Iaru R1 432 Mhz Contest 2020 – 75 W and 4 x 20 elements yagi Hi. Same team YO8ROO, YO8SHU and me YO8RXP decided long time before contest to build and test 4 x 20 elements yagi.But as usual, the H metallic frame and 3 wavelenghts /4 combiner was done Read more
Improving reception in CW was always a top priority of mine, contest or dx cq. Having purchased a powerfull Sota Beam Vari audio DSP for an older project, I though why not buying another one and create a true spatial diversity headphones? While is just an ideea and was not Read more
Many hams do have ic7300 due to incredible functions, price and more… It’s arrival was a turning point into relations between manufacturers and final customers as from that moment prices for second hand products got lower and new products have had to keep up with it. For daily traffic I Read more
This was my 1’s time WPX contest ever in 25 years as ham radio. More elegant contest than CQWW while prefix multi was best choice not making a favor to a specific country. Decided to run for 20 meter band not assisted and RUN only (mostly). Worked for about 32 Read more
Ever wanted a high gain (ish) directive antenna on the cheap ? Tower + antenna + rotator is too expensive ? Well, it is about time to build a directive antenna using wood poles, some wires and ropes, 3 plastic boxes , 4 SPST 12V relays, 2 T92-2 toroids and Read more
Youtube bullsh…it about BLF188 being indestructible ! The test there was made using 100 Mhz pulse signal 1% duty cycle. The wire used as “SHORTCUT” is a hefty 3 cm long at least, so at 100 Mhz compute the reactive inductance !!! I made a HF amplifier using plain old Read more
15 February 2020, Arrl Int’l Dx Contest is just about to start at 00:00 UTC (2 AM local time). 10 hours before…. Jumped into car, went to grocery shop for subsistence food and beer and pushed the pedal to the metal hurrying to country location.Got there, sent the first beer Read more
Here is my daughter Amelia drawing ham radio activities. From left to right: Dad raising an inverted Vee Making path for a Beverage antenna Icom IC-7300 blue waterfall Dad chasing DX’s during contest
Chers all ! How many of us dreamed about having some kinda extreme narrow preselector for CW contests when lower bands is full of bigguns and transceiver front-end is getting overloaded? Well, I did it ! for 40 meter band and only some cw channels,otherwise it would be extremely expensive Read more
Linux controlling Icom IC-7300 In order to control IC-7300 using Python under linux we need to instantiate serial object first. ser = serial.Serial(serialport, baudrate) then we need to send some data via serial. Icom data is yet to study but for frequency change here is a simple script to do Read more