That is interesting, I can not get 602 sky news hd as my package is not HD, just 603 sky news. Although my TV is HD, it seems some channels in my virgin fun pack are HD such as ITV and gold are HD.
Looking at freeview there are 15 HD channels such as BBC 101.
I know the TV engineers always used sky news (233 freeview) to test the digital ariel signal as this is the hardest one to tune on freeview, but it moved to virgin 603 a short while ago and virgin 602 became sky news HD..
Virgin are switching channel numbers, 138 scfi moved to 139, sky arts 123 sky arts moved to 165, and added some extra HD channels and comedy channels.
I can see little difference between the SD channels and HD channels myself, but I think it makes a difference with sport.
626 is working ok at present.
The 4db equaliser may have some effect-?
Put simply, an equaliser is a frequency dependant attenuator. It helps to equalises signal level over the whole frequency range.
When signals are transmitted the different frequencies have different rates of loss so, for example, the higher frequencies may attenuate at twice the rate of lower frequencies (exagerated example). This could result in you having a signal which is ok (or too strong) at lower frequencies whilst its too weak at the higher frequencies, meaning the box may not pull in some channels.
In the above case the equaliser would be selected to simply attenuate the low frequencies to approximate what happens to the higher frequencies. This would compensate for the fact that the engineer had to initially set your signal so that the high frequencies were ok, meaning the lower ones were too strong, hence the need to attenuate them.
The cable from the equaliser has at the other end a short adaptor cable which converts the screw connection to the push fit on the V6 incoming signal. There are no attenuators, but I do have a device in the hub signal cable called a galvanic isolator (gives 2db loss)
alf28
