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<blockquote data-quote="jeallen01" data-source="post: 996960" data-attributes="member: 176704">Morning (here anyway)I've just fitted a small 47MHz-2150MHz inline amp just below the Colinear &amp; Discone antennas at the end of the garden, and powered it via a DC inserter (and home built DC filter network to try to eliminate any crap coming from the cheap 12V walwart PSU I used)&nbsp; just behind the SDR module, and the result has effectively been a doubling of the number of aircraft transponders being received (to around 24-25) and of the ranges at which they are (to around 50+ miles or so in all directions).Thus see attached sample screenshot - also seen other planes out&nbsp; between Oxford and Swindon, and it looked like the Northampton area as well - so well worth the effort involved.PS: Thought I had blown the SDR module up this morning when I accidently connected the power inserter the wrong way round so that it fed 14V into the input of that and I could not understand why it was getting warm<img src="https://www.satellites.co.uk/styles/default/xenforo/smilies/sad.png"&nbsp; class="smilie" loading="lazy" alt=":(" title="Sad&nbsp; &nbsp; :(" data-shortname=":(" />! - was NOT a happy chappy until I got everything else sorted out and fired up the PC and so on, to find the SDR unit still working fine<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite18" alt=":-biglaugh" title="bounce laugh&nbsp; &nbsp; :-biglaugh" loading="lazy" data-shortname=":-biglaugh" /></blockquote>

[QUOTE="jeallen01, post: 996960, member: 176704"] Morning (here anyway) I've just fitted a small 47MHz-2150MHz inline amp just below the Colinear & Discone antennas at the end of the garden, and powered it via a DC inserter (and home built DC filter network to try to eliminate any crap coming from the cheap 12V walwart PSU I used) just behind the SDR module, and the result has effectively been a doubling of the number of aircraft transponders being received (to around 24-25) and of the ranges at which they are (to around 50+ miles or so in all directions). Thus see attached sample screenshot - also seen other planes out between Oxford and Swindon, and it looked like the Northampton area as well - so well worth the effort involved. PS: Thought I had blown the SDR module up this morning when I accidently connected the power inserter the wrong way round so that it fed 14V into the input of that and I could not understand why it was getting warm:(! - was NOT a happy chappy until I got everything else sorted out and fired up the PC and so on, to find the SDR unit still working fine:-biglaugh [/QUOTE]

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