Log in
Register
Menu
Log in
Register
Home
What's new
Latest activity
Authors
Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Current visitors
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
KA Band section
Ka lnb ?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Trust" data-source="post: 1130183" data-attributes="member: 181524"><p>After a lot of tests I have to aggree , a second lnb at that OMT brings down the signal from 11.7 dB to 7.9 dB in my case .</p><p>The second port is closer to the waveguide , I made a adapter to attach the lnb at the same distance from the waveguide .</p><p>To my surprice , the lnb attached on that modded port is giving 0.3 dB more signal ( 11.9 - 12.0 dB ) fluctuating</p><p>Back to the original port , ( 11.4 - 11.7 dB )</p><p></p><p>[ATTACH=full]142651[/ATTACH]</p><p></p><p>All the tests are done at 19.2 º E , then I moved to 42º E with still the drilled-out polaraiser between lnb and feedhorn .</p><p>Very weak signal , so I removed the feedhorn cover and put a plastic plate in the horn .</p><p>Nothing calculated just a blind guess ,only the diameter was depending .</p><p>To fit tight 9.4 mm at the beginning till 11 mm at the end , 37 mm long 1.6 mm thick .</p><p>Receiving Turksat Promo with 13.9 - 14.0 dB .</p><p>After changing the drilled-out polaraiser for a original polaraiser and another feedhorn with cover also 13.9 but 14.0 dB was not possible to reach .</p><p>Maybe the cover is guilty for that loss .</p><p></p><p>[ATTACH=full]142652[/ATTACH]</p></blockquote><p></p>
[QUOTE="Trust, post: 1130183, member: 181524"] After a lot of tests I have to aggree , a second lnb at that OMT brings down the signal from 11.7 dB to 7.9 dB in my case . The second port is closer to the waveguide , I made a adapter to attach the lnb at the same distance from the waveguide . To my surprice , the lnb attached on that modded port is giving 0.3 dB more signal ( 11.9 - 12.0 dB ) fluctuating Back to the original port , ( 11.4 - 11.7 dB ) [ATTACH type="full"]142651[/ATTACH] All the tests are done at 19.2 º E , then I moved to 42º E with still the drilled-out polaraiser between lnb and feedhorn . Very weak signal , so I removed the feedhorn cover and put a plastic plate in the horn . Nothing calculated just a blind guess ,only the diameter was depending . To fit tight 9.4 mm at the beginning till 11 mm at the end , 37 mm long 1.6 mm thick . Receiving Turksat Promo with 13.9 - 14.0 dB . After changing the drilled-out polaraiser for a original polaraiser and another feedhorn with cover also 13.9 but 14.0 dB was not possible to reach . Maybe the cover is guilty for that loss . [ATTACH type="full"]142652[/ATTACH] [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
KA Band section
Ka lnb ?
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top