Tag Archives: SDR#

KN0CK Amplified RTLSDR for HF Rev. 5 is Back!

Posted on June 5, 2014 by jwk

After some technical difficulties, the KN0CK Amplified RTLSDR for HF Rev. 5 is back! Now for sale directly through blog.KF7LZE, and including free shipping in the United States, and a free PAL to BNC adapter with purchase! Everything you need to … Continue reading →

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KN0CK HF Converter Rev. 4 is Released!

Posted on July 25, 2013 by jwk

The complete Rev 3 KN0CK HF Converter has sold out and been discontinued. That’s okay, though, because it’s been replaced with the KN0CK RTLSDR for HF Revision 4! This model incorporates a lot of the feedback from the community about the … Continue reading →

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Introducing Easy-Kits!

Posted on July 3, 2013 by jwk

I’m proud to announce a new venture from KF7LZE in partnership with KF7LZR! Easy-Kits strives to provide easy to find parts to complete the projects you find on my site, not to mention offering other interesting projects and parts to … Continue reading →

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Colorful NTIA Poster of U.S. Frequency Allocations

Posted on June 13, 2013 by jwk

This great infographic looks like it could really help me figure out who’s talking on all of those data channels I pick up with my RTLSDR. Click through for the full size, a 3.5MB JPEG.  You could also get your … Continue reading →

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Listen to Ham Radio Online with the ETGD WebSDR

Posted on June 1, 2013 by jwk

I just discovered the fascinating Wide-band WebSDR operated by the amateur radio club ETGD at the University of Twente in the Netherlands. PA3FWM built a fascinating wideband SDR using a Xilinx FPGA, high-speed ADC and gigabit Ethernet interface to receive … Continue reading →

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Australian TV Tuner Offers 4 RTLSDR Tuners in One Internal Card

Posted on May 13, 2013 by jwk

Over at RTL-SDR.com is a report of a fascinating development with the DigitalNow Quad DVB-T Receiver, apparently well suited to working as a very powerful multi-SDR solution. I just wanted to let you guys know that the Digital Now Quad … Continue reading →

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Coming Soon: KN0CK Rev B Integrated HF RTLSDR

Posted on May 1, 2013 by jwk

Marty KN0CK developed a very interesting v1.0 HF converter based on surface mount technology that fits inside the casing of an RTLSDR tuner dongle. He’s recently sent me schematics for the revision, which should offer even better performance! This new iteration … Continue reading →

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KN0CK HF Upconverter Fits Inside the USB Tuner’s Enclosure

Posted on February 19, 2013 by jwk

Marty KN0CK sent me some details to publish about his great looking miniature HF upconverter board for the RTLSDR, the HF Alchemy DVB-T Active HF Upconverter. It’s an incredibly miniature SMT board with an SA612 mixer and SMT oscillator, and … Continue reading →

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DIY SDR HF Up-Converter by WA7JHZ: Another good choice for your RTLSDR.

Posted on February 2, 2013 by jwk

Reader David Forsman, WA7JHZ, read the round-up of RTLSDR upconverter choices and sent me a photo and build schematic of one he designed which was featured in the January 2013 issue of QST, the ARRL‘s monthly magazine. This circuit up-converts … Continue reading →

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World’s Most Complicated FM Radio [RTL-SDR]

Posted on June 6, 2012 by jwk

After many hours of trial and error, I’ve turned my computer into one of the most complicated FM radios imaginable – and it’s nearly free. With just a cheap ($11) TV tuner based on the Realtek RTL2383 chipset and some … Continue reading →

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