Titanium Satellite Announces the Release of the 5G Blue Filter C-Band LNBF Models - C140 and C240

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You heard it first here on SatelliteGuys! The Titanium Satellite 5G Blue Filter C-Band LNBFs will be released on Monday, December 16th, 2024. First available on the Titanium Satellite and Ebay.com, then within a few weeks, on Amazon.com. The recommended retail prices are $90 for the C140 (Single - 1 Output) and $105 for the C240 (Dual -2 Outputs). Sorry, no preorders will be accepted before the release date.
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The BLUE Filter C140 and the C240 LNBF models pass-through the 4000 - 4200 MHz C-Band downlink transponder frequencies and the BPF (Band Pass Filter) attenuates interference from signals outside of this band pass frequency range, including 5G N78 and N77 low and high bands. This new generation of innovative Titanium Satellite interference filtering LNBFs have been in development along with our manufacturing partner over the past two years. Many product revisions were built and real-world tested with the help of satellite hobbyist friends worldwide, as we fine-tuned the design and produced these latest models of our high quality filtered LNBFs. The expanded front-end hairpin filter and tuned cavity isolation blocks provide significantly greater interference rejection than with legacy models. This design required a new body casting to facilitate the larger electronics cavity and shielding blocks. As with all Titanium Satellite products, we don't build or distribute products that we wouldn't use in our own satellite systems. In my opinion, these are the best filtered LNBFs that we have ever offered!

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In both LNBF models, LNBF power and polarity selection are voltage controlled with typical 13/18Vdc via the coax with a max current draw of 200mA. The two ports on the C240 model are isolated with independent voltage polarity selection.

Extensive bench testing has shown both the C140 and C240 models to provide excellent interference rejection in all but the most extreme interference situations. The gain and interference rejection of the single and dual output models are the same. There is no interference mitigation advantage in choosing one model over the other. We found that the interfering 5G N78, N77 high and low band signals, which were previously causing transponders between 4000 and 4200MHz to macroblock and lose signal lock, are now attenuated and these target services are within range of error correction and the services are reliably decoded.

Please note: The Titanium Satellite C140 and C240 models are designed to only receive transponder frequencies between 4000 and 4200 MHz (4.0 - 4.2GHz). Most transponders targeting North America have relocated to transponder frequencies within the 4000 - 4200 MHz portion of C-Band. International satellites and transponders not targeting the North American footprint often use frequencies outside of this range.

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Thank you to a great SatelliteGuy member N6BY, who has graciously provided real-world 5G testing and feedback throughout the development process. Your assistance is greatly appreciated!

A special thanks goes out to all SatelliteGuys. Thank you for 20 years of friendship and support!
Remember: Enter code "SATGUYS SAVE" at www.titaniumsatellite.com to save 15% on your order.
 

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Titanium Brian, IF a person needed one of these, how do you KNOW which one is best to choose for their area? Red or Blue?
Two factors determine the band pass range when selecting the correct LNBF type:
1. What is the transponder frequency range that you wish to receive?
2. Is 5G in use in your area and if so, what bands?

If you are targeting reception of transponders between 4000 and 4200 MHz, purchase the BLUE C140 or C240 model. These models were primarily developed for the North American footprint where the 5G N77 High Band has been authorized and implemented, but the BLUE filter LNBFs can be very effective and used worldwide when only 4000 to 4200 MHz transponder frequency reception is required. I have heard many reports of N77 High Band usage and interference from regions where 3800 - 3980 MHz has not been approved for terrestrial use, but obviously is in use and causing interference.

It gets more complicated if your target transponders are below 4000 MHz. You will need to know if the 5G N77 High band (3800 - 3980 MHz) is in use in your region and if it is causing interference with your current C-band system.

Interference testing is usually done using a non-filtered 3700 - 4200 MHz LNBF and a spectrum analyzer. 5G interference is easily observed as random groupings of narrow carrier signal spikes, which have varying amplitudes equal to or greater than the target satellite transponder signals. If these signal spikes fall below 3800 MHz (above IF 1350 MHz), either 5G N78 Or N77 Low Band type interference is present. Select the RED filter model to attenuate signals below the 3800 - 4200 MHz BPF (Band Pass Frequency) range.

If these spikes are are also present in the 3800 - 3980 MHz range, 5G N77 High Band is present. Select the BLUE filter
model to attenuate signals below the 4000 - 4200 MHz BPF (Band Pass Frequency) range.

If you wish to attempt receiving transponder frequencies within this same 3800 - 4200 MHz range, use a RED filter LNBF, but the interfering signal path between the terrestrial source and the dish will need to be physically blocked. This means that the dish might need to be relocated to a lower height, moved behind a structure or erect a RF fence to block the terrestrial signal, but allow an open path to the satellite(s).

The are other threads describing how to identify interference, so I won't cover the how-to's in this thread. Most satellite hobbyists already have devices to detect interference, Examples are: satellite meters with spectrum display, computer based satellite tuners, SDRs, spectrum analyzers (including the inexpensive "TinySA Ultra" available on Amazon and Ebay).

Hope that you find the information to be helpful in selecting the correct band pass filter and mitigating interference.
 
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Any chance we can get just an LNB, not a LNBF?? My system uses its own orthomode feedhorn. Need a cheaper version of something like these:

 
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Any chance we can get just an LNB, not a LNBF?? My system uses its own orthomode feedhorn. Need a cheaper version of something like these:

No plans to offer either a limited bandpass LNB or waveguide filter (or combo), as your feed would require both products to replicate the front end filtering and limited bandpass conversion / amplification filtering of the C140 and C240 LNBFs.

We developed the C140 and C240 LNBFs because no one else currently offers a BLUE filter 4000-4200 MHz BPF LNBF and the majority of satellite hobbyists use LNBFs. Frankly, C-band is too niche of a market to invest in R&D, and manufacture a product that is currently readily available and has limited distribution.

BTW... carefully observe the bandpass frequencies of the filter and LNBs. The model that you posted ( rejects below 3900 MHz and above 4300MHz) would not be very effective against the latest 5G - N77 High Band, which is active up to 3980 MHz. If you are going to be spending high dollars, go with separate waveguide filter / LNB with tighter specs and not this combo.

While the combination of a waveguide filter and limited bandpass LNB is expensive, they are effective. The two waveguide filters and two bandpass LNBs required by an orthomode feed (or single waveguide filter and limited BPF LNB requied by a skew servo feed) are only effective when both are used in combination. The waveguide filter limits the input frequency range prior to the LNB conversion and amplification. Orthomode and servo skew provide an optimized feed, but it comes at a price.
 
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