Jim, W6LG looks at http://www.sherweng.com/table.html website with extensive detail about receiver performance. Read more

Airspy HF+ and SpyServer streaming FFT and Audio data to an Android watch. @mm6dos Took the concept a step further! #sdrsharpinside pic.twitter.com/bWGhoXJOoc — prog’ (@lambdaprog) September 10, 2017 Airspy HF+ The Software Defined Radio revolution brought great flexibility in VHF and UHF reception. Today we offer the best wide band receivers which address these needs. We also […] Read more

Discusses the difference between Yagi antennas, log periodic antennas, and phased array antennas.   Read more

Operating mode: A1A(CW)，A3E(AM)，J3E(USB/LSB)，F3E(FM) minimum frequency stepping: 1Hz Antenna impedance: 50Ω Operating temperature range: -10℃ ~ +60℃ Frequency stability: after turn on the radio 1-60 minutes is + 4ppm, @25℃：1ppm/hour supply voltage: normal: 13.8VDC + 15%, negative grounding Operating voltage: 9.0-15.0VDC, negative grounding Current consumption: receive: 500mA@ Max transmit: 2.5A@ Max Dimensions: 160*100*46mm[does not include protr... Read more

Dual Band & Dual Time Slot: VHF 136-174MHz, UHF 400-470 MHZ; GD-77 has both Tier I & II and is compatible with Motorola and other DMR radios. High Capacity Battery: Up to 18 hours working time as well as 48 hours standby time, which is 30% longer than MD-380. USB Port Charger: We replaced traditional charger to USB […] Read more

RS-918SSB Main Features Spectrum Dynamic Waterfall Display Multiple Working Modes: Receive,Transmit,Tune,VFO,SPLIT DSP Digital Signal Processing Noise Reduction Automatic Notch Filter Humanized Interface Color Display Receive Fine Tuning Function, Changeable MIC Gain Value VCC Power Supply Voltage Indication Table Transmit Signal Strength Display Table Multifunctional Instrument: SWR Meter, AVD Audio Frequency Meter, ALC Signal Modulation Meter [... Read more

FDM-DUO is a SDR tranceiver that offers the possibility to operate STand-alone like traditional radio or attached to a Personal Computer discovering the possibilites offered by the SDR technologies. Stand-alone Specifications updated 6 June 2014 RX: Freqency range: 10KHz – 54MHz Direct sampling receiver operating @ 122.88MHz ADC: LTC2165 16bit DDC (Digital Down Converter) FPGA […] Read more

X-SERIES BTECH MOBILES The X-Series Mobiles introduce our new fully customizable Multi-Color LCD display screen. You can adjust the complete display to be exactly as you want it (with 9 available colors across 10 display elements). Beyond the display, you can fully customize your channels to display their alpha-numeric names or frequency settings.    The […] Read more

S-Units” is the topic of the current (August 17) latest episode of the “ARRL The Doctor is In” podcast. Listen…and learn! Sponsored by DX Engineering, “ARRL The Doctor is In” is an informative discussion of all things technical. Listen on your computer, tablet, or smartphone — whenever and wherever you like! Every 2 weeks, your host, QST Editor-in-Chief […] Read more

◇ Main Features LTE 4G, Android IP67 rugged smartphone, professional walkie talkie. ◇ Basic Info ◇ Release 2017 April ◇ Walkie talkie output 4W DMR; 4W FM 420-450MHZ ◇ Display 4.7″ 1280*720 HD ◇ Touch Panel IPS capacitive scratch resistant touchscreen ◇ Glove wearing touch Support ◇ OS Android 6 ◇ Platform MTK6735 Quad core […] Read more