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: Tue, 15 Sep 2026 21:40:40 -0000 (UTC) Organization: A noiseless patient Spider Lines: 40 Message-ID: <20260914b@crcomp.net> References: <20260914a@crcomp.net> <118c8tk$1mu2k$1@paganini.bofh.team> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Injection-Date: Tue, 15 Sep 2026 21:40:40 +0000 (UTC) Injection-Info: dont-email.me; logging-data="2981416"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+q5MwvW6wVkadx+82f8ihd"; posting-host="79cc7b1db74225117fdbb8917c4fdf56" Cancel-Lock: sha1:Twp13OER7wEiSYSAoWbjuMTxhW8= sha256:wM6xdmBGElMWJ34GWnvYLbiF3WDxJL6IiCEkhmH9p6Y= sha1:NWpuPYssthb3mLgQUE8P1YXw330= sha256:ibzMueLfIebiuDInQ1CbhOBklBW1Amdc5tUFnHcP2mY= Xref: csiph.com sci.electronics.design:747784 Typo in original post corrected. Cóilín Nioclásín Glostéir 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] Danke, -- 73, Don, WD7Q veritas _|_ liberabit | https://www.qsl.net/wd7q vos |