Everhardt Antennas

<body> <p> </p> <p align="center"><img border="0" src="logo6.jpg" alt="Everhardt Antennas" width="327" height="92"></p> <table border="0" cellpadding="3" cellspacing="5" style="border-collapse: collapse" bordercolor="#111111" width="100%"> <tr> <td width="100%"> <p align="center"><font color="#0000FF"><br> THE COMPLETE LINE OF MOBILE<br>  COMMUNICATIONS ANTENNAS & ACCESSORIES<br>  </font></p> </td> </tr> <tr> <td width="100%"> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td valign="baseline" width="42"> <img src="bullet.jpg" width="15" height="15"></td> <td valign="top" width="100%">Marvel Communications Company, Inc, home of Everhardt “TIGER” antennas, has been making professional grade mobile communications antennas and accessories in Fort Worth, Texas since 1982. </td> </tr> </table> </td> </tr> <tr> <td width="100%"> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td valign="baseline" width="42"> <img src="bullet.jpg" width="15" height="15"></td> <td valign="top" width="100%">Marvel is a major supplier of original equipment antennas to many of the heavy truck manufacturers in the U.S.A. </td> </tr> </table> </td> </tr> <tr> <td width="100%"> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td valign="baseline" width="42"> <img src="bullet.jpg" width="15" height="15"></td> <td valign="top" width="100%">Our Everhardt “TIGER” antenna products are well known in CB circles as being very high quality and dependable. </td> </tr> </table> </td> </tr> <tr> <td width="100%"> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td valign="baseline" width="42"> <img src="bullet.jpg" width="15" height="15"></td> <td valign="top" width="100%">Whether you want fiberglass whip or stainless steel whip and coil antennas, we have your antenna. </td> </tr> </table> </td> </tr> <tr> <td width="100%"> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td valign="baseline" width="42"> <img src="bullet.jpg" width="15" height="15"></td> <td valign="top" width="100%">Whatever your mobile communications antenna needs may be, Marvel has a solution for you. </td> </tr> </table> </td> </tr> <tr> <td width="100%"> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td valign="baseline" width="42"> <img src="bullet.jpg" width="15" height="15"></td> <td valign="top" width="100%">A partial list of the various types of antennas we make would include CB, AM/FM, Weather band (NOAA), cellular phone, TV, scanner and 2-meter. </td> </tr> </table> </td> </tr> <tr> <td width="100%"> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td valign="baseline" width="42"> <img src="bullet.jpg" width="15" height="15"></td> <td valign="top" width="100%">For the RV and marine market we have a series of ‘NO GROUND’ antenna systems designed for use with fiberglass-bodied vehicles. </td> </tr> </table> </td> </tr> <tr> <td width="100%"> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td valign="baseline" width="42"> <img src="bullet.jpg" width="15" height="15"></td> <td valign="top" width="100%">We offer a complete line of coaxial cables, brackets, springs, and mounts (magnetic, mirror, roof, trunk, and gutter). </td> </tr> </table> </td> </tr> <tr> <td width="100%"> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td valign="baseline" width="42"> <img src="bullet.jpg" width="15" height="15"></td> <td valign="top" width="100%">Our premier CB antenna is the Master Blaster, an exclusive Everhardt design that may be the best CB antenna on the market today.</td> </tr> </table> </td> </tr> </table> <h2 style="line-height: 13.2pt; text-autospace: none" align="center"> <font color="#0000FF">Tuning CB Antennas</font></h2> <p class="MsoNormal" style="line-height: 13.2pt; text-autospace: none"> </p> <p class="MsoNormal" style="line-height: 13.2pt; text-autospace: none"> <font size="4" color="#FF0000"> <span style="font-family: Arial; font-weight: 700">WHY?</span></font><span style="font-size: 13.0pt; font-family: Arial"> </span><span style="font-size: 10.0pt; font-family: Arial">All signal transmitters, including CB radios require a <font color="#0000FF"><i>tuned</i></font> antenna system. Best performance is achieved when the output circuit of the CB radio <font color="#0000FF">“matches"</font> the system. The system includes the coax cable, the antenna mount, the antenna, and the vehicle.</span></p> <p class="MsoNormal" style="line-height: 12.45pt; text-autospace: none"> <span style="font-family: Bookman Old Style"> </span></p> <p class="MsoNormal" style="line-height: 12.45pt; text-autospace: none"> <span style="font-family: Bookman Old Style"><b><font size="4" color="#FF0000"> WHEN?</font></b> </span> <span style="font-size: 10.0pt; font-family: Bookman Old Style">All CB antennas should be tuned when they are first installed or if your customer complains about poor transmission distance.</span></p> <p class="MsoNormal" style="text-align: justify; line-height: 12.45pt; text-autospace: none; margin-left: 0in; margin-right: .2in; margin-top: 8.85pt; margin-bottom: .0001pt"> <font size="4" color="#FF0000"> <span style="font-family: Bookman Old Style; font-weight: 700">WHAT?</span></font><span style="font-size: 17.0pt; font-family: Bookman Old Style"> </span><span style="font-size: 10.0pt; font-family: Bookman Old Style">To tune a CB antenna, you will need an SWR meter and a short (2 to 3 feet) coax cable with PL- 259 connectors at both ends.</span></p> <p class="MsoNormal" style="line-height: 13.2pt; text-autospace: none; margin-top: 13.2pt"> <font size="4" color="#FF0000"> <span style="font-family: Bookman Old Style; font-weight: 700">WHERE?</span></font><span style="font-size: 13.0pt; font-family: Bookman Old Style"> </span><span style="font-size: 10.0pt; font-family: Bookman Old Style">All testing must be done in an open area. Stay at least 20 feet away from buildings and never perform tests in a garage or carport. The doors, hood, and trunk of the vehicle must also be closed. Oversight of these recommendations will result in inaccurate readings.</span></p> <p class="MsoNormal" style="line-height: 12.95pt; text-autospace: none"><b> <span style="font-size: 11.0pt"> </span></b></p> <p class="MsoNormal" style="line-height: 12.95pt; text-autospace: none"><b> <font size="4" color="#FF0000">HOW?</font><span style="font-size: 11.0pt"> </span></b><span style="font-size: 11.0pt">The SWR meter must be placed in line behind the CB radio. Check the instruction manual that came with the meter. <font color="#0000FF"><i>Measure and Record</i></font> the SWR on channels 1 and 40. This information will determine the need for tuning as well as the steps to take.</span></p> <p class="MsoNormal" style="line-height: 13.9pt; text-autospace: none"> <span style="font-size: 14.0pt; font-family: Bookman Old Style"> </span></p> <p class="MsoNormal" style="line-height: 13.9pt; text-autospace: none"> <font size="4" color="#FF0000"> <span style="font-family: Bookman Old Style; font-weight: 700">WHEN NO ADJUSTMENT IS NECESSARY</span></font></p> <p class="MsoNormal" style="line-height: 12.7pt; text-autospace: none"> <span style="font-size: 10.0pt; font-family: Bookman Old Style">If measurements are below 2.0 to 1 on both channels 1 and 40, it isn't necessary to make any adjustment unless you want to fine tune the system to balance the SWR at both ends of the frequency band. However, keep in mind that if the SWR, regardless of the reading, is the same on channels 1 and 40-adjustment to the antenna will generally have a negative effect.</span></p> <p class="MsoNormal" style="line-height: 17.0pt; text-autospace: none"> <span style="font-size: 15.0pt; font-family: Arial Narrow"> </span></p> <table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#FF0000" width="75%" bgcolor="#8080FF"> <tr> <td width="100%"> <p class="MsoNormal" style="line-height: 17.0pt; text-autospace: none"> <span style="font-family: Arial Narrow; font-weight: 700"> <font size="4" color="#FFFF00"> Special Note:</font></span></p> <p class="MsoNormal" style="line-height: 17.0pt; text-autospace: none"> <span style="font-family: Bookman Old Style"><font size="2">Since it is generally easier to reduce the physical characteristics of the antenna, all of our fiberglass CB antennas are made on the longer end of the specifications.  If any tuning is required, 98% of the time this will entail a physical reduction.  In any case, the ultimate goal is to achieve an SWR reading below 2.0 to 1 on any and all channels from 1 to 40.</font></span></td> </tr> </table> <p class="MsoNormal" style="line-height: 17.0pt; text-autospace: none"> </p> <p class="MsoNormal" style="line-height: 17.0pt; text-autospace: none"> <span style="font-family: Arial Narrow; font-weight: 700"> <font size="4" color="#FF0000">WHEN THE ANTENNA IS TOO LONG</font></span></p> <p class="MsoNormal" style="line-height: 12.95pt; text-autospace: none; margin-top: 4.3pt"> <span style="font-family: Arial Narrow"><font size="3" color="#0000FF"> FIBERGLASS WHIPS:</font></span></p> <p class="MsoNormal" style="line-height: 12.95pt; text-autospace: none; margin-top: .95pt"> <span style="font-size: 11.0pt; font-family: Arial Narrow">If the SWR on channel 40 is greater than that on channel 1, then your antenna is considered to be <font color="#0000FF">TOO LONG</font> and a <font color="#0000FF">REDUCTION</font> of physical height will correct this situation. To do this, simply remove the tip of the antenna and out off a 1/4" at a time until the reading is acceptable. Also, making short slits in the plastic covering of the antenna and unwinding and clipping off the wire works well.</span></p> <p class="MsoNormal" style="line-height: 12.7pt; text-autospace: none; margin-top: 1.4pt"> </p> <p class="MsoNormal" style="line-height: 12.7pt; text-autospace: none; margin-top: 1.4pt"> <span style="font-family: Arial Narrow"><font size="3" color="#0000FF">BASE AND/OR CENTER LOADED STEEL ANTENNAS:</font></span></p> <p class="MsoNormal" style="line-height: 12.7pt; text-autospace: none; margin-top: 1.65pt"> <span style="font-size: 11.0pt; font-family: Arial Narrow">If our steel series of antennas shows TOO LONG, simply loosen the set screw on the side of the <font color="#0000FF">"whip holder"</font> and lower the whip into the coil 1/4" at a time, tighten the screw, then take SWR reading.</span></p> <p class="MsoNormal" style="line-height: 12.45pt; text-autospace: none; margin-top: .45pt"> <span style="font-size: 11.0pt; font-family: Arial Narrow"> <font color="#FF0000">NOTE:</font> If the whip "bottoms out" before satisfactory SWR is achieved, out off 1/2" from bottom of the stainless steel whip and make final adjustment 1/4" at a time.</span></p> <p class="MsoNormal" style="line-height: 17.0pt; text-autospace: none"> <span style="font-size: 14.0pt"> </span></p> <p class="MsoNormal" style="line-height: 17.0pt; text-autospace: none"> <font color="#FF0000"><span style="font-size: 14.0pt; font-weight: 700">WHEN THE ANTENNA IS TOO SHORT</span></font></p> <p class="MsoNormal" style="line-height: 12.0pt; text-autospace: none">  </p> <p class="MsoNormal" style="line-height: 12.0pt; text-autospace: none"> <span style="font-family: Arial"><font size="3" color="#0000FF">FIBERGLASS WHIPS:</font></span></p> <p class="MsoNormal" style="line-height: 12.7pt; text-autospace: none; margin-top: 1.9pt"> <span style="font-size: 10.0pt; font-family: Arial">If the SWR on channel 1 is greater than that on channel 40, then your antenna is considered to be <font color="#0000FF">TOO SHORT</font> and <font color="#0000FF">INCREASING</font> the physical height will correct this situation. Because Everhardt CB antennas are made extra long, readings, which indicate <font color="#0000FF">“short”</font> normally, stem from ground plane deficiency (lack of vehicle metal surface for the antenna to reflect it's signal from). This condition is often corrected by adding a spring to increase the physical height.</span></p> <p class="MsoNormal" style="text-indent: .05in; line-height: 12.7pt; text-autospace: none"> </p> <p class="MsoNormal" style="text-indent: .05in; line-height: 12.7pt; text-autospace: none"> <font color="#0000FF"><span style="font-family: Arial Narrow"><font size="3"> BASE AND/OR CENTER LOADED </font></span><font size="3"> <span style="font-family: Arial Narrow; ">STEEL </span> </font></font><font size="3" color="#0000FF"> <span style="font-family: Arial Narrow">ANTENNAS:</span></font><span style="font-size: 11.0pt; font-family: Arial Narrow"> </span></p> <p class="MsoNormal" style="text-indent: .05in; line-height: 12.7pt; text-autospace: none"> <span style="font-size: 11.0pt; font-family: Arial Narrow"> If our steel series of antennas shows <font color="#0000FF">TOO SHORT</font>, simply loosen the set screw on the side of the <font color="#0000FF">"whip holder"</font> and pull out the whip from the coil 1/4" at a time until satisfactory SWR is achieved.</span></p> <p class="MsoNormal" style="line-height: 16.05pt; text-autospace: none"> <span style="font-size: 14.0pt; font-family: Arial"> </span></p> <p class="MsoNormal" style="line-height: 16.05pt; text-autospace: none"> <font color="#FF0000"> <span style="font-size: 14.0pt; font-family: Arial; font-weight: 700">DUAL ANTENNAS</span></font></p> <p class="MsoNormal" style="line-height: 12.2pt; text-autospace: none; margin-top: 5.75pt"> <span style="font-size: 10.0pt; font-family: Arial">Measurements and determination of short or long conditions are the same as the single antenna procedure. However, when tuning co-phased antennas, it is possible to adjust both antennas in equal amounts to keep them in perfect balance.</span></p> <p class="MsoNormal" style="line-height: 16.05pt; text-autospace: none"> <span style="font-size: 14.0pt"> </span></p> <p class="MsoNormal" style="line-height: 16.05pt; text-autospace: none"> <font color="#FF0000"><span style="font-size: 14.0pt; font-weight: 700">NO METAL - "NO PROBLEM"</span></font></p> <p class="MsoNormal" style="line-height: 12.7pt; text-autospace: none; margin-top: 4.05pt"> <span style="font-size: 11.0pt">See our full line of <font color="#0000FF">" No Ground "</font> plane CB antennas (Pg. 8) designed especially for MOTOR HOMES, FIBERGLASS TRUCKS, vans, motorcycles, and boats. These antennas work <font color="#0000FF">"even if you hold it in your hand"!!</font></span></p> <p align="center"><font size="6" color="#FF0000">"Tech Talk"</font></p> <p align="center"><font size="4" color="#0000FF">Transmission Pattern</font></p> <p align="center"><font size="2" color="#0000FF"> <img border="0" src="bullet2.jpg" width="10" height="10"> </font><font size="2">Antenna Location           Location and type of antenna system will create a variety of signal patterns</font></p> <div align="center"> <center> <table border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="600" height="379"> <tr> <td width="300" height="191"> <p align="center"><img border="0" src="images/tech1.jpg" width="300" height="191"></td> <td width="300" height="191"> <p align="center"> <img border="0" src="images/tech2.jpg" width="300" height="191"></td> </tr> <tr> <td width="300" height="188"> <p align="center"> <img border="0" src="images/tech3.jpg" width="300" height="191"></td> <td width="300" height="188"> <p align="center"> <img border="0" src="images/tech4.jpg" width="300" height="191"></td> </tr> </table> </center> </div> <p align="center">* For optimum performance, mount single antennas as close to vehicle center as possible.</p> <div align="center"> <center> <table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="600"> <tr> <td width="50%" valign="top"> <table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="100%"> <tr> <td> <p align="center"><b>Bandwidth</b></td> <td width="55%"> <p align="center"><img border="0" src="images/tech5.jpg" width="250" height="143"></td> </tr> </table> <p align="left"><b><font size="4">Standing Wave Ratio (SWR)<br> </font></b>The tuning of a signal transmitting antenna is more critical than that of a receive only antenna.  Although we pre-tune all antennas,  on vehicle fine tuning should be performed.</p> <p align="left">An SWR meter tells you how efficiently your antenna is transmitting the signal.  The lower  ...  the better.</p> <p align="center"><img border="0" src="images/tech7.jpg" width="250" height="89"></td> <td width="50%" valign="top"> <p align="center"><img border="0" src="images/tech6.jpg" width="294" height="137"><br> <img border="0" src="images/tech6a.jpg" width="299" height="92"></p> <p align="left"> CoPhased cable has a frequency just like an antenna does.  A mismatched cable length to an antenna can either make tuning easy (6' 0r 18') or impossible (12').  Because we tune all of our antennas to about Channel 1 we recommend you use 18' V-CoPhase harness of RG-59 to achieve a proper match.</td> </tr> </table> </center> </div> <h2 align="center"> </h2> <h2 align="center"><font color="#0000FF"><i>Everhardt Antennas Catalog</i></font></h2> <p align="center">This Everhardt Antennas Catalog is in PDF format and requires Adobe Acrobat Reader to view the files.</p> <p align="center">The catalog pages will open in a new "Window" - Close the "Window" to return to this page</p> <p align="center"> <a target="_blank" href="http://www.adobe.com/products/acrobat/readermain.html">Download the free version from Adobe's Web  site.</a></p> <table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="100%"> <tr> <td width="50%">Magnetic Mounts - CB</td> <td width="50%"><a target="_blank" href="pg1.PDF">Page 1</a>    <a target="_blank" href="pg2.PDF">Page2</a></td> </tr> <tr> <td width="50%">Trunk and Gutter Mounts</td> <td width="50%"><a target="_blank" href="pg3.PDF">Page 3</a></td> </tr> <tr> <td width="50%">Pick "em" Up Truckers<br> Roof/Deck Mounts</td> <td width="50%"><a target="_blank" href="pg4.PDF">Page 4</a></td> </tr> <tr> <td width="50%">Mirror Mount Kits</td> <td width="50%"><a target="_blank" href="pg5.PDF">Page 5</a></td> </tr> <tr> <td width="50%">Master Blaster</td> <td width="50%"><a target="_blank" href="pg6.PDF">Page 6</a></td> </tr> <tr> <td width="50%">Marine Antennas</td> <td width="50%"><a target="_blank" href="pg7.PDF">Page 7</a></td> </tr> <tr> <td width="50%">"No Ground" Antennas</td> <td width="50%"><a target="_blank" href="pg8.PDF">Page 8</a></td> </tr> <tr> <td width="50%">Mobile TV/Scanner</td> <td width="50%"><a target="_blank" href="pg9.PDF">Page 9</a></td> </tr> <tr> <td width="50%">CB Replacement Whips</td> <td width="50%"><a target="_blank" href="pg10.PDF">Page 10</a></td> </tr> <tr> <td width="50%">"Whip-It"/Coax Cable</td> <td width="50%"><a target="_blank" href="pg11.PDF">Page 11</a></td> </tr> <tr> <td width="50%">Accessories</td> <td width="50%"><a target="_blank" href="pg12.PDF">Page 12</a></td> </tr> <tr> <td width="50%"> <p align="center"><font color="#0000FF"><i><b>Tech Talk</b></i></font></td> <td width="50%"> </td> </tr> <tr> <td width="50%">Tuning CB Antennas</td> <td width="50%"><a target="_blank" href="tt1.PDF">Tech Talk 1</a></td> </tr> <tr> <td width="50%">Transmission Pattern<br> Bandwidth<br> Standing Wave Ratio (SWR)<br> Co-Phasing Antennas</td> <td width="50%"><a target="_blank" href="tt2.PDF">Tech Talk 2</a></td> </tr> </table> <p> </p> <p> </p> </body>