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5 Results Found For "noise"
STAMPFL HAM Electronics VT5-S Active HF Receiver Multicouplers
STAMPFL HAM Electronics VT5-S Active HF Receiver Multicouplers were developed according to a design by Günter Fred Mandel DL4ZAO especially for SWL (Shortwave Listener) covering 9 kHz to 52 MHz. The VT-5S distributes a single near zero-Ohm star point (HF antenna input) to five outputs with a passive distribution network. This decoupling of the individual outputs prevents connected devices from influencing each other without level losses using a low-noise, high-dynamic RF amplifier and a push-pull output stage. These HF Multicouplers ensure high signal stability, minimal self-noise, and strong isolation between outputs. Additional protections include ESD protection on the input and short-circuit protection for the bias-T, which can remotely power active antennas. The VT5-S Multicoupler is designed to supply an external stabilized DC voltage . With an operating voltage in the range of 11.7 to 15VDC. The DC voltage must be free of hum and noise. The current consumption is approx. 150mA (at 13.8VDC). The DC supply is connected via a center positive 2.1mm ID (5.5mm OD) DC barrel plug. With its compact, lightweight design, the VT5-S delivers reliable performance for professional and hobbyist HF monitoring stations.
Not Yet Reviewed
$309.71
Alinco DR-MD500T Advanced Dual Band VHF/UHF DMR Mobile Transceivers
Alinco DR-MD500T Advanced Dual Band VHF/UHF DMR Mobile Transceivers add to its existing line-up of Digital Commercial/Business or Amateur Radio products. The DR-MD500T has features such as Color LCD Display, 55W Output Power on VHF, and 40W on UHF, as well as up to 4,000 Memory Channels, 10,000 TalkGroup, and up to 300,000 contact lists. Capable of operating in digital and analog with mixed mode in VFO or Memory mode. The DR-MD500T utilizes DVSI's AMBE+2 vocoder for crystal clear DMR digital audio for use in noisy environments like construction sites, parks, security applications, or your favorite repeaters coverage area with no noise or fading even in low lying areas. The DR-MD500T has powerful 2W audio output power to ensure loud crisp receive audio. Alinco DR-MD500T features: * DMR Tier I and Tier II * MAX output power 55 watt (VHF)/40 watt (UHF) * 4,000 channels, 250 zones, 250 scan lists * 300,000 digital contact list * Large 1.77 in. LCD display * Automatic Repeater Roaming * Single or dual channel selectable * Displays DMR ID, Call sign, Name * X-band repeat, analog uplink/digital downlink or vice versa * FM Broadcasting receiver with 100 memory channels and VFO * AES 256bit Encryption (digital mode) * SMS (digital mode) * Communication recording (digital mode) * Individual/Group/All call (digital mode) * CTCSS/DCS/DTMF/2Tone/5Tone encode and decode (analog mode) * Allows CSV export/import of setting parameters * Programmable Auto Repeater Shift in VFO mode * Kill and Stun functions * VFO/MR switch * FCC Part 90 certified
( 11 )
$379.95
Fobos Wideband General Purpose SDR Receivers
Fobos Wideband General Purpose SDR Receivers offer exciting functionality designed to elevate your radio communication experience. This is a high-performing Software-Defined Radio receiver encased in a sleek, attractive blue aluminum body. Equipped with High-Speed USB 3.0, Fobos SDR ensures quick data transfer and easy device connectivity. The compact and EMI-shielded construction further enhances its durability, making it ideal for a variety of challenging environments. We are proud of the primary features of our new Fobos SDR • Broad Frequency Range: Fobos SDR offers a continuous operating frequency range from 100 kHz – 25 MHz (direct sampling) and 25 MHz – 6 GHz (double conversion heterodyne). • High-Quality Signal Conversion: Dual conversion, two HF channels, 14-bit ADC, 50 MHz IQ rate. • Continuous Data Stream: Uninterrupted recording and real-time analysis. We've enhanced Fobos Software-Defined Radio (SDR) receiver with updated features and improvements. • Added a custom GPO port for 8 lines (general purpose output – software-controlled digital outputs) for remote control of the SDR. • Improved frequency response. • Added protection against static electricity and input voltage surges. • Minimized influence of parasitic harmonics and improved resistance to noise. • The low-pass filter for HF1 and HF2 is designed for a cutoff frequency of 24 MHz. • Improved stability of USB stream. All functions mentioned above can be performed simultaneously! Fobos SDR also offers robust software support, compatible with Windows and Linux platforms. It includes a lightweight API, support for an external clock input, and straightforward driver installation that ensures a smooth user experience. Additionally, it is widely compatible with popular software such as SDRSharp, HDSDR, SoapySDR, Delphi library, GNURadio, and HDSDR ExtIO plugins, along with native uSDR support. All source codes are available on GitHub page and provided with LGPL-2.1 license. This is the best quick start SDR Receiver kit for additional software development, education and equipment evaluation. FOBOS Wideband General Purpose SDR Receivers are an excellent choice for hobbyists, researchers, and professionals in the field of radio communication, providing tools to fully leverage SDR technology.
Not Yet Reviewed
$485.00
Alinco DR-MD520T Advanced Tri-Band VHF/UHF/DMR Mobile Transceivers
Alinco DR-MD520T Advanced Tri-Band VHF/UHF/DMR Mobile Transceivers are the latest addition to the Alinco Amateur Radio lineup. These advanced tri-band mobile DMR 144/220/440MHz radios come packed with features such as: a large 1.77 in. color LCD display; easy-to-use front panel; a hand microphone with built-in remote-control keypad; and a powerful 2 watts of audio output to ensure loud, crisp receive audio. Power output of the DR-MD520T is 55 watts on the 2 M band, 5 watts on 1.25 M, and 40 watts on the 70 cm band—and can operate in digital and analog with mixed-mode in VFO or Memory mode. A built-in GPS receiver also supports APRS in both analog and digital modes. Store up to 4,000 Memory Channels, 10,000 Talk Groups, 250 zones, 250 scan lists, and up to 500,000 digital contact lists. The DR-MD520T uses DVSI's AMBE+2 vocoder for crystal clear DMR digital audio for Amateur Radio applications or your favorite repeaters coverage area with no noise or fading even in low lying areas. Receiver capabilities include FM Broadcast and AM Aircraft Bands.
( 4 )
$449.95
AnyTone AT-6666Pro 10 Meter Mobile Transceivers
AnyTone AT-6666Pro 10 Meter Mobile Transceivers are single band transceivers that provide 80 Watts on CW and SSB (50 Watts on FM). This compact mobile radio has the features you want in a radio: Multi-Mode, adjustable tuning steps, Dual Watch Function, CTCSS/DCS codes, scan function, and is PC programmable. With 99 memories, there is sure to be enough memories to store your commonly used frequencies. Covering all modes on the entire 10-meter band, this compact radio is a perfect fit for today's vehicles. The front panel features a 6-pin connector for the microphone, and the rear panel features an SO-239 for the antenna connection, a speaker jack and the connection jack for PC Programming. Software is available from AnyTone's website. The large display provides information as to the status of the radio including the current mode of the transceiver, frequency, memory channel, status of various functions, and signal strength. It is also possible to change the backlight color to any one of 7 predefined color options as well as the brightness of the display. Additional features include tuning steps ranging from 10Hz to 1MHz, Clarifier, Noise reduction on both Transmit and Receive, squelch and automatic squelch on AM and FM, Repeater offsets, VOX, and a user-defined button on the microphone. The AnyTone AT-6666Pro provides the features that you expect in a compact, professional-grade mobile transceiver. The AT-6666 has modest power needs for a radio that can output 80 watts, requiring only 15A at 13.8VDC and will fit in most vehicles with its small size at 9.92 in x 6.22 in x 1.89 in. Additional Feature and Specifications: • LCD display with 7 color options and back light dimming • FM, AM, USB, LSB, CW, PA modes • Frequency Tuning Steps: 10Hz, 100Hz, 1KHz, 5KHz, 10KHz, 100KHz, 1MHz • ± 500Hz, 5KHz Clarifier (R/T/R+T selectable) • Flexible menu functions and PC programming software • RX and TX NRC Noise Reduction • SQ, ASQ Function (FM and AM mode) • RF GAIN Adjustment • RF PWR Adjustment • VFO / BAND / Memory Channel Modes • Repeater Shift / Offset Frequency Function • CTCSS/DCS with RX/TX Split functions • SCAN Function • NB/ANL Function • DW DUAL-WATCH Function • SWR, S/RF meter Function • TOT function • HI-CUT Function • EMG CALL • SWR Protection • Power Supply Voltage Protection • Key-Lock Function • DTMF Function • BEEP Prompt • Enhanced VOX Function (VOX.SPK can support digital mode operation) • ECHO Function • Programmable RB Function • AM TX NPC • User Defined (PF) key on microphone • Audio path select • +10KHz Function Dimensions: (LWH): 9.92 x 6.22 x1.89 in. Weight: 2.80 lbs.
Not Yet Reviewed
$299.99