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From: "Edward Rawde" <invalid@invalid.invalid>
Newsgroups: sci.electronics.design
Subject: Re: A Complex Metaphysical Conundrum
Date: Wed, 10 Apr 2024 18:18:21 -0400
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"Cursitor Doom" <cd@notformail.com> wrote in message 
news:i52e1j9ctjqi1k1m9ej1aid2493foetnsq@4ax.com...
> On Wed, 10 Apr 2024 16:11:39 -0400, "Edward Rawde"
> <invalid@invalid.invalid> wrote:
>
>>"john larkin" <jl@650pot.com> wrote in message
>>news:v6sd1j1sr89ntc214dku5u5e04pks5toud@4ax.com...
>>> On Wed, 10 Apr 2024 15:57:55 -0400, "Edward Rawde"
>>> <invalid@invalid.invalid> wrote:
>>>
>>>>"Cursitor Doom" <cd@notformail.com> wrote in message
>>>>news:c6hd1jdjimga6ifo7b0kv7bqfj9750lbk3@4ax.com...
>>>>> 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.
>>>>
>>>>Changing a signal level can be thought of as multiplying the signal by a
>>>>constant.
>>>
>>> You can change something by adding, too.
>>>
>>
>>I haven't looked at it in detail but a bit of playing with a search engine
>>finds the question here:
>>https://broadbandlibrary.com/wise-and-mighty-decibel/
>>
>
> Jeez, when I said, "No Googling" I didn't seriously think anyone here
> would be dumb enough to need to actually do so! :-D

I don't see any mention of any search engine in your first post.

I tend to agree with John Larkin on this.

If a student can use a meter to see that a signal which was 3 somethings is 
now 5 somethings (depending on what is being measured) then I give them a 
pass.