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Satellite TV receivers & systems support forums
Multi-receiver/TV systems - Domestic only
Newbie polarity problem
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<blockquote data-quote="Analoguesat" data-source="post: 578164" data-attributes="member: 176362"><p>Satellite transmissions use one of 4 bands</p><p></p><p>horizontal low band </p><p>vertical low band </p><p>horizontal high band</p><p>vertical high band</p><p></p><p>the H/V switching is done with a 13/18V voltage change, and the hi/lo band switching is done with a 22khz tone which is on/off.</p><p></p><p>Therefore if one of the receivers switches to a channel which has the band where the 18V is on, and the tone is on, then whatever the other receiver does, it cant switch to any channel on any band apart from the same as the first receiver.</p><p></p><p>It all get VERY complicated VERY quickly.</p><p></p><p>With the quad lnb, the boxes have completely independent inputs.</p></blockquote><p></p>
[QUOTE="Analoguesat, post: 578164, member: 176362"] Satellite transmissions use one of 4 bands horizontal low band vertical low band horizontal high band vertical high band the H/V switching is done with a 13/18V voltage change, and the hi/lo band switching is done with a 22khz tone which is on/off. Therefore if one of the receivers switches to a channel which has the band where the 18V is on, and the tone is on, then whatever the other receiver does, it cant switch to any channel on any band apart from the same as the first receiver. It all get VERY complicated VERY quickly. With the quad lnb, the boxes have completely independent inputs. [/QUOTE]
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Satellite TV receivers & systems support forums
Multi-receiver/TV systems - Domestic only
Newbie polarity problem
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