Been keeping a keen eye on your research. Thank you for posting, As we know semtech IC’s has a max sensitivity of -145 more or less. the best/ worse signal i have received from the a node was -121 RSSI. now im not sure if this results is due to incorrect configuration or urban noise but i just dont want to miss out on the extra odd 20dB sensitivity that could result in extra range. So i guess what im asking is without breaking the law, what else could be done/tested to increase sensitivity.
It just seems odd that with all the work that has gone into antenna design exc that a simple GPA kick all the other antenna’s specifications without really costing anything.
I geuss one other option is to try and use a extreme high gain antenna for its receive gain but turn down the RF as to not break the law. the issue is the only reputable place i know where to buy a colinear 12db antenna is toaglas for $265. this is the only manufacturer that i have always found to be true to their word on spec.