Best Dielectric Bandpass Filter

Celestron 90° Dielectric Star Mirror Diagonal with Twist Lock 1.25

Enjoy better views through your telescope with this premium diagonal featuring diffraction-limited optics and dielectric coatings.
Provides a 90° viewing angle, perfect for more comfortable viewing through refractor and Cassegrain-type telescopes.
58 layers of dielectric coatings provide an over 99% reflective surface, ensuring the maximum amount of light collected by the telescope reaches the....
Twist-lock keeps the eyepiece centered in the diagonal to provide better optical alignment.
Accepts standard eyepieces, Barlow lenses, threaded filters, and other accessories with a 1.25” barrel.

35 Vinyl Color Coding Electrical Tape, 32 to 221 Degree F, 1250 mV Dielectric Strength, 20′ x 1/2″.
Dielectric Strength, 20′ Length x 1/2″ Width, Blue.
3M Scotch 35 Vinyl Color Coding Electrical Tape, 32 to 221 Degree F, 1250 mV.

12" Dual 2-Ohm Voice Coil IDMAX Series Subwoofer.
1000 Watts RMS /1800 Watts Max RMS Power Handling.
Mounting Depth 8.15" / Cutout Diameter 11.02".
85.20 dB Sensitivity / 27.77Hz Resonant Frequency.
Works well in a sealed enclosure with a volume as low as .65 cu ft., but can also be used in ported and single reflex bandpass enclosures. Full specifications provided with subwoofer, and manufacturer's assistance is available by phone to help with enclosure design.

Improves clarity with superior-grade, 99.99%-purity copper conductors.
Maintains signal integrity and 75-Ohm impedance using precision-formulated, polyethylene dielectric material.
Creates precise contact and increased durability with corrosion-resistant, 24k gold connectors.
Delivers maximum bandwidth with 75-Ohm coaxial construction.
Isolates noise with 100%-coverage aluminum/Mylar foil shield.
Video cables minimize interference and deliver brighter colors and sharper detail.
Separates brightness from color using 2 separate conductors to create clean, accurate signals.
Provides brighter, more natural colors and crisper picture quality than standard composite RCA.
Features precision-formulated polyethylene dielectric material.

Twin-tip technology with 11 mm platinum center electrode and 11 mm titanium enhanced ground electrode.
Improve fuel economy, better acceleration and faster starts than all other single platinum plugs.
Purified alumina powder insulator provides exceptional dielectric strength and thermal conductivity, allowing the material to stand up to extreme stress.

2" Diagonal Mirror with 99% reflection, optics are made with Pyrex glass..
Multi-layered dielectric coatings that produce 99-percent reflectivity for brighter, sharper images..
Comes with dielectric coatings for the most light transmission possible..
Suitable for refractors, Schmidt-Cassegrains, ACF, EdgeHD and Maksutov-Cassegrains..
2" - 1.25" reducing sleeve with brass compression ring, non-marring compression safety secures the eyepieces..

【Frequency Range 】Tiny Spectrum Analyzer with two inputs, high quality MF/HF/VHF input for 0.1MHZ-350MHz, lesser quality UHF input for 240MHz-960MHz. Switchable resolution bandpass filters for both ranges between 2.6kHz and 640kHz. Color display showing 290 scan points covering up to the full low or high frequency rangefrequency range. The tinySA contains all the components of a conventional heterodyne swept spectrum analyzer..
【Built-in Calibration Signal Generator】When not used as Spectrum Analyzer it can be used as Signal Generator, MF/HF/VHF sinus output between 0.1MHZ-350MHz, UHF square wave output between 240MHz-960MHz. Built-in calibration signal generator that is used for automatic self test and low input calibration..
【Tiny Spectrum analyzers & ESD Function】Switchable resolution bandpass filters for both ranges between 2.6kHz and 640kHz.Color display showing 290 scan points covering up to the full low or high frequency range. Bulit-in rechargeable battery allowing a minimum of at least 2 hours portable use.The performance of the 2021 latest version 3.1 will be more stable and sensitive, with a new ESD protrcted function enable the product to have a higher antistatic level and a longer service life..

Seal & Protects: The role of insulating silicone grease is to sealant from air, dust& water to protect from corrosion, oxidation, leakage, etc..
Safe: High dielectric strength, safe to use on electrical and electronic components..
Material Friendly: Good compatibility with various plastics and metals. It prevents the plastic from becoming brittle..
Environmentally Friendly: Our spark plug grease is non-toxic, tasteless & non-irritating, which will not cause harm to the environment..
Application: Our dielectric grease is ideal for spark plug connector, automotive electrical connections, headlight sockets, etc..

Ergonomic contoured shape to help reduce hand fatigue and chafing..
Finest dielectric natural rubber, superior dielectric properties, increased durability, flexibility and comfort..
Under 3000V as a basic security appliances and 3000V-8000V as auxiliary security appliances..
Suitable for electrician lineman work and high-voltage machine operations, etc..
Length 14 inch, Width 4 1/2 inch (Wrist)/ 6 3/4 inch (Cuff), fit for most hand size..