Hello Ed, I do not know the NF of the XV144, but I guess it's somewhere around 1 dB. If you want me to calculate how much there is to win, give me the NF of the XV144 and your cable loss. It makes only sense (practically in most cases) if you place the preamp at the antenne side. But gaining 0,2 db in NF by placing the preamp at the antenne side isn't worth the trouble unless you go for EME (not the case here I guess looking at the antenne type)
73's Evert PA2KW -----Oorspronkelijk bericht----- Van: [email protected] [mailto:[email protected]] Namens Edmund Wright Verzonden: vrijdag 14 maart 2014 0:25 Aan: [email protected] Onderwerp: [Elecraft] GaFET Preamp for XV144 transverter I have recently finished aligned and tested an Elecraft XV144 Transverter. I have an Advanced Receiver Research SP144VDG GasFet 2 meter preamplifier. Its specs are as follows: Noise Figure < 0,55 dB Gain 24 dB Compression +12 dBm Transceiver Power <25 watts Should I use my preamplifier between my Isopole 144 MHz vertical antenna and my XV144 transverter antenna connector? I will have about 25 feet of coaxial cable between the preamplifier mounted on the antenna and the XV144 transverter. I will appreciate any comments or suggestions Ed Wright AA6LZ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
