Autor Thema: Signal Quality is jumping between 90% and 0%. Bad reception or something else?  (Gelesen 247 mal)

rkk2025

  • Newbie
  • *
  • Beiträge: 2
    • Profil anzeigen
Hi,

I have a Sundtek SkyTV Ultimate (Single) receiver, and the ammount of channels I'm able to tune in have been degraded quite considerably during the last months, which makes me believe that my antenna just shifted and needs readjustments. What confuses me is that the signal quality seems to be eider hight (90%) or it's directly not possible to tune in into a channel. There are other channels that seem to barely be able to tune in, and are extremely blocky. For those blocky channels when running "/opt/bin/mediaclient --readsignal=0 -d /dev/dvb/adapter0/frontend0", it shows that the signal jumps from 90 to 0 and back all over the palace.. same goes for the SATQUALITY. Any idea why this could be happening?

SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:      0 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:      0 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:   1284 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:  60400 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:   1106 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:  14597 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  14%  SNR:   6  BER:   5940 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:  36007 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [                                 ] (  0%) SATQUALITY:  60%  SNR:   6  BER:  38614 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:      0 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:      0 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:  46909 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:  29561 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:    765 FREQ: 1704500    Hz LOCKED:  NO SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:      0 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:      0 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:   1117 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:  53825 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:   1402 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:  11270 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:      0 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:  40161 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:   4886 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [                                 ] (  0%) SATQUALITY:  15%  SNR:   6  BER:    504 FREQ: 1704500    Hz LOCKED:  NO SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:  20082 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  14%  SNR:   6  BER:    658 FREQ: 1704500    Hz LOCKED:  NO SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:  20953 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:    998 FREQ: 1704500    Hz LOCKED:  NO SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:      0 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:   5439 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:      0 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:   1966 FREQ: 1704500    Hz LOCKED:  NO SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [                                 ] (  0%) SATQUALITY:  60%  SNR:   6  BER:      0 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON
SIGNAL: [..............................   ] ( 90%) SATQUALITY:  60%  SNR:   6  BER:      0 FREQ: 1704500    Hz LOCKED: YES SYS: DVB-S2 SYM: 27500000 FEC: FEC_9_10 MOD: QPSK VOLTAGE: H(18V) TONE: ON

How can I interpret the singal strength results here? Is it a good reception or not? Could it be the LNB or Dish related? Noise? Or just bad software settings? Any ideas or extra input?

Sundtek

  • Administrator
  • Hero Member
  • *****
  • Beiträge: 8078
    • Profil anzeigen
Re: Signal Quality is jumping between 90% and 0%. Bad reception or something else?
« Antwort #1 am: Mai 20, 2020, 04:26:01 Vormittag »
You might try to double check the LNB or dish adjustment.

Possibly some mechnism is jumping in to re-tune the transponder in case the signal is too bad (it doesn't make any sense to stay locked on a transponder with high bit error ratio).
Failure is a good thing! I'll fix it

Tryon

  • Newbie
  • *
  • Beiträge: 31
    • Profil anzeigen
Jump Around: Bad reception or something else?
« Antwort #2 am: Mai 23, 2020, 12:24:11 Vormittag »
I can confirm that strong wind/thunderstorm can cause this:
Hi,

I have a Sundtek SkyTV Ultimate (Single) receiver, and the ammount of channels I'm able to tune in have been degraded quite considerably during the last months, which makes me believe that my antenna just shifted and needs readjustments.

    SIGNAL: [..............................   ] ( 90%)
SATQUALITY:  60%           SNR:   6           BER: 0   LOCKED: YES
   IF FREQ: 1704.5 MHz     SYM:  27.5 MS/s    POL: H
   DEL SYS: DVB-S2         MOD:   QPSK        FEC_9_10   BAND: High

How can I interpret the singal strength results here? Is it a good reception or not? Could it be the LNB or Dish related? Noise? Or just bad software settings? Any ideas or extra input?
It would be much easier to adjust with some kind web app which should display all info in large font on tablet! What SNR we should target/be satisfied with? 14?

Tryon

  • Newbie
  • *
  • Beiträge: 31
    • Profil anzeigen
Inspired by Elon?
« Antwort #3 am: Mai 31, 2020, 04:00:04 Nachmittag »
And now something from another level:
Broadcast reliability is above 99.95% and the C-band frequency is resistant to rain-fade. Products to support specific disaster events can be inserted into the broadcast in an ad-hoc manner, including from the International Disaster Charter and NASA.Even at such conferences they mention embarrassing "portable generator". Some activists would suggest:

Transportable solar power system shows the way
Electrical independence is now a reality thanks to the all-new Hubi Power Station. This mobile energy system is the ideal means to provide power in a whole range of applications such as garden offices and hobby rooms, remote cottages and glamping chalets, site offices, field HQs, workshops, large stable blocks and agricultural buildings.

  • It's important for ▬▬▬▬▬▬▬ system users to remember that even if a private company installed the antenna, they also need to know how to set the angles to aim the antenna correctly, since it can move for a variety of reasons, including strong winds associated with thunderstorms. Knowing these basic concepts will avoid unnecessary costs in the future.
  • Finding the signal with the receiver requires more time and patience, because you need to make small changes to the polarization angle and then wait a few minutes after each change to see if it made a difference in the receiver.
  • Finally, additional thanks to ▬▬▬▬▬▬▬▬▬▬▬ at the ▬▬▬ State University of Maryland for his setup and hosting of a ground station, as well as patience allowing multiple site visits.
IS-21-302-WHCH.jpg
Best part in all this is that some residential buildings might be interesting to watch certain 16-9_Test_Card.png from same position.