Messing around with making inductors for a 2m band pass filter and measuring them with the NanoVNA. I made an OK-ish fixture with some RG-316, SMA connector, and alligator clips, and calibrated it with the fixture attached. Getting pretty close to the 100nH I need for these! #HamRadio #AmateurRadio
Beginnings of an (I hope) SSB direct conversion receiver for the 2M band. This is just the VFO. And I’m very much learning here.
It uses an SI5351 with two signals 90 degrees out of phase. Controlled by a Pi Pico. While the code works, I’ll need to make it more efficient to handle the other duties that I plan for the Pico. This is my first Pico project, too. I’m using the Arduino IDE. #HamRadio #AmateurRadio
Finally got my new (to me) Kenwood TK-760H ex-commercial rig on the air today! Had a chat with a guy on the local 2m repeater who confirmed good audio from the replacement mic I bought. Radio is capable of 45W but I’m running 25W into the local repeater through my copper tape/duct tape J-pole. Very happy with this setup! #HamRadio #AmateurRadio
I built a duct tape/copper tape 2m band j-pole antenna today that seems to work great. I managed a 1.2-1.4 SWR across the whole band. Attached photo shows it hanging in the corner of my office above my desk. I used my NanoVNA to find the feed points. Attachment of coax is via neodymium magnets with bolts through them. Ideas all from various YouTube channels. Fun! #HamRadio #AmateurRadio
Sorry, no caption provided by author
Sorry, no caption provided by author
A strip of duct tape hangs in the corner of an office. The tape is actually an antenna.
Allstar node in progress! CM108 sound card modified. More to come… #HamRadio #AmateurRadio
Michael Dexter
boosted
If you're in the Portland, OR area and curious about amateur radio, the local club's field day is this weekend.
If you're in the Portland, OR area and curious about amateur radio, the local club's field day is this weekend.