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QRPblogAmateur radio, mountain hiking and more
http://www.qrpblog.com/
Amateur radio, mountain hiking and more
http://www.qrpblog.com/
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QRPblog | qrpblog.com Reviews
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Amateur radio, mountain hiking and more
qrpblog.com
July 2016
http://www.qrpblog.com/2016_07_01_archive.html
Amateur radio, mountain hiking and more. Onion Omega2 - $5 WiFi Linux computer. Is a miniature Linux computer with integrated storage and WiFi connectivity. It runs on Linux so it supports many programming languages such as C , Python, PHP, nodeJS etc, plus there are apps you can install for different purposes. Model costs just US$ 5 and comes with a 580MHz CPU, 64MB RAM, 16MB storage, b/g/n WiFi, 15 GPIO ports, 2x PWM, 2xUART pins and I2C, SPI and I2S interfaces. Baofeng UV-50X3 - new mobile radio.
October 2016
http://www.qrpblog.com/2016_10_01_archive.html
Amateur radio, mountain hiking and more. RedPitaya expands line-up with 7 StemLab models. The 21st century alternative to laboratory test instrumentation, have just replaced their single product with 7 new models called STEM lab. Anyway, back to the new models: the first 3 of them use a more affordable version of the Red Pitaya original board, that has the 14-bit ADC replaced with a 10-bit one. They seem to be aimed at the educational enviroment where functionality and pricing is more important than ...
HF One MKII - cheap mobile transceiver with SDR technology
http://www.qrpblog.com/2013/11/hf-one-mkii-cheap-mobile-transceiver.html
Amateur radio, mountain hiking and more. HF One MKII - cheap mobile transceiver with SDR technology. Is another big step towards a good and cheap HF QRP transceiver. Less than 8 months ago we saw the Xiegu X1M. A small 5W SSB/CW transceiver for HF that costs under US$ 300 and weights just 500grams, bringing serious competition to the Yaesu FT-817 for those QRP mountain hiking afficionados out there. This time, the chinese electronics industry brings us for about the same price - US$ 300 shipping. Made a ...
ESDR - new portable SDR HF transceiver
http://www.qrpblog.com/2016/04/esdr-new-portable-sdr-hf-transceiver.html
Amateur radio, mountain hiking and more. ESDR - new portable SDR HF transceiver. Is a portable SDR transceiver with HF coverage that is supposed to be released in August. The ESDR. Features a large color display, digimode decoder/keyer, 2x USB ports and micro-SD card. The required supply voltage is 12.6V and the maximum output power is 30W. S size and ergonomics seem to be inspired by the Elecraft KX3. Not the ideal concept for a rugged field radio. 22 April, 2016 01:06. What is a source of this news?
Yaesu FT-891 update
http://www.qrpblog.com/2016/05/yaesu-ft-891-update.html
Amateur radio, mountain hiking and more. Update: The Yaesu FT-891. Is the smallest at lightest 100W HF transceiver ever built, at 155x52x218mm and 1.9Kg. Unfortunately the 2A current draw on standby makes it unsuited for truly portable operations. Among other features worth mentioning would be the 3kHz wide roofing filter (yes, at the 69MHz IF) and the USB port that supports CAT, PTT keying and RTTY data. Yaesu FT-891 is on public display at Dayton 2016. 20 May, 2016 19:35. 22 May, 2016 11:49. HTs dont d...
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PA1B's QRPp Blog: Red Bull Test Antenna
http://pa1b-qrp.blogspot.com/2015/05/red-bull-test-antenna.html
Power Attenuator 1000 Miles per Watt WSPR Propagation Analysis. How I work with the Lowest possible power in CW QSOs with QRP and QRPp . PA1B Fast and accurate 40 dB Power Attenuators for QSO's. 0 - 36 dB Power Attenuator for 5 watts. Power attenuators for the FT-817. Woensdag 20 mei 2015. Red Bull Test Antenna. When I putted the. I was convinced that I could make QSO's with QRP or even QRPp from the shack. I was curious, whether I could use the antenna on 14 MHz. So I could transmit ...
PA1B's QRPp Blog: Power attenuators for the FT-817
http://pa1b-qrp.blogspot.com/p/power-attenuators-for-ft-817.html
Power Attenuator 1000 Miles per Watt WSPR Propagation Analysis. How I work with the Lowest possible power in CW QSOs with QRP and QRPp . PA1B Fast and accurate 40 dB Power Attenuators for QSO's. 0 - 36 dB Power Attenuator for 5 watts. Power attenuators for the FT-817. Power attenuators for the FT-817. A 10 dB attenuator reduces the power to 1/10. For instance, 500 mW will be reduced to 50 mW. A 20 dB attenuator will reduce the power to 1/100. Working with very low power. The maximum p...
PA1B's QRPp Blog: Calculate your Miles/Watt
http://pa1b-qrp.blogspot.com/p/calculate-your-mileswatt.html
Power Attenuator 1000 Miles per Watt WSPR Propagation Analysis. How I work with the Lowest possible power in CW QSOs with QRP and QRPp . PA1B Fast and accurate 40 dB Power Attenuators for QSO's. 0 - 36 dB Power Attenuator for 5 watts. Power attenuators for the FT-817. First determine your QTH locator with the excellent:. Find your QTH locator. Zoom in on your city. And then click on your street. To find your QTH locator. Then look up the QTH locator of the station you worked. ILLW fyr...
LA3ZA Radio & Electronics: First 475 kHz WSPR decoding
http://la3za.blogspot.com/2015/04/first-475-khz-wspr-decoding.html
LA3ZA Radio and Electronics. Unofficial Guide to Elecraft K2 Mod's. 29 April, 2015. First 475 kHz WSPR decoding. The first signals I decoded are shown in the water fall above, and their origin in Germany and the Netherlands is shown in the next figure. PA0A's 2 Watt transmitter is 784 km away from me, and DK7FC's 1 Watt is 1164 km away. The converter is quite simple and is based on a 74HC4053 switch used as a mixer with a 74HC04 for a 14 MHz oscillator. It is the design of SM6LKM. View my complete profile.
Forum pentru Radioamatori, Radioamatorism, Electronica si Radiocomunicatii
http://radioamator.eu/forum.php
Forum pentru Radioamatori, Radioamatorism, Electronica si Radiocomunicatii. Welcome to the Forum pentru Radioamatori, Radioamatorism, Electronica si Radiocomunicatii. Cu aceasta sectiune ar trebui sa incepeti. Aici gasiti regulile acestui forum precum si informatii sintetice. Citeste aici mai intai! Va rugam sa parcurgeti cu atentie aceste reguli. Mesajele pe care le veti posta vor trebui sa se incadreze in aceste reguli. View this forum's RSS feed. Regulament si conditii de utilizare a forum-ului. Discu...
PA1B's QRPp Blog: CQ WW WPX CW contest 2015 with an indoor 15" Cylinder dipole
http://pa1b-qrp.blogspot.com/2015/06/cq-ww-wpx-cw-contest-2015-with-indoor.html
Power Attenuator 1000 Miles per Watt WSPR Propagation Analysis. How I work with the Lowest possible power in CW QSOs with QRP and QRPp . PA1B Fast and accurate 40 dB Power Attenuators for QSO's. 0 - 36 dB Power Attenuator for 5 watts. Power attenuators for the FT-817. Zondag 7 juni 2015. CQ WW WPX CW contest 2015 with an indoor 15" Cylinder dipole. 15" Indoor Cylinder dipole PA1B. I had great fun in 56 QSO's in CW with S&P, with 20 DXCC countries with an indoor 15" cylinder dipole.
PE4BAS Amateur Radio Weblog: June 2015
http://pe4bas.blogspot.com/2015_06_01_archive.html
DX clusters and Sked pages. Tuesday, 30 June 2015. Personal Message Radio can be used for free here in the Netherlands. 8 channels in the 446 MHz band have been assigned for this and power output is max. 500mW. You don't need a license for this and it is ideal for communication on vacation. Now this Turkish company. UV-3R with Comet SMA24. Friday, 26 June 2015. Record distances on 6m. Map pictures are only from TX. I started this morning (3:45 UTC) and discovered the band was full of video carriers. ...
PA1B's QRPp Blog: 10 dB attenuators of Stefano IZ1OQU
http://pa1b-qrp.blogspot.com/2015/06/10-db-attenuators-of-stefano-iz1oqu.html
Power Attenuator 1000 Miles per Watt WSPR Propagation Analysis. How I work with the Lowest possible power in CW QSOs with QRP and QRPp . PA1B Fast and accurate 40 dB Power Attenuators for QSO's. 0 - 36 dB Power Attenuator for 5 watts. Power attenuators for the FT-817. Woensdag 3 juni 2015. 10 dB attenuators of Stefano IZ1OQU. On my Blog and website I show information, on how I work with QRP and QRPp and the use of attenuators for more than 1000 Miles per Watt. The 50 mW in SSB. I atta...
PA1B's QRPp Blog: Solar Eclipse WPA of WSPR spots by PE4BAS
http://pa1b-qrp.blogspot.com/2015/06/solar-eclipse-wpa-of-wspr-spots-by.html
Power Attenuator 1000 Miles per Watt WSPR Propagation Analysis. How I work with the Lowest possible power in CW QSOs with QRP and QRPp . PA1B Fast and accurate 40 dB Power Attenuators for QSO's. 0 - 36 dB Power Attenuator for 5 watts. Power attenuators for the FT-817. Zondag 7 juni 2015. Solar Eclipse WPA of WSPR spots by PE4BAS. Solar Eclipse WSPR Propagation Analysis (WPA) of spots by PE4BAS. The spots were made on 160 mtr, during daylight hours. The lower the Lowest Possible Power.
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Welcome to QR Pay | QR Pay
Skip to main content. Welcome to QR Pay. QR Pay Limited is a specialist technology company that focuses on the new and exciting area of Mobile Payments and QR Codes. QR Pay offers a range of QR Code related products including QR Pal, QR Pay, QR Track and QR API. QR Pal (www.qrpal.com). QR Track (track.qrpal.com). As QR Codes are used more in more in marketing activities it is essential for marketers to have the ability to measure and track the effectiveness of these campaigns. QR Track helps business...
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Home - Quality Recycled Parts
On Time. As Described. The QRPBC group has always taken pride in the Recycling industry being leaders in the environmental movement for years! We are truly the first recyclers and environmentalists and are proud of our track record! All of our members have Gold Accreditation status from AREA, the Automotive Recyclers Environmental Association. We recognize that every time industry recycles an automotive part that is less metal generated to manufacture a new OEM or After Market part. Trucks, vans and suvs.
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QRPblog
Amateur radio, mountain hiking and more. I finally managed to have myself some shack time this weekend and one of the curiosities I had was to check the output waveform of the Silicon Labs Si5351. I2C programmable VCXO. The chip is quite popular among homebrewers thanks to its low price, ease of use, the fact that it generates 3 independent outputs across a very wide bandwidth (8kHz to 160MHz) and that it offers lower phase noise than the cheap and cheerful AD9850/1 DDS modules. First test, 100kHz output:.
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QRPbug.com | Bit by the QRP bug! The ramblings of a demented experimenter.
Bit by the QRP bug! The ramblings of a demented experimenter. Skip to primary content. Skip to secondary content. Where is the QRP BUG? June 16, 2012. What is the QRPitis? There are rumors that the QRP bug is related to the use of a minimum amount of RF (typically less than 5 watts) when communicating. Those not infected, or those temporarily in remission, have a tendency to use higher power levels. Welcome to Amateur Radio Station ‘N0OE’. Are there other ‘bugs’ in this shack? What else is new?
QRP Builder - Welcome to QRPBuilder.com
Welcome to QRPBuilder.com. April 27. 2015 17:34:43. Welcome to QRPBuilder.com. Welcome to my corner of the QRP world. On this site I hope to pass along information, projects, and ideas to the QRP community. The articles will be of a mechanical, or construction nature, as opposed to circuit design. Don't be a "Passive Consumer" of someone else's imagination. Comments to: wa4mnt@gmail.com. WA4MNT PCB holder you can make, or build the kit, $23. Repackaged Weber MTR v2. 25 GHz Helical wifi antenna project.
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