Path: csiph.com!eternal-september.org!feeder.eternal-september.org!nntp.eternal-september.org!.POSTED!not-for-mail From: "Don" Newsgroups: sci.electronics.design Subject: Re: Ham shack satellite communications Date: Wed, 16 Sep 2026 11:56:40 -0000 (UTC) Organization: A noiseless patient Spider Lines: 46 Message-ID: <20260916b@crcomp.net> References: <20260914a@crcomp.net> <118c8tk$1mu2k$1@paganini.bofh.team> <20260914b@crcomp.net> <118dhem$36ihg$1@dont-email.me> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Injection-Date: Wed, 16 Sep 2026 11:56:41 +0000 (UTC) Injection-Info: dont-email.me; logging-data="3531452"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18sTt+fQy/ZvYu7I7VuXfi2"; posting-host="3b61c703cc60f6405ed99a12601d4181" Cancel-Lock: sha1:IgJiV/ZlIEqTWHwe0Tx6K/zQTXs= sha256:H8lPng2822yzGYj9BqJbfWUunirtpkfFJy8oCGmt5cw= sha1:clwltLm91v2lMleABQPcx6Rdpi8= sha256:UFIGezeyba+6i5PAo9/BTia0iCk15D7t3qSAJtGnUk4= Xref: csiph.com sci.electronics.design:747799 Jan Panteltje wrote: >>"Don" wrote: >>>Typo in original post corrected. >> >>C??il??n Niocl??s??n Glost??ir wrote: >>> Don wrote: >>>> >>>> It seems best to start with the receiver. Here's one simple receiver >>>> schematic: >>>> >>>> eggbeater antenna -> LNA -> LMR 200 -> RTL-SDR -> FreeBSD >>>> >>>> What's your favorite eggbeater and why? >>>> >>>> What's your favorite LNA and why? >>>> >>>> Thank you in advance. >>> >>> Maybe ask persons who use AmSat (an amateur-satellite initiative). >> >>Joseph A. DiVerdi [1] hosted a last minute, surprise forum at our >>Division's Ham Convention [2] last August. He brought along a 3U >>satellite to show off at his vendor's table. >> Instead of thrusters, it spins a miniature momentum wheel. A de >>rigueur RTL-SDR and Raspberry Pi sat next to the satellite on his table. >> Long story short, an EB144RK2M eggbeater will be used, along with a >>cheap LNA module from ebay [3]. It ought to be easy enough to replace >>the original LNA chip, if anyone knows of a superior LNA chip. >> >>Note. >> >>[1] >>[2] >>[3] > > Nice board, did you test it? Good idea. It will be tested upon delivery. Danke, -- 73, Don, WD7Q veritas _|_ liberabit | https://www.qsl.net/wd7q vos |