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This antenna, manufactured by "Force -12 Texasantennas" is a full size true vertical dipole for 10m capable of 5kW and resistant to winds of up to 90mph when guyed once. It covers the whole band from 28.0-29.7 MHz at a SWR of less than 1.6:1. It utilizes T-Bars at the end to work...

Published on 1/21/2012, 7:24 AM by ZL1DAS | 0 comment(s)

Tags: Sigma-10 10m Vertical

CHAMELEON HF MULTIBAND ZEPP ANTENNA 10M – 80M

The Chameleon HF Multiband Zepp Antenna has been specially designed for apartments, condominiums, homeowners associations, deed restrictions and CCRs (Covenants, Conditions & Restrictions), ARES, RACES, MARS, EMCOMM, NVIS, First Responders, Emergency Preparedness and attic...

Published on 1/21/2012, 7:07 AM by ZL1DAS | 1 comment(s)

Tags: CHAMELEON HF MULTIBAND ZEPP ANTENNA 10M – 80M

California Near Space Project

California Near Space Project Ron Meadows, and his son Lee, Leaders of the California Near Space Project, http://californianearspaceproject.com/ successfully launched an amateur radio high altitude balloon...

Published on 1/13/2012, 7:26 PM by LU1DZ | 0 comment(s)

Tags: ballon lu1dz

HamQTH 6 months anniversary

HamQTH 6 months anniversary http://www.hamqth.com/index.php HamQTH.com started 6 moths ago. Information about new free ham radio call book was published on 29 of June 2011. When it started we had a few problems with old records for many US stations. I did a mistake in script that...

Published on 1/3/2012, 5:57 PM by LU1DZ | 0 comment(s)

Tags: qsl address callbook lu1dz gacw ok2cqr cw morse

Johnny Cash Birthday Celebration Special Event Station

Members of the Northeast Arkansas Radio Club (NEARC) will be conducting the inaugural Johnny Cash Birthday Celebration Special Event Station on what would have been the late Country Music Hall of Fame and Rock and Roll Hall of Fame member’s 80th birthday, February 26, 2012 beginning at...

Published on 1/2/2012, 5:56 PM by N5ASH | 1 comment(s)

Tags: special event station johnny cash arkansas dyess delta n5ash

R5 Matching Unit Rebuild

Here is some good info that was shared to me. OverviewThis article describes how to rebuild a matching unit of a Cushcraft R5 vertical. Below are a few pictures of a re-built and slightly modified R5 matching unit. The transformers and choke of the matching unit were assembled using the...

Published on 12/11/2011, 3:24 PM by KD8BIG | 0 comment(s)

Tags: Antennas

Installing a DX-70 TH in a ProStar Semi

I got back into trucking and the company I will be working for says I can install anything I want in the truck as long as I hook it to the fuse box. As we all know we should hook to the battery, but under their order I need to hook it to a 30 amp slot in the fuse box. I have one question, is it...

Published on 12/7/2011, 9:59 PM by kb0wzh | 1 comment(s)

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Sporadic E Links

Numerous research papers covering the ionosphere and sporadic-E exist online - too many to list here. The papers below are those which I have found use in, are currently "hot topics" in the field, or newly posted online. Listing here does not necessarily mean that the...

Published on 11/21/2011, 5:00 PM by KD8BIG | 1 comment(s)

Tags: propagation

About Sporadic E

Sporadic E is an unpredictable natural phenomenon the occurs in the E region of the ionosphere. This phenomenon is best known to hobbyists by the resultant radio wave propagation that occurs.While sporadic E is unpredictable, numerous correlations and observations have been made, by...

Published on 11/21/2011, 4:59 PM by KD8BIG | 1 comment(s)

Tags: propagation

Electrically-Short Dipole Antennas

A dipole antenna normally is cut for approximately one half of a wavelength. The customary formula is (468 / F) feet or (142.65 / F) meters where F is the frequency in MHz. This works out to about 0.48 wavelength. The dipole antenna has seen little use...

Published on 10/24/2011, 4:30 PM by KD8BIG | 2 comment(s)

Tags: antenna

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