I understand the principal of calculating long run cable loss in RF mic systems then using the appropriate front end amp gain to compensate.If I am using the Shure or the PWS helical , do I consider the "10-14 db gain" in that calculation to determine amp gain?So, if I have 8 db of cable loss and the antenna has 10 db of "gain" do I not use an amplifier?Is the type of antenna not considered in cable loss compensation calculations?
"Gain" is a misleading term of art, misused in this instance (and others). It should be referenced/charted as "Forward Tuned Losses v. Omni Losses". In this manner antenna types display their advantages (mislabeled as "gain"). No passive device produces gain.
Not true. There are many passive devices that can produce gain.
The Second Law of Thermodynamics seems to refute this.
Informally, the Second Law posits that you cannot get more out than you put in, no free lunch, etc. That should suffice for this forum.
My reply suggested that the RF-world inner circle term of art was misleading to the casual user. "Less lossy" does not equal "gain" for most of us. To wit: If the stock market fell by 50%, but your portfolio only sank by 30%, would you be rewarding your broker for a 20% gain? I think not..
The OP was also asking guidance regarding inline RF amplifiers for prosound usage. My reply (which I believe helpful and supported by experience) promotes the notion that for most applications inline RF amplifiers are unnecessary.
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