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Re: New LNB
To: CRTech <crtech@crtech.org>
Subject: Re: New LNB
From: Mark Croom <markc@newmail.kinshipradio.org>
Date: Mon, 20 Aug 2018 16:16:49 -0500
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In-reply-to: <017601d43412$685b0c00$39112400$@gmail.com>
References: <026201d4340e$65400d30$2fc02790$@cox.net> <10002256-162F-46B8-973A-0FEA38AE737E@gmail.com> <CAB42DVpM3UCTnX=Jsk=AUQGPTeoCGL5SFYJjJw0EGndMcop7Dw@mail.gmail.com> <017601d43412$685b0c00$39112400$@gmail.com>
Both of the dish geometry suggestions are well worth checking.

I had a DH Products 3.8 meter dish that was underperforming. It had some damage on installation and I had eyeballed it up as best I could, adjusting the braces to make it as flat as I thought I could, but we were still getting poor single-digit EbNo figures where I should have had double-digits on everything.

I adjusted the focal point on the feedhorn and got some improvement, and the used the string test to bring it in a little more accurately than my eyeballed job from last year, and that improved things a lot, between the two bits of the process.

Well worth the effort I think.


On Tue, Aug 14, 2018 at 4:04 PM, Ron Huckeby <huckebyrj@gmail.com> wrote:



You might also want to check the “clamshell” of the dish. Three builder’s strings across the dish 120 degrees apart to check for symmetry. The strings should all be within ¼” of each other at the center. Just mentioning polarity of LNB to throw out an idea.


Hope you find the problem.


Ron Huckeby, CBRE

Broadcast Engineer

Butte, Montana


200 pixelSBECertifiedLogo2015


From: Tom Van Gorkom [mailto:tomvangorkom@gmail.com]
Sent: Tuesday, August 14, 2018 2:45 PM
To: CRTech <crtech@crtech.org>
Subject: Re: [CRTech] New LNB




Would it be worth considering internet instead? That's what we do and it has been flawless - all automated.


Tom Van Gorkom
Radio Esperanza Engineering, KRIO AM/FM, KOIR FM

Office: 956-380-8150  
Cell: 865-803-7427

Rio Grande Bible Institute
4300 S US Hwy 281
Edinburg, TX 78539



On Tue, Aug 14, 2018 at 3:42 PM Jr <jreelectronics@gmail.com> wrote:

Check the distance between feed horn and center of dish. 


J. R. Richardson

Sent from my iPhone

On Aug 14, 2018, at 4:35 PM, Don Prentice <dprp1@cox.net> wrote:



We replaced our satellite dish from 10ft to 12ft (STI-12 3.8 meter mesh Satellite Prime) to be 2 degree compliant.  Unfortunately our signal has decreased rather increase as we expected.


We purchased a PRIE C-Band feed horn and Norsat PLL LNB C3220F but we could not get a signal to use.  We installed the old LNB and have a signal but not as strong as originally with the 10 mesh dish.


We are not sure if the LNB is bad or not compatible with the AMR and XDS-PRO4R.


What LNB has your radio stations chosen to use?  Is the LNB C3220F a good choice?


Thanks for any input you can give us,

Don Prentice



Mark W. Croom
Riverfront Communications, LLC
Yankton, SD
References: New LNB
("Don Prentice" <dprp1@cox.net>, 14 Aug 2018 20:36:04 -0000)
Re: New LNB
(Jr <jreelectronics@gmail.com>, 14 Aug 2018 20:42:44 -0000)
Re: New LNB
(Tom Van Gorkom <tomvangorkom@gmail.com>, 14 Aug 2018 20:45:16 -0000)
("Ron Huckeby" <huckebyrj@gmail.com>, 14 Aug 2018 21:04:43 -0000)
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