My first day on the amateur radio HF bands

I got into ham radio a few months ago and upgraded to a General-class license last weekend. This is a big step for ham radio people… the moment where you go from being able to talk to people ~30 miles away to being able to talk around the world. Anyway I went out and got a new 100W all-band, all-mode radio, an auto antenna tuner, a deep cycle battery, a 30A power supply, and a mini-Buddipole antenna. Woo!

I had a lot of trouble getting my first contact. I tried every night after work all week. I tried from Volunteer Park, my communal rooftop deck, and my friend’s roof on the 33rd floor of his building. I set the Buddipole up for 20m and heard people from the park but they couldn’t hear me. On my rooftop, I got nothing but S9 noise everywhere and couldn’t hear a thing. Same story from friend’s roof.

Well, I found that you can’t just use the settings that come in the Buddipole manual. Especially if you have the 8ft mast. It’s not high enough to do a 20m dipole efficiently (all RF goes straight up in the air. Read this whole book to understand). So you have to set it up as a vertical like this:

Buddipole as 20m vertical
Buddipole set up as a 20m vertical.

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Installing the RF shield in a HackRF One

I recently got a HackRF One software defined radio (SDR) to go along with my new Ham radio hobby. I’m new to all this, but one of the first things I noticed was that I was picking up a lot of radio frequency interference (RFI). I had purchased a RFI shield as part of the kit but had to install it myself. This post shows how I did it.

Opening the HackRF enclosure

The first challenge is opening the enclosure. To do this, first take the bolts and washers off of each of the SMA antenna connectors. Now, go in above one of the connectors with a little screwdriver (maybe put electrical tape over it) and start popping up the enclosure. Eventually you will pop it all up.

Installing the RF shield

Now we have to solder the RF shield onto the board. There’s a dotted line that shows where it goes.

Here's where the RF shield will go.
Here’s where the RF shield will go.

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