<div dir="ltr"><table width="100%" border="0" cellspacing="0" cellpadding="0" style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:medium"><tbody style="box-sizing:border-box"><tr style="box-sizing:border-box"><td style="box-sizing:border-box"><div id="gmail-story" style="box-sizing:border-box;width:618.4px;font-size:16px;height:auto;float:left"><h1 style="box-sizing:border-box;font-size:16pt">Ham radio 600W broadband HF amplifier</h1><p style="box-sizing:border-box"><strong style="box-sizing:border-box">Dan Maloney KC1DJT</strong> writes on Hackaday about a 600W broadband HF amplifier using affordable LDMOS devices<br style="box-sizing:border-box"><br style="box-sizing:border-box">Typically, amateur radio operators use the minimum power needed to accomplish a contact. That’s just part of being a good spectrum citizen, and well-earned bragging rights go to those who make transcontinental contacts on the power coming from a coin cell. But sometimes quantity has a quality all its own, and getting more power into the ether is what the contact requires. That’s where builds such as this well-engineered 600W broadband RF amplifier come into play.<br style="box-sizing:border-box"><br style="box-sizing:border-box">See Dan&#39;s report and watch the video at<br style="box-sizing:border-box"><a href="https://hackaday.com/2019/11/07/well-engineered-rf-amplifier-powers-ham-radio-contacts/" target="_blank" style="box-sizing:border-box;color:rgb(0,51,102);text-decoration-line:none">https://hackaday.com/2019/11/07/well-engineered-rf-amplifier-powers-ham-radio-contacts/</a><br style="box-sizing:border-box"><br style="box-sizing:border-box">Original article by Razvan on the QRP Blog at<br style="box-sizing:border-box"><a href="https://qrpblog.com/2019/10/a-600w-broadband-hf-amplifier-using-affordable-ldmos-devices/" target="_blank" style="box-sizing:border-box;color:rgb(0,51,102);text-decoration-line:none">https://qrpblog.com/2019/10/a-600w-broadband-hf-amplifier-using-affordable-ldmos-devices/</a></p></div></td></tr></tbody></table></div>