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demi L5ULNA Series Quick Start Manual

demi L5ULNA Series Quick Start Manual

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SPECIFICATIONS
Noise Figure:
Gain:
Frequency Range:
Input Voltage:
Current Drain:
DESCRIPTION:
The L5ULNA series is a low noise amplifier designed by W5LUA and Down East Microwave
Inc. using the latest PHEMPT technology.
This LNA was designed for receive only
purposes including, EME, and other
standard weak signal reception between
5650 and 5800 MHz. The LNA is
assembled in a machined chemical
etched enclosure with SMA connectors
only. It is biased through the external DC
feed through connector. The standard
model is available as a board or complete
kit but not recommended unless you have
suitable gain and noise figure measuring
equipment.
INSTALLATION and USE:
Depending on your application, the LNA may be installed anywhere in your system to
increase gain. To maintain or improve the systems noise figure requires the LNA to be installed as
close to the systems antenna as possible. If you are using this LNA in a transceive system with
transmit bypass relays, be sure of their isolation characteristics and transmit power handling
capabilities before transmitting. Use only interconnecting cables and adapters that are rated for
use at or above 10 GHz. Inadequate cabling or cables with poor shielding may cause system
instabilities, signal loss, or undesirable intermittent operation.
The connector marked INPUT, is to be connected to the antenna.
connected to the receiver. The LNA requires protection from lightning or high static discharges.
The LNA will withstand input RF levels of up to 20 mW. Other precautions will need to be made
such as sequencing or protection against voltage spikes on the +DC line.
/Built/L5ULNA.doc
L5ULNA, LNH & LNHG
L5ULNA
<0 .7 dB
> 14 dB
5650-5800 MHz
7 - 16 VDC
< 50 ma
L5ULNAH
<0.8 dB
>25 dB
5650-5800 MHz
7 - 16 VDC
<75 ma
Standard L5ULNA shown above
1
L5ULNAHG
<1.0dB
>40 dB
5650-5800 MHz
7 - 16 VDC
<100 ma
The OUTPUT is
Rev. A 7/8/24

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Summary of Contents for demi L5ULNA Series

  • Page 1 <100 ma Current Drain: < 50 ma DESCRIPTION: The L5ULNA series is a low noise amplifier designed by W5LUA and Down East Microwave Inc. using the latest PHEMPT technology. This LNA was designed for receive only purposes including, EME, and other standard weak signal reception between 5650 and 5800 MHz.
  • Page 2 OPERATING: Expected performance with the LNA correctly installed should be overall improvement in gain and noise figure of the receive system. The proper installation of a LNA becomes more and more important at these frequencies and because of out of band interference and high insertion loss of all connection cables and connectors.
  • Page 3 L5ULNA SCHEMATIC OUTPUT INPUT IC 1 VR 1 DC INPUT DC INPUT 1N4000 Standard Single Stage LNA >25 dB and > 40 dB additional amplifiers /Built/L5ULNA.doc Rev. A 7/8/24...

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