2.4 DH Antenna installation

[satmania]

@blademedia
Thanks for all the smart ideas what about coat, gloss levels, matt or classic paint...? need this information because i will paint my dish 230cm.

thx

 

[blademedia]

@blademedia
Thanks for all the smart ideas what about coat, gloss levels, matt or classic paint...? need this information because i will paint my dish 230cm.

thx

Thanks, I just used mat car spray paint @John just painted his new Elite dish it looks lovely, information here, I'm sure John will give you further advice if needed

Just Sharing This - 2.2mtr Elite / Precision resurection.

 

[blademedia]

The steel collar is now finished

A quick on/off install of the collar, I need to lengthen the arms by approximately 20/30mm, I cant get the F/D starting position, I only need to wind the threads out on the rear of the dish, I left plenty on them for this reason,

Ku band is about spot on here,


The C band needs to go further back approximately 15/20mm


Pleased with the above holder, everything is solid as it should be


As you can see plenty of adjustment, just need to be carful not to damage the wife's rhubarb

 

[Captain Jack]

just need to be carful not to damage the wife's rhubarb

Pfft... I'd be telling her not to damage your dish!

 

[blademedia]

Please post an image of what is right at the front end of the feed, if it has a little array of it's own in shiny chrome plastic then it's the same as mine.

Feedhorn turned up this morning, no shiny chrome plastic on this one.

 

[Channel Hopper]

Is that a 6870 ?

 

[blademedia]

Is that a 6870 ?

No mention of that number anywhere, Patent number 4414516

 

[Channel Hopper]

No mention of that number anywhere, Patent number 4414516

It should be in the manual, last page.

 

[blademedia]

It should be in the manual, last page.

No such numbers in the manual, everything you need to know about it here.
Patent US4414516 - Polarized signal receiver system
http://www.patentbuddy.com/Patent/4414516

 

[moonbase]

Feedhorn turned up this morning, no shiny chrome plastic on this one.
View attachment 105640 View attachment 105641 View attachment 105642 View attachment 105643 View attachment 105644 View attachment 105645

@blademedia

Nice feed.

What WR229 flange LNB's are you going to put on it, John seems very impressed with the Norsat 8000RI.?

Just a quick comment, "s-band" tested a few of my Norsat WR229 flange LNB's last weekend and a couple of his own. From the tests carried out, the Norsat DR0 8115 LNB performed best. The more expensive Norsat PLL models (3220 and 3120) did not perform as well as the cheaper Norsat DRO 8115 LNB. However, these were lab bench tests and not tests with the LNB's fixed to a dish.

Rgds

 

[blademedia]

@blademedia

Nice feed.

What WR229 flange LNB's are you going to put on it, John seems very impressed with the Norsat 8000RI.?

Just a quick comment, "s-band" tested a few of my Norsat WR229 flange LNB's last weekend and a couple of his own. From the tests carried out, the Norsat DR0 8115 LNB performed best. The more expensive Norsat PLL models (3220 and 3120) did not perform as well as the cheaper Norsat DRO 8115 LNB. However, these were lab bench tests and not tests with the LNB's fixed to a dish.

Rgds

Hi moonbase,

Ive not made my mind up yet but it will be a PLL, what I am wanting to do is devise a way to insert/remove the plate from my arm chair, I have a few ideas in mind to do this will see what I can come up with.

 

[s-band]

I just tried the Zinwell + AV-comm against a Co-Rotor 2 with Norsat & Patriot PLL and a 1990 Chaparral 17k DRO on the tin dish. I did all the tests on 40.5W and EBSPro scans gave between 72 and 75 TPs. Some low SR TPs were missed on the Zinwell but could be manually tuned in a few cases. Without going through a heap of data, there isn't much to chose between the Zinwell + AVC and the Co-rotor + Chaparral or Patriot 3515. The CoRotor + Norsat 3220 had a slight edge.

The interesting thing noted was that small tweaks were needed in the skew to optimise signal when changing frequency. That makes sense if it's caused by the polariser frequency slope or nulling of the unwanted polarisation. It makes the EBSPro scans, using the CoRotor, look worse than they would be if the system had per-channel skew stored. BM, your new feed will do linear and circular without removing the plate (as does my CoRotor). I'm not sure how much you lose in linear mode though. It would be interesting to try a Chaparral type polariser with the AVComm barrel. L?

 

[blademedia]

BM, your new feed will do linear and circular without removing the plate (as does my CoRotor)

Thanks G, it doesn't come with a plate.

 

[s-band]

Thanks G, it doesn't come with a plate.
[

Try one from a Tit?

 

[blademedia]

Try one from a Tit?

I have proper materials to make one, i need to devise a way to insert/remove it when necessary as mentioned, can gain up to 3DB without plate when its not needed.

 

[blademedia]

Is that a 6870 ?

I see it came with a elbow so its a 4221

 

[blademedia]

Nothing in the instructions for these electrical connectors x3, presume there for the servo connection ?

 

[John]

I just tried the Zinwell + AV-comm against a Co-Rotor 2 with Norsat & Patriot PLL and a 1990 Chaparral 17k DRO on the tin dish. I did all the tests on 40.5W and EBSPro scans gave between 72 and 75 TPs. Some low SR TPs were missed on the Zinwell but could be manually tuned in a few cases. Without going through a heap of data, there isn't much to chose between the Zinwell + AVC and the Co-rotor + Chaparral or Patriot 3515. The CoRotor + Norsat 3220 had a slight edge.

The interesting thing noted was that small tweaks were needed in the skew to optimise signal when changing frequency. That makes sense if it's caused by the polariser frequency slope or nulling of the unwanted polarisation. It makes the EBSPro scans, using the CoRotor, look worse than they would be if the system had per-channel skew stored. BM, your new feed will do linear and circular without removing the plate (as does my CoRotor). I'm not sure how much you lose in linear mode though. It would be interesting to try a Chaparral type polariser with the AVComm barrel. L?

View attachment 105657

That transponder count of yours G for 40.5 west, is 72-75 a combined figure for both polarities ?, my scan from a few days ago was 84, 44 on LHC & 40 on RHC. Scan was done at midnight when everybody across the pond was awake for the day.

 

[s-band]

Nothing in the instructions for these electrical connectors x3, presume there for the servo connection ?

Yes

That transponder count of yours G for 40.5 west, is 72-75 a combined figure for both polarities ?, my scan from a few days ago was 84, 44 on LHC & 40 on RHC. Scan was done at midnight when everybody across the pond was awake for the day.

Both. Scanned at 2MHz steps. There were another 3 or 4 that could be manually tuned at reasonable SNR. Done at 15:00-18:00

 

[blademedia]

Yes

Thanks G, what connection is needed to connect to them.