<html><div style='background-color:'><DIV>
<P>Now that the 136 khz idea is down the scupper, why not try to get possession of</P>
<P>the old merchant marine MF band (400-515 khz)? Since CW at sea is no longer a fact,</P>
<P>that band should be up for grabs (considering that the NDB's are also a dying breed).</P>
<P>As an ex-merchant marine RO, I can attest to the fact that this band is more than</P>
<P>able to be used for trans-Atlantic and other DX use. Also, there should be lots of</P>
<P>commercial (MacKay & RMCA, et. al.) gear on the scrap heaps of seaports.<BR><BR></P></DIV>
<DIV></DIV>>From: lf-request@amrad.org
<DIV></DIV>>Reply-To: lf@amrad.org
<DIV></DIV>>To: lf@amrad.org
<DIV></DIV>>Subject: lf Digest, Vol 3, Issue 7
<DIV></DIV>>Date: Sun, 18 May 2003 12:00:43 -0500
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<DIV></DIV>>Today's Topics:
<DIV></DIV>>
<DIV></DIV>> 1. Re: [Fwd: LF: No US Ham Band] (Andre Kesteloot)
<DIV></DIV>>
<DIV></DIV>>
<DIV></DIV>>----------------------------------------------------------------------
<DIV></DIV>>
<DIV></DIV>>Message: 1
<DIV></DIV>>Date: Sat, 17 May 2003 16:12:14 -0400
<DIV></DIV>>From: Andre Kesteloot <ANDRE.KESTELOOT@VERIZON.NET>
<DIV></DIV>>Subject: Re: [Lf] [Fwd: LF: No US Ham Band]
<DIV></DIV>>To: Gary Peterson <GLPETERSON@TFCBOOKS.COM>
<DIV></DIV>>Cc: AMRAD Tacos <TACOS@AMRAD.ORG>
<DIV></DIV>>Message-ID: <3EC6979E.1030508@verizon.net>
<DIV></DIV>>Content-Type: text/plain; charset="iso-8859-1"
<DIV></DIV>>
<DIV></DIV>>Gary Peterson wrote:
<DIV></DIV>>
<DIV></DIV>> > I understand that at one point a 73 kHz shared allocation was being
<DIV></DIV>> > talked about and that UK hams were authorized to use that band for a
<DIV></DIV>> > while, back in 1996. Do you think the ARRL would consider petitioning
<DIV></DIV>> > the FCC for ham privileges between 71.6-74.4 kHz?
<DIV></DIV>> >
<DIV></DIV>> > I know some fixed European stations have frequency allocations in that
<DIV></DIV>> > area. Are there PLC concerns associated with that portion of the
<DIV></DIV>> > spectrum as well?
<DIV></DIV>> >
<DIV></DIV>>
<DIV></DIV>>Hello Gary,
<DIV></DIV>>Yes the 73 kHz band is still in use in the UK but, as I understand it,
<DIV></DIV>>is due to be phased out in the near future. As far as I know, no new
<DIV></DIV>>user may be authorized to use that band in the UK.
<DIV></DIV>>One of the early advantages of 73 kHz was that one could use regular
<DIV></DIV>>high power Hi-Fi audio amplifiers whose bandwidth would easily extend
<DIV></DIV>>that high.
<DIV></DIV>>Now that we better control the problem of building transmitters with
<DIV></DIV>>cheap Power MosFETs, that advantage has really disappeared.
<DIV></DIV>>The problems of radiating any kind of power at all at 73 kHz are a good
<DIV></DIV>>deal worse than at 136 kHz, and I would not see any advantage to that
<DIV></DIV>>band. One of the challenges that motivated us was the idea of
<DIV></DIV>>trans-atlantic QSOs on 136 kHz. That has now been effectively killed by
<DIV></DIV>>our dear FCC wizards.
<DIV></DIV>>As far as the PLCs are concerned, you understand, I am sure, that they
<DIV></DIV>>do not have any privilege on 136 either. They are secondary users. I
<DIV></DIV>>have no idea whether they have equipment on 73, as they would not even
<DIV></DIV>>tell us the frequencies they use on the LF band
<DIV></DIV>>73
<DIV></DIV>>André N4ICK
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