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Tuesday September 02, 2014
 

Amateur Radio Base Station Antennas

Base Station Antennas for Ham Radio

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CAUTION:
When erecting an antenna, never install near power lines, and never work alone.
SERIOUS INJURY OR DEATH CAN RESULT FROM CONTACT WITH THE RADIATING ANTENNA
and MEDIUM- OR HIGHPOWER TRANSMITTERS.  REMOVE ALL POWER FROM THE
TRANSMITTER (and turn it OFF), WHILE MAKING ADJUSTMENTS TO THE ANTENNA.

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To: <BuxClub@BuxClub.org>
Subject: Windom and t2fd
Date: Wednesday, October 24, 2012 12:30 AM

Just a brief email to compliment and thank Buxcomm for your excellent products! 
I have both a BuxComm windom 40-2meter and 1080 T2FD I built with your 9 to 1 balun
and 450 ohm terminated resistor.
I love them both.  I just finished making about 60 or 70 contacts in the California qso party. 
Your antennas work great as advertised.  I appreciate the low prices and high quality. 
I didn’t have enough room for 80 meters hence the t2fd. 
Now I have a resonant  antenna on 80 and 15.  No tuner necessary. 
Thanks again

KG6A
Dave
 


Regardless; whether you are using an antenna with radials, or an antenna that does not use radials, there is no substitute for a GOOD, Earth Ground.  In the case  of an end fed antenna, such as a long-wire, a good 9:1 BALUN is essential.  Another example is the BUXCOMM 1KHFHV horizontal, vertical, or slope installation, a good earth ground is necessary.  Although the BUXCOMM 1KHFHV has a special type built-in antenna coupler,  a good ground should be attached to the ground terminal of the 1KHFHV antenna coupling device.

With this BUXCOMM 1KHFHV antenna, it is End-Fed  and is connected to the "HOT +" terminal of the coupling unit.  The other terminal is the ground terminal that has a bare, copper wire rope attached. This is the ground lead, and should be connected to a good earth ground, or a grounded, (metal
 "cold-water" pipe.  

The coax or feed-line is connected to the SO-239 and fed to your radio. The best place for the BALUN of any end-fed antenna is to mount it in such a manner as to keep this copper, ground lead as short as possible.

In some installations, this type install will resemble an inverted "L" antenna.  Keep the long, radiating element of the antenna as vertical as possible. The best to place the coupling transformer is with 6 or 8 feet of the ground connection, and as high up as possible, and out of reach of human or animal contact. 

With any of our BUXCOMM BALUNs or antenna coupling transformers (ACT), they are internally connected to the ground terminal, with the inductance of  the antenna coupling at ground potential.   This type antenna BALUN, UNUN, or antenna coupling transformer, performs three functions:

1)  Provides a radiation counterpoise for the hot element of the antenna. 
2)  Protects equipment, and other devices connected from harmful lightning strikes.
3)  Removes or bleeds off noise and static that may otherwise build up on the antenna.






 
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