The ATU-100 EXT is the popular “Extended” version of David Fainitski’s (N7DDC) open-source automatic antenna tuner. It is widely used by homebrewers because it’s affordable, effective, and handles
Quickly homebrewed a 5W fifty ohm dummy load using twenty 1K resistors, each of 0.25W, in parallel. The combination was soldered on to a PL259 connector attached to
I was wondering which steady signal to use of tuning TOKO bandpass filters in Easy BITX. In my earlier stint on homebrewing about 4 decades back, I used
Initially when I assembled Easy BITX there was no audio at all. After fixing four 1N4148 diodes in the collector supply line of four RX transistors, it started
One of my viewers suggested homebrewing N5ESE’s Classic RF Probe. Though I could not source all the components exactly, I am going to try. The resistor mentioned in
Easy BITX PCB is densely populated and dual sided. So I found it difficult to identify the component connections on the reverse side where only a few SMD
Here is a head to head comparison of half wave dipole antenna and full wave loop antenna, both working on third harmonic, the odd harmonic principle, on 15m.
BITX means bidirectional transceiver with classic bidirectional topology developed by VU2ESE, where most circuit blocks are used for both transmitting and receiving by simply reversing the signal flow.
Read online that CLK1 of Si5351 in the Raduino board of Easy BITX generates the BFO signal and CLK0 the VFO signal. VU3EBS had already mentioned that the
Today morning when I checked my newly assembled Easy BITX once again, I could not find the local AM station breakthrough. Then I thought of checking the VFO
