Building SDR Board.

This is SDR circuit base on Softrock TX/RX ensemble but find a local components. Target a project for using in VHF band. So step by step for design.

Interface a headset for yeasu

I promise my friend to make a headset and foot switch. He like a contesting and he give a foot switch to me and request to build interface. Now a first design a PCB was inform to him. 

Foot swith can connect with RJ45 at font of tranceiver. The interface's design to connect headphone and external mic. The foot switch connection with paralle to the PTT pin and ground.

Hopefully my friend and his son enjoy the contesting.

73 

SDR tranceiver

SDR for ham radio is growth to recommend in shack. I have a peaberrySDR and home-brew SDR HF receiver. Now I try do a build my own design. target is for using in VHF band that is for moon bounce experiment. 

iAPRS v2.0 new update for tracking your mobile phone.

After I updated iAPRS in my iphone.

I found new feature for tracking my Iphone and send data to openAPRS.org server. I can change add massage and disable a sleep mode for continue tracking position. Checking again two and three days  for more new feature. 

Project the Shack room ; Starting a plan (1)

Happy a new year. It's will late to say that but it's OK.

This month I just a big plan to making a shack room in my house.

I read a presentation from AB1OC in http://stationproject.wordpress.com.

This is a good reference for building a Shack room.

When I draft the room for 3 x 2.2 m. area and paste a tower near room on top floor.

I just design my room on the top because I live in residential and my landscape has a flood in some year.

This position is better. I guess a problem of ground wiring but I find a best solution.

Around my home is clear view and near a river. Expect north view was tall house.

Next we just plan all rig in my station.

73 / E22ICQ

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