@MikeFromPA,

1. I believe that all Powerline Signals are encrypted to protect the data throughout your home.

2. From what I am reading online,  it is possible to have simultaneous powerline connections, except they will share the overall bandwidth. Some people are also mentioning that the way to do this is via a VLAN.

3. I would recommend not doing this, as the backhaul for the entire network will be affected by the bandwidth being used in another network. Normally, you can place additional Powerline Units on one powerline network, as long as there is one node that is transmitting the network. 

4. I would assume that the main deco does not show Powerline, as the main node is receiving its signal through an ethernet cable. The satellite nodes also operate as client devices in a mesh network, so this may also be why you only see it for the satellite nodes. 

5. The channel scan in the Deco App can sometimes provide this reading even after changing channels, as a result of the congestion that the deco is bringing to the channel. When the decos are rebooted, they will scan and select a new optimized channel automatically. You may also be able to find an optimize now feature in the Deco app.

  @MikeFromPA,

The bandwidth available on your power lines would be determined by the Powerline Standard that is used in the devices attached to the line, as it is based off of specific frequencies that do not interfere with the Electrical 60Hz. This is why having one slower powerline unit on your network will slow the whole network down to the speed of that node, as it simply cannot handle the additional bandwidth and frequencies used to communicate with the newer Powerline Standards.

You may also be surprised at the performance of Powerline; wireless communications come with a lot of overhead, latency, and stability issues. All of these are not present in a Powerline Setup. While Gigabit Speeds aren't possible, the Powerline connectors are capable of providing plenty of bandwidth for normal use. The issue with Powerline is how difficult it can be to have a perfect Powerline network as a result of electrical interference from appliances, or noise filters at your home's breaker panel(Stopping connections from crossing circuits.

4. I think that the powerline indicator in the app is just an indicator of the Source of the Internet signal for that particular node, not how it is transmitting the network. This means that only the receiving Powerline nodes would have the indicator as they are the only nodes receiving a signal via Powerline, as the main node is connected to the internet via an Ethernet Cable.