[Elecraft] New Guy

Sun Jul 6 15:46:59 2003

Bayonet Neill Concelman but it also is called by a few other names...such
as:  Bayonet Nut Connector and British Naval Connector.
Now on to WD40.  WD40 was developed for the precurser of NASA..the USAF
Rocket Division and it stands for Water Displacement Formula #40.  The
manufacturer as you can see took 40 tries to get it right.  It was designed
to remove Dew and Water from Rockets so they didn't freeze and get an ice
coating.

Gregg R. Lengling, W9DHI, Retired
K2/100 SN 3075
http://www.milwaukeehdtv.org

----- Original Message ----- 
From: "William M. Spaulding, Sr." <[email protected]>
To: "Elecraft Reflector" <[email protected]>
Sent: Sunday, July 06, 2003 2:23 PM
Subject: [Elecraft] New Guy

Hi,

I'm Bill Spaulding, NA7Y, located near Spokane, WA.  I am building a K2 with
several options (including QRO - shame), and am almost done with the RF
board.  There has been a LOT of work and even more frustration at times, but
the reward of powering up this little radio and having it work 100% is
extremely satisfying.  The whole thing fits together like a glove - amazing
product design.  I doubt if these could be built on an assembly line even in
China!

I think it's because most of us are fundamentally CW jocks that elevates the
level of humor in these notes.  CW guys are a creative lot in my experience.

I am moved to add WD40 as an important additive for antenna performance.
WD40 has well-known water repellant qualities.  It is made of the ethers in
the first place, and, therefore, helps provide a match from the antenna to
the ethers and beyond.............

I have also never seen any iron oxide on an aluminum vertical, for example,
after having sprayed with WD40 - unless, of course, iron hardware was used.
These magical characteristics of WD40 are limitless.

Now, to some serious stuff.  I like to sweep my filters with a network
analyzer to optimize their performance.  When doing so, it's always nice to
pay as much attention to the stop band characteristics of the stop band in
addition to the inband transmission performance.

So, does anyone know, or have access to, the design center values for the
transmission zeroes for the filters on the RF board.  It would be a big help
to me to have these data while tweaking up this neat little machine!

War story:  After tweaking up the 40 Meter input filter, I got curious, and
attached a very short wire to the center of the antenna BNC.  I heard a "8N"
(Japan?) prefix handing out signal reports on 7.0018 (roughly) MHz.  That
blew my socks off. It fired me up to keep plowing through the rest of the
work and frustrations.

Then there are all the options after that............

QUIZ:  What does BNC stand for?

Thanks to all.  I look forward to working with this group..

73

Bill
NA7Y

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