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A 20-meter-long T²FD antenna, covering the 5-30 MHz band. The Tilted Terminated Folded Dipole (T²FD, T2FD, or TTFD) or Balanced Termination, Folded Dipole (BTFD) - also known as W3HH antenna - is a general-purpose shortwave antenna developed in the late 1940s by the United States Navy.
The T2FD was conceived with coax in mind from the start. At best there might have been a balun in a metal box bolted outside the superstructure, ladder on one side, coax on the other. There even are complaints voiced in the ham community in the 40's and 50s for HAVING to use low Z unbalanced on surplus mil gear while the ham tradition was open ...
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Ancient Egyptian woodworking. There is significant evidence of advanced woodworking in ancient Egypt. [1] Woodworking is depicted in many extant ancient Egyptian drawings, and a considerable amount of ancient Egyptian furniture (such as stools, chairs, tables, beds, chests) have been preserved.
Under U.S. federal law, the creation of a firearm for non-commercial purposes (i.e., personal use) has, almost without exception, been unlicensed and legal.Since the passage of the Gun Control Act of 1968, however, anyone intending to manufacture firearms for sale or distribution is required to obtain a Federal Firearms License, and each firearm made is required to bear a unique serial number.
A bike equipped with an after market electric hub motor conversion kit, with the battery pack placed on the rear carrier rack nCycle (2014) designed by Hussain Almossawi and Marin Myftiu [ 20 ] Brushless DC electric motor (BLDC) bicycle hub motor
[44] [45] The Spanish government discovered that 60,000 out of 340,000 test kits from a Chinese manufacturer produced inaccurate results. [45] The Chinese Ministry of Foreign Affairs responded that the customer should "double-check the instructions to make sure that you ordered, paid for and distributed the right ones.