[TowerTalk] Indentifying A4S traps

[Ken Burchfield]

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 at rigexpert.net>
To: towertalk at 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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