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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.
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