[TowerTalk] FIlters

[Steve Gehring / KL7DC]

At 06:00 PM 1/27/98 EST, you wrote:
>In a message dated 98-01-27 17:29:41 EST, gdaught6@pobox2.stanford.edu
writes:
>
>> now, make *sure* it's a quarter wave long!
>
>     A splendid use for an antenna analyzer!
>
>73,  Steve  K7LXC
>

Hi,

The use of a spectrum analyzer is the best way.  But, you could also use an
Autek RF-1 or similar MFJ product to tune a stub.  Or, try a signal
generator tuned to the offending freq (band) and feed the incoming feedline
from the antenna, using a VTVM bridging across a 50 ohm resistor at the rig
end.  This way you could tune the stub for a dip or minimum voltage level
at the freq (band) you're trying to eliminate.

73 de Steve



--
FAQ on WWW:               http://www.contesting.com/towertalkfaq.html
Submissions:              towertalk@contesting.com
Administrative requests:  towertalk-REQUEST@contesting.com
Problems:                 owner-towertalk@contesting.com
Search:                   http://www.contesting.com/km9p/search