Even though the general availability of the 630 meter (472-479 kHz) and 2200 meter (135.7-137.8 kHz) bands to U.S. amateurs is a recent phe...| ka7oei.blogspot.com
QRM from a transmitter to receivers on lower bands A friend of mine belongs to a club in a town north of me and he was describing an issue ...| ka7oei.blogspot.com
As a sort of follow-up to the previous posting about the RX-888 (Mk2) I decided to make some measurements to help characterize the gain and ...| ka7oei.blogspot.com
Figure 1: The RX-888 Mk2. For information about improving reception below 1.5 MHz, scroll down to the text surrounding Figure 2. The RX-888...| ka7oei.blogspot.com
Portable antennas (verticals, loaded dipoles) typically use coils on the lower HF bands to make them electrically "larger" to alow them to ...| ka7oei.blogspot.com
Figure 1: The RX888 showing the "top" and RF connectors. While the heat sinks attached to the sides are visible, the large one on the "bott...| ka7oei.blogspot.com
The RX-888 (Mk2) and external clocking Figure 1: The RX-888 with external clock input (right) The enable/disable switch is barely visible be...| ka7oei.blogspot.com
