Small world, i worked with a few guys that came from SCCI when i was in London. I used to work for SSCI's main competitor until the area manager got on my tits that once too often
I just do the aerial stuff as and when it arises now. I found it much better to have a more sociable job where i dont have to keep going to different parts of the country every week. I just do 9 til 4 now about 3 miles from my home. Its perfect for me
I've not got many pics of the stuff i installed, but this was a headend i did that if i remember rightly was feeding a 180 property system with 4 repeaters. Only issue i had was to squeeze a headend designed for a size 1 cabinet into a size 2 cabinet because the dozy twonks that installed the cabling and cabs put the wrong one up and it had to be up and running that day for the 2010 world cup.
As for your problem, you could use a DISEqC inserter to send the DISEqC command to switch to A/B.
Something like this
Code:
https://www.applegate.co.uk/b2b-products-services/a2a211a0278911e395ac005056822520.html
I believe that EMP and Emitor also make these devices.