<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:13px"><div id="yui_3_16_0_ym19_1_1526994565027_21851"><span>Guys,</span></div><div id="yui_3_16_0_ym19_1_1526994565027_21951"><span id="yui_3_16_0_ym19_1_1526994565027_21950">You are continuing the confusion. SSB does not imply no carrier, but the term has been used for decades so everyone believes it means no carrier. <br></span></div><div id="yui_3_16_0_ym19_1_1526994565027_22362"><span id="yui_3_16_0_ym19_1_1526994565027_21950">Dale, if you look at the transmit signal with a simple scope you will not be able to tell if the carrier is absent. You will see an RF signal with audio impressed on it. If you look at the signal with spectrum analyzer or any scope capable of displaying in the frequency domain, then you will see the absence of a carrier and the sideband.<br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1526994565027_22459"><span id="yui_3_16_0_ym19_1_1526994565027_21950">Mike, I agree that one sideband (with or without carrier) is more efficient than full AM DSB with carrier. However, SSB with no carrier (SSBSC) still needs to have a carrier reinjected at the receiver to demodulate the audio. <br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1526994565027_22971"><span id="yui_3_16_0_ym19_1_1526994565027_21950">Howie, certain transmitters can have carrier and opposite sideband when close to the transmitter. This more depends on the method used to generate the sideband and how effective the shielding and filtering of the transmitter has been implemented. In a balanced modulator where the output then passes through a bandpass filter, the opposite sideband and any carrier is at a very low level and generally at the i.f. frequency of the radio. It was quite common for old radios to use a first i.f. of around 3.5 MHz. That was due to the tried and true designs of the day and the ability to maintain stability and obtain common parts like crystal and mechanical filters. So yes, a 75M receiver would hear both sidebands and carrier if tuned to the i.f. frequency of the transmitter using a VFO around 3.5 MHz.<br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1526994565027_29590"><span id="yui_3_16_0_ym19_1_1526994565027_21950">While I don't hold Wikipedia as a fully credible source, the article on SSB does have a nice discussion outlining reduced carrier, suppressed carrier and no carrier with reference to sideband communications. Please be aware that SSB modulation was first patented in 1915 and used by the Navy for experimentation shortly after that. Hams really started using SSBSC after WWII but it became big in the 50's. <br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1526994565027_30923"><span id="yui_3_16_0_ym19_1_1526994565027_21950">Al WB9UVJ</span></div> <div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 13px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"><font size="2" face="Arial"> On Monday, May 21, 2018 4:28 PM, "heath-request@puck.nether.net" <heath-request@puck.nether.net> wrote:<br></font></div> <br><br> <div class="y_msg_container"><div dir="ltr">Send Heath mailing list submissions to<br></div><div dir="ltr"> <a ymailto="mailto:heath@puck.nether.net" href="mailto:heath@puck.nether.net">heath@puck.nether.net</a><br></div><div dir="ltr"><br></div><div dir="ltr">To subscribe or unsubscribe via the World Wide Web, visit<br></div><div dir="ltr"> <a href="https://puck.nether.net/mailman/listinfo/heath" target="_blank">https://puck.nether.net/mailman/listinfo/heath</a><br></div><div dir="ltr">or, via email, send a message with subject or body 'help' to<br></div><div dir="ltr"> <a ymailto="mailto:heath-request@puck.nether.net" href="mailto:heath-request@puck.nether.net">heath-request@puck.nether.net</a><br></div><div dir="ltr"><br></div><div dir="ltr">You can reach the person managing the list at<br></div><div dir="ltr"> <a ymailto="mailto:heath-owner@puck.nether.net" href="mailto:heath-owner@puck.nether.net">heath-owner@puck.nether.net</a><br></div><div dir="ltr"><br></div><div dir="ltr">When replying, please edit your Subject line so it is more specific<br></div><div dir="ltr">than "Re: Contents of Heath digest..."<br></div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr">Today's Topics:<br></div><div dir="ltr"><br></div><div dir="ltr"> 1. Re: WB9UVJ (Dale Putnam)<br></div><div dir="ltr"> 2. SSb (Mike)<br></div><div dir="ltr"> 3. Re: WB9UVJ (howard holden)<br></div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr">----------------------------------------------------------------------<br></div><div dir="ltr"><br></div><div dir="ltr">Message: 1<br></div><div dir="ltr">Date: Mon, 21 May 2018 18:20:36 +0000<br></div><div dir="ltr">From: Dale Putnam <<a ymailto="mailto:daleputnam@hotmail.com" href="mailto:daleputnam@hotmail.com">daleputnam@hotmail.com</a>><br></div><div dir="ltr">To: Heath <<a ymailto="mailto:Heath@puck.nether.net" href="mailto:Heath@puck.nether.net">Heath@puck.nether.net</a>>, Mike <<a ymailto="mailto:MLF42@Q.com" href="mailto:MLF42@Q.com">MLF42@Q.com</a>><br></div><div dir="ltr">Subject: Re: [Heath] WB9UVJ<br></div><div dir="ltr">Message-ID:<br></div><div dir="ltr"> <<a ymailto="mailto:CY4PR22MB064827753FDBBBFB28CDB732D0950@CY4PR22MB0648.namprd22.prod.outlook.com" href="mailto:CY4PR22MB064827753FDBBBFB28CDB732D0950@CY4PR22MB0648.namprd22.prod.outlook.com">CY4PR22MB064827753FDBBBFB28CDB732D0950@CY4PR22MB0648.namprd22.prod.outlook.com</a>><br></div><div dir="ltr"> <br></div><div dir="ltr">Content-Type: text/plain; charset="iso-8859-1"<br></div><div dir="ltr"><br></div><div dir="ltr">NO.. SSB is single sideband . That's all.. nothing more nothing less.<br></div><div dir="ltr"><br></div><div dir="ltr">All modulation, no carrier.<br></div><div dir="ltr"><br></div><div dir="ltr">Look at the tx signal with a scope.<br></div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr">Have a great day,<br></div><div dir="ltr">--... ...-- Dale - WC7S in Wy<br></div><div dir="ltr"><br></div><div dir="ltr">"Actions speak louder than words"<br></div><div dir="ltr">1856 - Abraham Lincoln<br></div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr">________________________________<br></div><div dir="ltr">From: Heath <<a ymailto="mailto:heath-bounces@puck.nether.net" href="mailto:heath-bounces@puck.nether.net">heath-bounces@puck.nether.net</a>> on behalf of Mike <<a ymailto="mailto:MLF42@Q.com" href="mailto:MLF42@Q.com">MLF42@Q.com</a>><br></div><div dir="ltr">Sent: Monday, May 21, 2018 9:35 AM<br></div><div dir="ltr">To: Heath<br></div><div dir="ltr">Subject: [Heath] WB9UVJ<br></div><div dir="ltr"><br></div><div dir="ltr">Al...<br></div><div dir="ltr"><br></div><div dir="ltr">You say "SSB is one sideband with carrier. Only one sideband is needed for audio demodulation. This mode also reduces input power"<br></div><div dir="ltr"><br></div><div dir="ltr">SSB is one sideband WITH CARRIER...Huh?<br></div><div dir="ltr"><br></div><div dir="ltr">Mike AA7WU<br></div><div dir="ltr"><br></div><div dir="ltr">[<a href="https://ipmcdn.avast.com/images/icons/icon-envelope-tick-green-avg-v1.png" target="_blank">https://ipmcdn.avast.com/images/icons/icon-envelope-tick-green-avg-v1.png</a>]<<a href="http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient" target="_blank">http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient</a>> Virus-free. www.avg.com<<a href="http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient" target="_blank">http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient</a>><br></div><div dir="ltr">-------------- next part --------------<br></div><div dir="ltr">An HTML attachment was scrubbed...<br></div><div dir="ltr">URL: <<a href="https://puck.nether.net/pipermail/heath/attachments/20180521/a33d8ca5/attachment-0001.html" target="_blank">https://puck.nether.net/pipermail/heath/attachments/20180521/a33d8ca5/attachment-0001.html</a>><br></div><div dir="ltr"><br></div><div dir="ltr">------------------------------<br></div><div dir="ltr"><br></div><div dir="ltr">Message: 2<br></div><div dir="ltr">Date: Mon, 21 May 2018 18:29:18 +0000<br></div><div dir="ltr">From: Mike <<a ymailto="mailto:MLF42@Q.com" href="mailto:MLF42@Q.com">MLF42@Q.com</a>><br></div><div dir="ltr">To: Heath <<a ymailto="mailto:Heath@puck.nether.net" href="mailto:Heath@puck.nether.net">Heath@puck.nether.net</a>><br></div><div dir="ltr">Subject: [Heath] SSb<br></div><div dir="ltr">Message-ID: <<a ymailto="mailto:em2409c887-67ac-4cdb-a883-6a79c91bedc8@mike-pc" href="mailto:em2409c887-67ac-4cdb-a883-6a79c91bedc8@mike-pc">em2409c887-67ac-4cdb-a883-6a79c91bedc8@mike-pc</a>><br></div><div dir="ltr">Content-Type: text/plain; charset="utf-8"; Format="flowed"<br></div><div dir="ltr"><br></div><div dir="ltr">So it would appear "SSB is one side band with a carrier" was a typo....<br></div><div dir="ltr"><br></div><div dir="ltr">---<br></div><div dir="ltr">This email has been checked for viruses by AVG.<br></div><div dir="ltr"><a href="https://www.avg.com/" target="_blank">https://www.avg.com</a><br></div><div dir="ltr">-------------- next part --------------<br></div><div dir="ltr">An HTML attachment was scrubbed...<br></div><div dir="ltr">URL: <<a href="https://puck.nether.net/pipermail/heath/attachments/20180521/41b1fc16/attachment-0001.html" target="_blank">https://puck.nether.net/pipermail/heath/attachments/20180521/41b1fc16/attachment-0001.html</a>><br></div><div dir="ltr"><br></div><div dir="ltr">------------------------------<br></div><div dir="ltr"><br></div><div dir="ltr">Message: 3<br></div><div dir="ltr">Date: Mon, 21 May 2018 21:22:47 +0000<br></div><div dir="ltr">From: howard holden <<a ymailto="mailto:holden7471@msn.com" href="mailto:holden7471@msn.com">holden7471@msn.com</a>><br></div><div dir="ltr">To: Dale Putnam <<a ymailto="mailto:daleputnam@hotmail.com" href="mailto:daleputnam@hotmail.com">daleputnam@hotmail.com</a>><br></div><div dir="ltr">Cc: Heath <<a ymailto="mailto:Heath@puck.nether.net" href="mailto:Heath@puck.nether.net">Heath@puck.nether.net</a>>, Mike <<a ymailto="mailto:MLF42@Q.com" href="mailto:MLF42@Q.com">MLF42@Q.com</a>><br></div><div dir="ltr">Subject: Re: [Heath] WB9UVJ<br></div><div dir="ltr">Message-ID:<br></div><div dir="ltr"> <<a ymailto="mailto:BL2PR06MB22904601FD79CCBEB8E48C22C4950@BL2PR06MB2290.namprd06.prod.outlook.com" href="mailto:BL2PR06MB22904601FD79CCBEB8E48C22C4950@BL2PR06MB2290.namprd06.prod.outlook.com">BL2PR06MB22904601FD79CCBEB8E48C22C4950@BL2PR06MB2290.namprd06.prod.outlook.com</a>><br></div><div dir="ltr"> <br></div><div dir="ltr">Content-Type: text/plain; charset="utf-8"<br></div><div dir="ltr"><br></div><div dir="ltr">Not really true. The carrier (and unwanted side band) are suppressed (a lot), but not eliminated. The carrier especially can be heard at very close range. Suppression is listed on most transmitter spec sheets.<br></div><div dir="ltr"><br></div><div dir="ltr">Howie WB2AWQ<br></div><div dir="ltr"><br></div><div dir="ltr">Sent from my iPhone<br></div><div dir="ltr"><br></div><div dir="ltr">On May 21, 2018, at 12:02 PM, Dale Putnam <<a ymailto="mailto:daleputnam@hotmail.com" href="mailto:daleputnam@hotmail.com">daleputnam@hotmail.com</a><mailto:<a ymailto="mailto:daleputnam@hotmail.com" href="mailto:daleputnam@hotmail.com">daleputnam@hotmail.com</a>>> wrote:<br></div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr">NO.. SSB is single sideband . That's all.. nothing more nothing less.<br></div><div dir="ltr"><br></div><div dir="ltr">All modulation, no carrier.<br></div><div dir="ltr"><br></div><div dir="ltr">Look at the tx signal with a scope.<br></div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr">Have a great day,<br></div><div dir="ltr">--... ...-- Dale - WC7S in Wy<br></div><div dir="ltr"><br></div><div dir="ltr">"Actions speak louder than words"<br></div><div dir="ltr">1856 - Abraham Lincoln<br></div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr">________________________________<br></div><div dir="ltr"><br></div><div dir="ltr">[<a href="https://ipmcdn.avast.com/images/icons/icon-envelope-tick-green-avg-v1.png" target="_blank">https://ipmcdn.avast.com/images/icons/icon-envelope-tick-green-avg-v1.png</a>]<<a href="https://nam03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.avg.com%2Femail-signature%3Futm_medium%3Demail%26utm_source%3Dlink%26utm_campaign%3Dsig-email%26utm_content%3Demailclient&data=02%7C01%7C%7Cf6473f29d7a84add138c08d5bf4d726e%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636625261710183958&sdata=VCLg7MoTmAOFW0%2Ffw7Lvzgf9qyiSzkBiLZoYG51FNbA%3D&reserved=0" target="_blank">https://nam03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.avg.com%2Femail-signature%3Futm_medium%3Demail%26utm_source%3Dlink%26utm_campaign%3Dsig-email%26utm_content%3Demailclient&data=02%7C01%7C%7Cf6473f29d7a84add138c08d5bf4d726e%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636625261710183958&sdata=VCLg7MoTmAOFW0%2Ffw7Lvzgf9qyiSzkBiLZoYG51FNbA%3D&reserved=0</a>><br></div><div dir="ltr"><br></div><div dir="ltr">-------------- next part --------------<br></div><div dir="ltr">An HTML attachment was scrubbed...<br></div><div dir="ltr">URL: <<a href="https://puck.nether.net/pipermail/heath/attachments/20180521/ac4dfaca/attachment.html" target="_blank">https://puck.nether.net/pipermail/heath/attachments/20180521/ac4dfaca/attachment.html</a>><br></div><div dir="ltr"><br></div><div dir="ltr">------------------------------<br></div><div dir="ltr"><br></div><div dir="ltr">Subject: Digest Footer<br></div><div dir="ltr"><br></div><div dir="ltr">_______________________________________________<br></div><div dir="ltr">Heath mailing list<br></div><div dir="ltr"><a ymailto="mailto:Heath@puck.nether.net" href="mailto:Heath@puck.nether.net">Heath@puck.nether.net</a><br></div><div dir="ltr"><a href="https://puck.nether.net/mailman/listinfo/heath" target="_blank">https://puck.nether.net/mailman/listinfo/heath</a><br></div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr">------------------------------<br></div><div dir="ltr"><br></div><div dir="ltr">End of Heath Digest, Vol 89, Issue 12<br></div><div dir="ltr">*************************************<br></div><br><br></div> </div> </div> </div></div></body></html>