How to Self-Spot Off-Grid for SOTA/POTA Using HF

FT8 - the Marmite Mode Over in the UK grocery stores sell a product called "Marmite". It is a dark, sticky, yeast-based product with a very strong flavor. Aussies have a similar product called "Vegemite". These products are either loved or hated; so when the adjective "Marmite" is attached to something it means people are … Continue reading How to Self-Spot Off-Grid for SOTA/POTA Using HF →

Can Just 1 Radial Really Be Better than 8, or More?

If you follow the advice often repeated on Internet forums you will learn that to make a vertical antenna as efficient as possible you will need as many radials as possible. After all, the AM broadcasters can't be wrong - they use hundreds of radials at the base of their towers. That advice may be … Continue reading Can Just 1 Radial Really Be Better than 8, or More? →

9:1, 4:1, 1:1 or None:None?

When using a Random Wire antenna (also known as an End-Fed Random Wire - EFRW), the impedance at the feed end of the wire is usually higher than 50 ohms. In order to maintain a good match with a transceiver some form of impedance transformation is required to minimize SWR losses in the antenna system. … Continue reading 9:1, 4:1, 1:1 or None:None? →

A 200ft Wire Antenna Up Zero Feet – How Does it Perform?

One of my local stores was offering 100ft reels of 16ga insulated wire on sale for a good price. I have bought this wire before and was very pleased with its flexibility - an important factor for field portable use where the antenna is subjected to constant winding and unwinding. The wire extends 200ft across … Continue reading A 200ft Wire Antenna Up Zero Feet – How Does it Perform? →

Ditch That Automatic Tuner!

I was on the brink of pulling the trigger on the purchase of a new automatic antenna tuner for my portable rig recently, when something unexpected happened that slammed the brakes on the acquisition. For a few weeks I have been operating my Yaesu FT-891 with an LDG Z-11 automatic antenna tuner, but there are … Continue reading Ditch That Automatic Tuner! →

How Does a Ground Tuning Unit Work?

I have spent many hours in my reclining thinking chair, posting ideas on the back of my eyelids while contemplating this very question. How indeed does a Ground Tuning Unit (GTU, aka Artificial Ground) actually work? I have a fairly reasonable comprehension of the theory behind antenna tuners, but tuning an entire planet? Now that's … Continue reading How Does a Ground Tuning Unit Work? →

Ham Radio? What’s that?

Now we have moved into the summer season I have been getting quite a few folks stopping by while I am operating in a public park. Frankly, I prefer to be left alone to get on with my activation, but if somebody stops and starts to ask questions I feel I really should respond. Who … Continue reading Ham Radio? What’s that? →

The NVIS Illusion

I don't think there is any subject that is so misunderstood by hams as NVIS. I hope I can help by sharing some of what I have learned that may dispel some of the myths. NVIS is an abbreviation of Near Vertical Incidence Skywave. There is no such thing as a NVIS antenna. The term … Continue reading The NVIS Illusion →

My Custom Portable POTA Pack – does it work?

How many ways can you operate when activating a park for the Parks On The Air (POTA) program? I count 4 ways; I have tried them all but one is my favorite. #1 When I read the accounts of other activators on social media I conclude the most popular way is to operate from inside … Continue reading My Custom Portable POTA Pack – does it work? →

A QSO with a POTA Hunter Operating a Very Unusual Rig

I just returned from a 9-day POTA camping trip with my wife in Ontario's Algonquin Park region. We stayed in provincial park campgrounds using our travel trailer for accommodation. And, of course, I "activated" each park for POTA - with one exception, and there is a cautionary tale concerning that exception! The trip took in … Continue reading A QSO with a POTA Hunter Operating a Very Unusual Rig →