80m Loop EZNEC Analysis
Antenna data, and design note for this horizontal loop antenna resonating on 80 Meters by K0ZE
Category Archives: Homebrew
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)
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
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
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
The CobWebb Antenna
he G3TPW Cobwebb antenna covers five bands, 14 – 28 mhz, including the WARC bands. It is made by SRW Commuications Ltd (Steve Webb), Astrid House, Swinton, Malton, N. Yorkshire YO17 0SY (tel: 01653 697513). It is strongly made using fibre glass rods and comes pretuned, but is easily adjusted to one’s own frequency of