order:

• Outdoor version in DB plastic box IP63 rating +12 EUR
• SO239 Silver Plated Teflon Connectors +10 EUR
• 7/16 DIN connectors 50 EUR

 

Measured data on assembled 2m IC9700 Preamplifier with 300W Relays Contest2-144 for ICOM Radios

2m IC-9700 Preamplifier With 300W Relays Contest2-144 HF Gain

 

2m IC-9700 Preamplifier With 300W Relays Contest2-144 VHF Gain

 

2m IC-9700 Preamplifier With 300W Relays Contest2-144 VHF-UHF Gain

 

2m IC-9700 Preamplifier With 300W Relays Contest2-144 Gain and Return Loss

 

2m IC-9700 Preamplifier With 300W Relays Contest2-144 Transmit Path Loss and SWR

 

Please refer to the important manual:
Advanced-Sequencer Connection Possibilities EME2-EME3-CROSS-XPOL-Polarization-Switch-H-V-RHCP-LHCP (PDF)

See also the instructions made by Bob NE1I
https://antennas-amplifiers.com/downloads/Contest2-144-IC9700-Setup.pdf

 

For other Contest2 and EME2 – EME3 family look here: