QO-100 Wideband Spectrum Monitor

Latest News and Discussion about the use of the DATV transponder on Es'hail-2
G8HKN
Posts: 13
Joined: Mon Jan 21, 2019 4:04 pm

Re: QO-100 Wideband Spectrum Monitor

Post by G8HKN » Wed Feb 13, 2019 3:39 pm

Tried android smartphone seems to be pot luck if chats stay after about 8 seconds
Although if I scroll back past all those dates on the left till before 7th feb they are there but each day I will have to scroll further.
Anyway new ones do join at the bottom of page.
Netbook and Tablet are ok so must be an Android thing.
G8HKN

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M5TXJ
Posts: 185
Joined: Wed Jul 05, 2017 8:34 pm

Re: QO-100 Wideband Spectrum Monitor

Post by M5TXJ » Thu Feb 14, 2019 1:55 pm

Hi all,

Probably just me but... I'm looking at the wideband spectrum monitor then trying to tune the signals with my Minitiouner. More often than not if the signal is 2000KS/s Minitioune locks on the beacon with a large frequency offset. I am managing to tune RB signals but just getting "bad codec/PID" on the screen, what codec/PID's are people using? To put it in a suitably space orientated way, "learning curve, it is".

73 Dave.

G8DKC
Posts: 249
Joined: Thu Jun 28, 2012 9:39 am

Re: QO-100 Wideband Spectrum Monitor

Post by G8DKC » Thu Feb 14, 2019 2:35 pm

Yes had some of that this morning, my problem is the 1m dish is not good enough quality to get the average signal decoded.

I have decoded several transmissions close to the original yellow line.

So, try latest tuner (build MKII Rx) parts in stock, look out for quality dish.

This one will be lost behind the shack.

Also feedback from users across UK, is the foot print not as flat as thought, North - South.

Are people now using larger Rx dishes than first suggested.

E.G TRX one dish setup could mean, dish size now up to 2-3m

Peter

G8DKC
Posts: 249
Joined: Thu Jun 28, 2012 9:39 am

Re: QO-100 Wideband Spectrum Monitor

Post by G8DKC » Sat Feb 16, 2019 7:37 am

The 15th of February decoding was good, moved dish again back to original location.

Changed to another LNB with more focus adjustment.

Learning curve with "quick change" Frequency, modulation and S/R, can almost decode picture now just looking at Spectrum Monitor :)

Operator error, have changed Low S/R setting in minitioune.ini file 1=ON , now OK, .ini says, decode all below 6500 kS/s.

If left unticked lowest you can decode is 300 kS/s. You all know better than to forget this :o

Yes a better dish, but not as "urgent" as yesterday.

Now to build the MKII Rx with Serit tuner / NIM, missing out on 32APSK, 8PSK etc for a start, another lesson learnt.

I have found a little extender card to add Serit NIM to Mk1 board, but not playing with this at the moment.

Peter

F1SSF
Posts: 73
Joined: Sat Nov 25, 2017 5:14 pm

Re: QO-100 Wideband Spectrum Monitor

Post by F1SSF » Sun Feb 17, 2019 10:48 am

Hi alls,
I have tested WB spectrum, but I have entered "F1SSF 73 test" like Nickname, can you tell me for correct it ?
73 Franck

G7JTT
Posts: 129
Joined: Fri Jun 10, 2016 5:05 pm

Re: QO-100 Wideband Spectrum Monitor

Post by G7JTT » Sun Feb 17, 2019 11:34 am

Hi F1SSF just re type /nick new name for example /nick G7JTT-John and login name will change.

All best John

g8gtz
Posts: 1150
Joined: Wed Apr 07, 2010 6:26 pm

Re: QO-100 Wideband Spectrum Monitor

Post by g8gtz » Sun Feb 17, 2019 11:37 am

This information is on this wiki page:

https://wiki.batc.org.uk/Es%27hail-2_Ground_Station

Noel - G8GTZ

F1SSF
Posts: 73
Joined: Sat Nov 25, 2017 5:14 pm

Re: QO-100 Wideband Spectrum Monitor

Post by F1SSF » Sun Feb 17, 2019 12:05 pm

Thank's
Congratulation for your work!
Franck

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i2NDT
Posts: 53
Joined: Thu Nov 12, 2015 9:26 pm

Re: QO-100 Wideband Spectrum Monitor

Post by i2NDT » Mon Mar 04, 2019 7:26 pm

what is the software used for the WB spectrum monitor?
I am trying do do something similar with a LimeSDR mini and SDR# but I am not satified as I cannot enlarge/expand the vertical scale: I can get only steps of 10dB...

i2NDT Claudio
i2NDT Claudio
Dalmine, Italia

G8GKQ
Site Admin
Posts: 1266
Joined: Sun Mar 22, 2009 1:21 pm

Re: QO-100 Wideband Spectrum Monitor

Post by G8GKQ » Mon Mar 04, 2019 7:36 pm

Claudio

Its a bespoke Linux application written by M0DNY. Based on an Airspy. Details here https://wiki.batc.org.uk/Es%27hail-2_Ground_Station. Code will be published on Github in due course.

Dave

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