Re: [TowerTalk] Indentifying A4S traps

["Yuri" <ve3dz@rigexpert.net>]

Thanks, Ken.
I'll give it a try on weekend.

Yuri

----- Original Message ----- 
From: "Ken Burchfield" <k5jxl@yahoo.com>
To: "Yuri" <ve3dz@rigexpert.net>
Cc: <towertalk@contesting.com>
Sent: 17 July, 2013 18:36
Subject: Re: [TowerTalk] Indentifying A4S traps


> 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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