Richardson Texas – Club Call K5RWK
by Bob Hill KG5WRY In a previous article I wrote about a low cost quick deploy portable antenna (in the February 2023 Chawed Rag). I described building the telescoping 16.5 foot vertical antenna and the ground spike mount (which has…
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By Chip Coker KD4C We’ve had Digital Voice modes on VHF for years, as well as other digital modes on HF that are very popular (FT-8/4, PSK, even RTTY). We’ve had Digital Broadcast TV since 2009 and digital satellite radio…
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by Mike Jahrig KG5P This month I’d like to talk about the so-called “Pi-beater” I’m not sure where the term originated, but it was probably by an RWK member on the RWK groups.io blog. In case you have been living…
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By Chris White WX7V I love my Elecraft KX3 but as I learned on a mini-DXpedition to St. Martin this summer, sometimes 10 or even 15 watts is not enough power to make a decent QSO rate, even with a…
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By Don Weeks N5SKT Recently the guys at Coffee and Ham Radios (CaHR) put together a little challenge to come up with a ham shack for less than $1000 and create a video around it. I had an idea to…
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By John Slaughter WB5HSI An opto-isolator is a light emitting diode and a phototransistor in the same package. The LED is completely isolated electrically from the phototransistor. Most devices have 1000 volts or more of isolation. The capacitive coupling between…
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By Chip Coker KD4C Those who know me and my ham radio experience know that I love 10 Meters. Early in my ham career (and in the peak days of solar cycle 21), I would come home from school and…
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By Mike Jahrig KG5P (Part 4 of a series) Last month we discussed four types of filters and investigated their behavior using the NanoVNA. This month we will use the Nano to identify the values of some junk box inductors…
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By Mike Jahrig KG5P (Part 3 of a series) Last time we discussed investigating the properties of low pass and high pass filters using the Nanovna. Today we will discuss 2 additional common filter types, the bandpass, and bandstop (sometimes…
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Or “Why Do I Hear Strange Things On The Repeater Frequency?” By Chip Coker KD4C Have you ever listened to the repeater frequency and swear you heard stations you didn’t recognize and a strange repeater ID? Well chances are your…
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