KO7M - Ham Radio Blog

I have found a little gem of a transformer for my radio projects: The Bogen T725 audio transformer.  I basically gives you the ability to ma...

I picked up my old TNC2 packet controller and dusted it off today.  After finding an old Hayes modem cable I was able to wire this dude up t...

This morning I had some fun with my Arrow antenna and an old Yaesu 2 metre hand-held transceiver.  I generally track a hand-ful of Ham Radio...

Reading the brainwagon.org blog, I came across today an 8080 emulator that is implemented (of all things) in JavaScript.  I can load it up i...

After discussing with my buddy Eldon, I have decided not to use the voltage divider approach to power the filaments.  They are all wired in ...

A while back, I posted a note about having found an old 1930's National SW-3 receiver.  The rig came without a power supply.   I need to...

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...

With my renewed interest in old-tyme radios, I have decided that I need to have a good adjustable lab bench power supply that will give me f...

After a couple years of looking, I have located a National SW-3 receiver that is in good shape.  It came with a couple sets of coils, ...

Wow, has it really been nearly three months since I updated this blog?  Very sorry to be away so long.  I have a couple of new short posts t...