This is the story of my quest to build an all-tube VFO for Mark's main ham operating activity is 6 meter DX, with countries worked. As such, showing a good, progressive image of Amateur Radio, being "cool", and all that, dictates When I tune the store-bought superhet back and forth, my 1-transistor homebrew Superregen receiver picks up a 'full-quieting' spot that goes away. Amateur radio - homebrew SDR. Cigar Box 6 Watt Output Transmitter. Modern desktop- and mobile radios are perfect for these cases, also the most handheld transceivers have a lot of features for use in future.
SDR Station: HF to 24 GHz
ZL2PD Amateur Radio and Homebrew Electronics Website
The SDR concept is a flexible approach to building amateur radio equipment. The photo illustrates the multi band SDR rig at my operating position at home. The photo at the bottom of the Home page Home Page depicts an example of some of the same equipment configured for as a rover station for 10 GHz operation. The flexibility of this system can be seen from the arrangement of the front panel coaxial patch cables for 2 meter operation at home compared to the coaxial patch cables that link the SDR transceiver module with the 10 GHz transverter module. Let us review some of the big takeaway features of such and SDR system before I describe in detail the modules in the photo. Referring to the photo, the station can be divided into two parts: the HF equipment below the shelf and the VHF through Microwave equipment on top of the shelf. The HF station covers through 10 meters at the W level, using any modulation mode.
Homebrew Data Interface
A while back, I borrowed a Tigertronics SignaLink to operate data modes. This worked really well, so I looked into buying one. Data in and out seemed simple enough; I was going to use audio transformers to isolate the transceiver from the PC. I wanted the PTT line to be controlled by the right channel, because you can configure fldigi to put out the signal on the left channel and a constant tone on the right channel. I have included a trimmer on the output, but that is just set once and then left alone.
For anyone remotely interested in the person behind this website, a few more details can be found here. A truly compact LC meter. You use the information published on these web pages at your own risk! You may use the information provided here for personal or educational purposes but you may not reproduce it in any form or use this information for any commercial purpose without first obtaining written permission from the copyright holder.