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Aviation radio altimeters operate between 4.2 and 4.4GHz. The C140 and C240 LNBFs are designed to filter below 4.2GHz and pass 4.0 to 4.2GHz. We left the top of the bandpass open as the majority of users do have a need for filtering above 4200MHz. Aviation radio altimeter interference only...

Satellite AV may still have a few NOS STAB HH120 laying around.

I have an AJAK 180 HH that has been in storage for past 10 years. Was originally mounted on a hydroformed AMCI dish that I purchased in Reno, Nevada. Yes, true horizon to horizon and capable of lifting an elephant! FREE to a good home.... Local Pick-up near Sacramento, CA. It is a beast and...

On a polar mount dish, no skew adjustment is needed between satellite positions. the mount tracks the arc.

The stability range referred to warm-up and operational drift, i.e. thermal. Over the years, two problems haunted the Invacom LNB(f)s: 1. The feed throat cover quickly failed due to UV. 2. LO drift, which would happen even if it was NOS stored unused in temp/humidity control. Several times I...

Surprised that you don't own an RTL-SDR. Best $35 you will ever spend... www.nooelec.com/store/sdr/sdr-receivers.html

There are two tuning slugs. Simple to tune with a non-metallic flat blade tool and a spectrum analyzer with signal generator. I forget which slugs are for high and low band, but recall that they are labeled. If you don't have a 12G signal generator, use a known frequency narrow carrier and a SA...

Spaun, Sevis, Pico Macom, Tradewinds have inline f-fitting 22KHz tone generators powered by typical 13-18Vdc LNB voltage. Alibaba has similar devices listed (who knows the landed price at this time). I stocked the Spaun units. Don't recall the insertion loss, but they provided acceptable SNR...

Quick thoughts on an apples to oranges test: Bias power source and 22KHz tone generation? Reflector aperture beam shaping, material, accuracy LNBF proper FD and FL setting for 1.1m reflector and LNBFs Scalar Dish (optimized) for reflector vs linear (universal) Signal sources on other side...

One of two things come to mind. 1. The LNBF's female F-fitting's center wire or solder connection has broken from the PCB inside the housing. Slightly rotating the f-connector makes the center conductor contact the PCB. Fix: Open the LNBF electronics cavity and check continuity and/or damage...

Two items to consider about this dish. As already mentioned, the reflector size is small and will not adequately attenuate adjacent satellite interference. The button hook feed mount appears to be bent (someone doing pull-ups? LOL). Buttonhook mounts are often easy to finetune FD and FL, but...

Looks like a reflector heater enclosure for snow and ice. Note that the enclosure is mounted on the back of the reflector. Warm air is exhausted into the enclosure to heat the dish and prevent build-up of ice and snow on the reflector's surface.

You may be able to differentiate between the two transponders by manually offsetting the saved transponder frequencies in your STB by 1, 2 or 3 MHz from the actual frequencies to provide reduced AFT (Automatic Fine Tuning) overlap, which is typically set by default at 2 or 3 MHz MHz range. A...

Might not even be 5G interference. What is the CNR on 4032V15201 on 117W when it is decoding reliably? As it is DVB-S 5/6, should decode reliably to approx. 6.5dB C/N. If your CNR doesn't have adequate headroom above 6.5 dB (minimum recommended C/N), other minimal factors may be affecting the...

Similar to Primestar, I use a torpedo level with 90 degree laser. Place on both the scalar and also across the feedhorn throat, taking laser dot confirmation readings at opposing angles.

What is the OSMio SNR (CNR) reading on 4180 TP when it decodes? What is the SNR (CNR) when it does not decode? Same questions for the V8 meter. One receiver may deal with marginal signal decoding better than another. My guess is that the SNR is marginal for the FEC and a fix might be as simple...

An auction is one of the early steps of the process. Remember that once licenses are awarded, implementation took another 4 plus years (and in many areas, yet to be launched). My prediction remains... 4 or 5 years.

Based on the last c-band auctions, likely be 4 or 5 years before any spectrum changes.

The FCC will likely put up 100 MHz (1/2 of the remaining C-band frequencies) for auction in a few years, negotiate an spectrum abandonment buyout and interference mitigation with current licensees. Based on the last auction, maybe 5 years before implementation? The sky isn't falling, the window...

Huh??? The distribution model evolves, but C-Band distribution will continue for many more years...

Always enjoy "The Broadcast Engineer's" take on technical subjects. View: https://youtu.be/Pe3WvHQMf38?si=mGVeCQneDTqZ8KTN

Thank you for clarifying. The CK1S C-band is Standard Type with Single LO of 5150 MHz and the KU-Band output is Standard Type with Single LO of 10750 MHz With a DiSEqC switch installed with C-Band on Port 1, KU installed on Port 2 and the Receiver Port connected to the STB, program the STB...

The Titanium Satellite CK1 C/KU LNBF never had a built-in band selection switch. If your LNBF has an internal switch, it is another brand. Best to identify what you have or we are playing a game of blindfolded "pin the tail on the donkey"... Here is the CK1S install PDF...

Please post a photo of the LNBF or the model. If it is an old CK1 model, yes, you need either a DiSEqC or 22 KHz switch for the STB to select between the C-band and the KU-band outputs. A CK1 does not have any interference filtering and will have problems with 5G interference on the C-band...

Both outputs are voltage controlled polarity. 13Vdc: Vertical or 18Vdc:Horizontal. They are not fixed polarity output. If only connecting one of the LNBF ports to one STB, protect the unused port with a bank plastic cap or a small dab of silicon sealant to prevent water intrusion. Some users...