Reply to thread

Message

<blockquote data-quote="tony smith" data-source="post: 1031761" data-attributes="member: 402577">Hi Channel HopperFirst yes Astra 1KR she is a Lockheed Martin 2100 running Ku band.Going back to Astra1L SISLive lease on about a 7 year lease the lower UK one, and some &amp;&nbsp; plus ad hoc lease on the upperfrequency one, they are all Vertical polarity, there is one more that can be strapped (beam focus mostly) for France or UKzones, this is all for ITV/ ITN News operations, SISLive have many other leases on other satellites for their other activities,mostly Ku band. Sky News etc.The another Ka transponder which is active around 183xx MHz again Vertical polarity was used for Playboy TV, still running.The only&nbsp; Horizontal transponder that could cause any opposite transponder cancellation, is the one that did have the Italianhorse racing on, but as it's not in UK zone, and very much higher in frequency, it's not a problem, very easy to skew out.Any side lobes are not a big problem if as most of us are running prime focus antennas, this comes more of a problem with dual optics antennas this is all to try and reduce the beam width, so your tx or receive 1st order are with in the 32 Log thetashape.The K band down link at the 19.2 east Astra orbit is very clear, as in it's 18/19 Ghz spectrum only Astra 1L is using it, nothing else.The only problem downlinking K band here, is if you have any local high power cellular telephone transmitters . that's one of the reasons why this spectrum slice at K band is so clear, all or most other Ka band&nbsp; uplink satellites have higher downlink frequencies.PS Satellite term's &quot; Bus&quot; is it's electrical power platform, the rx/tx is it's&quot; Payload&quot;</blockquote>

[QUOTE="tony smith, post: 1031761, member: 402577"] Hi Channel Hopper First yes Astra 1KR she is a Lockheed Martin 2100 running Ku band. Going back to Astra1L SISLive lease on about a 7 year lease the lower UK one, and some & plus ad hoc lease on the upper frequency one, they are all Vertical polarity, there is one more that can be strapped (beam focus mostly) for France or UK zones, this is all for ITV/ ITN News operations, SISLive have many other leases on other satellites for their other activities, mostly Ku band. Sky News etc. The another Ka transponder which is active around 183xx MHz again Vertical polarity was used for Playboy TV, still running. The only Horizontal transponder that could cause any opposite transponder cancellation, is the one that did have the Italian horse racing on, but as it's not in UK zone, and very much higher in frequency, it's not a problem, very easy to skew out. Any side lobes are not a big problem if as most of us are running prime focus antennas, this comes more of a problem with dual optics antennas this is all to try and reduce the beam width, so your tx or receive 1st order are with in the 32 Log theta shape. The K band down link at the 19.2 east Astra orbit is very clear, as in it's 18/19 Ghz spectrum only Astra 1L is using it, nothing else. The only problem downlinking K band here, is if you have any local high power cellular telephone transmitters . that's one of the reasons why this spectrum slice at K band is so clear, all or most other Ka band uplink satellites have higher downlink frequencies. PS Satellite term's " Bus" is it's electrical power platform, the rx/tx is it's" Payload" [/QUOTE]

Verification