Posts by ON7NDR

hello all ,

just to let now that h265 is NOT standard included in vlc (3.0.6)

73

Quote from DG7YEO

Unfortunately I have no other supported hardware then the RSP1A.

Tested with carrier recovery gain set to 1, for a while I get nothing int he IQ Plot only a few random drops and sometimes I get a short flap of blue circle with less dots in the middle. After few minutes I then get same picture as above.

Maybe signal is a bit weak, when I look on this in SDR-Console I see the WB beakon only with about 5-6db over noise.

As well I saw that I can read the FEC values in the drop down. But this seems only cosmetic item.

Display More

hello , dg7yeo

Can you please test the mueller and muller filter instead of gardner filter for the beacon. center your frequency from beacon as good you can .

keep also your eyes on actual symbolrate (under middle)

when symbolrate is going higher , slightly go 1 symbolrate up and down. (stabilisation and reset)) time recovery

the symbolrate must stay around 2000

than try carier recovery .start with loop damping full to the right side

give then gain intil you see constellation. then lower to 0 loop damping (ful left side)

keep gain to loop gain to about 3... enable it...

then as last step , choose the fec and then enable also the ldpc ...

tip ,for all lower symbolrates use the gardner filter

it is always best when you start , do not enable the ldpc and also no enable carier.

i hope this info will help you

73 , nico

Hello all , name is nico , call on7ndr

have found this interesting info from a DUAL BAND feed from DD1US for QO-100 es'hailsat2 , homemade by Matthias Bopp himself.

looks very interesting article how matthias has build the dualband feed system with also help from other german amateurs.

go to webpage http://www.dd1us.de/

then choose ,>> " home downloads"

here you will see the dualband feed descibed , article is in PDF format , since it is 5 mb i can not post it here as attachment sorry

hope you enjoy reading his article to . good job from matthias

73 nico

picture dualband Es'hailsat DD1US feed

Quote from IU2KAC

Infine prima accoglienza a 1 MS / s !!

Happy IU2KAC now that the software 2.0.9 is working

for the rb and simplex segment

73 . nico....on7ndr

always check real symbolrate (under middle ) for the actual symbolrate running...

Quote from IU2KAC

HI Markro92,

Ho provato la nuova versione (2.0.8), ma non riesco a decodificare i segnali inferiore a 1 MS ....Can you decode with low MS? ..

IU2KAC

Version 2.0.8 decoding fine for also low symbolrate's , use gardner filter(rb) instead of mueller and muller ted (wb) in time recovery window.. (up right)

Also for all symbolrate below 500 ,(333,250,125,66) i change the samplerate/bandwith to 960000 instead of 2400000. just for info

images from stations with rtl 2832u dongle decoded and this 2.0.8 version.

G7JTT on 250 Ks , John , thanks for the test transmission on 250 Ks dvbs2

F3YX ON 333 Ks DVBS-2

DL9OBU richard with 500 KS DVBS2- MODE

first transmission from poland SQ6QV legnica on 250 ks

Helmut dg3khs cologne/keulen on 1000 Ks

Cpu is only intel pentium 3 model 3220 >> DUAL CORE and 8 RAM Memory ,

Antenna channel master 1,2 meter offset dish and the normal rtl dongle (dvbt-dab-fm..) rtl2832u /rt820t2 tuner inside.. used on the LATEST 2.0.8 version amsat-gui

CPU-Z info
                      

The normal DRAM frequency from the DDR3 memory is 1333 mhz

Since it is dual core cpu , it is splitted into the half speed DRAM
computer since 2012 in use....

PE1CHY , Rob only 5.5 db C/N (monitor batc) decoding on 1000 Ks

Quote from ik1hgi Tony

Markro92 Hi this is my computer .. you said you did a new version 2.0.7 for the problems of Tony ik1hg in the message N #120 i, has this point will not present more info I do not know where the problem

I have a PC for 2 years but to see a DATV Beacon I don't go and get another PC now if I find some opportunities ok but new I don't think so I have 3 PCs 64 and a 32 thanks 73 Tony ik1hgi

https://valid.x86.fr/2c23iu

Display More

Hey tony ik1hgi , can you contact me via skype..

i see that you are on skype..

have added you in skype...please accept invitation ..

maybe i can help you to see what is wrong..

my computer is about 6 years old , but it is working..

let see... 73 ciao

Happy Easter to you &family , Nico , on7ndr

decoded image Rocco ik8xld @ 333 Ks dvbs2 amsat-gui

hello all,

i just give this as additional info .

i have a universal lnb with a outside line amplifier johansson 9604 type(waterproof)

the line amplifier is direct connected to the lnb ..... mounted @lnb

so a additional amp is used to give a 10 db more gain on 743 Mhz

the line amp gives 18 db @2300 mhz , 13 @950mhz...

ok , you can ask yourself way? the s/n c/n stays the same ? yes.

have noticed that then the analog bb gain is set quite what lower in the software himself and the decoding goes better because i don't have to give extra analog bb gain from the rtl analog amp inside.... to see for example the orange waterfall on beacon coming on waterfall.

have done test with the line amp and without the lnb amp on beacon for example , in my case it was always better with the sat line amp inbetween. not a inline type

these are not waterproofwelded)

can someone do the same please as here noticed ? please share it or post it on this forum

is this info also better at your side with a regular rtl2832u?

the satrx (stb) is set to 10300 with horizontal polarisation 19 volt.

then the loop out from the same satrx (stb) has no dc , but only IF (rf) goes out

check/messure the voltage on the coax of the loop out , only RF (IF) may come out , NO VOLTAGE !

then connect the coax to the rtl dongle /rtl2832 /rtl2838

then run software.....

73 nico

I8LYL former I0LYL, luciano jn61fq

I have the same problem with the beacon , but i don't need it for decoding the beacon. it is a start to play with the settings of sofware

i will not buy a 6 core /4 ghz to only have the beacon more

when i want to see the beacon , i use my regular normal satreceiver and a modified lnb

have seen the beacon enough now...:-) , now every second i think now...

you will see, with the rtl dongle and 1000 ks sr the decoding is very stabil and your cpu can manage it enough

so, when decoding 1000 / 500 / 333 ks/250 kS with a 2400000 samplerate /bandwith .

the buffer stays 0/8192

when that is not the case, your cpu is to light, or someting else wrong.

use gardner filter for 1000sr and lower Sr

MM filter is only used for beacon at 2Ms

i have also a dualcore i3 @3.3 ghz and 8 ram

image from pe1ash with rtl dongle on 1000 ks , no fallout , no vlc crashing , 30 minutes full tx time , stabil buffering 0/8192

nico , on7ndr , jo11sf

73 luciano

DD0KP , thanks for the flowers

Hello to your All, Name is nico

Yesterday with makro92 we did a test online to get the amsat-dl gui working.

Computer is a I3 penthium dual core : 3320 model and speed 3,3 ghz

Memory is 8 RAM;

Cpu-z was used to see first if all nessesary support was in the pc

After some steps from makro92 online ( with teamviewer) the software dvbs2-gui was also decoding the beacon with a rtl2832u stick/dongle with great succes.

tuner inside is a rt820t2.

Here is a screenshot from the decoding and VLC playing video/audio in the background , decoding was live (real time)

Thanks to makro92 his help online and typing also important information i can now decode it easy on my own.

Another screenshot from the decoding in progress and constellation....

73 . Thanks for reading this tread \ hope it will work also on your side and help you.

Nico , ON7NDR