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<div>It's kind of interesting to see this discussion. The latest thing in AM broadcasting is MDCL Modulation Dependent Carrier Level. At 0% modulation carrier level is at full power. At 100% modulation carrier is at 50% of full power. It's supposed to save money for high power broadcasters, and does save about $300.00 a month for our 50 KW station WBAP but I haven't noticed all that much of a saving at our 25 KW station KTCK so I guess the jury is still out. The process is supposed to be transparent to the listener and it is basically if you live in a strong signal area but it does become apparent in the out laying areas.</div><div><br></div><div>The Nautel transmitter at WBAP just required a plug and play external controller to be added. The Harris / GatesAir transmitter at KTCK required replacing one board and adding a second board in the control cabinet plus some rewiring of remote control connections.</div><div><br></div><div>Bill AD5OL</div><div><br></div>
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On Sunday, May 20, 2018, 8:04:05 AM CDT, Kenneth G. Gordon <kgordon2006@frontier.com> wrote:
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<div><div dir="ltr">On 19 May 2018 at 23:44, <a shape="rect" href="mailto:jerrylofstead@bellsouth.net" rel="nofollow" target="_blank">jerrylofstead@bellsouth.net</a> wrote:<br clear="none"><br clear="none">> Oh yes! Controlled carrier the RF level varies at a voice rate. DSB SC(supresed carier) was <br clear="none">> produced by putting two tubes in push-push... usually push pull grids and paralell plates.<br clear="none"><br clear="none"><br clear="none"><br clear="none"><br clear="none">vy 73,<br clear="none"><br clear="none">Ken W7EKB<br clear="none"><br clear="none">---<br clear="none">This email has been checked for viruses by Avast antivirus software.<br clear="none"><a shape="rect" href="https://www.avast.com/antivirus" rel="nofollow" target="_blank">https://www.avast.com/antivirus</a><div class="ydpb6a32916yqt2087218178" id="ydpb6a32916yqtfd82757"><br clear="none"><br clear="none">_______________________________________________<br clear="none">Heath mailing list<br clear="none"><a shape="rect" href="mailto:Heath@puck.nether.net" rel="nofollow" target="_blank">Heath@puck.nether.net</a><br clear="none"><a shape="rect" href="https://puck.nether.net/mailman/listinfo/heath" rel="nofollow" target="_blank">https://puck.nether.net/mailman/listinfo/heath</a></div></div></div>
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