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Like Beetle said above the best place for a preamp is at the antenna feedpoint. Once a signal falls below the noise floor of your receiver or preamp it cannot be recovered. By placing a preamp at the antenna end of the cable you eliminate the losses of the cable and have a stronger signal for the preamp to work with.Having said that I did run a preamp at the shack end for quite some time and it worked great HOWEVER I had a relatively short run of LDF4-50 heliax cable and the losses were next to nothing even at 2m amounting to less than 1 dB so it was virtually like the preamp was at the feedpoint. I live in a rural area where noise levels are very low so there was zero noise pickup on the coax line as well. That is all gone now but I look forward to getting it all back bigger and better than ever in the summer.

[QUOTE="Captain Kilowatt, post: 543027, member: 39"] Like Beetle said above the best place for a preamp is at the antenna feedpoint. Once a signal falls below the noise floor of your receiver or preamp it cannot be recovered. By placing a preamp at the antenna end of the cable you eliminate the losses of the cable and have a stronger signal for the preamp to work with.Having said that I did run a preamp at the shack end for quite some time and it worked great HOWEVER I had a relatively short run of LDF4-50 heliax cable and the losses were next to nothing even at 2m amounting to less than 1 dB so it was virtually like the preamp was at the feedpoint. I live in a rural area where noise levels are very low so there was zero noise pickup on the coax line as well. That is all gone now but I look forward to getting it all back bigger and better than ever in the summer. [/QUOTE]

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