Hi all,
Using Vera Lite with UI5 (1.5.672 for Heavy Duty Switch) with a mix of 30 real & virtual devices by way of this calculation.
Living in old 2-storey house with up to 2 foot thick walls. Have Z-wave devices spread throughout the house and Vera Lite in the centre, but was getting ongoing problems with scenes, devices disappearing, heating not coming on at scheduled times etc. Heals / repairs etc. did not cure problem and I was considering removing Vera altogether.
As a last effort, I decided to upgrade the antenna with advice mostly taken from here (thanks Sanuja!). I bought this antenna, and this cable. NB the antenna is a 1/4 wave antenna tuned (cut to suit) to 868Mhz (this is for Europe) and it was fitted with an SMA Male connector. The cable is 10cm SMA Female jack to U.fl/IPX Pigtail Antenna Cable at 1.13mm. You can get longer than 10cm but the Vera Lite is small and longer cable leads to more attenuation so aim for shortest. Open Vera Lite, disconnect internal antenna and tape it up, drill and fit new antenna as per picture to finish.
After installing, I ran a repair overnight. It felt like it was a day or two before things were working properly again but the improvement in performance is massive. Before adding the antenna, I was getting 2-3 stars on the repair report for most devices and some didn’t show at all. After the install, ALL devices are 5 stars and I have not had a device disappear since.
Long story short, well worth the small expense and effort for such a significant improvement.