Mark Clarkstone wrote:
> If you can't find any frequencies install w_scan (sometimes listed as wscan, w-scan or w_scan). You can use that to do a scan of all the available frequencies, from that you can work out the details. If you get stuck just post the w_scan results here & I'll try and help.
Ok. Seems I was wrong about the aerial being tuned to a secondary transmitter. I tried to install scan and was told LibreElec was read-only. I figured out how to get around that for installing the driver for Nova T-500 but found another solution this time.
Poking around on the manual tuning menu of the older of our TVs, both of which are auto-tuning, I found a way of seeing what channel it was on and the signal strength. It showed that the aerial is, in fact, tuned to the nearest primary transmitter[1]. (This was not the case prior to the digital switch over, which I thought was because are in the shadow of an intervening mountain[3]). Anyway, it's one of the available predefined mux settings: "Ireland: ie-kippure."
To recap, I
* installed TVheadend and connected to it via a browser (having copied the firmware[2] to /storage/.config/firmware and rebooted)
* created admin and non-admin users (network 0.0.0.0/0 for now)
* added a DVB-T network called Saorview (Irish equivalent of Freeview), set predefined muxes to ie-kippure and 'character set' to auto
* configured each of the adapters to "Enabled", "Saorview, and "Low Noise Amplifier"
* selected the network and forced a scan, with the following result:
018-02-03 21:15:52.105 subscription: 00A1: "scan" subscribing to mux "770MHz", weight: 6, adapter: "DiBcom 3000MC/P #0 : DVB-T #0", network: "Kippure", service: "Raw PID Subscription"
2018-02-03 21:15:52.105 mpegts: 738MHz in Kippure - tuning on DiBcom 3000MC/P #1 : DVB-T #0
2018-02-03 21:15:52.106 subscription: 00A2: "scan" subscribing to mux "738MHz", weight: 6, adapter: "DiBcom 3000MC/P #1 : DVB-T #0", network: "Kippure", service: "Raw PID Subscription"
2018-02-03 21:16:09.990 mpegts: 738MHz in Kippure - scan no data, failed
2018-02-03 21:16:09.990 subscription: 00A2: "scan" unsubscribing
2018-02-03 21:16:09.990 mpegts: 770MHz in Kippure - scan no data, failed
2018-02-03 21:16:09.990 subscription: 00A1: "scan" unsubscribing
The parameters for the muxes look good from what I have read of correct values (bandwidth 8Mhz through to transmission mode 8k)
Since thereis a signal on the cable, unless I've gotten something wrong I'd suspect a problem with the tuner card, but it worked on Windows 7. It's a while since I used it so I will need to verify that it's still ok, but I can do this later tonight by swapping the original HD with Windows Media Centre on it back in.
Suggestions welcome.
* [1] Channel 58 on Kippure transmitter: 770 Mhz; also transmits on Channel 54, 738 MHz
* [2] dvb-usb-dib0700-1.20.fw
* [3] within a few miles of us people are 2 different primary transmitters, 4 secondary ones, and some still have no terrestrial signal at all--all because: mountains