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Repairing a dead RX-888 (no A/D converter clocking)
On this blog I have posted three previous entries related to the RX-888 (Mk2) which may be of interest to the reader:Figure 1 - The (stock) RX-888Using an external clock with the RX-888 (Mk2) - link -...
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Observations, analysis and modifications of the JPC-12 vertical antenna
The JPC-12antenna (possibly made by BD7JPC) is relatively inexpensive a portable vertical antenna - made in China, of course - that may be found for sale at quite a few places under a few different...
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Reducing QRM (interference) from a Renogy 200 watt portable solar panel system
Figure 1: Renogy 200 watt folding panel, in the sunClick on the image for a larger version.A year or so ago I got a 200 watt foldable solar panel system. This unit - made by Renogy - consists of two...
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Rewinding the stainless steel for silver-plated copper coils on the JPC-7 and...
Portable antennas (verticals, loaded dipoles) typically use coils on the lower HF bands to make them electrically "larger" - but what about losses in those coils?While it's "traditional" to use copper...
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Neon bar-graph VSWR/Power meter using the ИН-13 (a.k.a "IN-13") "Nixie" - Part 1
Figure 1: Power/VSWR meter using ИН-13 (a.k.a. "IN-13") neon bar-graph indicators.Click on the image for a larger version.Several years ago I bought some Soviet-era neon bar-graph displays - mainly...
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DRAFT - Neon bar-graph VSWR/Power meter using the ИН-13 (a.k.a "IN-13")...
Figure 1: Power/VSWR meter using ИН-13 neon bar-graphindicators.Click on the image for a larger versionIn Part 1 I laid out the requirements of the ИН-13-based neon bar-graph VSWR/power meter....
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Hiking and POTA (Parks On the Air) operation from Arches National Park (US-0004)
Figure 1:Double-O ArchClick on the image for a larger version.Earlier this month I had the opportunity to spend nearly a week in Arches National Park in south eastern Utah. As the name implies, there...
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