Spectrum display

Messagede oh6mqm » Mer 23 Nov 2011 21:03

HEllo

Has there been ideas or needs to add also spectrum display to monitor.
Just scan area then then show signal level similar way like could be seen in some ham radio display (Bandscope).

Br. Esko P
oh6mqm
 
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Re: Spectrum display

Messagede F6DZP » Mar 29 Nov 2011 18:09

hello,
yes I thought about spectrum before showing constellations...
I have made some test very long time ago.
It can work but there are some limits:
-the tuner cannot show spectrum and decode DVB at same time
- sweep for showing spectrum is relatively slow.
but why not....
I will make extra test to see if it is the worth.

Jean Pierre F6DZP
F6DZP
 
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Re: Spectrum display

Messagede oh6mqm » Mar 29 Nov 2011 19:07

F6DZP a écrit:hello,
yes I thought about spectrum before showing constellations...
I have made some test very long time ago.
It can work but there are some limits:
-the tuner cannot show spectrum and decode DVB at same time
- sweep for showing spectrum is relatively slow.
but why not....
I will make extra test to see if it is the worth.

Jean Pierre F6DZP


-Tuner does not need to decode DBV at same time.
-I understand speed problem.

Typically need is not to scall all complete band.
One idea could be to have 3 parameter in spectrum scanning.
MIN-MAX-STEP.
By doing this way also scanning time is less and
is done only for nesessary band area.

Another topics from DATV list
from modulators (F1GE in France sells them).
I could not find contact information to him
Could you help ?
oh6mqm
 
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Inscription: 19 Juin 2011

Re: Spectrum display

Messagede F6DZP » Mer 30 Nov 2011 22:23

hello,
I am not at home until next Monday.
I will look next week what I can do for spectrum display

for equipment F1GE has made some advert like that:
http://fr.mg40.mail.yahoo.com/neo/launc ... 36lpss0385
you can contact him to know what kind of equipment he offers now.

Jean Pierre F6DZP
F6DZP
 
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Re: Spectrum display

Messagede oh6mqm » Sam 3 Déc 2011 08:28

F6DZP a écrit:hello,

for equipment F1GE has made some advert like that:
http://fr.mg40.mail.yahoo.com/neo/launc ... 36lpss0385
you can contact him to know what kind of equipment he offers now.

Jean Pierre F6DZP


Hello

That link just bring me to yahoo mail start page.
There was no web site or e-mail address ?
oh6mqm
 
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Re: Spectrum display

Messagede F6DZP » Sam 3 Déc 2011 13:28

The original message was:


Disponibles:
nombreux matériel TV et DATV Pro en rack 19" récent:
- Amplis UHF Velec et EBIM (DVBT) de 1 W à 25 W (W numériques genre TDF !!)
- Transposeurs
- rémetteurs DVBT
- Filtres emission
- modulateurs analogiques
- Mires vidéo etc..
contact en direct
73'
Marcel

email:
f1ge <f1ge@orange.fr>

I don't know if he accept to send equipment ...
If I can help, ask me.

Jean Pierre F6DZP
F6DZP
 
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Re: Spectrum display

Messagede oh6mqm » Lun 5 Déc 2011 09:34

F6DZP a écrit:The original message was:


Disponibles:
nombreux matériel TV et DATV Pro en rack 19" récent:
- Amplis UHF Velec et EBIM (DVBT) de 1 W à 25 W (W numériques genre TDF !!)
- Transposeurs
- rémetteurs DVBT
- Filtres emission
- modulateurs analogiques
- Mires vidéo etc..
contact en direct
73'
Marcel

email:
f1ge <f1ge@orange.fr>

I don't know if he accept to send equipment ...
If I can help, ask me.

Jean Pierre F6DZP


Hello

Thanks from info.
I will contact him
oh6mqm
 
Messages: 19
Inscription: 19 Juin 2011

Re: Spectrum display

Messagede oh6mqm » Dim 18 Déc 2011 19:24

F6DZP a écrit:hello,
yes I thought about spectrum before showing constellations...
I have made some test very long time ago.
It can work but there are some limits:
-the tuner cannot show spectrum and decode DVB at same time
- sweep for showing spectrum is relatively slow.
but why not....
I will make extra test to see if it is the worth.

Jean Pierre F6DZP


Hello

Did you have time to test spectrum display
oh6mqm
 
Messages: 19
Inscription: 19 Juin 2011

Re: Spectrum display

Messagede oh6mqm » Ven 20 Avr 2012 13:05

oh6mqm a écrit:
F6DZP a écrit:hello,
yes I thought about spectrum before showing constellations...
I have made some test very long time ago.
It can work but there are some limits:
-the tuner cannot show spectrum and decode DVB at same time
- sweep for showing spectrum is relatively slow.
but why not....
I will make extra test to see if it is the worth.

Jean Pierre F6DZP


Hello

Did you have time to test spectrum display


Just to check if there has been some activity on this topic ?
oh6mqm
 
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Inscription: 19 Juin 2011

Re: Spectrum display

Messagede F6DZP » Ven 20 Avr 2012 20:39

Yes I have made some tests to render the spectrum after our last discussion. But not with very good result. I think it's not possible because the Tuner bandwidth cannot be set to low value so we always made measure of RF level with a large bandwidth. So the spectrum can be something usable to scan all the Tuner band just to find broadcast satellite frequency, but not to observe spectrum shoulders as I wished.

Jean Pierre F6DZP
F6DZP
 
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