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
single feedhorn for 1.80m Channel Master Prime Focus
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="jacqfranc" data-source="post: 34109" data-attributes="member: 177534"><p><span style="color: black">Hi Everybody,</span></p><p></p><p></p><p></p><p><span style="color: black">Here goes a somewhat "difficult one":</span></p><p></p><p></p><p></p><p><span style="color: black">I need a single polarity feed (part number 6777) for a 1.80 m prime focus / 4 petals Channel Master.</span></p><p></p><p></p><p></p><p><span style="color: black">Bought in 1993, it is not made anymore and no spare parts seem to be available, according to Channel Master themselves (not very friendly at </span><span style="color: black">Pforzheim</span><span style="color: black">...).</span></p><p></p><p></p><p></p><p><span style="color: black">Actual configuration: 0.6 wideband WR75 Gardiner LNB and mechanical polarizer with Echostar 7000 (model 3000 until 2001); very performing: in 1999 it was able to receive most Astra digital signals in Istanbul whereas most people needed 3 meter dishes and in Budapest, where I am for the moment, I almost get the V signals on Astra 2D (blocks, no more).</span></p><p></p><p></p><p></p><p><span style="color: black">I would like to experiment with other LNBs but therefore, need that single one: </span></p><p></p><p></p><p></p><p><span style="color: black">1) there was an article in the 12-01/04 issue of Telesatellite International on the REISAT servo polarizer (very expensive: € 1000 !) <strong><span style="font-family: 'Verdana'">which rotates</span></strong> <strong><span style="font-family: 'Verdana'">with a side - mounted servomotor</span></strong></span></p><p></p><p></p><p></p><p><span style="color: black">2) the same article tells us that, for extreme reception, mechanical or magnetic polarizers, "have disadvantages: in the wave - guide, or just behind it, antenna wires, coils and ferrite magnets can be found: longer signal paths and mismatching which are deadly for digital signals, are the result and there is the additional chore of aligning the small dipole in the wave - guide with the actual polarization plane from the satellite, since there is no fine skew adjustment available": </span></p><p></p><p></p><p></p><p><span style="color: black">so, a test with a good C 120 LNB could be made (by the way: SMW offers a "quarterwave transformer", enabling the use of WR 75 with C 120) </span></p><p></p><p></p><p></p><p><span style="color: black">Does anybody know where to find this feed or, who could make one ?</span></p><p></p><p></p><p></p><p><span style="color: black">Moreover, does anybody have experience with the Astrotel 0.5 dB wideband WR 75 LNB ?</span></p><p></p><p></p><p></p><p><span style="color: black">Thanks.</span></p></blockquote><p></p>
[QUOTE="jacqfranc, post: 34109, member: 177534"] [color=black]Hi Everybody,[/color] [color=black]Here goes a somewhat "difficult one":[/color] [color=black]I need a single polarity feed (part number 6777) for a 1.80 m prime focus / 4 petals Channel Master.[/color] [color=black]Bought in 1993, it is not made anymore and no spare parts seem to be available, according to Channel Master themselves (not very friendly at [/color][color=black]Pforzheim[/color][color=black]...).[/color] [color=black]Actual configuration: 0.6 wideband WR75 Gardiner LNB and mechanical polarizer with Echostar 7000 (model 3000 until 2001); very performing: in 1999 it was able to receive most Astra digital signals in Istanbul whereas most people needed 3 meter dishes and in Budapest, where I am for the moment, I almost get the V signals on Astra 2D (blocks, no more).[/color] [color=black]I would like to experiment with other LNBs but therefore, need that single one: [/color] [color=black]1) there was an article in the 12-01/04 issue of Telesatellite International on the REISAT servo polarizer (very expensive: € 1000 !) [b][font=Verdana]which rotates[/font][/b] [b][font=Verdana]with a side - mounted servomotor[/font][/b][/color] [color=black]2) the same article tells us that, for extreme reception, mechanical or magnetic polarizers, "have disadvantages: in the wave - guide, or just behind it, antenna wires, coils and ferrite magnets can be found: longer signal paths and mismatching which are deadly for digital signals, are the result and there is the additional chore of aligning the small dipole in the wave - guide with the actual polarization plane from the satellite, since there is no fine skew adjustment available": [/color] [color=black]so, a test with a good C 120 LNB could be made (by the way: SMW offers a "quarterwave transformer", enabling the use of WR 75 with C 120) [/color] [color=black]Does anybody know where to find this feed or, who could make one ?[/color] [color=black]Moreover, does anybody have experience with the Astrotel 0.5 dB wideband WR 75 LNB ?[/color] [color=black]Thanks.[/color] [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
single feedhorn for 1.80m Channel Master Prime Focus
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