A Multi-Band 33 Foot Dipole


See on Scoop.itKH6JRM’s Amateur Radio Blog

eHam.net Article: A Multi-Band 33 Foot Dipole – Work 20m, 17m, 15m, 12m, and 10m without an antenna tuner!
– eHam.net is a Web site dedicated to ham radio (amateur radio).

Russ Roberts‘s insight:

A fascinating antenna article from the always inventive Cecil Moore (W5DXP).  The key to his "multi-band 33 foot dipole" is a sophisticated switching and relay system that automatically adds or subtracts various lengths of 450 ohm ladder line without the use of a tuner.  By  switching in various lengths of feed line, he can "tune’ each band without resorting to a manual or automatic antenna "tuner".  If you’re mechanically inclined and have some time over the weekend, you may want to build his antenna system.  Apparently, Cecil has had excellent results from this "tuner-less" antenna.  Aloha de Russ )KH6JRM).

See on www.eham.net

5 tips to keep your three-phase UPS healthy year-round


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5 tips to keep your three-phase UPS healthy year-round

Russ Roberts‘s insight:

A quick, informative slide presentation by "eaton.com" on keeping your computer UPS alive and well.  Good, basic information.  Aloha de Russ (KH6JRM).

See on powerquality.eaton.com

EEVblog #584 – What Effect Does Your Multimeter Input Impedance Have? – YouTube


See on Scoop.itKH6JRM’s Amateur Radio Blog

What effect does your multimeter input impedance have on the circuit you are measuring? Dave shows a practical example of how it can really screw things up i…

Russ Roberts‘s insight:

Here’s the "dark side" of multimeter operation.  Excellent video with some useful operating suggestions.  Aloha de Russ (KH6JRM).

See on www.youtube.com

This Week in Radio History


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Feb 24, 1942 VOA begins operations from New York City. Feb 26, 1934 President F.D. Roosevelt urges Congress to create the Federal Communications Commission. Mar 1, 1949 First 45 rpm record issued by RCA: Texarkana Baby by Eddy Arnold. Mar 1, 1972 Intel introduces 8008 processor. Mar 2, 1897 Marconi granted first wireless patent

Russ Roberts‘s insight:

Another fascinating "This Week in Radio History" from reporter David Hall.  The only things I remember from this interesting list are the introduction of the first 45-rpm record ( I was a young lad then) and the introduction of the Intel 8008 processor.  Time flies when you’re having fun.  Aloha de Russ (KH6JRM).

Successful launch of ham radio satellites | Southgate Amateur Radio News


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On Thursday, February 27 at 1837 UT a cluster of Japanese amateur radio satellites were launched from the Yoshinobu Launch Complex at the Tanegashima Space Center (RT @SAR_News: Successful launch of ham radio satellites | Southgate Amateur Radio News…

Russ Roberts‘s insight:

The Tanegashima Space Center in Japan has confirmed the successful launch of several amateur radio satellites.  There have been at least two reports of good signals from the micro-satellites.  The student team that developed and built the ITF-1 CubeSats would appreciate any reports of their satellites on 437.525 MHz FM Morse Code.  Aloha de Russ (KH6JRM).

See on www.southgatearc.org

ARNewsline Report 1907 — Feb 28 2014: – eHam.net


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ARNewsline Report 1907 — Feb 28 2014:
eHam.net
An Ohio town is appealing the States PRB-1 like law into the court system. This after it lost an appeal by a ham who was given the right to put up an antenna that the municipality had denied.

Russ Roberts‘s insight:

Here’s the latest "ARNewsline Report", highlighting the struggle of an Ohio ham trying to erect an antenna on his property.  Although he got permission to build a tower, neighbors opposed to the structure have appealed Ohio’s PRB-1 like law to the legal system.  The ARRL is offering legal advice to this amateur radio operator.  The NIMBY (not in my backyard) syndrome is alive and well.  It’s time to go "stealth mode."  Aloha de Russ (KH6JRM).

See on www.eham.net

Birmingham Amateur Radio Club hosts BirmingHAMfest 2014 – Alabama’s13.com


See on Scoop.itKH6JRM’s Amateur Radio Blog

Birmingham Amateur Radio Club hosts BirmingHAMfest 2014
Alabama’s13.com
Ham radio enthusiasts will flock to the annual BirmingHAMfest is this weekend, hosted by the Birmingham Amateur Radio Club.

Russ Roberts‘s insight:

If you’re in the Birmingham, Alabama area this weekend, be sure to visit the "BirmingHam Fest" Saturday and Sunday at the Zamora Shrine Temple in Birmingham.  Doors open each day at 0900 local time.  Aloha de Russ (KH6JRM).

See on www.alabamas13.com

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