Body
MickI don't know a lot about RF, though I am an advanced Canadian Ham.I managed to keep a schedule with another vessel, on 80 meters, that was in the South Pacific, while I was in the Eastern Caribean, using a hundred watt ICOM 735 and about a 65 ft long wire antenna strung in the rigging, with a Diwai mannual tuner.Time of day, sun spots, and Russian 1000watt rude fishing boats did play a factor on our weak signals.Cheers Warren
Sent from Yahoo Mail on Android
On Wed, Jun 6, 2018 at 12:19 PM, [email protected] [EVGRAY]<[email protected]> wrote:
https://www.electronics-notes.com/articles/ham_radio/amateur-propagation/moonbounce-propagation-eme.php
Here is a link for ham radio folk about EME or moonbounce radio. The path loss in best case scenarios is very high.
Can someone who knows more RF electronics theory such as Ole or Hector please comment as to how this is overcome with 1000 watt input transmitter when the maximum theoretical S/N ratio and 252 db PL should require transmitters larger than AM radio stations.
I must be missing something. Also checking the amateur radio sites for an answer.
Thanks,
Mick
#yiv9555252074 #yiv9555252074 -- #yiv9555252074ygrp-mkp {border:1px solid #d8d8d8;font-family:Arial;margin:10px 0;padding:0 10px;}#yiv9555252074 #yiv9555252074ygrp-mkp hr {border:1px solid #d8d8d8;}#yiv9555252074 #yiv9555252074ygrp-mkp #yiv9555252074hd {color:#628c2a;font-size:85%;font-weight:700;line-height:122%;margin:10px 0;}#yiv9555252074 #yiv9555252074ygrp-mkp #yiv9555252074ads {margin-bottom:10px;}#yiv9555252074 #yiv9555252074ygrp-mkp .yiv9555252074ad {padding:0 0;}#yiv9555252074 #yiv9555252074ygrp-mkp .yiv9555252074ad p {margin:0;}#yiv9555252074 #yiv9555252074ygrp-mkp .yiv9555252074ad a {color:#0000ff;text-decoration:none;}#yiv9555252074 #yiv9555252074ygrp-sponsor #yiv9555252074ygrp-lc {font-family:Arial;}#yiv9555252074 #yiv9555252074ygrp-sponsor #yiv9555252074ygrp-lc #yiv9555252074hd {margin:10px 0px;font-weight:700;font-size:78%;line-height:122%;}#yiv9555252074 #yiv9555252074ygrp-sponsor #yiv9555252074ygrp-lc .yiv9555252074ad {margin-bottom:10px;padding:0 0;}#yiv9555252074 #yiv9555252074actions {font-family:Verdana;font-size:11px;padding:10px 0;}#yiv9555252074 #yiv9555252074activity {background-color:#e0ecee;float:left;font-family:Verdana;font-size:10px;padding:10px;}#yiv9555252074 #yiv9555252074activity span {font-weight:700;}#yiv9555252074 #yiv9555252074activity span:first-child {text-transform:uppercase;}#yiv9555252074 #yiv9555252074activity span a {color:#5085b6;text-decoration:none;}#yiv9555252074 #yiv9555252074activity span span {color:#ff7900;}#yiv9555252074 #yiv9555252074activity span .yiv9555252074underline {text-decoration:underline;}#yiv9555252074 .yiv9555252074attach {clear:both;display:table;font-family:Arial;font-size:12px;padding:10px 0;width:400px;}#yiv9555252074 .yiv9555252074attach div a {text-decoration:none;}#yiv9555252074 .yiv9555252074attach img {border:none;padding-right:5px;}#yiv9555252074 .yiv9555252074attach label {display:block;margin-bottom:5px;}#yiv9555252074 .yiv9555252074attach label a {text-decoration:none;}#yiv9555252074 blockquote {margin:0 0 0 4px;}#yiv9555252074 .yiv9555252074bold {font-family:Arial;font-size:13px;font-weight:700;}#yiv9555252074 .yiv9555252074bold a {text-decoration:none;}#yiv9555252074 dd.yiv9555252074last p a {font-family:Verdana;font-weight:700;}#yiv9555252074 dd.yiv9555252074last p span {margin-right:10px;font-family:Verdana;font-weight:700;}#yiv9555252074 dd.yiv9555252074last p span.yiv9555252074yshortcuts {margin-right:0;}#yiv9555252074 div.yiv9555252074attach-table div div a {text-decoration:none;}#yiv9555252074 div.yiv9555252074attach-table {width:400px;}#yiv9555252074 div.yiv9555252074file-title a, #yiv9555252074 div.yiv9555252074file-title a:active, #yiv9555252074 div.yiv9555252074file-title a:hover, #yiv9555252074 div.yiv9555252074file-title a:visited {text-decoration:none;}#yiv9555252074 div.yiv9555252074photo-title a, #yiv9555252074 div.yiv9555252074photo-title a:active, #yiv9555252074 div.yiv9555252074photo-title a:hover, #yiv9555252074 div.yiv9555252074photo-title a:visited {text-decoration:none;}#yiv9555252074 div#yiv9555252074ygrp-mlmsg #yiv9555252074ygrp-msg p a span.yiv9555252074yshortcuts {font-family:Verdana;font-size:10px;font-weight:normal;}#yiv9555252074 .yiv9555252074green {color:#628c2a;}#yiv9555252074 .yiv9555252074MsoNormal {margin:0 0 0 0;}#yiv9555252074 o {font-size:0;}#yiv9555252074 #yiv9555252074photos div {float:left;width:72px;}#yiv9555252074 #yiv9555252074photos div div {border:1px solid #666666;min-height:62px;overflow:hidden;width:62px;}#yiv9555252074 #yiv9555252074photos div label {color:#666666;font-size:10px;overflow:hidden;text-align:center;white-space:nowrap;width:64px;}#yiv9555252074 #yiv9555252074reco-category {font-size:77%;}#yiv9555252074 #yiv9555252074reco-desc {font-size:77%;}#yiv9555252074 .yiv9555252074replbq {margin:4px;}#yiv9555252074 #yiv9555252074ygrp-actbar div a:first-child {margin-right:2px;padding-right:5px;}#yiv9555252074 #yiv9555252074ygrp-mlmsg {font-size:13px;font-family:Arial, helvetica, clean, sans-serif;}#yiv9555252074 #yiv9555252074ygrp-mlmsg table {font-size:inherit;font:100%;}#yiv9555252074 #yiv9555252074ygrp-mlmsg select, #yiv9555252074 input, #yiv9555252074 textarea {font:99% Arial, Helvetica, clean, sans-serif;}#yiv9555252074 #yiv9555252074ygrp-mlmsg pre, #yiv9555252074 code {font:115% monospace;}#yiv9555252074 #yiv9555252074ygrp-mlmsg * {line-height:1.22em;}#yiv9555252074 #yiv9555252074ygrp-mlmsg #yiv9555252074logo {padding-bottom:10px;}#yiv9555252074 #yiv9555252074ygrp-msg p a {font-family:Verdana;}#yiv9555252074 #yiv9555252074ygrp-msg p#yiv9555252074attach-count span {color:#1E66AE;font-weight:700;}#yiv9555252074 #yiv9555252074ygrp-reco #yiv9555252074reco-head {color:#ff7900;font-weight:700;}#yiv9555252074 #yiv9555252074ygrp-reco {margin-bottom:20px;padding:0px;}#yiv9555252074 #yiv9555252074ygrp-sponsor #yiv9555252074ov li a {font-size:130%;text-decoration:none;}#yiv9555252074 #yiv9555252074ygrp-sponsor #yiv9555252074ov li {font-size:77%;list-style-type:square;padding:6px 0;}#yiv9555252074 #yiv9555252074ygrp-sponsor #yiv9555252074ov ul {margin:0;padding:0 0 0 8px;}#yiv9555252074 #yiv9555252074ygrp-text {font-family:Georgia;}#yiv9555252074 #yiv9555252074ygrp-text p {margin:0 0 1em 0;}#yiv9555252074 #yiv9555252074ygrp-text tt {font-size:120%;}#yiv9555252074 #yiv9555252074ygrp-vital ul li:last-child {border-right:none !important;}#yiv9555252074