ng it
is driven with enough input signal) and will have 13 dB of gain.
Al.
- Original Message -
From: "S55M" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>;
Sent: Wednesday, March 30, 2005 12:41 PM
Subject: Re: [Elecraft] OT: math question
&
Well, Bill, my first answer of zero feet width is, in fact, a correct
answer, albeit rather degenerate. It was an answer that came
immediately to mind. However, there is a nondegenerate answer, which
is
approximately 12.3119 feet.
best wishes,
dave belsley, w1euy
That can't be right. Dra
On Wed, 30 Mar 2005, S55M wrote:
Yes math is beautifull (callculating needed space for 3d antennas HI.
But google can spare some time and paper.
:)
http://home.att.net/~numericana/answer/algebra.htm#quartic
ANd now I know why my daughters always hated math, and why I never passed the
test to
For convenience, Mini-Circuits has a nice printable conversion table at
http://www.mini-circuits.com/dg03-110.pdf
Larry N8LP
Tom Hammond wrote:
At 12:01 PM 3/30/05, you wrote:
How would one calculate the amplifier gain (in dB) required to go
from one
power level to another? For exampl
Sent: Wednesday, March 30, 2005 11:01 AM
Subject: Re: [Elecraft] OT: math question
At 12:01 PM 3/30/05, you wrote:
How would one calculate the amplifier gain (in dB) required to go from one
power level to another? For example from 5W to 100W.
10 log(P2/P1) = 10 log(100/5) = 10 log(20) = 1
That can't be right. Drawing it (roughly) on paper shows it to be around 13
feet wide, give or take a foot or so. But coming up with a precise equation
takes more math skills than high school left me with...
Bill K3UJ
In a message dated 3/30/
I'll go with an alley of zero width.
best wishes,
dave belsley, w1euy
On Mar 30, 2005, at 3:22 PM, Dan Barker wrote:
I ran into a brain-teaser once, that had me baffled for hours (I won't
say
how many). Finally, I called my sister, the Rocket Scientist
("actually,
we're not _Rocket_ scienti
I like simple, 10Db gain will go from 5 to 50Watts; 3Db more will double 50
to 100 Watts. Approximately 13 Db
--
73
Chuck AA8VS
www.aa8vs.org/aa8vs
FP #113 MI-QRP #1212 SOC #445
Firebird #2117 TSARC #3952
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Beh
James C. Hall, MD wrote:
Hmmm ... never seen square root as O with dot-dot on top.
Right, they should have printed it as dah-dah-dah-dit ;-P
Sorry, couldn't resist this one 8-)
B73,
Andrea.
--
Homepage: http://andrea.borgia.bo.it /Amateur radio: IZ4FHT
___
Hmmm ... never seen square root as O with dot-dot on top.
Jamie
WB4YDL
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of S55M
Sent: Wednesday, March 30, 2005 2:47 PM
To: Elecraft
Subject: Re: [Elecraft] OT: math question
Yes math is beautifull
feet.
Al.
- Original Message -
From: "Dan Barker" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>; "Elecraft"
Sent: Wednesday, March 30, 2005 2:22 PM
Subject: RE: [Elecraft] OT: math question
> I ran into a brain-teaser once, that had me baffled for hours (I won&#
;Elecraft"
Sent: Wednesday, March 30, 2005 10:22 PM
Subject: RE: [Elecraft] OT: math question
> I ran into a brain-teaser once, that had me baffled for hours (I won't say
> how many). Finally, I called my sister, the Rocket Scientist ("actually,
> we're not _Rocket_
I ran into a brain-teaser once, that had me baffled for hours (I won't say
how many). Finally, I called my sister, the Rocket Scientist ("actually,
we're not _Rocket_ scientists" - That's a quote from her husband) and asked
her.
She and Paul spent a few minutes on the problem, figured it out, but
At 12:01 PM 3/30/05, you wrote:
How would one calculate the amplifier gain (in dB) required to go from one
power level to another? For example from 5W to 100W.
10 log(P2/P1) = 10 log(100/5) = 10 log(20) = 10 (1.30103) = 13.0103dB
An easy 'rule of thumb' way to get a good idea of such levels
i
.
> Why dBm? Because dBm is power related to 1mW=0dBm .
>
> S55M-Adi
>
>
> - Original Message -
> From: "W3FPR - Don Wilhelm" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>;
> Sent: Wednesday, March 30, 2005 8:23 PM
> Subject: RE: [Elecraft] OT: mat
In a message dated 3/30/2005 10:02:44 AM Pacific Standard Time,
[EMAIL PROTECTED] writes:
How would one calculate the amplifier gain (in dB) required to go from one
power level to another? For example from 5W to 100W.
The formula is: dB = 10 log (P2 / P1)
P2 / P1 = 100 / 5 = 20
ssage -
From: "W3FPR - Don Wilhelm" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>;
Sent: Wednesday, March 30, 2005 8:23 PM
Subject: RE: [Elecraft] OT: math question
> dB = 10 log (P2/P1)
> For your example of 5 watts to 100 watts, is an increase of 13.01029996
dB -
dB = 10 log (P2/P1)
For your example of 5 watts to 100 watts, is an increase of 13.01029996 dB -
pardon the rounding but that is all the digits my calculator shows :>).
73,
Don W3FPR
> -Original Message-
>
> How would one calculate the amplifier gain (in dB) required to go
> from one
> po
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