[600MRG] NBS Reference -

[Pat Hamel]

Frank

Go to www.500kc.com <http://www.500kc.com/> 

Under Quick links 

go to the blue "File downloads"

Under that scroll to "technical files"

Then find 

Click HERE
<http://w5jgv.com/downloads/1937%20NBS%20Circular%20C74%20%28partial%29.pdf>
to download a partial scan of the 1937 National Bureau of Standards Circular
C74. This PDF file contains information for calculation and design of
capacitors and conductors, RF resistance of wires and coils, and
miscellaneous formulas and data. File size = 48.2 MB 

I hope it helps someone.

73,

Pat

 

  _____  

From: Frank Lotito [mailto:k3dz at live.com] 
Sent: Saturday, September 19, 2015 12:44 PM
To: Pat Hamel
Subject: NBS Reference - 

 

Pat - You said the following in your 9/19/2015 e-mail which as posted on the
600mrg reflector regarding impedance at the end of a wire, etc:

 

The formulas for flat spiral coils are in the NBS book extract I put on the
web site in the bottom of the downloads.

 

 

If you don't mind - I sorta lost track of "who's on first."  Please send me,
better yet, post that URL / reference for the flat spiral coils in an e-mail
to the 600mrg reflector.

 

Thank you - 

 

73 Frank K3DZ / WH2XHA