C-Band Extended

[nelson_b]

Think i,m close to optimum now with this feed .. - ( the l,n,b, was a little too far forward in the holder and a touch more skew needed for both polarities ) Can lock the 9 transponders in the scans listed above in post 198 and 199 ...... with 3 other verticals around 2.0 db under lock ... 4686 - 4696 - and 4704.
I,v spent way too much time on this - l.o.l. ... Enjoyable time though.

 

[John]

Think i,m close to optimum now with this feed .. View attachment 132497 - ( the l,n,b, was a little too far forward in the holder and a touch more skew needed for both polarities ) Can lock the 9 transponders in the scans listed above in post 198 and 199 ...... with 3 other verticals around 2.0 db under lock ... 4686 - 4696 - and 4704.
I,v spent way too much time on this - l.o.l. ... Enjoyable time though.

... Ahhh, but - - tweek the scalar ring In or Out a mm at a time next Nelson lol -- once youv'e done that and still on 65°W, iv'e got an H signal for you to look at that's in the normal band segment

 

[nelson_b]

... Ahhh, but - - tweek the scalar ring In or Out a mm at a time next Nelson lol -- once youv'e done that and still on 65°W, iv'e got an H signal for you to look at that's in the normal band segment

Indeed ... Was trying to do too many things at once the other day when setting this thing up between showers ......

"iv'e got an H signal for you to look at that's in the normal band segment" ....... Interesting - will return to you about this.

Having a break from satellite things now .. and for this afternoon at least.

Cheers .

 

[John]

..... with 3 other verticals around 2.0 db under lock ... 4686 - 4696 - and 4704.

... Those three Nelson are all fluctuating between 6.1dB to 6.7dB max on the Promax but no lock
The rx can see and log them as well but also no lock

 

[nelson_b]

... Those three Nelson are all fluctuating between 6.1dB to 6.7dB max on the Promax but no lock
The rx can see and log them as well but also no lock

Yes .. much the same levels for me too on those - with F15 reciver

 

[nelson_b]

once youv'e done that and still on 65°W, iv'e got an H signal for you to look at that's in the normal band segment

What is this H signal that you speak of -John - ... youv,e got me curious.

 

[John]

What is this H signal that you speak of -John - ... youv,e got me curious.

.. But first - two of the three verticals that we were struggling with have just delivered but 4705 V is still playing hard to get
...................................................................................................................................................................................................................................................................................................

 

[John]

... here's my unknown one - 3915 V @ 65°-65.3° area - Beacon like signal that only shows up on the analyser
......................................................................................................................................................................................................................................................................................................

 

[nelson_b]

.. But first - two of the three verticals that we were struggling with have just delivered but 4705 V is still playing hard to get
...................................................................................................................................................................................................................................................................................................
View attachment 132514

No lock on those for me here ... worse than this morning 2.0 -3.0 db under ? .... the 2 verticals i have are showing a good signal 9.3 db on both

 

[nelson_b]

... here's my unknown one - 3915 V @ 65°-65.3° area - Beacon like signal that only shows up on the analyser
......................................................................................................................................................................................................................................................................................................
View attachment 132515

That, s certainly an odd one ..... i wont be able to visualize that signal with any of the kit i have here - i,m sure

 

[nelson_b]

.. But first - two of the three verticals that we were struggling with have just delivered but 4705 V is still playing hard to get
...................................................................................................................................................................................................................................................................................................
View attachment 132514

A surprise discovery when i looked at this - this morning around 9.00 am ... Without touching anything at the dish - the existing verticals i had had weakened considerably , and the two above t.p,s were now locking scanning and holding o.k. and even 4705 v locked and floated in and out of lock for a while .... Maybe its a time of day thing here for me ? .... they have weakened somewhat again now ... and yesterdays verticals have strengthened again.


C Band always has surprises

 

[Anonymous_1]

65W 4650 H 30000 3/4 Cinecolor sat promo

 

[John]

@65 West Extended.
Hmmmm, what have we here that's paid us a visit ?
This orbital position for extended Cband frequencies is getting busy.
....................................................................................................................................................................................................................................................................................................................................................................................................................................................

 

[Anonymous_1]

nothing from my QTH including spectrum anlyser scan



Yesterday, a frequency was active on 4712 H 4780 3/84, maybe a feed...

 

[John]

nothing from my QTH including spectrum anlyser scan

View attachment 134379

Yesterday, a frequency was active on 4712 H 4780 3/84, maybe a feed...
View attachment 134380

.. The three carrier spikes were short lasting and seemed to occupy the space that is now the one signal showing at 4720 H.

 

[el bandido]

It will be interesting to see if frequencies above 4500-4800 MHz are used more for satellite reception once 5G becomes fully operational. I think North America is supposed to clear 100 MHz (3700-3800) by the end of 2021, and then clear another 200 MHz (3800-4000) by the end of 2023.

Attached are what I can get at 65w now.

 

[Channel Hopper]

It will be interesting to see if frequencies above 4500-4800 MHz are used more for satellite reception once 5G becomes fully operational. I think North America is supposed to clear 100 MHz (3700-3800) by the end of 2021, and then clear another 200 MHz (3800-4000) by the end of 2023.

Attached are what I can get at 65w now.
View attachment 135315

Unlikely, a different aperture is required for efficient transfer of the higher frequencies, and so the feed, OMT and other parts will need to be manufactured in bulk.

 

[anto@]

with much surprise today i found this tp
in dual feed and with lnb for linear signals
at the moment for the circulars I have not installed a lnb for extended C

180 laminas

 

[John]

with much surprise today i found this tp
in dual feed and with lnb for linear signals
at the moment for the circulars I have not installed a lnb for extended C

180 laminas

No signal seen here as indicated from 13West on your analyser in Central UK with a dedicated 2.2mtr Extended Cband rig i'm afraid
But can see the signal from 40.5West Extended C-band for that channel

 

[anto@]

lnb solido quello a destra

Satellite 40 ovest

wrong meter info
the meter reads the broadcaster info