Thanks for the hints k6sti.
I have a T8 on order, but may have to send it back if I have gotten incorrect info about it's features.
I ordered my T8 after reading a review on Amazon.com in which "Norseman" said -
I ran the Automatic Scan for the first time and instantly had more channels than before (4 PBS channels compared to one before, along with four of another Network that previously only had one using just analog). Then I pointed the antenna towards the one major city we live to the east of, ran the Update Scan and pulled in more channels without wiping out the previous channels found. Point the antenna towards the other major city we live west of, and more channels appeared rerunning the Update Scan. In all, about 26 channels with an indoor antenna that we've had for close to eight years.
Unfortunatly, after putting the t8 on order, I found some conflicting information here on AVSforum.
Here on the forum, several folks have commented that ALL channel scans on the T8 will wipe out any channels that are not found on that particular scan (making the T8 absolutely USELESS for those who have a directional antenna with a rotor, and who have to deal with a spread of stations at different azimuths)
For example, here on AVSforum greg47 said -
There is no way to manually add channels with this unit and when you auto scan it erases previous scans with no way to keep the previous channels in memory. So if you live between two cities like I do you have to choose which stations in which city you want to see or have two antennas combined together and pointed in the right directions.
According to this comment, every time you point the antenna in a new direction, you would have to repeat the channel scan to pick up new channels, but then you would loose the other channels!
Don't you love it when you rely on some info on the web, only to find directly conflicting information elsewhere?
The distinction between a normal scan, and 'update' scan, is important, because in the DTV converter boxes not designed by total MORONS, there is a special scanning mode, that will only update and ADD channels but not delete them (like the CM7000).
Since you have a recently shipped Tivax T8, could you check if the Channel Scan menu of the Tivax T8 now has an "Update Scan" feature?
This can be very easily checked by removing the antenna coax and repeating the channel scan to see if any channels drop from the list.
I know that there are some workarounds, such as the direct channel entry trick you mentioned, but even this hack is not guaranteed to always work.
The snag is that (as you may or may not be aware), thanks to a lot of silly ‘branding’ concerns on the part of broadcasters during the transition, the actual RF channels and the advertised commonly refered to channel numbers often do not line up any more (ATSC ‘virtual’ channel 8 may actually be on UHF RF channel 34).
CECB boxes are required to hide this ugly fact from the user by re-mapping the channels, but sometimes it is important for the user to be able to access the RF channel directly.
I ordered the T8 spicifically because several reviews mentioned that this sort of direct RF channel entry is possible.
Now, from what I have read here, it would appear that this is also implemented pretty stupidly in the STB-T8 (unless something has changed in the latest firmware).
The problem with direct channel access on the T8 as it is now described, is that it doesn't seem to differentiate real RF channels from 'virtual' channels, so the direct entry hack will not work after some stations start to move DTV operations back onto their previously active analog channels, because the T8 will be confused and just see the remapped assignment on the same channel, and jump to the ‘virtual channel’ instead.
I reason I am concerned is that I want to be able to use the T8 in an RV while traveling (parked of course, due to multipath) with a hand rotatable directional antenna, and can't deal with waiting 5 minutes for the unit to rescan every time I re-tweak the antenna.
So my questions are -
1. Does the T8 now allow no nonsense unambiguous
2. If not, does the T8 now at least have an ‘update only’ scan menu option that will NEVER loose previously found channels? (as implied by the above Amazon quote)