Yep, that is how you do it. 30 watts EIRP is 44.7 dBm 5 watts is 37 dBm. So 44.7 - 37 = 7.7 dB gain.
A 7.7 dBi antenna is pretty common. After adding antenna gain, I don't see much room to amplify. -----Original Message----- From: Adam Moffett Sent: Thursday, July 12, 2018 11:06 AM To: [email protected] Subject: [AFMUG] How to count amplifiers in link budget I'm looking at an IoT application where we're allowed 30W ERP. The transmitter is 5W, so even with antenna gain I have room to amplify that.
How do you count an amplifier in your link budget? Just add the amp's tx gain and subtract connectors, or is there more to it than that?
Strangely I've never used an amplifier.....I've never had a legal application for one before.
-Adam -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
