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From: Jeroen Belleman <jeroen@nospam.please>
Newsgroups: sci.electronics.design
Subject: Re: A Complex Metaphysical Conundrum
Date: Thu, 11 Apr 2024 17:46:51 +0200
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On 4/11/24 17:15, John Larkin wrote:
> On Thu, 11 Apr 2024 16:16:20 +0200, Jeroen Belleman
> <jeroen@nospam.please> wrote:
> 
>> On 4/11/24 14:58, Cursitor Doom wrote:
>>> On Thu, 11 Apr 2024 09:50:14 +0200, Jeroen Belleman
>>> <jeroen@nospam.please> wrote:
>>>
>>>> On 4/10/24 23:42, Cursitor Doom wrote:
>>>>> On Wed, 10 Apr 2024 23:11:53 +0200, Jeroen Belleman
>>>>> <jeroen@nospam.please> 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.
> 
> The sum could be 1 dBmV.
> 

It could...

Jeroen Belleman