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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 21:10:59 -0400
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"Cursitor Doom" <cd@notformail.com> wrote in message 
news:cs4e1j5ohhb7fpcmnft14ad6pv66jtvi34@4ax.com...
> On Wed, 10 Apr 2024 18:18:21 -0400, "Edward Rawde"
> <invalid@invalid.invalid> wrote:
>
>>"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.
>
> So going back to the orginal question as stated, you're saying the
> statement in quotes is *correct* then. Nice to have a straight answer.

If you mean that do I think that something increases by 2 when it goes from 
3 to 5 then yes that seems reasonable to me.

You can also multiply it by 5/3 to get the same effect if you want. I don't 
mind.