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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Tests of 120cm antennas
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<blockquote data-quote="RimaNTSS" data-source="post: 916095" data-attributes="member: 312276"><p>Fortunately Dishpointer shows exact elevation for satellites calculated for particular location and precision is up to 0,1*. PFA's face leaning shows exact elevation as stated on Dishpointer, and can be ,measured up to 0,1* as well, I've checked this long time ago and do not think something is dramatically changed over last couple of years. So, offset antenna should be leaning Elevation angle+offset angle (this is axiom of SAT technique). Antenna-designer (especially branded ones indicate offset angles with the precision up to 0,1*). Resuming- I do not think that 0,7* mistake is because of Dishpointer calculations or producer's wrongly stated antenna's offset angle. Mistake is definitely in wrong placement of LNB (not in antenna's focus but in multifeed position). We all know well that LNB placed in multifeed brings us worse results.</p><p>I did not make precise measurements of any of mine offset dishes, that is going to be done soon. </p><p>But, would be very interesting to hear other users thoughts about this issue and, maybe to see their measurement results as well. </p><p>CM 1,2m is quiet popular antenna, and we could share results on this particular dish. </p><p>I hope we will not have criticizers at the end of the process (whatever results will be). It is well known that some people like to do lots of critics without doing any practical things themselves (and, again, fortunately we do not have such a persons within this forum community <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite21" alt=":-ohcrap" title="Oh Crap :-ohcrap" loading="lazy" data-shortname=":-ohcrap" /> ).</p></blockquote><p></p>
[QUOTE="RimaNTSS, post: 916095, member: 312276"] Fortunately Dishpointer shows exact elevation for satellites calculated for particular location and precision is up to 0,1*. PFA's face leaning shows exact elevation as stated on Dishpointer, and can be ,measured up to 0,1* as well, I've checked this long time ago and do not think something is dramatically changed over last couple of years. So, offset antenna should be leaning Elevation angle+offset angle (this is axiom of SAT technique). Antenna-designer (especially branded ones indicate offset angles with the precision up to 0,1*). Resuming- I do not think that 0,7* mistake is because of Dishpointer calculations or producer's wrongly stated antenna's offset angle. Mistake is definitely in wrong placement of LNB (not in antenna's focus but in multifeed position). We all know well that LNB placed in multifeed brings us worse results. I did not make precise measurements of any of mine offset dishes, that is going to be done soon. But, would be very interesting to hear other users thoughts about this issue and, maybe to see their measurement results as well. CM 1,2m is quiet popular antenna, and we could share results on this particular dish. I hope we will not have criticizers at the end of the process (whatever results will be). It is well known that some people like to do lots of critics without doing any practical things themselves (and, again, fortunately we do not have such a persons within this forum community :-ohcrap ). [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Tests of 120cm antennas
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