@87lions31 thanks for the update. I’m getting a new set of antennas (like yours) today and will report back on the signal strength. I’m hoping there will be some improvement, at the moment it’s around -107dBi.
I use the 'My BT' app on my iPhone.
Once logged in, you'll have to dig down through a lot of different menus. The buttons you need aren't always in the same place on every screen, but either way, these are the exact steps that I follow to check my signal strength:
Your products > Broadband > Set up and manage devices > Hybrid Connect > Hybrid Connect details
...it will then show your device details (including signal strength).
Obviously I'm writing this in March 2021, so it's possible that BT could change the layout of the app in the future. I also don't know whether its the same for Android phones. I assume it wouldn't be too different though.
Yes, I found they did help me - I went from one bar of 4G signal to two bars (just).
I got (SMA Antenna 10dBi 4G LTE Antenna WiFi Antenna High Gain Signal Booster for 3G/4G Router Modem ZTE USB Dongle) from Amazon (they were only £9 and looked like they would match the style of the Hybrid Connect nicely). There are also more expensive options on Amazon (which I assume would be even more sensitive and give even more of a signal boost if needed). The cheap ones did the job for me though.
I've followed the advice on this thread and achieved an improvement in dBa with the external aerials.
I am now at -104dBa (we're in a fringe coverage area in the chilterns with patchy EE network) and now have two bars and a pretty healthy 30mb/s when needed.
The Hybrid Connect and its integration to the SH2 is pretty neat. Works really well, especially now working from home is so prevalent.
Just noticed the hybrid connect showing 2 bars on its own for 2 days and now it has gone back to one bar!
Looks like BT Engineers are working on the issues?
BT needs to get this sorted or the hybrid connect will be a failure!
I noticed similar dips in my signal. When I first got the Hybrid Connect (before I bought the antennas) it was at two bars for a day or so, but then dropped down to one bar. When I bought and installed my antennas, it jumped to a strong two bar signal and then a day later dropped down to a weaker (but thankfully still two bar) signal.
My current theory is that the Hybrid Connect takes a couple of days to calculate the average, consistent 4G signal level that you get wherever you've placed it.
Rather than being like our mobile phones (which shows you how strong the signal is second by second), I think it shows you the average so you know whether the place you've put the Hybrid Connect is actually suitable for the long term. That's my best guess anyway.
Did you order any antennas in the end?
Let me know if it helps, I hope it does mate!
After trying the £8.99 antennae which made very little difference I ordered the above from Amazon. They have a 2mtr lead so I was able to place them outside. After moving them about quite a bit I found the optimum signal which reduced the signal from -109dBm to -89dBm. Excellent Antennae.