#!/usr/bin/gbx -x ~ħ8_oo# Gambas Project File 1.0 Project=loopantenna Title=vo1pwfloop Description=vo1pwf loop antenna calculator. 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In order to properly calculate and construct the antenna the velocity factor should be known. The most common one I use is RG-59 which is a non foam core and has a velocity factor of .66 This information may be written on the coax cable itself. If not a quick google search and you should be able to find out for sure. An antenna and feedline books usually contain this information as well :::NOTE::: YOU MUST CHANGE THIS VALUE YOURSELF. IF YOU DO NOT AND YOUR 75 OHM COAX HAS A DIFFERENT VELOCITY FACTOR THAN .66 THEN YOUR ANTENNA WILL MOST LIKELY NOT WORK PROPERLY, HAVE HIGH SWR AND POSSIBLY DAMAGE YOUR EQUIPMENTBorderTextLabelTextAreaWindowFormMoveTextFixedSunkenReadOnlyWrap{xV4  B<   (#)27>H`BU # 1#   0#     #     PFrmAbout.$loadTextArea1The VO1PWF loop calculator is simply a calculator to use for making loop antennas, I used the formulas to complete a 144 Mhz antenna and I must say these antennas work wonderfully. Loops tend not to pick up too much noise and are somewhat directional haveing very little radiation off the sides of the antenna I hope you find this software usefull and you can find more like this at http://www.linuxwolfpack.com 73's VO1PWFLabel1Serif,18VO1PWF LOOP CALCULATORBorderAlignFontLabelTextAreaWindowFormMoveTextFixedReadOnlyWrapCenterAlignmentSunken{xV4  B< -4 =QX^ciry(~Q^`BU # {f#   0p0#    p #     FrmUseage.$loadTextArea1Loops are fun antennas to make and can be quite good to use. However they act differently than say a vertical or dipole. They tend to be broad banded and reject interferance. HORIZONTAL POLORIZATION ======================= To use the loop antennas in a horizontal plane, such as needed for ssb work place the antenna such that the side that has the coax connected to it facing closest to the ground. This is also shown on the main program window. VERTICAL POLORIZATION ======================= For repeater work and most other forms of communication you must use vertical polorization. To achieve this place the antenna where by the side of the antenna which has the coax soldered to it is on the side. It doesnt matter which side as in left side should have the connection; just as long as its a side and not on the top or bottom. You will also find this antenna performs much better if you have the part that has the center soldered to it facing upwards and not towards the ground. Center conductor up, braid connection facing downward. Label1Serif,18Using Loop AntennasBorderAlignFontLabelTextAreaWindowFormMoveTextFixedReadOnlyWrapCenterAlignmentSunken.gambas/FRMABOUT.gambas/FRMMAIN.gambas/FRMUSEAGE.gambas/FRMVF.projectUntitled.jpgfrmicon.gif#dlT, h 0^0=8v EQ QhS_