Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: rbowman Newsgroups: comp.os.linux.misc Subject: Re: Have One ? "Regency TR-1" - Orig Commercial Transistor Radio Date: 23 Aug 2025 06:00:08 GMT Lines: 30 Message-ID: References: <1084pn5$dbj6$1@dont-email.me> <1086fo9$pj3r$4@dont-email.me> <009jnlxiik.ln2@Telcontar.valinor> <108ac32$1n7i9$1@dont-email.me> <108aeni$1n7i9$11@dont-email.me> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Trace: individual.net 5iBPaHT5JS3f+t7+pVnRIwD0MJfGaCBovQuMHbhKbJh1IqJn8C Cancel-Lock: sha1:ekA7IgP1wBzd0r4g+GAIgpywsxA= sha256:0RZiVyGWEvhO+OWErtBLBM5nfwqI4hnTFNcBIR2zwg4= User-Agent: Pan/0.162 (Pokrosvk) Xref: csiph.com comp.os.linux.misc:72002 On Fri, 22 Aug 2025 20:00:02 +0100, The Natural Philosopher wrote: > On 22/08/2025 19:37, Carlos E.R. wrote: >> On 2025-08-22 20:14, The Natural Philosopher wrote: >>> On 22/08/2025 14:41, c186282 wrote: >>>> >>>>> I got this one when I went to uni: >>>>> >>>>> >>>> radio-amfm> >>>> >>>>    I remember those !  🙂 >>>> >>>>    Alas most of those little old radios had rather poor sensitivity >>>>    plus poor selectivity. >>>> >>> Actually selectivity came easy as adding transistors was way cheaper >>> than adding valves. >> >> It came from adding intermediate frequency transformer stages, which >> were not cheap nor easy to adjust. > > They were cheap and they were *really* easy to adjust. > > I build several portable radios. I spend one winter sort of working my way through radio design history. Ever build a regenerative receiver? They're fun.