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Ron RackleyRon Rackley was a guru of broadcast antenna design. I met him at the site of WADO when it was being upgraded
from 5KW to 50KW. We met for lunch at a nearby restaurant and spent all afternoon talking about the theory of Electromagnetic
Radiation. Ron taught me about displacement current and got me started on my journey to learn Maxwell's equations
and how radiation works and, eventually how electrical energy REALLY propagates along a wire. I continue my studies
of this from various books and lectures given by MIT and Yale University professors.
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W8MCY SK - Emil Rudat, ORMOND BEACH, FL
In Memorium Emil Passes away on November 28, 2013 at the age of 94.
Obituary
Click on Photo for Enlargement |
Emil Rudat was my first mentor in electronics when I was 15. When I built the Knightkit "Spanmaster"
it did not work at first. Emil lived down the street from me in River Edge, NJ back in the 50s and early 60s with
his wife and two children. He found the mistake to get my first kit working and helped me with some other early
electronic projects. He played a very important role in my career in technology. I am very grateful to him! I also thank Emil's wife, Dottie, for her love and devotion for her family. |
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From Emil's Collection
Emil found these tubes at the RCA Harrison facility in 1940 while cleaning out the lab of Dr. Vladimir Zworykin.
(Zworykin pioneered the development and improvement of the television camera tube and patented the Iconoscope.)
The outer tubes are triodes labeled as follows: "DeForest Audion U.S. Patent NOS 841387-879532 SOLD ONLY FOR
AMATEUR AND EXPERIMENTAL USE." Because the tubes had no cathode sleeves, DC was used for a filament source
to prevent the introduction of AC hum. The amplification level was actually controlled by varying the filament
voltage, hence, it's temperature and abiility to emit electrons. The leftmost tube is marked 1465 and the rightmost
is marked 1295 on the glass envelope. The center tube is marked "McCOLLOUGH Type 401 A-C TUBE." The two pins at the top of the tube are the filament connection. The thumbscrews were actually part of slide-off clamps on the top pins for convenient replacement. Emil told me that it was the first tube type with a cathode sleeve and therefore could use AC supplied to the filament. Because of the long thermal time constant of the sleeve, the temperature could not vary much due to the alternating filament which heated it from inside. This is analogous to the smoothing action of a filter capacitor which has a voltage time constant. |
K2GHV SK - Robert Greenquist
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Chuck (Howard) Menthe - WA2QHG was one of my classmates in HS back in 1961-62. Chuck was the first ham I saw in action on CW. His rig consisted of a Viking Challenger, Hallicrafters S-38E and a vertical. He used an old bug. When I saw him talking to other hams in Morse Code, I was impressed. It really got me interested in learning the code. Whenever Chuck and I saw each other in school we would make verbal Morse code exchanges. Chuck is now living in Florida with callsign K4QHG. |
Peter Riker - WA2HLN gave me my novice test. He is now K4BKD
in Marietta, GA and can be heard often on 40 meter SSB. Both Pete and Chuck, being my peers in age were a motivating factor. |
Gary Kabrick (W7GMK) rebuilt a 1 KW Bauer AM broadcast transmitter to run on 160, 80 and 40 meters. He runs it in "cut-back mode" to keep it under the legal limit. This transmitter uses a pair of 4-400's modulated by another pair of 4-400's. I was particularly interested in putting up this picture of Gary and his rig because one of my own dreams is to purchase a used broadcast transmitter and do the same, so he sent me this photo at my request. He is chief engineer at a local television station. | |
See more of Gary's rig and hamshack at his homepage: |