Lost my rag (finally) with the set-up in my workshop for doing tellys.
There's an aerial feed coming into the workshop from the house distribution system, and this carries the usual freeview MUX's, a CH 36 analogue signal from my CCTV system, and SKY on CH 69.
This has usually fed a Humax F2-FOXT freeview box, and then usually lashed up to the Aurora, possibly with a DVD player attached. It's all a bit of a mess, so I've built myself a little rack...
The aerial comes in on the top Belling Lee, and feeds the bottom freeview box. It's output is on CH60. The RF then goes to the second freeview box, who's output is on ch 55, this is then fed to the VHF/UHF modulator , which is set to UHF on CH50. The output from the aurora is set to CH1, and is fed to a variable attenuator, and then through a low pass filter, centered on ~65MHz. This RF is then combined with the UHF and fed to the lower Belling Lee.
The video to the Aurora can be switched by the top wafer switch to Nothing (Test card C), the auxiliary sockets on the front panel, the DVD player or either freeview box. The video to the UHF modulator can be switched between the DVD or the Aux input.
I don't seem to be getting any patterning or crosstalk. More luck than judgement I suspect! I was expecting to have to play with the RF channel spacing a little.