Running a Verizon Novatel USB-727 EVDO modem with CradlePoint MBR1000 router. Omni external antenna, 5dBi. dBm without antenna: -85dBm, with: -75dBm. Download 700-1500kbps, upload 200-700kbps, ping 90-200. Using Linksys PAP2T with Callcentric for VoIP. Getting occasional jitter. Will a Cyfre CA-819 amplifier improve VoIP performance and ping times?
Your signal strengths are actually pretty good. You may be hitting the jitter/latency limits of EVDO RevA. Amplifier "maybe" — if RSS varies drastically, a 13dBi Yagi like the Wilson Yagi might help. Otherwise you're limited by network.
KF7RCQ
Clarification: fading doesn't have to take you below receiver sensitivity — just decrease SNR forcing lower modulation. Amplifier improves SNR. If VZW uses 800MHz in your area, leaves won't affect much.
KF7RCQ
Thanks Thuor. LTE? Spending $200+ on a maybe is too much financial hardship. Callcentric has great support. Trying to convince my wife the setup works.
LTE is "Long Term Evolution" that Verizon has committed to deploy. My parents in India use Vonage on worse connections and optimizing VoIP settings brought quality to discernible levels.