** Help** Octagon LNB (25 Mhz) GPS Mod

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glen_turner2002
Posts: 36
Joined: Wed Mar 25, 2015 5:21 pm

** Help** Octagon LNB (25 Mhz) GPS Mod

Post by glen_turner2002 » Fri Nov 02, 2018 5:28 pm

Hi, My clever TV friends,

I'm looking into setting up a Es'Hailsat station in our club and I'm trying to find info on the LNB the BATC have bought for the monitor station. I'd like to buy an octagon LNB with the Leo Bodnar GPS locked frequency reference but I'm struggling to find any info.
I need to find where to buy the 25Mhz LO LNB and the info to do the modification.

Can anyone help me please? Maybe give me a few links to the info?

Thank You...


Glen - G7MNP
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glen_turner2002
Posts: 36
Joined: Wed Mar 25, 2015 5:21 pm

Re: ** Help** Octagon LNB (25 Mhz) GPS Mod

Post by glen_turner2002 » Sat Nov 03, 2018 1:15 pm

Oh dear, doesn't anyone know how this is done. :(
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g0mjw
Posts: 2346
Joined: Sat Sep 20, 2014 9:15 am

Re: ** Help** Octagon LNB (25 Mhz) GPS Mod

Post by g0mjw » Sat Nov 03, 2018 1:37 pm

We are not clever, we just use Google and check earlier posts in this forum.

viewtopic.php?f=101&t=4579&start=10&hilit=EsHail

http://www.g4jnt.com/OctagonExtLo.pdf

http://www.hb9afo.ch/articles/pll-lnb/10ghz_pll-lnb.htm

https://uhf-satcom.com/blog/ku-band-pll-lnb-s

Mike G0MJW
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G8GKQ
Site Admin
Posts: 2810
Joined: Sun Mar 22, 2009 1:21 pm

Re: ** Help** Octagon LNB (25 Mhz) GPS Mod

Post by G8GKQ » Sat Nov 03, 2018 9:16 pm

Hi Glen

We do, but a considered reply takes time and research...

The dual output LNBs are currently available on eBay; search on this number: 192108842161

The article "Locking the Octagon PLL LNB to an external reference" on page 36 of CQ-TV 261 describes exactly what you are trying to achieve. As a BATC Member, you are able to download the complete magazine, including this article, from the BATC website once you have logged in.

Hope that helps

Dave, G8GKQ
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glen_turner2002
Posts: 36
Joined: Wed Mar 25, 2015 5:21 pm

Re: ** Help** Octagon LNB (25 Mhz) GPS Mod

Post by glen_turner2002 » Mon Nov 05, 2018 10:26 pm

Thanks for the info Dave and Mike. I did look mike but i musn't be as good as you when it comes looking through lots of info. It all tends to blur into one when i have to trawl through message boards. Perhaps it's dyslexia I don't know...

I will look at the links you sent, Thank you for your time.


Glen...
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M0HOJ
Posts: 17
Joined: Mon Mar 06, 2017 9:57 pm

Re: ** Help** Octagon LNB (25 Mhz) GPS Mod

Post by M0HOJ » Tue Nov 06, 2018 10:51 am

Hi Glen

Look at http://www.df9np.de/Contents/TVSat_LNB.pdf
This is probably the best mod currently available.
Search "octagon twin" on ebay to buy one.

73 FCosta, M0HOJ
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FRANCOIS F1CHF
Posts: 23
Joined: Sun Aug 21, 2011 8:07 am

Re: ** Help** Octagon LNB (25 Mhz) GPS Mod

Post by FRANCOIS F1CHF » Tue Nov 06, 2018 11:15 am

the good link for 27 Mhz PLL is :
http://microbandas.es/lib/exe/fetch.php ... ematic.pdf
instead of
http://microbandas.es/lib/exe/fetch.php ... 7mhz_schem

francois F1CHF
F1CHF near Paris France
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glen_turner2002
Posts: 36
Joined: Wed Mar 25, 2015 5:21 pm

Re: ** Help** Octagon LNB (25 Mhz) GPS Mod

Post by glen_turner2002 » Wed Nov 07, 2018 2:03 am

Thank you so much for the reply FRANCOIS F1CHF and F COSTA M0HOJ. I really appreciate you both taking the time to send me that information. With the help from everyone It's becoming clearer now what's required. Hopefully i should be able to get a dish up ready for receiving Es'hail Sat within the next few weeks.


73

Glen - G7MNP
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