The Best Attenuator Frequency Range

The 1823A and 1856D are reciprocal 2.4 GHz and 3.5 GHz frequency counters that are microprocessor controlled. Their LED displays can provide up to nine digits of resolution using an external time base with a 10 s gate time. The high accuracy, sensitivity, and versatility of these counters make them an extremely valuable instrument to scientists, engineers, and communications technicians for a broad spectrum of laboratory and service applications.

Ultimate Ears MEGABOOM is a portable wireless speaker on steroids. Blast freakishly amazing 360-degree sound with deep, heart-pounding bass-everywhere you go.

Loaded with advanced scanning technology, the DS4308-XD has what it takes to capture 1D and 2D barcodes and direct marks printed on non-reflective surfaces. Want to reduce your cycle times, improve product quality and enable cost-effective compliance with the track-and-trace requirements in your industry. You can do it all with the Zebra DS4308-XD.
Not only does the DS4308-XD scan all the barcodes on your production line, it’s designed for the production line environment. You get a durable design that ensures reliable operation, despite the inevitable drops to the concrete floor. Flexible feedback modes ensure users know instantly when a scan is successful, even on the noisy production line — choose from haptic feedback (vibration) or the adjustable beeper volume and frequency tone. Unsurpassed aiming technology offers a crisp and bright aiming dot for first-time every time accurate aim.

Specifications:
Brand: Zebra
Model: DS4308-XD
Color: Twilight Black
Supported Host Interfaces: USB, RS232, Keyboard Wedge, TGCS(IBM)
User Indicators: Green LED on good decode; pager motor (for haptic feedback)
Operating Temp: 32F to 122F / 0C to 50C
Humidity: 5% to 95%, non-condensing
Drop Spec: Withstands multiple 6 ft./1.83 m drops to concrete
Sealing: IP42
Skew/Pitch/Roll: 60/65/360
Decode Capability: 1D (Code 39, Code 128, Code 93, UPC/EAN,GS1 DataBar) and 2D (PDF417, Micro PDF417, Composite Codes, TLC-39, Aztec, QR Code, Micro QR, Postal Codes)
Dimensions: 6.5 in. H x 3.9 in. W x 2.6 in. D 16.5 cm H x 9.8 cm W x 6.7 cm D
Weight: 5.71 oz./161.9 g

Package Includes:
One Barcode Scanner
One USB Cable
One manual

The MXL Cr89 is a large diaphragm condenser microphone wrapped in sharply contrasted black and chrome. The sound is every bit as bold as the body; the Cr89 can handle subtle acoustic guitar tones and loud vocals with the same sonic integrity. The Cr89 has low noise circuitry and a very low proximity effect, making it ideal for up-close recording. At home on instruments and vocals, the Cr89’s body design minimizes body resonance while the tuned grill cavity reduces standing waves and harmonic distortion Key Features: Top-quality condenser microphone for vocals and instruments Ideal for acoustic guitars, strings, pianos and room sound Warm in character yet still faithful to the original source Very low proximity effect-;great for up-close recording Supplied with heavy duty shock mount, and real wood storage box Features: Type: Condenser pressure gradient mic with large 32mm capsule Diaphragm: Gold-sputtered, 6 micron diaphragm Frequency Response: 20 Hz-;20kHz Polar pattern: Cardioid Sensitivity -30 dB re 1 V/Pat Impedance: 150 ohms Max output: 1K load: + 13 dB Max SPL for 0.5% THD: 138 dB SPL S/N Ratio: 80 dB (Ref. 1 Pa A-weighted) Equivalent Noise Level: 14 dB (A-weighted IEC 651) Dynamic Range: 124 dB Power Requirements: Phantom power 48V ± 4V Weight: 1.85lbs Size 64mm x 185mm Metal Finish: Black and Black chrome

72-505 – 

Specification
1.Power Requirement: 9V DC center negative
2.Current Consumption: 100mA
3.Dimensions: 132x64x45mm
4.Weight: 255g
5.Material: Aluminum alloy

Connections & Controls
IN Jack:
1/4” mono audio jack, for connecting instruments or other pedals.
9V DC Jack:
For power supply, use a 9-volt DC regulated by AC adapter, 500mA (plug polarity is positive on the barrel and negative in the center).
OUT Jack:
1/4” mono audio jack, for connecting to an amplififier.
LEVEL Slider: Controls the output level by ±15dB.
31.25, 62.5, 125, 250, 500, 1K, 2K, 4K, 8K, 16K

Features:
1. 100% brand new and high quality.
2. Standard SMA male to female connector.
3. Cast by high quality alloy, high in strength and toughness.
4. With high hardness, not easy to deform.
5. Stable performance, long lifespan.

Specification:
Attenuation: 1, 2, 3, 5, 6, 10, 15, 20, 30dB (Optional)
Accuracy: 1-10dB: ±0.5dB, 15-30dB: ±1dB
Power: 2W
Standing-Wave Ratio (SWR): ≤1.20
Impedance: 50Ω
Frequency Range: DC-6.0GHz
Temperature Characteristic: -55℃~125℃
Connector Type: SMA-JK Male to Female
Material: Copper plated ternary alloy material
Quantity: 3pcs
Total Length: 3.6cm/1.42in
Connector Diameter: 0.5cm/0.20in, 0.7cm/0.27in
Weight: Approx. 30g

Package list:
3 * Attenuator

Designed for whole house audio systems, OSD Audio’s VMS100 is a heavy-duty yet decorative impedance-matching volume control that is ideal for adjusting the volume of a pair of speakers independently in various rooms of your whole house audio system. Rated at 100 Watts peak with minimal bass roll-off, the VSM100 includes adjustable jumpers to add up to eight pairs of 8-ohm speakers simultaneously depending on what type of load your amp can handle, and the impedance-matching feature helps stabilize the ohm load going back to the amp or receiver to avoid overheating. A complete volume control kit that fits into a standard single-gang box, this kit includes the volume control, junction box, screws and assorted color trim plates (white, ivory and almond) so you can choose the color that best matches the room. Compatible with almost any dedicated audio zone or whole house system, the VSM100 provides a ruler-flat frequency response while the 12-step slider offers noise-free volume control and a wide range of listening volumes.

Specifications

• Power handling: 100W per channel
• Frequency Response 20Hz – 20kHz
• Front-mounted switch allows for easy adjustment when multiple pairs of speakers are connected to a single receiver or
• amplifier
• Impedance matching for 2, 4 or 8 pairs of speakers and can be used as non-impedance matching if leaving default on
• jumper setting at 1X.
• Steps: 12 (make before break)
• Total Attenuation: 42 dB (Max)
• Includes White, Ivory and Almond Plates, Inserts and Knobs
• Fits in a standard gang box
• Measures 4.125cm W x 6.35cm H x 6.35cm D
• 5-yr warranty

NanoVNA bundle is an open-hardware vector network analyzer designed by ttrftech (https://github.com/ttrftech/NanoVNA) which will allow you to test most of your RF equipment with ease. A portion of the proceeds from this bundle is paid to the ttrftech team to further NanoVNA development. The RF sections are EMI shielded to reduce potential interference and improve instrument accuracy.

NanoVNA includes a 2.8″ TFT touch screen, with a simple interface that allows for measuring S-parameters (S11 and S21). SWR, phase and smith chart capability.

At just 85mm x 54mm, with PCB case protection & a 400mA battery, NanoVNA is ideal for portable measurements and operation.

Measurement capability of at least 50kHz-900MHz, and beyond this range with appropriate custom firmware (note that specifications may be lower outside of the intended frequencies of operation). Frequency accuracy is 0.5PPM or better, RF output power is -13dBm and SWR <1.1.>

NanoVNA can also communicate with your PC via USB-C (serial mode). USB cable is included.

Included:

• NanoVNA with EMI shielding & 400mA battery
• 6pc SMA attenuators (1dB, 2dB, 3dB, 6dB, 10dB, 20dB)
• 3pc SMA calibration kit
• 2pc SMA quick connect adapters (plug-style SMA adapters)
• Female SMA to female SMA adapter
• 2pc RG174 cable, 30cm
• 2pc LMR200 cable, 60cm
• USB-C data cable, 30cm
• Plastic case