[Antennas] Help needed to identify 3 element HF yagi

Tue Aug 9 08:27:27 EDT 2011

Ed,
Not having the assembly manual for that beam may result in incorrect assembly and less than optimum results. Your photos are not clear. I do see some traps. They all may be working or some may be defective. If all assembled correctly, all alum. tubes set at correct lengths, all traps are operational and it is mounted at least 1/2 wave high over ground on the lowest band, you should get around 5 to 6 dbD fwd gain
Jay....NE2Q
----- Original Message -----
From: Ed 
Date: Tuesday, August 9, 2011 7:52 am
Subject: Re: [Antennas] Help needed to identify 3 element HF yagi
To: Peter Fraser 
Cc: Antennas at mailman.qth.net
> On 08/09/2011 07:22 AM, Peter Fraser wrote:
> > A couple of months ago we put a 3 element Yagi antenna on the 
> VK3SCG tower
> > at Gilwell Park but I'm trying to find some info about the antenna.
> >
> >
> > I've posted three photos to my blog in the hope that somebody might
> > recognise the design.
> >
> > At best guess the boom is about 4 m (13 feet) long.
> >
> > Along the boom toward the director is a parallel tuning 
> arrangement made of
> > two aluminium tubes about 8 (3/8") mm in diameter and about 
> 40mm (1 1/2 ")
> > apart.
> >
> >
> > I'd really like to know what model and maker this antenna is 
> and some idea
> > of the gain.
> >
> > Photos are at http://vk3zpf.blogspot.com/
> >
> > Thanks
> >
> > Peter VK3ZPF
>> I would say its a HY-GAIN TH-3 now owned by MFJ.
>> Ed W3NR
>>>>>>>>> ______________________________________________________________
> Antennas mailing list
> Home: http://mailman.qth.net/mailman/listinfo/antennas
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Antennas at mailman.qth.net
>> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>