Best Collimator Variable Optical Attenuator

HoTech 2' & 1.25' SCA Laser Collimator for Newtonian Telescope - Crosshair Model # SCA-2C

• Retain only one optimal gear position brightness.
• Standard hex wrench to self-calibrate coaxial problem.
• The spot shape is a dot not a grainy elliptical point.
• The module adopts high-end spherical module, high sensitivity and easy adjustment.
• Adopts 3-piece glued optical glass lens for stable spotting better focusing effect and less halo.
• Make the spot shape is a dot instead of a grainy elliptical point.
• External effects of the product during transportation and use may cause off-axis problems.
• You can calibrate the coaxial problem yourself by giving away the standard hexagonal wrench.
• CNC precision lathe machining of the laser unit has a front opening from which the laser beam can be emitted.
• Resistance to sudden changes in temperature difference.
• The sudden temperature difference does not change the spot size.
• It is resistant to extreme cold weather and can be used under extremely cold weather of minus -30 degrees Celsius without affecting the use effect.

Vega Barebones - Ultra Low-Noise Variable Gain Amplifier VGA Module for RF & Software Defined Radio SDR Highly Linear & Wideband 30MHz-4000MHz Frequency Capability w/Bias Tee & USB Power Options

• A wideband (30MHz-4000MHz), high-performance, general purpose LNA module with a built-in variable attenuator to maximize usability and portability.
• The attenuation can be controlled either with the on-board potentiometer (analog control) or push button array (digital control).
• Dual amplifier design with adjustable gain (20dB-50dB at 100MHz), low noise figure and low power consumption. Can be powered through bias tee....
• Made in North America. Full 1 year warranty!.

MST VC Low Pass Filter Eurorack Module

JONGSUN 82mm Variable ND Filter, S-Pro MRC 16 Layers Nano Coatings, More Than 10 Stop ND2-ND1000 Stepless Adjustment Graduated, Lens Cloth Kit, Camera Neutral Density Filter

• 82mm Variable ND Filter Features Optical Glass Made in Japan, 16 Layers MRC and Nano Coatings..
• 82mm Variable ND Filter Uses 2 Pics 16 Layer MRC CPL Filter of Different Diameters(79mm and 92mm, A Total of 4 Optical Glasses), So That Vignetting Does Not Appear in the Picture..
• 82mm Variable ND Filter Unique Framework Design,Use Interval Adjustment Locking to Avoid Cross-over..
• 82mm Variable ND Filter More than 10-Stop ND2-ND1000 Stepless Adjustment Makes Photography More Convenient and Faster..
• We Laser Engrave Lettering Into Each MRC 82mm ND Filter Traction Frame to Ensure That The Lettering Won’t Ever Fade or Come Off After Aonsistent Use..

MDS-200A Amp 1600V Three-Phase Diode Module Bridge Rectifier Power Module Provide for Single Phase Rectification

• Measuring power range -75 ~ +16 dBm (external RF attenuator can be extended to 100dBm).

Boealzhl 2W SMA DC-6GHz Coaxial Fixed Attenuators Frequency 6GHz SMA Fixed Connectors (6DB)

• Useful in a wide variety of applications including impedance matching and level control..
• With diffrent attenuation values of fixed attenuator to be chosen from. High quality, rugged construction..
• Suitable for microwave equipment, electronic equipment or communication systems. The use of features frequency bandwidth, low standing wave, power, stable performance..
• Coaxial Fixed Attenuator ONLY,other accessories demo in the picture is not included..

Boealzhl 2W SMA DC-6GHz Coaxial Fixed Attenuators Frequency 6GHz SMA Fixed Connectors (10DB)

• Useful in a wide variety of applications including impedance matching and level control..
• With diffrent attenuation values of fixed attenuator to be chosen from. High quality, rugged construction..
• Suitable for microwave equipment, electronic equipment or communication systems. The use of features frequency bandwidth, low standing wave, power, stable performance..
• Coaxial Fixed Attenuator ONLY,other accessories demo in the picture is not included..

Boealzhl 2W SMA DC-6GHz Coaxial Fixed Attenuators Frequency 6GHz SMA Fixed Connectors (40DB)

• Useful in a wide variety of applications including impedance matching and level control..
• With diffrent attenuation values of fixed attenuator to be chosen from. High quality, rugged construction..
• Suitable for microwave equipment, electronic equipment or communication systems. The use of features frequency bandwidth, low standing wave, power, stable performance..
• Coaxial Fixed Attenuator ONLY,other accessories demo in the picture is not included..

Boealzhl 2W SMA DC-6GHz Coaxial Fixed Attenuators Frequency 6GHz SMA Fixed Connectors (20DB)

• Useful in a wide variety of applications including impedance matching and level control..
• With diffrent attenuation values of fixed attenuator to be chosen from. High quality, rugged construction..
• Suitable for microwave equipment, electronic equipment or communication systems. The use of features frequency bandwidth, low standing wave, power, stable performance..
• Coaxial Fixed Attenuator ONLY,other accessories demo in the picture is not included..