Screwfix sell Labgear splitters which are suitable.
Eight metres? - that's a very long run, isn't there a way of putting the box nearer to where the VM cable enters the house?
Ok guys i got a 8 meter virgin cable from my mate who works for virgin this morning ran it from my virgin box on the wall in lounge and ran it to my splitter changed the wires from splitter to router and zgemma box done a rescan and again no cable channels picked up so now off to get a new virgin splitter and see how that goes
do long runs always cause a problem? I have connection from the vm box outside cable runs all the way up into attic then length of house and back down again to a 3 way splitter (must be 25 to 30metres long) then two zgemma connected (must be 10metres to one & 3metres to other) with router very short length from splitter and generally don't have too many or if any problems
If the cabling was installed by VM then no, it's not a problem as they calibrate everything before they leave.
If you add your own long cables, more often than not, there will be picture distortion and signal loss
Guys i had a zgemma h5.2tc and was running it from the white virgin box in lounge that brings the cable in from outside. And i used cheap coax cable £10 for 100 meters for years with no problems. the new box i purchased a zgemma h7c is in the same place as the old one was. i have changed all cables from the white virgin box in lounge to the router i have changed both cables from the splitter. one to the router one to the zgemma box i do a scan it finds nothing on the cable tuners but picks up all sat chans on tuner A tuners b and c nothing . as i live in leeds my network id is 41053 set to virgin media uk all systems every thing in the house that runs on broadband works fine. starting to think the box is duff. going to take it to my mates tom morn and try it there his router is only 1 meter away from his tv so no problems there . i will inform what happen tom. thanks for all advice given