A friend writes: Some techical advisor told me to disconnect the antenna from the converter, to rescan, then connect the antenna back and rescan again. If this doesn't work, to buy a newer antenna.
Does it really help to rescan with no antenna, and then with. Won't one step, rescanning with the antenna give the same results?
That depends on the firmware in the converter.
I've read that some converter boxes don't handle an "analog to digital" transition on the same channel very well. Specifically: if during the first scan the box found an analog transmission on a channel, and if that channel's mode is switched to digital, the converter may *not* "see" the new digital channel during a second scan... it'll see that there's a signal of some sort, but won't change the internal memory setting for that channel from "analog" to "digital", and won't be able to tune to that channel.
It's a firmware bug, really.
If you disconnect the antenna and re-scan, there won't be any detectable signal on that channel (or any other). The errant converter will reset the channel memory to "unoccupied". If you then connect the antenna again and re-scan, digital channels should be detected properly.
I don't think this problem affects many different models of converter, but I have heard of it happening.
--
Dave Platt AE6EO
Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!
Thank you. It's good to know that the tech is not putting out nonsense. And it's also good because the tech worked for the FCC as a digital specialist or something - Phone 888-225-5322 I didn't mention that before. :)
That's 1-888-CALL-FCC which is the general phone number for the FCC in Washington DC.
Digital tuner, loss of a channel, due to some reclassification of channels at the transmitter or poor reception leading to "dialog box" saying "no signal" -retune , and you do so when reception is bad. Assuming generally enough signal strength by checking on the "manual" tuning option for the 6 or so digital channels for your area. Choose a time of day/weather conditions that give best reception. In my case, worst reception is when sun is low and nearing in-line the the rear of the Yagi. Switch off the box at the mains Disconnect the aerial lead. Power up and go through the installation process to clear all contents of the stations. reconnect the aerial power on Redo the installation process.
-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on
Yes, but it's not really a matter of analog to digital or such. It helps because many stations were on temporary UHF bands with their HD, and once the analog was turned off they moved back to their original channel assignment. Some boxes, on a re-scan, would find the "new" station on it's proper current frequency but would fail to forget the old temporary UHF position.
Scanning with no input signal is just a way to make it forget. We have solved a lot of complaints with this suggestion.
Yes, but it's not really a matter of analog to digital or such. It helps because many stations were on temporary UHF bands with their HD, and once the analog was turned off they moved back to their original channel assignment. Some boxes, on a re-scan, would find the "new" station on it's proper current frequency but would fail to forget the old temporary UHF position.
Scanning with no input signal is just a way to make it forget. We have solved a lot of complaints with this suggestion.
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.