Newsnet on Ka Band A

[sat-tv-fan]

Not at this time- unless that particular ad is on a different page then the item is not available. Same applies with the Inverto Ka/Ku that they once sold. All gone . Look for the traffic light style stock level indicator in the ad, they are showing Red-ie: no stock.

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View attachment 117603

Nooooo not that one, this one ! Ka-Band DRO LNB Model MCL-KD01 W42 Flansh, Frequenzbereich 18,2 - 18,85 GHz von Ka-Band LNB Flansh W42 Serie DRO 21,2 - 22,2 Ghz Satshop24

 

[John]

Nooooo not that one, this one ! Ka-Band DRO LNB Model MCL-KD01 W42 Flansh, Frequenzbereich 18,2 - 18,85 GHz von Ka-Band LNB Flansh W42 Serie DRO 21,2 - 22,2 Ghz Satshop24

... That's the ad i was refering to when i said 'that particular ad' , note the stock level indicator. Also i could not find that particular ad on the current web site ads for today. I think i last saw that ad over a year or so ago

 

[sat-tv-fan]

... That's the ad i was refering to when i said 'that particular ad' , note the stock level indicator. Also i could not find that particular ad on the current web site ads for today. I think i last saw that ad over a year or so ago

Oh ok sorry I mis-understood you. Hoping it might still be available somewhere ? live in hope !

 

[sat-tv-fan]

So it's a Norsat LNB Norsat 9000BF-2 Ka Band DRO LNB | Viking Satcom

 

[John]

So it's a Norsat LNB Norsat 9000BF-2 Ka Band DRO LNB | Viking Satcom

For watching 18GHz Newsnet and other regional feeds you need the 9000AF model. Then you need a suitable dish & feed for it for either a PF or Offset antenna. Also - - the dreaded shipping & import duties etc to add if you are purchasing from the States.
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[sat-tv-fan]

For watching 18GHz Newsnet and other regional feeds you need the 9000AF model. Then you need a suitable dish & feed for it for either a PF or Offset antenna. Also - - the dreaded shipping & import duties etc to add if you are purchasing from the States.
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View attachment 117610

Yes so I can't use my 1m dish then ? What feed do you recommend ?

 

[John]

Yes so I can't use my 1m dish then ? What feed do you recommend ?

Not sure what your 1mtr dish actually is - PF or Offset ?. There is only one easily available Ka feed that i know of and that is the XMW FD9000L. It's supposed to be designed for PF reflectors but myself and others have used it on Offsets and gives decent performance. Myself and others have re-used commercial scalar feeds taken from internet broadband equipment and re-engineered the feed flange to fit the WR42 flange on the lnb. This is why i keep saying that the band D Inverto Ka/Ku lnbf is/was such good value as all the hard work has been done for you and once you venture off that unit to receive other Ka frequency bands such as Band A 18GHz Newsnet feeds etc, you enter a completely different and more difficult world.

 

[sat-tv-fan]

Seems to me all the same LNB, same no...DRO R9000, XMW FD9000L and the Norsat varient 9000AF-2 so the 179 euro price was a true bargain....

 

[s-band]

Seems to me all the same LNB, same no...DRO R9000, XMW FD9000L and the Norsat varient 9000AF-2 so the 179 euro price was a true bargain....

The Norsat, XMW and MMCLuster PLL LNBs all appear to be similar so there may be one OEM for many DROs as well. I started off with a Gilat band B which is about 3dB down by 18.5GHz and needs an IF tuner that goes down to 250MHz (TBS6983). That could not always lock the main ITN feed on 18557. Thanks to 2 members who gave me their water damaged XMW & MMCL PLLs, I created one good LNB out of the 2. There's a cautionary note - the XMW etc PLLs need a rain cover!

With the Frankenstein LNB on a 1.2m offset dish most feeds will lock most of the time. The levels vary quite a lot and some are down to 7dB SNR at times. Here's the electronics block for Ka A which has a servo for polarisation control. I think that the feed was made by Patriot. I'm not sure if it is perfectly matched to the 0.8f/d dish but it works fine.

 

[John]

The Norsat, XMW and MMCLuster PLL LNBs all appear to be similar so there may be one OEM for many DROs as well. I started off with a Gilat band B which is about 3dB down by 18.5GHz and needs an IF tuner that goes down to 250MHz (TBS6983). That could not always lock the main ITN feed on 18557. Thanks to 2 members who gave me their water damaged XMW & MMCL PLLs, I created one good LNB out of the 2. There's a cautionary note - the XMW etc PLLs need a rain cover!

With the Frankenstein LNB on a 1.2m offset dish most feeds will lock most of the time. The levels vary quite a lot and some are down to 7dB SNR at times. Here's the electronics block for Ka A which has a servo for polarisation control. I think that the feed was made by Patriot. I'm not sure if it is perfectly matched to the 0.8f/d dish but it works fine.

OT side note: Those newer servo motors we had not long ago seem to be a lot better than the others we had Graham. The older ones worked ok using the pololu pc polarity controller but could quite easily go into jitter mode when using the USA sourced polarity controller from Rick's. Iv'e gone back onto the Rick's one now using the new batch of servo as it's a lot easier to operate.

 

[moonbase]

OT side note: Those newer servo motors we had not long ago seem to be a lot better than the others we had Graham. The older ones worked ok using the pololu pc polarity controller but could quite easily go into jitter mode when using the USA sourced polarity controller from Rick's. Iv'e gone back onto the Rick's one now using the new batch of servo as it's a lot easier to operate.

John,

Would you please be able to provide a link to a supplier for the newer servo motors? I think mine is the older model and it always seems to have the stop/start jumping type rotation using the polarity controller we got as a group buy from Rick.

Thx

 

[John]

John,

Would you please be able to provide a link to a supplier for the newer servo motors? I think mine is the older model and it always seems to have the stop/start jumping type rotation using the polarity controller we got as a group buy from Rick.

Thx

Will do Dave, bare with me.
Chris (scopus) has had similar issues and put it down to some water ingress i think it was and is now using his with a rain cover and some of that black sealing gel that @RustySpoons alerted us to. I now coat the whole exterior of mine with at least two coats of sealing varnish.

 

[John]

Will do Dave, bare with me.
Chris (scopus) has had similar issues and put it down to some water ingress i think it was and is now using his with a rain cover and some of that black sealing gel that @RustySpoons alerted us to. I now coat the whole exterior of mine with at least two coats of sealing varnish.

... this should be it, Graham might also confirm
RDS3115 RDS3115MG Robot servo Arduino 270 Degree 15kg/cm RC slope pan tilt UK | eBay

 

[s-band]

... this should be it, Graham might also confirm
RDS3115 RDS3115MG Robot servo Arduino 270 Degree 15kg/cm RC slope pan tilt UK | eBay

Yes, that's the one and the same chap I got mine from. I found that the others would not re-set after the kit had been switched off and on. A pain if the dish is a long way form the controller. I use the Polulu controller as it allows multiple settings of range and speed. A big advantage of the upside-down dish is that I can put a bucket over the whole feed to keep the water off. (OK, so it's not elegant!)

 

[moonbase]

... this should be it, Graham might also confirm
RDS3115 RDS3115MG Robot servo Arduino 270 Degree 15kg/cm RC slope pan tilt UK | eBay

John & s-band,

Many thanks, I will get one ordered and check it out on a polariser barrel on a linear C band satellite if there are any in scope of my limited arc and small dish. I think 37.5W is linear for C band and I know 46E is. However, I have not got a view of 46E.

Update:
Seller is on holiday until 1st July !!

 

[Trust]

What I'm missing here is the US SL3K4 Ka lnb
The DirecTV SL3K4NR1-03
I still use it to receive Newsnet with my CM 1.8m .
before that CM it was attached to a 1.2 Fibo Gregorian , dont know how it performs on a 1 m dish .

 

[scopus]

Will do Dave, bare with me.
Chris (scopus) has had similar issues and put it down to some water ingress i think it was and is now using his with a rain cover and some of that black sealing gel that @RustySpoons alerted us to. I now coat the whole exterior of mine with at least two coats of sealing varnish.

Yes, quite correct John. All my juddering issues have now been fixed after the first servo motor failed due to water ingress. The replacement is now sealed with that liquid plastic sealent that the Spoon recommended.

 

[scopus]

What I'm missing here is the US SL3K4 Ka lnb
The DirecTV SL3K4NR1-03
I still use it to receive Newsnet with my CM 1.8m .
before that CM it was attached to a 1.2 Fibo Gregorian , dont know how it performs on a 1 m dish .

Yes, a 1 metre dish is a bit on the small side for the ITN stuff..

 

[sat-tv-fan]

So the DRO R900 satshop use to sell is not a PLL type ? Hence why it was so much cheaper or what ? Excuse my ignorance !

 

[scopus]

So the DRO R900 satshop use to sell is not a PLL type ? Hence why it was so much cheaper or what ? Excuse my ignorance !

Correct.