I came across an interesting antenna design recently and I just had to build one to try for myself. The original version is a commercial antenna, built for the Australian military, called the Bushcomm Mil-1. The manufacturer claims it presents a low SWR from 3 to 30 MHz without a tuner. It is quite an … Continue reading A tunerless 3-30MHz tactical field antenna – too good to be true?
Tag: Antennas
TechTip #5: When is a balun not a balun?
TechTips are occasional brief posts describing easy ways to do difficult things. What is a balun? The simplest definition is "a device for connecting a balanced line to an unbalanced line." Many hams use the term generically to refer to the device that goes in between the antenna wire and the coax. In some cases … Continue reading TechTip #5: When is a balun not a balun?
Lazy Susan – a directed energy field antenna for the 20 m band
Ham Radio Outside the Box has been re-examining the 3/8 wave vertical antenna with shortened raised radials that was first published here in 2024. She was called "Long Tall Sally" (after the 1950s Little Richard song). Her vertical radiator wire was 25ft long and the two raised radial wires were each 5ft long. Apparently the … Continue reading Lazy Susan – a directed energy field antenna for the 20 m band
Repost: Introducing an antenna called “Long Tall Sally”
Way back in February 2024 Ham Radio Outside the Box published a post titled "A Most Unusual Vertical Antenna for 20m". It introduced the idea that the radiating element of a raised quarter wave vertical antenna could be stretched to a much longer length with a corresponding shortening of its radials. The idea is worth … Continue reading Repost: Introducing an antenna called “Long Tall Sally”
Dipoles on the Air
Not another "x-On The Air" program surely? Yes, that's right, not another "x-On The Air program" at all. Instead this is a post about why I have come around to the way of thinking that simple dipoles may be the best antennas for portable field operations after all. I will present my case and let … Continue reading Dipoles on the Air
Are you a DXer?
Ham Radio Outside the Box received this interesting email from DX Marathon Ambassador · Chile, Luis Soto Neira CA6SNT. If you've been on the air working DX this year, you almost certainly already have a 2026 DX Marathon score without knowing it. I help promote the DX Marathon, and I'm trying to get hams from … Continue reading Are you a DXer?
TechTip #3 Improving the “Titanic” 40m field expedient backpack portable antenna
TechTips on Ham Radio Outside the Box are brief posts of a technical nature. Back in October 2024 Ham Radio Outside the Box introduced an interesting design for a compact, field portable antenna for the 40m band. Named the "Titanic", it was a T-antenna similar in appearance to the one used on the tragically famous … Continue reading TechTip #3 Improving the “Titanic” 40m field expedient backpack portable antenna
No loading coils, no top-hats, no transformers, no ununs, no baluns, no tuners, no radials – just the perfect antenna?
Just imagine, if you could get rid of all those lossy loading coils, impedance transformers, ununs, baluns, tuners and ground radial trip wires. What do you have left? Could it be the most perfect, the ultimate, 100% efficient, dream antenna? Yes, yes; it's a dream! But back in the real world ... I spent most … Continue reading No loading coils, no top-hats, no transformers, no ununs, no baluns, no tuners, no radials – just the perfect antenna?
An Outside the Box look at the 48 inch base loaded vertical antenna
It's not the smartest idea really is it? A quarter wavelength vertical whip for the 20 meter band should be around 5 meters (17ft) tall. Why build a vertically challenged whip that is less than a sixteenth of a wavelength long and expect it to work? And ... with a QRP transceiver too! Yes, indeed … Continue reading An Outside the Box look at the 48 inch base loaded vertical antenna
TechTip #3 Radials and counterpoises
TechTips on Ham Radio Outside Outside the Box are occasional short posts on specific technical topics. But beware, along with regular posts here on this blog, the content is not a definitive technical treatise and should not be read as such. I write about my own opinions and experiences; your opinions and experiences may be … Continue reading TechTip #3 Radials and counterpoises
