Exploring Russian and International Analog TV From Leaky Cable TV Networks via the Airspy Server Network

For a few days now, an online SDR has been broadcasting from Novosibirsk/Russia. 
In contrast to the previously known SDRs, with the leaky cable networks, only 3 terrestrial channels are broadcast here. After a long search I found a frequency table. But I'm not sure whether the listed channels match.

Kanal/ Frequenz/ Sender
25 / 503.25 /Freitag! / Werbung MПятница! / реклама M Регион

33 / 567.25 / Disney / OOO Werbung – Region Media Group
реклама OOO «Регион Медиа Групп»

51 / 711,25 / Ю / реклама OOO «Регион Медиа Групп»

Micha

This is all a big deal. As a technician I throw my hands up in my head, as an analogue TV fan I think it’s great.
So you can roughly summarize that there are leaky cable networks across Russia and disrupting the surrounding area.
The signals emitted interfere and even mix with each other so that identification is sometimes impossible. I’ll even go so far as to say that Ivan, Alexey and Ilya’s online SDRs didn’t think about the distribution of TV signals (at least not primarily).
I’ve spent the last few hours confirming Alexey’s list using live images. I actually discovered a few more streams. But somehow nothing agrees here. This can have several reasons, including time delays, regional programs, or, or. Doesn’t matter.

Digital programs with their 8MHz packages do not fit into the online SDRs. At least not in one go. Because the signals are interleaved, decoding is not possible.
Hello Kirill, it’s nice that you still have analog VHF transmitters. Despite TV DXing, I haven’t met them yet and I’ve never heard of them before.
Thanks Micha

Yakutsk also has a problem with leaking cable TV signals. There are two providers in the city: Beeline (former Helios-TV, also they used to have an analogue MMDS network until 2007) and Transtelecom (TTK). Gelios has a very old and leaky network, it uses frequencies from 111 to 583 MHz, digital TV is located somewhere in the 300-380 MHz area. And here it is in some parts of the city very much interferes with TV-DXing (in the region still operates a large network of terrestrial analogue TV NVK Sakha, by the way, which has several dozen transmitters in VHF Band I), not to mention the reception of Satcom and other satellites. TTK, which has been operating for 11 years, on the contrary has a pretty good network without any Soviet cables (their network does not interfere with reception on the outdoor antenna) Digital TV is clearly a priority for them in terms of cable capacity, they have placed it in the 110-230 MHz area, but strangely one of the multiplexes overlaps the terrestrial analogue channel on VHF ch. R7 (Yakutia24), there are small problems with stuttering of a couple of channels, fortunately they are TV shops. Analogue in contrast to Helios is located from 231 to 850 MHz, the upper part of the spectrum is noticeably affected by LTE, a couple of channels are located in the area of terrestrial digital TV, they are impossible to watch. What is rare for cable networks absolutely all analogue channels use the SECAM colour system. No one transmits radio in cable networks anymore, only via DVB.

Our cable networks are holey 🙂 cable network #2 was built in 1996 and they haven’t changed cables or done maintenance since then. After all these years, the cables at the top of the range show very poorly, but the bottom of the range still works well. They fixed this problem with a powerful amplifier that boosts the high frequencies to a moderate signal and the low frequencies to a crazy level that can be heard far beyond the cable. This cable is owned by the giant Rostelecom, who bought it along with the internet service provider. 90% of subscribers do not pay for its operation, and I hope that soon it will be completely disconnected in favor of IPTV.
The second Intersvyazi network was launched in 2015, and it works differently. Optical cable is brought into the house, and from the telecom equipment comes coaxial with a full set of frequencies. I don’t know exactly how they assemble this pool of frequencies, but there is virtually no interference from them. But they also plan to do away with analog broadcasting, leaving only DVB-C. Unfortunately, they interfere with FM reception with their internet.
Twisted pair as a huge conductor gives interference in all bands in the form of frequencies with hum. In general, the situation is the same all over the country. Cable networks are wearing out and the TV charges do not match the quality, people are disconnecting it or not paying for it.
In some cities FM radio still works on cable, just bring the receiver to the cable and it will Catching radio stations

I just checked. Indeed, it does not work through Spy Verter. It is necessary to enable full IQ and minimum frequency 2.4 MHz or better 4.8 MHz. Then it probably won’t work.

Connected. Come in. 
sdr://178.46.161.201:5560/
Hopefully the Airspy mini will suffice. R2 is at a remote site.

Hello Ivan. 
Your information is great, as is your offer. I would never have looked for TV programs in the FM range (except in the fringe range up to 88MHz), 

My plan is to make a small documentary about analog television in Russia and South America. Your offer is very helpful.

OK, an intended signal activation would be a great thing and, above all, unique in SDR online history. I guess this has never happened before (this week would be great).
But I'm afraid that a public date will attract thousands of people and then I won't get a chance...

I can well imagine that analogue television is no longer popular, but that's not the point. Rather, it's about finding the last remaining channels. The discoveries about online SDRs are pure coincidences. In this context, it is also a shame that some people in Central and South America were only online for a very short time. Maybe some of your people will get in touch

Thanks Micha

Ivan Abilev/ Troitsk

Bild      Ton      Ton
           65,500  65.750
 77.153    83,500  83.750
111.256  117.500 117.750
119.258  125.500 125.750
127.253  133.500 133.750 (Testton) Kanal Kultura
135.258    ?      ?

Ilya Pastukhov/ Miass

Bild      Ton 1   Ton 2
111.185  gestört   117,750
119.267  125.500  125.750
127.254  133.500  133.750 (Testton) Kanal Kultura
135.227  141.500  141.750 Rossija 24
143.248    ?          ?

Anonymus/ Achinsk
Bild     Ton 1    Ton 2   Programm
111.265  117.764
119.280  125.768 
127.315  133.753 
135.275  141.772      Kanal Kultura ?/ Nachts Testbild/ Test-Ton
143.267  149.757      Telekanal Rossia ?
151.232  157.738
159.255  165.754
167.243  173.727  173.755 unterschiedliche Töne
175.254  182.727  181.754
191.254  197.754     
199.206

Hello. What exactly do you want to know? The servers of Troitsk and Miass are installed in a residential building, and the cable TV signal penetrates through the terrestrial antennas. You got that right. Signals from these cables on SDR can be received at a distance of up to 1 kilometre from residential houses 

Thanks for publishing.
But a few explanations seem necessary. Only with the Russian SDRs do the programs radiate into the antenna. I think terrestrial broadcasting is unlikely because the TV programs also mix with terrestrial radio signals, eg AERO-Voice and weather satellites (NOAA). The antenna must therefore be attached to the window or outside. A leaky cable network can certainly radiate in here, but a weather satellite in the indoor area is unlikely to. The only strange thing is that all 3 providers in the cities of Miass / Achinsk / Troitsk
have the same problem. After all, there are up to 2000km between the cities.
In South America these are regular terrestrial broadcasts. But be careful! An SDR in Brazil receives the programs from Urugay.
The whole story is difficult to understand because some SDRs are only online for a short time, constantly change the antenna or gain, are not designed for TV reception at all and terrestrial TV is switched off (e.g. Indonesia)
greetings Micha