9th October
2014
written by Todd Harrison

Just a short update video letting my YouTube subscribers and Blog followers know why I haven’t been posting content for about the past 1/2 year. My next post will be a video update on the Kenwood TS-520S HF Ham Radio Arduino Frequency Counter PART 5. So you can look forward to that shortly. As always – “Thanks for joining, subscribing, following and thumbs up ratings.

Link to Steve’s website: http://www.kv6o.com/

In the video I mention I will post an inventory list of my vacuum tube collection so if a viewer needs one they can submit a request. I don’t have the list ready but when I do I will post a link to a PDF below and try to keep the file updated.

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18th May
2014
written by Todd Harrison

I took my kids to the meteor crater in Arizona USA on May 3rd 2014. I though it would be fun to share a few minutes of the HD footage I took of the meteor crater. The wind noise was very bad, sorry. If you can’t visit Meteorcrater in AZ someday then please enjoy my little tour of the crater. More details about the impact at Meteorcrater.

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30th March
2014
written by Todd Harrison

This is PART 4a (there is a part 4b below) of the project “Arduino Frequency Display For a Kenwood TS-520S HF Ham Radio”. This part covers switching to a new front end circuit as seen used by the DFD2 frequency counter from “Almost All Digital Electronics”. Their website is http://aade.com/DFD2inst/DFD2inst.htm

Links to all parts: (PART 1), (PART 2), (PART 3), (PART 4), (PART 5)

(PART 4A)

This is PART 4b of the project “Arduino Frequency Display For a Kenwood TS-520S HF Ham Radio”. This part covers testing the circuit and frequency counter software when connected to the Kenwood radio but still on a bread board. The final display is not ready so in this video I simply push the frequence counts to the laptop.

(PART 4B)

Here is the datasheet for the PLL chip I used in (PART 4). Other datasheets can be found in (PART 1).

74HC4046 Phase-Locked Loop with VCO (PDF)

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