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From: Cursitor Doom <cd@notformail.com>
Newsgroups: sci.electronics.design
Subject: Re: A Complex Metaphysical Conundrum
Date: Thu, 11 Apr 2024 13:56:14 +0100
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On Wed, 10 Apr 2024 21:10:59 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:

>
>"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.

I'm afraid that's not exactly the question, though.
Here's what was asked again:

Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'

You've already nailed your colours to the mast with your opinion that
the statement is correct. Are you happy with that or would you like to
change your mind?

I'll be posting 'the answer' in about 5 hours' time for those who have
yet to stick their heads above the parapet and might be tempted to
participate. It's been a bit deafeningly quiet so far. ;-)

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