1. replace your ethernet cable to moca adapter. even cable that seemingly ok it still can be faulty. friend of mine had recently similar problem with cable. he replaced $300 worth of equipment before he replaced cable
2. if coax going through splitter and splitter is old, it may cause issues (moca using higher frequency ranges). get new splitter that is moca compatible from reputable company. for example https://a.co/d/0SIcvRP . don't use splitter with more ports than you need and all unused coax connectors should have terminator on them
3. get some coax signal meter to make sure that you have no problems with cable/connectors. in case that wiring is old (>10-15 years), get new connectors and recrimp coax. also replace wallplate couplers (neighbor of mine had problem with moca month ago. i traced it down to bad wallplate couplers. ).
moca adapters can be accessed via browser to see their internal state/quality/etc. take a look at it as well
These steps above should get you on the right track with MoCA.
Specific to the goCoax adapters - are you connecting the MoCA adapters to 2.5GigE devices? If so, the goCoax adapters have an (unfortunately) not well-known-enough issue where you need to disable EEE/Green Ethernet to get a stable connection with some devices.
Screenbeam makes a MoCA adapter that doesn't have this issue, the ECB7250S02, and goCoax claims to have a firmware without EEE enabled on the adapter side if you email their support email as well.
That coax splitter only handles up to 1675MHz, which isn’t that great anymore. It’s better to use ones that go up to 2500MHz for the newer MoCa standards.
this is what i remembered. it's just given that docsis 4 is up to 1794mhz, it won't surprise me if they will make moca3 that will try to climb up in frequencies to avoid overlapping
1. replace your ethernet cable to moca adapter. even cable that seemingly ok it still can be faulty. friend of mine had recently similar problem with cable. he replaced $300 worth of equipment before he replaced cable
2. if coax going through splitter and splitter is old, it may cause issues (moca using higher frequency ranges). get new splitter that is moca compatible from reputable company. for example https://a.co/d/0SIcvRP . don't use splitter with more ports than you need and all unused coax connectors should have terminator on them
3. get some coax signal meter to make sure that you have no problems with cable/connectors. in case that wiring is old (>10-15 years), get new connectors and recrimp coax. also replace wallplate couplers (neighbor of mine had problem with moca month ago. i traced it down to bad wallplate couplers. ).
moca adapters can be accessed via browser to see their internal state/quality/etc. take a look at it as well