The KN0CK HF Upconverting HF SDR Receivers were first introduced in January of 2013 and quickly became a best seller in terms of performance and cost against other RTL-SDRs on the market. With an embedded high performance 120 MHz HF Upconverter and MAR-8 preamplifier, a standard RTL-SDR becomes a remarkable HF Software Defined Radio Receiver that's capable of operation from the AM radio band (0.5 MHz) to the upper end of the 6m band (54.0 MHz). The up-front 5-pole Low Pass Filter and 120 MHz upconversion process ensures that the HF band will NOT be interfered with the FM radio band and other RF images that the other SDRs on the market marginally perform.

At the low cost of $75.00 + $6.00 US Shipping ($81.00 total) you won't find better performance in a small/portable package ANYWHERE in the marketplace!!



Use the player control below the frame to watch and listen to the KN0CK HF Upconverting Receiver in action..!!




The KN0CK HF Direct Sampling HF SDR Receivers were first introduced in August of 2013 and became a hot seller because of its great performance and LOWER cost against other RTL-SDRs on the market. Featuring an up-front 5-pole Low Pass Filter and high performance MAR-8 preamplifier, a regular RTL-SDR becomes a remarkable HF Software Defined Radio Receiver that's capable of operation from the AM radio band (0.5 MHz) to the upper end of the 6m band (54.0 MHz) just like the HF upconverting receiver, but using the 'Direct Sampling' mode found in the SDR# software application. The up-front 5-pole Low Pass Filter ensures that the HF band will NOT be interfered with other RF images that other SDRs on the market so often marginally perform. The Direct Sampling Receiver has similar performance to the HF upconverting receiver, but can only be used with SDR applications that employ Direct Sampling mode (SDR# among them).

At the low cost of $65.00 + $6.00 US Shipping ($71.00 total) you won't find better performance in a small/portable package ANYWHERE in the marketplace!!



Use the player control below the frame to watch and listen to the KN0CK HF Direct Sampling Receiver in action..!!




Here's a recent email from a customer who purchased one of the KN0CK HF Upconverting SDRs:



If you're interested in purchasing either the HF Upconverting Receiver or the Direct Sampling Receiver, please use the email form below to place your order and KN0CK (Marty) will get right back with you with the details..!

Thanks again for your interest in the KN0CK HF Software Defined Radio Receivers..! Hope to put you on the air soon listening to one of the most exciting advances in radio technologies that's come along in MANY years..!

 
Send Email orders to: martywittrock@juno.com