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THE 'LOGI'
LOG PERIODIC
ANTENNA
Ramsey Electronics Model No.
Constructed on rugged FR-4 material, it requires no tuning and
has no fragile antenna elements to break or twist! Covers the
entire 900 to over 2,500 MHz frequency range.
Why settle for any old antenna... this little baby "compresses"
the signal into a powerful beam that is 4 times more powerful in
the direction you desire!
Easy hookup to your Receiver or Transmitter
•
Small thin size with excellent broadband performance
•
Solid 6 dB gain from 900 to over 2,000 MHz!
•
VSWR less than 2:1 - great for transmitters up to 10 Watts!
•
Easily mounted by itself or makes a great feed for reflector
•
dishes
• Construction ideas for a wideband corner reflector and a
'grid' reflector dish are covered in the manual!
• Very directional - ideal for point-to-point links
LPY2 • 1
LPY2
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Table of Contents
Summary of Contents for Ramsey Electronics LPY2
- Page 1 THE ‘LOGI’ LOG PERIODIC ANTENNA Ramsey Electronics Model No. Constructed on rugged FR-4 material, it requires no tuning and has no fragile antenna elements to break or twist! Covers the entire 900 to over 2,500 MHz frequency range. Why settle for any old antenna… this little baby “compresses”...
- Page 2 Write or call for our free Ramsey catalog. Ramsey Electronics publication No. MLPY2 Rev 1.1 COPYRIGHT 2001 by Ramsey Electronics, Inc. 590 Fishers Station Drive, Victor, New York 14564. All rights reserved. No portion of this publication may be copied or duplicated without the written permission of Ramsey Electronics, Inc.
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Page 3: Table Of Contents
Standard Hook-up ... 5 Low Frequency Modification ... 7 Building a Corner Reflector ... 7 Building a Reflector Grid ... 9 LPY2 Return Loss Plot ... 10 Return Loss vs. VSWR Chart ... 10 Warranty ... 11 RAMSEY ELECTRONICS, INC. -
Page 4: Introduction
Instead of forcing you to figure out all the math and spend hours experimenting, the creation of the Logi antenna (for frequencies between 900 and 2600 MHz) comes to the rescue! LPY2 • 4 Feed Point... -
Page 5: Standard Hook-Up
It is directly connect on the top side however. Bottom View of the LPY2 Logi Antenna Time to start playing! Interface the other end of the coax feed... -
Page 6: Low Frequency Modification
Any type of perforated aluminum or copper sheet will work well. Small holes in the material help to cut down on wind resistance. The overall reflector length and width sizes should be chosen to properly work at the lowest LPY2 • 6... -
Page 7: Building A Reflector Grid
Then he used a nylon wire tie at the end of the boom to squeeze the slotted pipe like a vise! Wow!!! Simple to make and highly effective! If you plan to do the same, here is a quick shopping list: LPY2 • 7... - Page 8 1 can of PVC cement 3 4” minimum nylon wire ties 10.0" -12.0" 12.0" 90 ° Corner Reflector Insert the Logi narrow end first. Cut a slot into the PVC boom. Logi front edge placed 1.5" to 3" from vertex. LPY2 • 8...
- Page 9 LPY2 mounted on a Grid Reflector LPY2 mounting Boom for a Grid Reflector LPY2 • 9...
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Page 10: Lpy2 Return Loss Plot
2.323 2.100 10.0 1.925 The LPY2 offers exceptional wide band characteristics from 900 MHz to 2.6 GHz and can be used as a Receive or Transmit (10 Watts max) antenna! Standard guidelines for antenna systems: • Receiver Antenna Match >... -
Page 11: Warranty
But on rare occasions a sour component can slip through. All our kit parts carry the Ramsey Electronics Warranty that they are free from defects for a full ninety (90) days from the date of purchase. Defective parts will be replaced promptly at our expense. If you suspect any part to be defective, please mail it to our factory for testing and replacement. -
Page 12: Victor, New York
Introduction ...4 Antenna Description ...4 Standard Hook-up ...5 Building a Corner Reflector ...7 Building a Reflector Grid ...9 LPY2 Return Loss Plot ...10 Warranty ...11 REQUIRED TOOLS • Soldering Iron • Thin Rosin Core Solder • Needle Nose Pliers •...