KO7M - Ham Radio Blog

I have put up a QRSS grabber in Redmond, WA for those QRSS fans out there that would like to see how they are doing getting into this part o...

This morning I finished up my beacon power amp by putting in the low pass filter.  I had a bit of a struggle with that however, as I had no ...

Um...  Ok...  I lied...  It is just plain ugly construction... But, hey...  We are trying to prove a concept, right?  :)  Well, time to...

While I have enjoyed the few WSPR spots I have received: I have received no QRSS or Opera spots at all.  There are times when I think (...

I have taken the baseline beacons that I have created for QRSS, WSPR and Opera and put them together into a single beacon. WSPR is on a 10...

My Propeller beacon is now on the air on 30 metres.  Currently running QRSS near the bottom of the band (10.140.000) sending "KO7M CN87...

After wrapping the propeller board in foam, from a cold start, after about 30 minutes the frequency stabilized at about 30 Hz lower than the...

This evening, I have been experimenting a bit with my Propeller device.  I have a small script that turns on the RF synthesizer at 10_140_00...

Last evening, I shared the experience of creating a FeldHell-like QRSS beacon.  The bulk of the effort was in creating an acceptable font.  ...

Well, my old pal Eldon has really done it now...  So much for sleep it seems with new toys to play with... I decided to implement FeldHell...

Today I have built a low-pass filter for my Propeller beacon on 30 metres.  The spectrum analyzer shows the second and subsequent harmonics ...

Well, thanks to my buddy Eldon WA0UWH, I have been drug kicking and screaming into the world of Opera QRSS and the Propeller processor. St...

The beacon project is back on the front burner.  Frankly, one of the reasons that it has been stalled so long is because of the lousy UI per...

I know it has been forever since I started the Arduino beacon project and while the functionality is 90% or better complete, the project has...

The Arduino WSPR/QRSS beacon project has gotten to the point where it is time to try and get rid of some of the rats nest of the breadboard ...

I know that on 30 metres, the dial frequency of 10.1387 plus 1300 Hz is the bottom of the QRSS band and plus 1400 Hz is the bottom of the W...

I have been endeavoring to liberate I/O pins on my Arduino project.  To that end, I have moved to an I2C LCD interface .  This is necessary ...

I have been having fun messing around with an old DDS-60 board that I obtained some time ago.  I have cabled it up to the Arduino.  Here is ...