<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Doppler<div class=""><br class=""></div><div class="">The ISS starts at 145.827 145.825 145.823 </div><div class=""><br class=""></div><div class="">Andrew </div><div class=""><br class=""></div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On 30 Aug 2017, at 8:33 pm, Mark Jessop <<a href="mailto:lenniethelemming@gmail.com" class="">lenniethelemming@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">I can reliably get into the ISS digipeater with 5 watts from my handheld - into a 3-element handheld yagi. (and if I remember to set the correct path...)<div class="">I also managed to get into the LilacSat-1 FM-to-Codec2 transponder using 50mW of FM into the same antenna. <br class=""><div class=""><br class=""></div><div class="">Yes, if you are using an antenna not really designed for satellite operations (pointable, or at least circularly polarised to get over polarisation mismatch issues), then you will need higher powers to make up for the losses.</div><div class=""><br class=""></div><div class="">There have been rumblings of putting a SatGate into a site on top of the Adelaide hills, but it hasn't happened yet. I can't guarantee mine is going to be that effective, so the more the merrier I think.</div><div class=""><br class=""></div><div class="">73</div><div class="">Mark VK5QI</div><div class=""><br class=""></div><div class=""><br class=""></div></div></div><div class="gmail_extra"><br class=""><div class="gmail_quote">On Wed, Aug 30, 2017 at 7:55 PM, Terry, VK5ATN <span dir="ltr" class=""><<a href="mailto:vk5atn@internode.on.net" target="_blank" class="">vk5atn@internode.on.net</a>></span> wrote:<br class=""><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div class="m_687715265825563511moz-cite-prefix">On 30/08/2017 3:59 PM, Andrew Rich
wrote:<br class="">
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<pre class="">Anyone running sat gates for ISS / NO-84 ?
Andrew VK4TEC
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Not yet, but in the apparent absence of a working Igate in South
Australia I'm thinking about it- probably with a <a href="http://microsat.com.pl/product_info.php?currency=USD&products_id=100&language=en" target="_blank" class="">Microsat
WX3in1</a> .<br class="">
<br class="">
At present my efforts to have a beacon successfully digipeated from
ISS have relied on the Igates in WA or VK3KAW in Victoria (who seems
to be off air at present anyway). The optimum orbit for a
successful login on findu ISS page using the generous facility
offered by the owners of these stations largely for the enjoyment of
others are complex, and it's not as easy as it looks from a quick
and simplistic glance at Orbitron or any other program. <br class="">
<br class="">
In my experience, and remembering the situation I have described
above, I've never had any success with less than 25 watts into a 1/4
wave vertical, and I've been doing this for a few years now. If
you can reliably get a beacon to ISS with five or ten watts when the
bird is somewhere between 1,500 and 2,000 KM away then I'm
interested. <br class="">
<br class="">
73<br class="">
Terry<br class="">
VK5ATN<br class="">
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