Ramsey Electronics DA-160 Use Manual

Manual is about: DIPOLE ANTENNA

Summary of DA-160

  • Page 1

    Ramsey da series dipole antenna page 1 ramsey electronics da-160 • user tested, proven antenna technology to bring you the best value. • clear, concise instructions are just what you won’t find with other antennas. Our manual teaches you everything that you need to know, and even points you in the r...

  • Page 2

    Page 2 ramsey da series dipole antenna partial list of available kits ramsey transmitter kits • fm-10 fm stereo transmitter • fm-1,2,4 fm wireless microphones • pb-1 telephone transmitter • am-1 am transmitter ramsey receiver kits • fr-1 fm broadcast receiver • ar-1 aircraft band receiver • sr-1 sho...

  • Page 3: Dipole

    Ramsey da series dipole antenna page 3 dipole antenna kit ramsey publication no. Da manual price only: $5.00 table of contents introduction ......................................................... 4 antenna description ............................................ 4 how does a dipole antenna work? ....

  • Page 4

    Page 4 ramsey da series dipole antenna introduction welcome to your new dipole antenna. Dipole antennas are an extremely popular form of antenna today, because they satisfy the demands of almost any application! There are not many antenna designs that are so low cost, simple and “invisible”. You may...

  • Page 5

    Ramsey da series dipole antenna page 5 how does a dipole antenna work? A dipole antenna is a long wire that is suspended between two points. The wire is cut to a specific length, and is fed in the middle with a radio frequency (rf) signal. One half of the antenna is hooked to the ground wire of the ...

  • Page 6

    Page 6 ramsey da series dipole antenna parts list 3 end insulators length of coaxial feedline cable length of rope 1 pl-259 connector 1 ug-175/u reducer length of antenna wire 2 wire cable ties required, not supplied some good friends (suckers) soldering iron gun with rosin core solder waterproof se...

  • Page 7

    Ramsey da series dipole antenna page 7.

  • Page 8

    Page 8 ramsey da series dipole antenna length, we have included a bit more wire than you should need to build either antenna. This allows you to decide which antenna will serve you better. Construction notes just a few notes before you begin constructing your antenna. • be careful when constructing ...

  • Page 9

    Ramsey da series dipole antenna page 9 total length or an inverted v = 445/ frequency (in mhz) (in feet) your frequency_________ calculated length___________ antenna band frequency (khz) normal dipole inverted v all band > 1850 129’3” 122’9” 160m 1850 129’3” 122’9” 80m 3750 63’9” 60’6” 40m 7050 33’1...

  • Page 10

    Page 10 ramsey da series dipole antenna for example, to make a dipole antenna on 14.050 mhz, divide 468 by 14.05. The total dipole length be 33.31 feet or approximately 33 ‘4”. Don’t forget that you need to insert a feedline in the center, so it must be cut into two pieces that are one half the leng...

  • Page 11

    Ramsey da series dipole antenna page 11 assembling the antenna start by finding three locations to attach your antenna. The center location must be close enough to your ham shack so that the coaxial cable will reach, but should also be as high as possible. Attaching it to a location on the roof, or ...

  • Page 12

    Page 12 ramsey da series dipole antenna taking the end of one of the wires, pass it through the hole in the insulator until six inches are through. Next, bend the wire back on itself and immediately begin to wrap it very snugly and neatly around itself. Ideally, you should have about six or seven tu...

  • Page 13

    Ramsey da series dipole antenna page 13 wire. You should make sure that the center conductor fits through the hole in the center pin, and there are no stray strands being folded backwards. This will have the unfortunate tendency of shorting out your antenna. The connector should cover the braided wi...

  • Page 14

    Page 14 ramsey da series dipole antenna stranded lead about one inch long. Next, strip the center conductor 1/4 inch closer to the end. Tin both leads. Wrap the coax wire around the center insulator making sure that it is snug in one of the two grooves. The end of the coax should loop around and fol...

  • Page 15

    Ramsey da series dipole antenna page 15 tuning your antenna hook up your radio to an swr meter and the antenna. Set it for a portion of the band that you think you will be using most often. Since all of our antenna length calculations are for the center of the band, the antenna should be slightly lo...

  • Page 16

    Page 16 ramsey da series dipole antenna da dipole antenna quick reference page guide introduction ......................................................... 4 antenna description ........................................... 4 how does a dipole antenna work? ................... 6 schematic diagram .......