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Tech Head - The Technology Section
SDR radio, Software Defined Radio
The Aero Thread..
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<blockquote data-quote="Vipersan" data-source="post: 977035" data-attributes="member: 325666"><p>So ..</p><p>this is what I finally settled on ..having tried the Helical antenna on a 60cm offset ...RF linked indoors using RG58 .. (shorter cable run ..)</p><p>Yes it gave results ...and fairly good results too ...approx 7db ..</p><p>but this dropped dramatically to 5db in the rain ...which there was plenty off ..</p><p>So ..I made the decision to get the Dongle close to the helical again ..</p><p>..a guaranteed increase of about 3 or 4 db ...by removing the RF cable linkage and only tranferring digital data indoors ..</p><p>These mk2 dongles are relatively inexpensive so I could afford to tie one to the Helical permanently ...</p><p>Not much more to do on this now ..</p><p>a bit more waterproofing ...and it will become a permanent outdoor fixture at Inmarsat 2-F3 15W ..</p><p>rgds</p><p>VS</p><p></p><p>...and welcome home John ..</p><p>good to hear you are recovering well ..</p><p>rgds</p><p>Evan</p><p>[ATTACH=full]94889[/ATTACH]</p></blockquote><p></p>
[QUOTE="Vipersan, post: 977035, member: 325666"] So .. this is what I finally settled on ..having tried the Helical antenna on a 60cm offset ...RF linked indoors using RG58 .. (shorter cable run ..) Yes it gave results ...and fairly good results too ...approx 7db .. but this dropped dramatically to 5db in the rain ...which there was plenty off .. So ..I made the decision to get the Dongle close to the helical again .. ..a guaranteed increase of about 3 or 4 db ...by removing the RF cable linkage and only tranferring digital data indoors .. These mk2 dongles are relatively inexpensive so I could afford to tie one to the Helical permanently ... Not much more to do on this now .. a bit more waterproofing ...and it will become a permanent outdoor fixture at Inmarsat 2-F3 15W .. rgds VS ...and welcome home John .. good to hear you are recovering well .. rgds Evan [ATTACH=full]94889[/ATTACH] [/QUOTE]
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The Aero Thread..
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