Path: ...!weretis.net!feeder8.news.weretis.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Jeroen Belleman Newsgroups: sci.electronics.design Subject: Re: A Complex Metaphysical Conundrum Date: Thu, 11 Apr 2024 16:16:20 +0200 Organization: A noiseless patient Spider Lines: 37 Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Thu, 11 Apr 2024 16:16:26 +0200 (CEST) Injection-Info: dont-email.me; posting-host="80634d998e271a49ce6b3a27154f26ea"; logging-data="1827233"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/S4JT2/1xVx+4IuEXnxjM2" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.13.0 Cancel-Lock: sha1:vv+o9r8xXKZ9J+ekp7PvJDausF0= Content-Language: en-US In-Reply-To: Bytes: 2455 On 4/11/24 14:58, Cursitor Doom wrote: > On Thu, 11 Apr 2024 09:50:14 +0200, Jeroen Belleman > wrote: > >> On 4/10/24 23:42, Cursitor Doom wrote: >>> On Wed, 10 Apr 2024 23:11:53 +0200, Jeroen Belleman >>> wrote: >>> >>>> On 4/10/24 19:02, Cursitor Doom wrote: >>>>> Gentlemen, >>>>> >>>>> This is an exam question that trips up even some of the best students. >>>>> See what you make of it! >>>>> >>>>> Q: Is this statement correct: 'The signal level at the modem input >>>>> increased by 2dBmV going from +3dBmV to +5dBmV.' >>>>> >>>>> Your pal, CD. >>>> >>>> Haven't we had a discussion about this already some four years ago? >>>> Weren't you Don Kuenz then? >>>> >>>> Jeroen Belleman >>> >>> I don't recall any such discussion and no, I'm not Don Kuenz either. >> >> Allright then. The statement is wrong. An increase is in dB, not >> in dBmV. >> > > Nice, unequivocal answer there, Jeroen; many thanks. If you really want to open a can of worms, consider what might happen when you *add* a 2dBmV and a 3dBmV signal together. Granted, dBs weren't invented for making that easy. Jeroen Belleman