I was wondering if there is a better transistor that the 2SC2990?
I was looking to upgrade a 2970dx.
</p>
I was looking to upgrade a 2970dx.
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2SC2990
- Thread starter datsun66
- Start date
I was wondering if there is a better transistor that the 2SC2990?
I was looking to upgrade a 2970dx.
</p>
I was looking to upgrade a 2970dx.
A
An Army of ME
Guest
2290?
i would say you are wasting your time.. any mods to get a few more watts would never be noticed..
money probably better spent on a small amplifier..
</p>
i would say you are wasting your time.. any mods to get a few more watts would never be noticed..
money probably better spent on a small amplifier..
</p>
A
An Army of ME
Guest
2290?
i would say you are wasting your time.. any mods to get a few more watts would never be noticed..
money probably better spent on a small amplifier..
</p>
i would say you are wasting your time.. any mods to get a few more watts would never be noticed..
money probably better spent on a small amplifier..
</p>
<img src=http://www.wwdx.org/smilies/posticon55.gif ALT=":55">
Bah haw haw Am I just a WWRF dude or what.
</p>
Bah haw haw Am I just a WWRF dude or what.
<img src=http://www.wwdx.org/smilies/posticon55.gif ALT=":55">
Bah haw haw Am I just a WWRF dude or what.
</p>
Bah haw haw Am I just a WWRF dude or what.
J
JustinDePolis2
Guest
J
JustinDePolis2
Guest
J
JustinDePolis2
Guest
Here...let's try this, simple and to the point, cut and copied from a web site, so I wouldn't go crazy adding 1000's of words of my own:
Decibal is the unit used to express relative differences in signal strength. It is expressed as the base 10 logarithm of the ratio of the powers of two signals:
dB = 10 log (P1/P2)
Signal amplitude can also be expressed in dB. Since power is proportional to the square of a signal's amplitude (e.g., a power ratio of 100 is equivalent to an amplitude ratio of 10), dB is expressed as follows:
dB = 20 log (A1/A2)
Logarithms are useful as the unit of measurement because (1) signal power tends to span several orders of magnitude and (2) signal attenuation losses and gains can be expressed in terms of subtraction and addition.
For example, suppose that a signal passes through two channel segments is first attenuated in the ratio of 20 to 1 on the first leg and 7 to 1 on the second. The total signal degradation is in the ratio of 140 to 1. Expressed in dB, this becomes 13.01 (10 log 20) + 8.45 (10 log 7) = 21.46 dB.
The following table helps to indicate the order of magnitude associated with dB:
1 dB attenuation means that 0.79 of the input power survives
3 dB attenuation means that 0.50 of the input power survives
10 dB attenuation means that 0.1 of the input power survives
20 dB attenuation means that 0.01 of the input power survives
30 dB attenuation means that 0.001 of the input power survives
40 dB attenuation means that 0.0001 of the input power survives
Click Here To Go To FG Best Communications
A word to the wise is not necessary; it’s the stupid ones that need the advice. - Anonymous</p>
Decibal is the unit used to express relative differences in signal strength. It is expressed as the base 10 logarithm of the ratio of the powers of two signals:
dB = 10 log (P1/P2)
Signal amplitude can also be expressed in dB. Since power is proportional to the square of a signal's amplitude (e.g., a power ratio of 100 is equivalent to an amplitude ratio of 10), dB is expressed as follows:
dB = 20 log (A1/A2)
Logarithms are useful as the unit of measurement because (1) signal power tends to span several orders of magnitude and (2) signal attenuation losses and gains can be expressed in terms of subtraction and addition.
For example, suppose that a signal passes through two channel segments is first attenuated in the ratio of 20 to 1 on the first leg and 7 to 1 on the second. The total signal degradation is in the ratio of 140 to 1. Expressed in dB, this becomes 13.01 (10 log 20) + 8.45 (10 log 7) = 21.46 dB.
The following table helps to indicate the order of magnitude associated with dB:
1 dB attenuation means that 0.79 of the input power survives
3 dB attenuation means that 0.50 of the input power survives
10 dB attenuation means that 0.1 of the input power survives
20 dB attenuation means that 0.01 of the input power survives
30 dB attenuation means that 0.001 of the input power survives
40 dB attenuation means that 0.0001 of the input power survives
Click Here To Go To FG Best Communications
A word to the wise is not necessary; it’s the stupid ones that need the advice. - Anonymous</p>
J
JustinDePolis2
Guest
Here...let's try this, simple and to the point, cut and copied from a web site, so I wouldn't go crazy adding 1000's of words of my own:
Decibal is the unit used to express relative differences in signal strength. It is expressed as the base 10 logarithm of the ratio of the powers of two signals:
dB = 10 log (P1/P2)
Signal amplitude can also be expressed in dB. Since power is proportional to the square of a signal's amplitude (e.g., a power ratio of 100 is equivalent to an amplitude ratio of 10), dB is expressed as follows:
dB = 20 log (A1/A2)
Logarithms are useful as the unit of measurement because (1) signal power tends to span several orders of magnitude and (2) signal attenuation losses and gains can be expressed in terms of subtraction and addition.
For example, suppose that a signal passes through two channel segments is first attenuated in the ratio of 20 to 1 on the first leg and 7 to 1 on the second. The total signal degradation is in the ratio of 140 to 1. Expressed in dB, this becomes 13.01 (10 log 20) + 8.45 (10 log 7) = 21.46 dB.
The following table helps to indicate the order of magnitude associated with dB:
1 dB attenuation means that 0.79 of the input power survives
3 dB attenuation means that 0.50 of the input power survives
10 dB attenuation means that 0.1 of the input power survives
20 dB attenuation means that 0.01 of the input power survives
30 dB attenuation means that 0.001 of the input power survives
40 dB attenuation means that 0.0001 of the input power survives
Click Here To Go To FG Best Communications
A word to the wise is not necessary; it’s the stupid ones that need the advice. - Anonymous</p>
Decibal is the unit used to express relative differences in signal strength. It is expressed as the base 10 logarithm of the ratio of the powers of two signals:
dB = 10 log (P1/P2)
Signal amplitude can also be expressed in dB. Since power is proportional to the square of a signal's amplitude (e.g., a power ratio of 100 is equivalent to an amplitude ratio of 10), dB is expressed as follows:
dB = 20 log (A1/A2)
Logarithms are useful as the unit of measurement because (1) signal power tends to span several orders of magnitude and (2) signal attenuation losses and gains can be expressed in terms of subtraction and addition.
For example, suppose that a signal passes through two channel segments is first attenuated in the ratio of 20 to 1 on the first leg and 7 to 1 on the second. The total signal degradation is in the ratio of 140 to 1. Expressed in dB, this becomes 13.01 (10 log 20) + 8.45 (10 log 7) = 21.46 dB.
The following table helps to indicate the order of magnitude associated with dB:
1 dB attenuation means that 0.79 of the input power survives
3 dB attenuation means that 0.50 of the input power survives
10 dB attenuation means that 0.1 of the input power survives
20 dB attenuation means that 0.01 of the input power survives
30 dB attenuation means that 0.001 of the input power survives
40 dB attenuation means that 0.0001 of the input power survives
Click Here To Go To FG Best Communications
A word to the wise is not necessary; it’s the stupid ones that need the advice. - Anonymous</p>