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pinky

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Reply with quote  #1 
Hi All,

I was going to pick back up on my feed monitoring projects and went to screw in the coax onto the F-connector on my TBS 5927 and found that the F-connector barrel was detached from the frame of the PCB mount [eek] it was just spinning in place and if I kept turning it would have broken off the internal wire from the center conductor.

I'll probably get a new connector and solder it on, but I'm also tempted to grab a new receiver if there is anything better (will still fix this one, but could use it secondary).

What I'm looking for is (some combination of) what is best supported by the crazycat and/or v4l drivers, what has working hardware blind scan (tell box to scan a range and it does it internally and reports back rather than relying on software directing it to tune and step through symbol rates manually).

Primary OS I would be using it in is linux, and would probably need open source drivers because I may try to run this from an Arm based Single Board Computer (Khadas VIM3) where I will need to compile the entire OS.

Ability to lock low symbol rates would also be nice, I also like trying to find interesting data and radio feeds.

I have had a lot of trouble with a 240cm fortec star dish and C2-PLL LNBF on a lot of broadcast feeds that seem like they should be plenty strong (I forget what exactly, they were 30Msps HD feeds I think..) .. so wondering if that was a lack of sensitivity in this receiver. I did have a fairly long cable with an inline amp I finally put in between which didn't seem to help much .. I will likely upgrade my coax soon, and if all goes well finally get a much better C-band dish, probably a 12' mesh on H-H motor.

Thanks for reading!

Mike


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TBS 5927, 36" offset dish on DG320 motor with Invacom QPH-031 .. 2.4m fortec star (not yet on a polar mount, looking to buy/make one) with C2PLL LNB [cool]
boblop

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Reply with quote  #2 
For a new receiver, well talk with Rick. For a bigger dish see my post under the LNBF  question thread.
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Never throw it away--cause guys need stuff--a lot of stuff

pinky

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Reply with quote  #3 
Thanks for the reply, were you suggesting the dish on trailer? [love] I would like that but .. a bit pricey. I do probably want to get a ortho feed so I can get both polarity at once ideally .. but then I guess you're still stuck when you want to switch to circular .. or maybe you could use a phasing line coupling both LNBs that you electrically switch in (and probably need LNBs that use external reference oscillator)?

I do have a neat LNB that takes an external 10mhz reference (good for really narrow band stuff), I have one for C and one for X band.. probably should have bought two for C band for mounting on an ortho feed one day. The one for X will have to wait until I have a dish on a rotor that can do both Azimuth and Elevation .. for more general snooping around with a software defined radio rather than the feed hunting (see like uhf-satcom.com for neat stuff on this)..

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TBS 5927, 36" offset dish on DG320 motor with Invacom QPH-031 .. 2.4m fortec star (not yet on a polar mount, looking to buy/make one) with C2PLL LNB [cool]
DarkSky

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Reply with quote  #4 
Quote:
Originally Posted by pinky
Primary OS I would be using it in is linux, and would probably need open source drivers because I may try to run this from an Arm based Single Board Computer (Khadas VIM3) where I will need to compile the entire OS.


I do not have a vim3 but if it was me I would start with this image. The kernel is sitting at 5.3.0 right now which would make things go easier with your kernel transition with Crazycat, v4l or even UDL's using the various media_build's. There may be similar images out there that I do not know of but for obvious reasons I am partial to Manjaro Arm.

Be sure you update the files in the image after you load it up for the first time to pull in the new kernel and then reboot with:

sudo pacman -Syu


https://osdn.net/projects/manjaro-arm/storage/vim3/xfce/19.08/

One issue with media_build and some distro's is they configure some of the dvb modules and some of modules they depend on as =y instead of =m in the .config so you may have to take a look at the config file and possibly make changes and recompile the kernel. The PKGBUILD related files for this kernel is here:

https://gitlab.manjaro.org/manjaro-arm/packages/core/linux-vim3

pinky

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Reply with quote  #5 
Thanks! This is interesting! I normally gravitate towards deb based distros, but will check this out .. Seems surprising there is no armbian yet for the vim3, but I haven't really dug in much on it yet. I would probably be running it headless, with X11 over ssh for gui tools like the spectrum plotter I've seen being used, and dvbstream to actually watch video.. will look more into Manjaro and Arch in general as I've never used it.
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TBS 5927, 36" offset dish on DG320 motor with Invacom QPH-031 .. 2.4m fortec star (not yet on a polar mount, looking to buy/make one) with C2PLL LNB [cool]
DarkSky

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Reply with quote  #6 
I have been using arch for a few years now. Majortom and my pi images we post here are all arch.

I was asked a while back to join the Manjaro ARM Team so I switched everything here to Manjaro. It is an arch fork but geared to be more user friendly for people; especially for new people switching over from windows.

They are sending me a vim2 in a couple of weeks to test ( as no one the development team has one ) so they can have a vim2 image also.
DarkSky

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Reply with quote  #7 
Forgot to mention that this image has an OEM install where you set what user and password you want and also root's password. It also has a box for your user to be added to additional groups. I would suggest you put in audio and video groups in the box. This is something where majortom ran into an issue with so the box was added.

When the OEM setup is done it will resize the root partition and reboot.
pinky

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Reply with quote  #8 
Thanks again! So just curious what receiver are you running with it?
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TBS 5927, 36" offset dish on DG320 motor with Invacom QPH-031 .. 2.4m fortec star (not yet on a polar mount, looking to buy/make one) with C2PLL LNB [cool]
wejones

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Reply with quote  #9 
Quote:
Originally Posted by pinky
Hi All,

I was going to pick back up on my feed monitoring projects and went to screw in the coax onto the F-connector on my TBS 5927 and found that the F-connector barrel was detached from the frame of the PCB mount [eek] it was just spinning in place and if I kept turning it would have broken off the internal wire from the center conductor.
 ......



I noticed the exact same thing with respect to the F connector being loose on my 5927, apparently it is not just an isolated issue.  I too think that I noticed it before any damage was done, although I lazily have since neglected to tighten it up, and have re-discovered the issue on several occasions. On reading the above, I "intend" to get up from my recliner, and go downstairs and tighten up the connector.   😉




DarkSky

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Reply with quote  #10 
Quote:
Originally Posted by pinky
Thanks again! So just curious what receiver are you running with it?


I do not use my Rpi's hardly at all other than testing new kernels. In reality I hardly ever watch anything off satellite anymore. I have 1 usb device for dvb; a Geniatech HD Star which at this time will not do a Spectrum Scan but will work if the right info is manually used and the rest are ATSC. UDL's kernel modules are installed on every device I have so I have no experience with other kernels. Majortom has several usb devices for dvb but one that stands out for me I guess is this one:

https://www.rickssatelliteusa.com/tbs5520se.htm

I do not believe the 5927 will work with UDL's modules. Crazycat has quite a bit support for TBS devices.
majortom

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Reply with quote  #11 
adding on to darksky's last post...
from the readme in the v4l-updatelee repo:

#
# Tested with
#
# Prof 7301, 7500, 8000
# TBS 6925, 5922, 5925, 5980, 6908, 6903, 5520SE
# Skystar 2 eXpress HD
# Genpix Skywalker-1
# Hauppauge 950Q, 955Q, Aero-m, Wintv DualHD
# Mygica (Mohu) A681
# Others are reported working as well, but havent personally tested them

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Perfect 10 7.5' mesh Chapparal C/Ku Co-Rotor feed, Norsat 8115 CBAND, Norsat 4106A Ku Thomson Saginaw Actuator, Vbox positioner,
Home Brew Polarotor683 Servo circuit. Openbox S9, Prof7500, v4l-updatelee linux drivers installed.
DB8E/VHF Yagi rotor FM Bandstop ap-8700 preamp 8way split LG lcd.
ricardo's geo-orbit archive: https://web.archive.org/web/20071202191450/http://www.geo-orbit.org:80/sizepgs/tuningp2.html

DarkSky

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Reply with quote  #12 
pinky:

Which atsc/dvb usb devices do you currently have?
pinky

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Reply with quote  #13 
An old DVBWorld 2102 which I don't really intend on using anymore, and the TBS 5927 with broken coax connector I need to fix. I thought the TBS had hardware blind scan support but turns out none of the drivers seemed to implement it (I guess maybe it would in windows but thats kinda useless for me).. but I could have been wrong about that. Just wondering what the 'best' is for fast blind scans and symbol rate scans when feed hunting. I'd like to (eventually) write some software (in python ideally) that would automatically scan for me throughout the day and maybe notify me when new feeds pop up.

Another annoyance I ran across with the TBS driver is that it didn't support receiving DiSEq messages, I was trying to request status from my motor I use on my Ku dish (DG320) and was not seeing the reply, then dug into the driver and found it had no code to receive replies).

Still not sure if I want to run the udl or crazycat driver/software either.. I guess it depends on the specific device I choose and how well it is supported.

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TBS 5927, 36" offset dish on DG320 motor with Invacom QPH-031 .. 2.4m fortec star (not yet on a polar mount, looking to buy/make one) with C2PLL LNB [cool]
DarkSky

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Reply with quote  #14 
Quote:
Originally Posted by pinky
An old DVBWorld 2102 which I don't really intend on using anymore, and the TBS 5927 with broken coax connector I need to fix.


I do not know if the DVBWORLD will work with UDL's modules or not but the 5927 will not.

Quote:
Originally Posted by pinky
I thought the TBS had hardware blind scan support but turns out none of the drivers seemed to implement it. Just wondering what the 'best' is for fast blind scans and symbol rate scans when feed hunting.


UDL's companion updateDVB program will do a blindscan if the device is supported. The supported TBS usb devices are getting scarce. The 5925 and 5980 ones have been discontinued. Majortom and UDL have the 5520SE working pretty good but I think it is still a work in progress though if I remember right. I believe it does a Spectrum Scan but do not know about a Blind Scan.


Quote:
Originally Posted by pinky
Another annoyance I ran across with the TBS driver is that it didn't support receiving DiSEq messages, I was trying to request status from my motor I use on my Ku dish (DG320) and was not seeing the reply, then dug into the driver and found it had no code to receive replies).


UDL's updateDVB will handle moving the dish and also Kaffeine and tvheadend.


Quote:
Originally Posted by pinky
Still not sure if I want to run the udl or crazycat driver/software either.. I guess it depends on the specific device I choose and how well it is supported.


If you decide to try UDL's modules today I ported over his modules to the Manjaro ARM kernel 5.3 and cross compiled the kernel on my x64 and created install packages (kernel, kernel headers & user space headers). I have no way of testing here on the vim3 as I do not have one but you are welcome to see what it does.

UpdateDVB also will stream a tp over the home lan.

Pic1 is updateDVB doing a Spectrum Scan
Pic2 is updateDVB tuning window
Pic3 is updateDVB IQ Plot
Pic4 is updateDVB Settings showing Diseqc v1.2 and v1.3 Settings

Attached Images
Click image for larger version - Name: spectrum-scan.png, Views: 20, Size: 106.75 KB  Click image for larger version - Name: tuning-window.png, Views: 22, Size: 116.42 KB  Click image for larger version - Name: iq-plot.png, Views: 22, Size: 58.13 KB  Click image for larger version - Name: go-to.png, Views: 20, Size: 42.60 KB 

pinky

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Reply with quote  #15 
Thanks! Your sig says you have a Prof 7500 but the screenshot also shows 8000 .. I might have just impulse bought the 7500 but it is out of stock at Rick's.. I am mulling over for future expansion the idea of an external PCI cage that can connect with USB3 (if such a thing exists?) .. Eventually I might like to have around 4 devices doing automated scanning..

How long does it take to do a blind scan with the Prof and the UDL drivers?

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TBS 5927, 36" offset dish on DG320 motor with Invacom QPH-031 .. 2.4m fortec star (not yet on a polar mount, looking to buy/make one) with C2PLL LNB [cool]
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Fellow Members, your posts are welcome here! Do not worry about posting everything perfect. Different receivers and LNB's will give you different Frequencies and Symbol Rates. Some set top boxes, PCI cards and USB receivers, Do Not Require all of the same information that others may need. It is not Required to post everything that others may need to tune in a feed. It is just most important to share the find. We can always adjust the Frequency and Symbol Rates and try the various Modulations and FEC's on our own receivers until we get a lock and then give a polite reply with what works for your receiver, as that information might help others as well. We all appreciate the efforts and energy of the Posters!

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