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…
Author: Simone
Born in 1970 currently live in Florence Italy.
Married with 2 childrens work as IT Technician.
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)…
Mirrored J-pole
The mirror-image J-Pole is very easy to construct and requires only two T-Fittings plus a length of copper pipe.To visualize the antenna, one must only picture a 3 half-wavelength vertical and a 2 quarter-wavelength vertical positioned a few inches away from and centered on the the tall vertical. Construction of the mirror-image J-Pole is accomplished…
Understanding propagation numbers
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…
Push pull 2m amplifier
Two 4CX1000A’s in grounded-screen push-pull – an amplifier that did not work. Describing this amplifier may seem a really silly thing to do, as it never worked well. However, someone else might learn from our mistakes, or even perhaps someone can tell us why it did not work. Background.A friend Paul G8WYI and I were…
PC-programming cable for Kenwood TH-G71A / TH-F6A
I wanted to make my own cable to program my Kenwood TH-G71A ham radio with a PC, but the owner’s manual simply did not show the pinout needed for the connector plugs. I searched the web but was not able to find this information but I did discover that several other radios used an RS-232-to-logic…
SWL home made antennas
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…
An Introduction To Amateur Satellite Ground Station Antennas
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…
Kenwood TS-850S Mods
As posted to the CQ Contest e-mail reflector… Subject: TS-850 contest mods (long)Date: 4 Jun 1997From: David O Hachadorian, K6LLOrganization: cq-contest Mailing List [CQ-Contest] There was a huge number of requests for the TS-850 mods,so I’ll just post them here. Mod for External Keying, While Using the Internal Keyer –by N7EXFront Panel CW Sidetone Level…