HAM SIGNAL

Thoughts,observations,experiments, and ramblings in Amateur Radio by N1DAY and KC4SIT.

LIGHTBULB QSO PARTY - CLICK HERE

The 50' coax rule has been eliminated. Click above button for updated rules.

KIWI SDR

David Day

04 Dec, 2017

MORE TO READ

SSTV Presentation by KC4SIT and N1DAY

02/11/2019

Ernie and I are having a lot of fun doing our new SSTV presentation to a variety of local radio clubs. As a number of people have been asking for the slides, here they are. Feel free to use them as you wish. SSTV SoftwareFinal.pdf 73 N1DAY
Details and power transfer

02/04/2019

I had a conversation with a ham last week who spent his career studying ways to improve RF power transfer. It was pretty interesting listening to him talk about all of the problems his team encountered at GE and some of the solutions they came up with. My take away from the conversation was that each little detail matters because the change in one detail can impact everything down the line as RF travels from transmitter down a piece of coax, through a matching unit, up a coil, and out onto an
Down There - a return to 2200M

01/30/2019

About this time last year, I bought a 300 watt P3000 Hafler amplifier to power my QRP Labs Ultimate 3S transmitter on the 2200M band. On my first attempts at 2200M using a rebuilt Hafler P1500 150 watt amplifier, I got my signal out, but at an estimated 0.4 watts EIRP, my signal was only being heard consistently by a handful of stations every night. All were close in to my QTH. After acquiring the higher power amplifier, I got tied up in the lightbulb experiments and pretty much abandoned