Ham Radio: Workbench 8 Antenna Analyzer (K6BEZ)

This week on the HamRadio 360 Workbench, George and Jeremy sit down with Beric Dunn (K6BEZ), the designer of our Antenna Analyzer project! Beric is a professional RF design engineer by trade, and he wanted to provide a project that would allow a ham to learn some fundamental principles while making a useful gadget.


The K6BEZ antenna analyzer will provide VSWR measurements for any antenna from 1 to 30 MHz.  Frequency and VSWR is shown on the built in LCD display.  Data can optionally be sent over the USB cable to a PC running a program that will plot the VSWR on a graphical window display.
The analyzer can be programmed to scan any sub band and has built in ranges for 160m, 80m, 60m, 40m, 30m, 20m, 17m, 15m, 12m, 10m.


Jamboree On The Air and Camp Hope Special Event both happen this weekend!

Jeremy – News

RFinder H1A/B/C –

$625 A – 2M Analog Only

$700 B – 440 Analog/Digital

$800 C-440 Analog/Digital, bright screen

Dualband DMR

Anytone Radios –

Baofeng –

George – News

PackTenna –

Digilent Analog Discovery 2 –

Murata switching supply the size of a 7805 for $5 – OKI-78sr-5/1.5-W36-C-

Insurance for my radio options?

ARRL Insurance

Inland Marine Policy with your provider


  1. I was just listening and got to the part about the Si5351 discussion. Just wanted to mention that in addition to the Adafruit Si5351 board, there’s another one from Etherkit/NT7S that was designed with amateur radio applications in mind. The latest iteration of the board has an optional TCXO for extra stability. Vias around the traces to three outputs also help reduce crosstalk between the outputs. He’s also written a very good Arduino library to go along with it.

    Si5351 board – https://www.etherkit.com/rf-modules/si5351a-breakout-board.html
    Arduino library – https://github.com/etherkit/Si5351Arduino

  2. As I was listening to this podcast, I came across the idea of a HR360 forum for posting tips and tricks, work-arounds etc., for the soon-to-be-released tuner kit, etc. Oh, and pictures of the HR360 hat in strange and unusual places.

    Of course, within 5 minutes of my tumbling to this ingenious idea, George and Jeremy discussed it – – and promptly dismissed it in favor of the book of face.

    IMHO, a forum would be the best place for something like a tuner fix and mods discussion, as well as other HR360 discussions. FB is too difficult to use for searching for something, even if you set up a dedicated page for the tuner, another for the soldering iron shut off, and one each for the future projects. The forum gives you the ideal place for that, is easily searchable, and keeps all of the info in one place.

    My $.02 . . .

  3. Just wanted to chime in about the Murata 7805 replacement that is a switcher rather than linear regulator. You mentioned it was kind of pricey at $5 versus $0.50 but could be helpful to keep the heat down. A lot of people use this to generate 5V from a 9V battery and almost half of the power (4/9ths) goes into heating up the regulator. With the switcher version you get to use a lot more energy so this can pay for itself relatively quickly since 9V batteries are usually abou $2.

  4. Looking at the schematic and board files, and I can’t figure out what the tone and aux pads are for? Am I missing something?

    1. These are unused pins from the arduino that were broken out in case the user wanted to do something with them. They are not required!

  5. I think I may have found the problem with people having the blocks only display. The reset pin on the arduino is shorted at the pcb due to the solder pad not having enough clearance ( appears both sides). I scrubbed the copper back but still has a short looks like solder mask slipped during production. It was painful soldering because the clearance was so small. I have a decision to make, get a new board and try again. as my board is from the last batch., may have the same issue. tear the pins out and de-short the other side. A great project and i have learned alot

  6. Can the K6BEZ analyzer be modded to work on 2m and 70CM sorry if this has been asked before but for some reason I cant find this question being answered on any forums. PLS no flames if it has. thanks all


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