Yuri,
Here is some information that you may consider , that may help if you do not
have GDO.
Provide that you have the other equipment IE. Signal Generator and Meter for
detector.
Also look for subject in the Tower Talk archives.
73 Ken
http://www.vk4adc.com/web/index.php/hf-projects/46-antenna-traps/105-
tuning-hf-coax-traps.html
VK4ADC's Web - Tuning HF Coaxial Antenna Traps
www.vk4adc.com/web/index.php/hf-projects/46-antenna-traps/105...
... (grid dip oscillator, ... (an analogue meter is preferred
though). ... I set the sig gen to the wanted frequency ( eg 28.300,
...
http://www.marcspages.co.uk/tech/2104.htm
Marc's Technical Pages: Tuning Antenna Traps Without a GDO
attachments
PacketRadio is Still
Alive.......Mississippi.......145.010.......Simplex.......1200 baud Baud
----- Original Message -----
From: Yuri <ve3dz@rigexpert.net>
To: towertalk@contesting.com
Cc:
Sent: Wednesday, July 17, 2013 11:59 AM
Subject: [TowerTalk] Indentifying A4S traps
I have an old A4S w/40m add-on sitting in my storage for years.
Unfortunately the elements are not marked, and I need a way to identify the
traps.
I heard about technique of connecting the Grid Dip Meter to the end of the
traps, but I don't have Dip Meter at the moment.
Is there any other way to do that?
I see that Driven Element and Director both have a pair of traps on each side
(and they are a bit different in length), while reflector has only one on each
side. Are the traps on the director and driven element the same
(interchangeable)? In the manual they marked TC/TD and TB/TE.
Thanks for any tip.
Yuri VE3DZ
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