<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">I have never used the ‘300. Over the years I have owned many of the Japanese ground planes. The reason I have owned many of them, is that that develop very high SWR - like 10:1 - and have to be replaced. Really, none of them are very good. The two piece antennas, like the X300 are the worst. Those joints just have an affinity for corrosion. - no matter how well you seal them or protect them. All the Jap antennas seem to go bad after a few years - whether or not they are out in the weather or being used. They will go bad, just sitting in the corner of your garage. <div class=""><br class=""></div><div class="">Some years ago, I had a 23 cm Diamond ground plane, on my repeater. When the antenna went bad, it took a $1K PA, with it. I only use Jap base station antennas, when I have no alternative. <div class=""><br class=""></div><div class="">Buddy WB4OMG</div><div class=""><br class=""></div><div class=""><div><blockquote type="cite" class=""><div class=""><font color="#000000" class="">On Dec 26, 2017, at 1:39 PM, Jim Stewart <a href="mailto:w4xds@outlook.com" class="">w4xds@outlook.com</a> [LakelandARC] <<a href="mailto:LakelandARC@yahoogroups.com" class="">LakelandARC@yahoogroups.com</a>> wrote:</font></div><font color="#000000" class=""><br class="Apple-interchange-newline"></font><div class=""><div id="ygrp-mlmsg" style="font-size: 13px; font-family: Arial, helvetica, clean, sans-serif; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); position: relative;" class=""><div id="ygrp-msg" style="line-height: 1.22em; z-index: 1;" class=""><div id="ygrp-text" style="line-height: 1.22em; font-family: Georgia;" class=""><div style="line-height: 1.22em; margin: 0px 0px 1em;" class=""><font color="#000000" class=""><br class="webkit-block-placeholder"></font></div><div dir="auto" style="line-height: 1.22em;" class=""><font color="#000000" class="">A friend of mine has an almost new Diamond X300 that he said he would sell me cheap. Anyone using or or has used this antenna? Reviews are sort of so-so on it.</font><div dir="auto" style="line-height: 1.22em;" class=""><font color="#000000" class=""><br style="line-height: 1.22em;" class=""></font></div><div dir="auto" style="line-height: 1.22em;" class=""><font color="#000000" class="">Thanks.<br style="line-height: 1.22em;" class=""><br style="line-height: 1.22em;" class=""></font><div data="gmail_signature" dir="auto" style="line-height: 1.22em;" class=""><font color="#000000" class="">Jim<br style="line-height: 1.22em;" class=""><br style="line-height: 1.22em;" class="">W4XDS/WQOF877<br style="line-height: 1.22em;" class=""></font></div></div></div></div></div></div></div></blockquote></div><br class=""></div></div></body></html>