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Date: Fri, 29 Jun 2007 12:55:24 +0100
From: "lawrence mayhead" <laurie.mayhead@googlemail.com>
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Subject: Re: LF: Getting QRV on 500kHz from Shetland?
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John says..............."100mW erp on 500kHz might be pushing from this
remote location"
Yes I agree, but it would be a challenge, so worthwhile in my opinion.
Laurie G3AQC
Chichester on the south coast, so could'nt be much further away !

On 29/06/07, John GM4SLV <gm4slv@sighthound.demon.co.uk> wrote:
>
> Hi gang,
>
> I've been following the discussions and reading around on the web for
> the last few weeks, after discovering rather belatedly that OFCOM had
> started issuing permits for 500kHz.
>
> My location is well offshore in the north sea, and some considerable
> distance from the active stations in the UK. Added to this is the fact
> that at this time of year we don't get any "night" at this latitude. I
> have listened around the "band" on a few occasions (eg when I've seen
> postings indicating there's some activity) using a 1m dia tuned MF loop
> I knocked together for the purpose. I've not heard anything yet. Part of
> the problem may also be a slight deafness problem with my AR7030 which
> should soon be rectified when the replacement parts for the front end
> filter & new first mixer IC arrive from AOR. It's currently about 10dB
> less sensitive than it should be after an accident with an antenna
> splitter and in IC706 (!)
>
> I've been following the chat on the reflector, and I take it that there
> is some actual "real time CW QSO" activity and not just QRSS beacons and
> the like?
>
> I've just grabbed a copy of the cct for Jim M0BMU's CW transmitter and
> will start gathering bits together.
>
> At present my only HF antenna is a GP that was originally a 20m 1/4
> wave, with feed point 2m agl, fed against 3 sloping radials. I recently
> added 3 capacity hat wires to drop its resonance to 30m as I prefer that
> band over 20m.
>
> I guess even with some base loading it's going to be a) too short and b)
> lacking in the grounding department?
>
> I can possibly put up an inverted with the top 8m AGL and 40m long for
> TXing, as there's an old electricity pole, unused, about 45m from the
> house. There are no trees to use as supports here! I only have one
> neighbour, who's house is about 60m from mine, for about 2 miles in any
> direction, so EMC shouldn't be a problem!
>
> Does anyone have any feelings as to whether I'm too far from
> civilisation to make this worthwhile? I'm exclusively a QRP CW OP (on
> HF) but 100mW erp on 500kHz might be pushing it from this remote
> location?
>
> Regards,
>
> John GM4SLV
>
> --
> G-GRP-Club 2377, QRP-ARCI 12384, SKCC 3214
> Member : RSGB, ARRL
> Elecraft : K2 #5542 / K1 #1672
> Shetland Islands (EU-012) IP90GG
>
>

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John says...............&quot;100mW erp on 500kHz might be pushing from this remote location&quot;<br>Yes I agree, but it would be a challenge, so worthwhile in my opinion.<br>Laurie G3AQC<br>Chichester on the south coast, so could&#39;nt be much further away !
<br><br><div><span class="gmail_quote">On 29/06/07, <b class="gmail_sendername">John GM4SLV</b> &lt;<a href="mailto:gm4slv@sighthound.demon.co.uk">gm4slv@sighthound.demon.co.uk</a>&gt; wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi gang,<br><br>I&#39;ve been following the discussions and reading around on the web for<br>the last few weeks, after discovering rather belatedly that OFCOM had<br>started issuing permits for 500kHz.<br><br>My location is well offshore in the north sea, and some considerable
<br>distance from the active stations in the UK. Added to this is the fact<br>that at this time of year we don&#39;t get any &quot;night&quot; at this latitude. I<br>have listened around the &quot;band&quot; on a few occasions (eg when I&#39;ve seen
<br>postings indicating there&#39;s some activity) using a 1m dia tuned MF loop<br>I knocked together for the purpose. I&#39;ve not heard anything yet. Part of<br>the problem may also be a slight deafness problem with my AR7030 which
<br>should soon be rectified when the replacement parts for the front end<br>filter &amp; new first mixer IC arrive from AOR. It&#39;s currently about 10dB<br>less sensitive than it should be after an accident with an antenna
<br>splitter and in IC706 (!)<br><br>I&#39;ve been following the chat on the reflector, and I take it that there<br>is some actual &quot;real time CW QSO&quot; activity and not just QRSS beacons and<br>the like?<br><br>I&#39;ve just grabbed a copy of the cct for Jim M0BMU&#39;s CW transmitter and
<br>will start gathering bits together.<br><br>At present my only HF antenna is a GP that was originally a 20m 1/4<br>wave, with feed point 2m agl, fed against 3 sloping radials. I recently<br>added 3 capacity hat wires to drop its resonance to 30m as I prefer that
<br>band over 20m.<br><br>I guess even with some base loading it&#39;s going to be a) too short and b)<br>lacking in the grounding department?<br><br>I can possibly put up an inverted with the top 8m AGL and 40m long for<br>
TXing, as there&#39;s an old electricity pole, unused, about 45m from the<br>house. There are no trees to use as supports here! I only have one<br>neighbour, who&#39;s house is about 60m from mine, for about 2 miles in any
<br>direction, so EMC shouldn&#39;t be a problem!<br><br>Does anyone have any feelings as to whether I&#39;m too far from<br>civilisation to make this worthwhile? I&#39;m exclusively a QRP CW OP (on<br>HF) but 100mW erp on 500kHz might be pushing it from this remote
<br>location?<br><br>Regards,<br><br>John GM4SLV<br><br>--<br>G-GRP-Club 2377, QRP-ARCI 12384, SKCC 3214<br>Member : RSGB, ARRL<br>Elecraft : K2 #5542 / K1 #1672<br>Shetland Islands (EU-012) IP90GG<br><br></blockquote></div>
<br>

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