Posts by satesco

  • RF notch filter for suppressing intense interference

    Quote from strannik

    You probably remember my post about the impossibility of reception in the C range due to powerful out-of-band interference in the "Small talk" section.
    I thought a lot about how to suppress this interference or the interference that I have at 10730 MHz and interferes with reception at the beginning and throughout the Ku range.
    I thought for a long time, and recently calculated and made a rejection filter in five minutes, which is shown in the figure

    ...

    Welcome back after a long time :74:, when I wondered what happened to you under war conditions in your country. I hope you are well.

    And as usual, you don't come empty-handed, but with an invention, which interests me at least. That filter you made might be valid for me, too, since I have interference in the Ku-band. Did you try it in C-band, if you can receive this band?

    I was wondering if it would be possible to make one for me, for a fee, including shipment.
    What do you say? :3:

  • 68.5°E Intelsat 20

    Same feeds this time with the same parameters today:

  • 83.0°E GSat-10

    11460 V,15000,5/6,16APSK-GS, new,

    11478 V,15000,5/6,16APSK-GS, new.

    I'm not sure, but I hope the two transponders found will be/are at 83.0E.

    It would be the first time I've ever tried to lock such frequencies in Ku-band at this position, so I'm a bit reluctant to say that they are from 83.0E. They could also be from 84.3E(OV5-4) or Intelsat 907(?).

    The only clue that I am at 83.0E is that I have a couple of transponders coming into horizontal that I can't lock.

    Therefore, I would ask those who can visit these positions to verify my assumption.

  • Digital Devices Max M2

    Hi, SaTom,

    Since neither you nor I has tested this card, it is risky to comment on its qualities or the tuner's sensitivity to weak signals.
    First, we don't know which demodulator it is equipped with or which tuner model it uses.

    I initially thought that this Max M2 is Digital Device's version of what TBS's 6903x card is, like the Max SX8 versus the 6909x, but we don't know if the former would implement the sid135(?) chip, like the SX8 has. But I'm unsure about this, since I don't know or haven't found a chip135 that knows the three standards, S/C/T(?). If the M2 has such a chip, then my assumption that this is the 6903x variant, minus C/T, is correct.

    In that case, Digital Device's offering for the amateur can be considered, and yes, it is an alternative to TBS cards with this chip, both for amateurs and professionals. But, for the latter, it remains a big "but" as long as it doesn't support tools/applications capable of making the difference from TBS cards. This aspect is most important for those exploring positions/satellites to find signal, even unlocked, and transponders, with programs or without. For these hobbyists, it is the most relevant aspect of the DVB cards on the market.

    I don't know what information about receptions the DDL4M tool you're talking about offers, which is important when we find a new transponder. But if they don't search for it and see it, then we are left with the bitter taste of a futile search. That's the primary purpose of signal searchers: finding hard-to-find and locked frequencies. All other searches are secondary.

    For enthusiasts, Crazyscan and related applications from any card manufacturer are the only alternatives at the moment. That's why I've expressed myself not once that the best DVB cards for enthusiasts are 6983/6903 for DVB-S2 mode and 6903X/6909x for S2X extension, for one of the most important reasons: they can be used with Crazyscan(and neumoDVB under Linux).

    If what has been said about them (Max cards) being designed differently from TBS's is true, it would be interesting to see how they can be used practically in Cat's applications, which provide all the relevant information when finding a transponder. Unfortunately, this is a vital thing these Max cards don't know.

    Again, the comparison with the GoldMaster SR525 is a bit exaggerated because this device doesn't know how to read symbol rates under 1000 or those over 45000 Mbps. I admit it is a good receiver, but it is more for a regular consumer. Its value has increased after you implemented the R.A.M.F SNR function for those who want to tune the antenna well.

    Of course, my opinion does not have to be shared by all enthusiasts, especially as I know that arguments are not enough. Nor have I set out to be academic. I spoke more from a practical point of view regarding the DVB applications we have today. We use them to find parameters that are impossible to see with other tools.

    Let it not be understood that I'm against Device Digital cards. On the contrary, I'm glad they exist. If what has been said about them being designed differently from TBS's is true, it would be interesting to see how they can be used practically by an enthusiast looking for new signals and frequencies.

    Best regards :3:

  • Digital Devices Max M2

    Quote from SaTom

    Dear all!

    This morning surfing in the internet, and What do I see, now avaiable the Digital Devices Max M2 :-) This is Super!

    https://www.digital-devices.eu/shop/en/Digita…ner-Card/820022

    I would buy it, but question, has anyone using this tool ?
    If yes, please share usage experiences!

    Best regards,
    SaTom

    Super, indeed, as you say, but it's for those who want access to the three standards. From that point of view, it may be the best card on the market.

    Unfortunately, these cards from Digital Device cannot be used with crazycat's applications. I admit that looks good, physically speaking.

    Of course, I didn't buy it to verify what I said before. Still, if it offers the same support as the Max SX8 and doesn't offer signal access to CrazyCat's applications, then as a hobbyist, I'm not interested, even though it was designed and built for this purpose, to watch/listen to TV/Radio programs. That's not to say I wouldn't be interested in a review of this card.

    I hope I'm not wrong, but most people on this forum seek signals, not TV programs(?). Although not intended, crazycat, together with the TBS cards, has created a category, it is true, smaller, of such enthusiasts.

    I would very much like to be wrong about what will happen next with applications that this card supports. :3:

  • 95.0°E SES-8/12

    Quote from N_Stanislav

    Middle East beam from SES8 and some spot beams from SES12, No any changes

    ...

    Here is what I found at 95.0E(SES-12) in my area during this period.

    It's funny, but according to the SES maps at 95.0E, the spot you're talking about looks like it's coming from Central/South Asia, not the Middle East, although the latter seems possible too.
    FlySat gives it to the transponders subband in the South Asian spot, which seems wrong; getting 11dB on 10870 V in my area with my dish would be too good to be true(!?).

    What is the difference in the signal strength on 10870 V,11154 V, and 10990 V, 11026 V on your spectrum?. It's the same as mine, but 11154 V didn't find it this time.

    Yes, this is on the Central Asia spot; however, 10980 V,11026 V, and 11094 V are on the Middle East beam.

    This is where KooLy, who is in the area, could help. :3: