Ok guys. Here's something I want to bring to the table because we all use amps/boosters on our mods. You guys may already know, but I'm just discovering/learning and bet others had no idea too. So here it goes....
I read a review on a 4W amp that stated that to get the full 36dB power of the amp, there needs to be a 21dBm input. So, the last week I've wondered and pondered on this quote. This morning, I hook up 40dB worth of attenuators to the meter (because of the expected 34dB from a 3W boost) and start measuring. My GL300C measured what it should hooked straight to it, 12mW - converts to 11dBm + 5 for factory antenna + 1 for loss through connectors = 17dB total. (Thats in the specs for this RC as "CE"???...Suppose to be 23dB FCC??... I'll deal with that later) My meter is reading really close according to what's expected in specs. Then, I add my 3W sunhan. 3W converts to 34.77dBm. Hook up my meter, and WOW! I only got a reading of 61mW! Keep in mind 1W = 1000mW. Thats only a 49mW boost. Without adding antenna, thats 17.85dBm total! If I add the factory 5dB antenna and connection loss, 23.85 dB total. A 3W booster only brought me up to FCC specs. (Conspiracy? Lolol) A "pre" amp would be needed to get the full 3 watts of boost.??
So, there's something to soak on for today. If anyone can shed light on this, by all means... it's a mod thread.. discuss away!
"Pre" amp needed.... Or "Bad/weak" amp?????
JB out
(Update: all my amps are consistent with these measurements. I seriously doubt they're all bad.)