At 9/7/2007 20:18, you wrote: >Hi everyone > >I have had a 10 foot dish for 20 years now with a StarTrak Eight >analog receiver. I got a ST-9900 DVB receiver last year. I want to >hook up the DVB receiver so that it can automatically switch from Ku >to C band. I use the analog receiver to move the dish. I know I need a >diseqc switch. I was wondering if any of you have a preference as to >what brand to buy or not to buy.
Try to find one with a decent isolation rating. Most don't seem to be much better than 20-25 dB. If there is a large difference between your C & Ku IF signal levels, you can get interference between the two through the switch. It happened on my system. Since I couldn't find a high-isolation DiSEqC switch, I added some attenuation on the Ku side to bring its level down to around the same as the C-band IF. Bob NO6B
