Use a 54” piece of 450 ohm Ladder line. Cut out 3 inches of the center part of the ladder line. Solder a PL-259 on the bottom of the Ladder Line (both side of the ladder line will solder on the ground side of the PL-259 – this is used for the shorted part of…
VX-7R modification
Mars Cap and freeband modification for the VX-7R transceiver
J-pole Antenna Revisited Yet Again
I recently had a conversation on the radio with another Ham who had built a 6 Meter wavelength band “J” antenna. He was getting some rather strange performance from this design, so I asked him where or how he had come up with the antennas dimensions. He referenced an Internet web page to me where…
Frequency Filer
Frequency Filer is database program designed for people who use a great many different radio frequencies. It is primarily intended for amateur radio operators, shortwave listening enthusiasts, and scanner users. The program makes it easy to keep all of your important frequency information in one place. Geographic information can be displayed on a high resolution…
Perfect Ground vs. Poor Ground. What is the difference?
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…
G5RV Antenna
This article reports the results of searches performed on the G5RV antenna. As stated in several articles concerning the G5RV antenna an specially in old French books written by R.A. Raffin, F3AV and R. Piat, F3YX and more recently. Unfortunately years have passed and I only kept in memory that at the bottom of the…
80m Loop EZNEC Analysis
Antenna data, and design note for this horizontal loop antenna resonating on 80 Meters by K0ZE
VHF/UHF Quad Antenna
The information in this article has come from many amateur sources, the most notable was from WA6TEY (sk 1985) Ray Frost, who was a pioneer of VHF Quad designs and one of the best Southern California Transmitter Hunters of the 1980’s. Ray built hundreds two meter quads in single and paired configurations as well as…
The Inverted V antenna
Dimensions for the inverted V antenna from 160 to 2 meters by N6JSX
IC-706 modifications
This modification has been found on the net. Please use at your own risk. WARNING: Improperly performed modifications can severely damage your adio. I have performed these modifications successfully, but I offer no guarantee or warranty for them. Proceed at your own risk. TOOLS NEEDED: 1) Small philips-head screwdriver 2) Tweezers 3) Magnifying glass 4)…