This video gives the basics of R-2R resistor networks and their use for digital to analog conversion (DAC). It discusses why these networks have a constant output impedance of R, and how the digital inputs contribute to the composite analog output in a binary scaled manner. The network is analyzed easily when broken down into segments using both Thevenin equivalent circuits and Superposition. Practical examples are shown with a homemade R-2R network, an Arduino Uno, a mixed signal oscilloscope and a fun XY application. A copy of the drawings in this video can be found here:
http://www.qsl.net/w/w2aew//youtube/Basics_of_R-2R_Ladder_DACs.pdf
Super Antenna MS135 SuperWire Stealth bulk 135 feet wire #18 stranded ham radio amateur PTFE
$40.01 (as of October 3, 2024 00:24 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)This is: The model MS135 SuperWire by Super Antenna. Designed for ham radio portable antennas, ground radials, Sdr, Shortwave, FM radio, AM radio, etc. Length: 135 feet (41 meters long) , Bulk roll hank of wire without spool. Excellent for crimping o... read more
CHA EMCOMM II
$160.00 (as of October 3, 2024 12:31 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)1 X CHA EMCOMM II V2 matching box 1 X 60' Copper Tinned KEVLAR Wire (-70°C to 150°C) 6M to 160M
End Fed Antenna, Portable No Tune End Fed Half Antenna Assembly, 4 Band 8 Band 1MHz to 30MHz 100W End Fed Radio Antenna for Outdoor
$30.61 (as of October 3, 2024 09:31 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)Easy To Install: This end feed antenna is 1: 64 balun, the interface is standard, easy to install, fast and convenient. Compact size, easy to carry. Premium Material: End fed antenna is made of premium ABS material, high hardness, not easy to damage,... read more
HF End Fed Antenna, 4 Band 8 Band 1MHz to 30MHz 100W Power End Fed Radio Antenna SSB FT8, FM, FSK for Outdoor
$31.99 (as of October 3, 2024 20:15 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)Wire Requirements: Need to prepare about 2.5 ㎡ of wire, 4 band 20m/65.6ft, 8 band 40.4m/132.5ft, and trim to the frequency suitable for use with talent. Easy To Install: This end feed antenna is 1: 64 balun, the interface is standard, easy to install... read more
KB2 Enterprises Original 3-54Mhz 1:1 Current balun 2000 watts PEP
$49.98 (as of October 3, 2024 00:25 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)The 1:1 Current Balun was designed to replace the center insulator of a dipole antenna.Outstanding low permeability ferrite mix coated toroid core with special design for maximum bandwidth by KB2 Product. Operates 3 to 54 MHz. The KB2 Current Balun w... read more
BAOFENG BF-F8HP (UV-5R 3rd Gen) 8-Watt Dual Band Two-Way Radio (136-174MHz VHF & 400-520MHz UHF) Includes Full Kit with Large Battery
$62.89 (as of October 3, 2024 05:03 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)Upgrades from our Previous Generation UV-5R: Twice the Output Power (8 watts up from 4 watts output), New Hardened Durable Radio Shell, 30% Larger Battery, V-85 High Gain Antenna (Twice the Antenna Performance), USA Support + In-depth User Guide Incl... read more
NOCO GENIUS5, 5A Smart Car Battery Charger, 6V and 12V Automotive Charger, Battery Maintainer, Trickle Charger, Float Charger and Desulfator for Motorcycle, ATV, Lithium and Deep Cycle Batteries
22% OffMeet the GENIUS5 - Similar to our G3500, just better. It's 34% smaller and delivers over 65% more power. It's the all-in-one universal charging solution - battery charger, battery maintainer, trickle charger, float charger, plus battery desulfator. D... read more
BAOFENG 5RM Ham Radio 10W Long Range Handheld NOAA Weather Receiver 2500mAh Battery Rechargeable Walkie Talkies with Programming Cable,Speaker Mic,Type-C Charging,2 Pack
$68.99 (as of October 3, 2024 06:12 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)Professional Ham Radio:Up to 999 storage channels and a 1.77 inch large color screen, making operation more convenient.The enlarged walkie talkie body size is designed ergonomically to enhance user feel.Support Chirp.FCC ID:2AJGM-5RM Multi-Band:This ... read more
Car Battery Charger Jump Starter with Air Compressor, 2500A Jumper Box for Car Battery Portable Booster Jump Pack, 12V Jumpstart Combo 150PSI Car Tire Inflator Air Pump(Up to 7.5L Gas/6.0L Diesel)
$79.99 (as of October 3, 2024 11:14 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)VERSATILE POWERFUL JUMP STARTER - The jump box for car battery is a compact essential tool that features car emergency start, tire inflation, tire pressure detection, power bank and lighting function. With the jump box, you can easily handle roadside... read more
pxton Two Way Radios Long Range Walkie Talkies for Adults with Headphones,16 Channel Handheld 2 Way Radio Rechargeable with Flashlight Li-ion Battery and Charger（6 Pack）
$69.99 (as of October 3, 2024 05:27 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)【Diversified functions】FCC ID: 2AX68PX-888S, 16 preset channels can be selected by rotating the knob on the 2 Way Radios to select any channel within the frequency range; you can program 50 CTCSS audio and 105 CDCSS audio on each programmed channel, ... read more
Emergency Weather Radio Solar Hand Crank Battery Operated Portable AM FM Shortwave Radio with NOAA Alert, Flashlight, Reading Lamp, Cellphone Charger,Earphone Jack, SOS Alarm for Home Outdoor Survival
$35.99 (as of October 3, 2024 05:44 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)【Weather Radio NOAA Alert Keeps You Well Prepared】Our weather alert radio is certified by National Weather Service. Choose WB band and one of the 7 preset weather band to tune into your local weather station. When the National Weather Service issues ... read more
Emergency Crank Weather Radio, 4000mAh Solar Hand Crank Portable AM/FM/NOAA, with 1W 3 Mode Flashlight & Motion Sensor Reading Lamp, Cell Phone Charger, SOS for Home and Emergency Green
$35.90 (as of October 3, 2024 05:42 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)★【 Newest Design MD-090P】Based on MD-090 emergency flashlight radio, we've optimized and upgraded a lot of features. A biggest 4000mAh rechargeable battery can charge more than one smartphone, the most powerful lighting functions include super-bright... read more
Pabulum Car Jump Starter with Air Compressor Combo 2500A Portable Jump Box, 12V Car Battery Booster with 150PSI Tire Inflator for 7.5L Gas/6.0L Diesel Engines Car Emergency Kits
$79.99 (as of October 3, 2024 11:35 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)【Compact Design with Powerful Performance】This multifunctional jumper starter is designed with a compact and portable body, yet it packs a punch with its 2500A peak current output. Ideal for jump-starting car batteries, it's perfect for both gasoline... read more