Richardson Texas – Club Call K5RWK
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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By Mike Jahrig KG5P (Part 2 of a series) This month I will continue my discussion of the NanoVNA. One useful accessory I have found is a RF Demo Kit that I bought off the internet from Banggood or somewhere…
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By Mike Jahrig KG5P A lot of RWK hams have purchased NanoVNAs. I recently obtained myself, and have learned that it provides a wealth of information in the shack. If you are not familiar with this device I suggest you…
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By Rob Forson K5WFR My family and I suffered through several days with no power during the winter storm of February 2021. Long before the inside temperature dropped into the lower 40’s, I swore that we would not be left…
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By Chip Coker KD4C Have you always thought that antennas were “magic”? Well hopefully you understand that there is actual physics involved in the way antennas work, even if it’s not obvious to us. In the past, RF engineers had…
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By Chip Coker KD4C By now, you may have seen or heard that the FCC published a change to their regulations in December 2019 that changes the Rules on RF Exposure evaluations. In short, in the past the Amateur Service…
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By Jon Suehiro NN5T You see this image on RWK home page – https://www.k5rwk.org/ . But what does it mean? You also hear about Solar Cycle 25. What do you need to know about the current propagation and solar conditions?…
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By Joe Hodgkins KI5O With wonderful consideration from Doug KD5OUG and direction from Grant W5XJ, I was fortunate to take intopossession an incomplete Knight T-60 Transmitter. Upon receipt of the contents in an original Knight box, I foundthe following correspondence…
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By John Slaughter WB5HSI Recently I was faced with trying to repair a battery-operated device and had the usual problem of how to make connections to the battery. Normally a spot welder is used to weld nickel strips to the…
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