70 receiver
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Internet and Radio : Online Receivers
- PSK31 Web Receiver
- These web receiver based in Kiew Ukraine show PSK31 activity on 20m band 14.070-14.074 MHz remotely by using a web browser. Requires java by the MixW team
[ Hits: 4527 | Votes: 18 | Rating: 6.73 ]
- FiFi SDR
- Is an economic and compact software-defined receiver. It is based on the Si570 oscillator and can be connected to a PC via the USB interface.
[ Hits: 1112 | Votes: 0 | Rating: 0 ]
- ADALM-PLUTO SDR
- The Adalm Pluto by Analog Devices is a Portable self-contained RF learning module, based on Analog Devices AD9363--Highly Integrated RF Agile Transceiver and Xilinx® Zynq Z-7010 FPGA. Includes one transmitter and one receiver, half or full duplex and cover 325 MHz to 3.8 GHz
[ Hits: 163 | Votes: 2 | Rating: 10 ]
- Recognition of CW signs at different listening levels and frequencies
- The recognition of telegraphy masked by noise at 40 and 80 signs/min telegraphy speed was studied in 10 normal-hearing subjects at different sound pressure levels (25-85 dB SPL in steps of 5 dB) as well as at different test frequencies (2000, 1000, 800, 630, 500 and 250 Hz). The ability to recognize the signs varied with varying SPL. Recognition for most of the subjects was best at an SPL close to 70 dB.
All subjects improved their recognition as the frequency was lowered to 500 Hz, some even at 250 Hz. These facts should be taken into consideration when training telegraphy operators as well as in the construction of radio receivers to permit listening at low frequencies. Furthermore, the critical ratio was calculated at the different test frequencies.
[ Hits: 81 | Votes: 1 | Rating: 7 ]
- Receiver Tests
- Receiver tests of some transceivers and receivers including FT-1000, FT-2000, IC-751, IC-756 IC-7800 and TS-870
[ Hits: 1118 | Votes: 4 | Rating: 2.5 ]
- W8WWV Icom 706MKIIG simple accessories
- Acc1 Breakout Box, Fused Power Cable with Accessory Tap, Microphone Breakout Box, CI-V Interface, Using the Auto Sound System for Receiver Audio
[ Hits: 3702 | Votes: 10 | Rating: 7.9 ]
- IC-7700 Receiver Tests
- Testing the Icom IC-7700 on the mediumwave broadcast reception by VA7OJ
[ Hits: 192 | Votes: 0 | Rating: 0 ]
- Kenwood TS-890S Sherwood HF Test Results
- Receiver performance review of the Kenwood TS-890S HF,50MHz,70MHz amateur radio transceiver by Sherwood Engineering
[ Hits: 514 | Votes: 3 | Rating: 6.67 ]
- LAN-IQ SDR
- Stand Alone Software Defined Radio, direct sampling receiver from 30 kHz to 1700.00MHz continuous frequency range, LAN interface for remote access
[ Hits: 258 | Votes: 1 | Rating: 8 ]
- Yaesu VX-170 VX-150 battery
- Yaesu VX-150, VX-170 BATTERY questions
[ Hits: 814 | Votes: 0 | Rating: 0 ]
- Dave's Radio Receiver Page
- SW receiver review's including the JRC NRD-545,WJ-8711A,AOR AR7030. Also ham transceiver reviews - misc.
[ Hits: 6163 | Votes: 12 | Rating: 8.09 ]
- CW Skimmer
- Multi-channel CW decoder and analyzer
for Windows XP/7/8/10. Simulatneously decode ALL cw signals in the receiver passband - up to 700 signals can be decoded in parallel and extract call sign
[ Hits: 7776 | Votes: 9 | Rating: 5.45 ]
- Virtual Legacy Radio
- Windows remote control for Yaesu or Icom. Displays the current transceiver settings frequency, mode, and others on the PC in an old-fashioned way that corresponds to the look of receivers in 70's.
DX-Cluster Watch (DCW) is an application that automatically refreshes a web page with the dx-cluster content, parses spot lines from it, keeps a consolidated list and inserts the spots to VLR as frequency markers by OK1FIG
[ Hits: 1845 | Votes: 6 | Rating: 10 ]
- Mode J Desense Filter
- This type of filter can be used in a Mode J satellite station (uplink on 2m, downlink on 70cm) to reduce the problem of the uplink signal desensing the receiver
[ Hits: 1156 | Votes: 2 | Rating: 5 ]
- Specan Spectrum analyzer
- The Specan is actually a very simple but robustly built receiver. it is, in essence, a double conversion superhet receiver with 112 Mhz and 12 Mhz Intermediate frequencies. The first mixer uses an Si570 as the local oscillator. The Ardiuno that controls the Specan is a very flexible microcontroller board that you can program in simple C language
[ Hits: 85 | Votes: 1 | Rating: 9 ]
- 2m to 70cm Transverter Circuit
- A 70cm / 432 MHz Transverter Project transverter circuit is an electronic device that converts a radio signal from the 2 meter to the 70 centimeter band and vice versa, allowing a single transmitter/receiver to be used for both bands. It consists of an IF stage, local oscillator, frequency multiplier, and amplifier. The circuit must be designed for minimal signal loss, noise and intermodulation distortion.
[ Hits: 77 | Votes: 0 | Rating: 0 ]
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