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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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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