Here you can find articles I’ve cached, that are no more available in the net or are very rare to be found. Where possible credit will be given to authors.
Planning to setup a double bazooka antenna for 7 MHz during next months to verify performance of the Gap Titan DX on that band. I feel like the GAP is not so well performing on that band and I’m goint to setup for the CW portion of the 40 meters. This is the basic schema
Santa recently dropped this lovely gift to my son…..Well, I had to learn a little bit about how to use it before I taught him. I got inspired by the IARU World Amateur Radio Day leafleft..
I’ve recently introduced a Raspberry PI 4 as main remote RTX controller for my Kenwood TS-590s. This allows me to control the Kenwood TS-590S from the iMac simultaneously with several applications, including RUMLOG, FLDIGI, WSJT-X. The issue Could not control simultaneously my transceiver directly from two or more applications. Additionally remote connection from the internet
About vertical antennas by W1ICP
The Clemens match is easy to make and reliable, and is preferable to a single Gamma match as it is balanced. I was first introduced to the Clemens match by G4IGO several years ago, Ken builds his in a slightly different way by putting the capacitor at the feeder end and connecting the far end
Taken from a usenet post by John Doty in 1996 In article <9612182335114148@mogur.com> len.anderson@mogur.com (Len Anderson) writes: > TV>> I wonder if a longwire balun would help match the impedance & provide a> TV>> better signal? > No, it will (primarily) change only the magnitude of the antenna> impedance over frequency. Some bands will have
FIG. 1 shows the relative gain (loss) of an antenna (e.g., dipole or beam), under varying ground conditions, through the frequency range of 5-30MHz: A represents the curve under perfect ground conditions, B under average ground conditions (i.e., wet grassland), and C under poor ground conditions (dry desert). Note that the influence of ground conditions
How To Read Propagation Numbers The A index [ LOW is GOOD ] 1 to 6 is BEST 7 to 9 is OK 11 or more is BAD Represents the overall geomagnetic condition of the ionosphere (“Ap” if averaged from the Kp-Index) (an average of the eight 3-hour K-Indices) (‘A’ referring to amplitude) over a
Home-made antennas can greatly improve the performance of AM and FM radios, short-wave receivers, and scanners. If you are a talk-radio fan then experiment with the AM band antennas and you will be able to hear shows from all over the country with surprising clarity. Short-wave receivers are always coping with weak signals and they
There are many kinds of satellite antennas that will get you on the birds (some better than others) and allow you to have lots of fun. If you are new to amateur satellites, though, all the options may be confusing, or worse, a disincentive to try the birds. It’s really not that bad. I offer