New One on 80m

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I woke up this morning to the coldest temperature Houston has seen in a very long time (-2C) and took great pleasure in the aroma of coffee and post-solar storm propagation on the low bands. It’s been a slow year for me on 80m and for DXing in general – it seems the only time…

A rare commercial posting

Pre-assembled, not kits

Via a mass mailing from LNR Precision: “We are happy to announce that LNR Precision will be soon opening up ordering for the LD-5, FX-4a, and the Mountain Topper. We expect the Fx-4a to open up for sale this week for the inital run of units with the LD-5 (mid-January) and Mountain Topper coming before…

Stirling power for radios? Not yet, but…

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Before the two Tom’s, Witherspoon (K4SWL) and Hanks (the actor), started promoting the concept of radio distribution to remote and impoverished areas of the world, there was Trevor Baylis who, in 1993 came up with the concept and initial design of the “self-powered” radio. Since then, the self-powered radio movement has spawned several similar radio…

Crossing the Atlantic with 2 milliwatts on 10m

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As I was letting my new WSPR transmitter stabilize yesterday afternoon I noticed a few stateside stations were decoding me even though the transmitter’s final amp circuitry was not yet on. Power output in this state is a bit under 2 milliwatts according to my recently calibrated QRP wattmeter. With that in mind, and considering…

Unusual (and expensive) HF antennas

2-30 MHz Vertically polarized Conical Monopole Antenna

My recent trip to OKC put me in close proximity to a lot of antennas. Two in particular caught my eye. More info about these and other similar antennas can be found here. . The first antenna is a vertically-polarized conical monopole covering 2-30 MHz. It is omnidirectional and used primarily for NVIS and shorter…

The Wichita Mountains – a drone’s-eye video

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I just spent a few days in Oklahoma and found time to drive to my favorite part of the state. I’ve done quite a bit of hiking, camping and QRP operating from the Wichita Mountains over the years but this time I left the HF radio gear at home and brought my video-capable quadcopter instead.…