[CRTech] Christian Radio Tech [MSG 83588]
[Thread Prev] [-- Thread Index --] [Thread Next] [Date Prev] [-- Date Index --] [Date Next]
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
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=newmail-kinshipradio-org.20150623.gappssmtp.com; s=20150623; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=krOzmc4PkGt4/GZedSd+Cj+TYqS80cata43cJqqxMrg=; b=p1UuakInh6n/fpdPcF1bZVJ/8VWrtf8qa3tMi2gWjuRd+6IGUNbM00DryDINdv9A5j i2LsiS+nNlC4C/GPh2nVJ2RoQJD5/lgV+FXBkPvgl+gkwlPcsbWQmYaJJwOtbYF3kV6x nzH1mrOx8rvSMsZm1K57jjec1FjeNzmfbmtBp2ZrvxwlWfz+5JtHg6lIhfQXevnV5A42 yzaLZM/SLFnlg6awYa96OW+3vgO0lz37KMAN5ACQhaO9YXwrdAbrEFvlbGTyQCDtiCFe VNnN8CiDFBl8U2bxWBLXFfNYlBjaoh3dajKka0WDcC5whWLOFP08eej+Wxqauc2EWIXt VsoQ==
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.

Mark
MN

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

Don:

 

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

406.491.4998

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

 

Don,

 

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:

Team,

 

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

www.kcasradio.com

 




--
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)
RE: New LNB
("Ron Huckeby" <huckebyrj@gmail.com>, 14 Aug 2018 21:04:43 -0000)
Prev by date: Re: TFT EAS930A FM module needed
(Barry Mishkind, 20 Aug 2018 21:13:07 -0000)
Next by date: Re: TFT EAS930A FM module needed
(Reginald Swedberg, 21 Aug 2018 13:32:31 -0000)
Prev by thread: Re: New LNB
(Kevin Kidd, 14 Aug 2018 22:58:01 -0000)
Next by thread: RE: New LNB
(Bill Hurne, 14 Aug 2018 21:07:26 -0000)
CRTech.org