LibreElec 10 + RPI 4 + Astrometa DVB-T2 = does not detect any channels on MUXes working in VHF

Are you using Tvheadend server? You should be able to add or edit some existing MUX to your preffered frequency.

Quote from Jedrusia

... My problem is that no MUXs operating in the VHF band are detected ...

The next question is how ... can I receive FM ...

Bearing in mind that VHF and FM are radio bands for analog broadcasts that are incompatible with tvheadend's digital reception system, I'm not surprised that it doesn't work in CE, LE and tvheadend.

Quote from elonesna

Bearing in mind that VHF and FM are radio bands for analog broadcasts

I would disagree with VHF, it's often used for digital broadcasting as well.

Astrometa can receive even FM but it needs an appropriate SW.

Add-on:RTL-SDR FM Radio Client - Official Kodi Wiki

In the Kodi articles about analog radio it is already explained that this is full of incompatibilities and exaggerated process requirements for analog to digital conversion, that is, not usable in practice.

In relation to the VHF band, I challenge you to tell me the name of a single public TV broadcast that broadcasts in this band in ATSC, DTMB, DVB-T/DVB-T2 and ISDB-T digital format anywhere in the world ( I obviously exclude military and industrial applications). Will not be able!

Quote from elonesna

n relation to the VHF band, I challenge you to tell me the name of a single public TV broadcast that broadcasts in this band in ATSC, DTMB, DVB-T/DVB-T2 and ISDB-T digital format anywhere in the world ( I obviously exclude military and industrial applications). Will not be able!

I did not tell about TV and in fact I was thinking about DAB which examples you can find easily I believe.

But at least the post #1 above is an answer.

Rzeszów(Krosno)/Sucha Góra:
MUX8: (6 channel, 184 MHz Frequency, Polarization V, Power 18 kW)

It's a questiion how do you have the Astrometa adapters configured in Tvheadend. I would disable the RTL2832 (DVB-T) and Sony CXD2837ER (DVB-C). Keep only Sony CXD2837ER (DVB-T) enabled (it supports both DVB-T and DVB-T2). Reboot and configure / test again.

Try to do this settings from scratch, before you search for channels for the first time (uninstall the Tvheadend server Add-on including settings, install it again). Disable the unneeded adapters and perform the MUXes configuration from Tvheadend.

Consider a manual settings for just the MUX8 as outlined in post #2.

Create a Network with just that single MUX, set the Frequency to 184500000, then you may need to play with Bandwith (probably 7 MHz for VHF) and Constellation. Then run Force Scan for the Network.

BTW. you can also try to set the fixed adapter number for Astrometa before you start configuring Tvheadend:

echo options dvb-usb-rtl28xxu adapter_nr=5 > /storage/.config/modprobe.d/astrometa.conf

Reboot LE to activate it.

Quote from elonesna

In relation to the VHF band, I challenge you to tell me the name of a single public TV broadcast that broadcasts in this band in ATSC, DTMB, DVB-T/DVB-T2 and ISDB-T digital format anywhere in the world ( I obviously exclude military and industrial applications). Will not be able!

ATSC 2-13 are VHF https://git.linuxtv.org/dtv-scan-table…ies-8VSB-062009 and still active.

Martin

Quote from elonesna

In relation to the VHF band, I challenge you to tell me the name of a single public TV broadcast that broadcasts in this band in ATSC, DTMB, DVB-T/DVB-T2 and ISDB-T digital format anywhere in the world ( I obviously exclude military and industrial applications). Will not be able!

I'm afraid you're very mistaken - it's quite easy to document current VHF TV broadcasts...

Off the top of my head DVB-T/T2 services in VHF are in use in Australia, were introduced in Sweden with DVB-T2 HD, and have also been used in Finland. ATSC in the US uses VHF widely too.

In Australia VHF Band III is currently used for DVB across large parts of the country (VHF's wider coverage areas make a lot of sense for a large country like Aus).

As an example here are the frequencies for DVB-T broadcasts in Perth, Australia : https://www.digitalbitrate.com/dtv.php?mux=SB…live=36&lang=en - all 5 DVB-T muxes are in VHF Band III (177.5MHz to 226.5MHz range) , not the UHF Band IV/V frequency range

In Sweden their DVB-T2 Nät 7 mux is currently carried on Channels 5,6,7 and 8 in VHF Band III in some parts of the country - such as Skellefteå, where Channel 6 is used (Sweden re-introduced VHF Band III broadcasting, previously only used in TV terms for analogue PAL, when they introduced more muxes for DVB-T2 HD services). (For reference - in Europe, any RF channel below C21 is VHF, with the UHF TV Bands IV and V running from 21-69, though >800MHz has been cleared and >700MHz are being cleared in most countries)

Swedish TV broadcasting authority link here where you'll see a few transmitters using RF channels 5,6,7 and 8 in VHF Band III for their 7th mux :

https://www.teracom.se/privat/Support/frekvenstabeller-tv/

In both Sweden and Australia, Band III is used for both DVB-T/T2 digital TV services and DAB/DAB+ Digital Radio services. (In other European countries like the UK, DVB-T/T2 is only in UHF, and VHF Band III is used for DAB/DAB+ only in consumer broadcasting terms, if it's used at all)

I'm not sure if Finland is still using VHF - but it was at one point.

In the US - VHF Band I and Band III are both used for ATSC digital TV.

Here's the Rabbit Ears listing for New York : https://www.rabbitears.info/market.php?mktid=1

If you look at the RF Physical Channel numbers you will see there are lots of channels below Channel 14 (which is the first US channel in the US UHF band numbering scheme) - anything below 14 is a VHF channel. VHF Band III contains channels 7 to 13, VHF Band I contains channels 2-6. Even the main ABC station - WABC - is on RF channel 7 (which is around 174MHz).

(NB The US and Europe use different VHF/UHF channel numbers because the US uses 6MHz wide channels, whereas Europe uses 7MHz in VHF and 8MHz in UHF. I think Aus is 7MHz in both.)

Quote from Jedrusia

I have a new RPI 4 set with the "Astrometa" DVB-T2 receiver and the latest LibreElec operating system (LibreELEC-RPi4.arm-10.0.1.img.gz). My problem is that no MUXs operating in the VHF band are detected or scanned (for example in Poland MUX8 in the 184.5MHz band.)

Is there any way that I can receive signals in this band?

My receiver is built around integrated circuits: R828D; RTL2832U and Sony CXD2837ER.

The next question is how (also the VHF band) can I receive FM and DAB + radio signals via the KODI application.

Where in the world are you based and what channels are you trying to receive.

The Astrometa DVB-T/T2 tuner is likely to be limited to DVB-T/T2 only (and DVB-T2 may be tricky - at one point only DVB-T was supported because of the split demodulator arrangement and only drivers for the DVB-T demod being originally available)

Whilst the tuner may also be advertised as supporting FM and DAB radio - that requires the tuner to be used with totally different, SDR-style drivers, which are totally separate to DVB drivers, and I don't think there is any support for running in this mode in TV Headend.

(I think in Windows there are drivers and custom software to support this?)