[Mw] Re: [NLRS] Help me identify these antenna bands

Wed, 3 Dec 2003 10:00:37 -0500

Need not necessarily be a ham band; loopers were/are, I believe, also made
for bands inbetween 1296 and 2304 (e.g. 1691 MHz. which would about right
for a 2.5" element).

-----Original Message-----
From: Baker, Donn B [mailto:[email protected]]
Sent: Wednesday, December 03, 2003 9:16 AM
To: Scott; Northern Lights Radio Socie; Microwave List
Subject: RE: [Mw] Re: [NLRS] Help me identify these antenna bands

Hi again,
On my way out of the house, I went down an measured the loops on my Rover
LPYs: (wasn't dressed to go outside when I did my earlier post).
           902/903   1296    2304
Reflector  ~4.5"     ~3"    ~1.75"
Last 
director   ~3.625"  ~2.25"  ~1.25"

Yours measures ~2.5", so I'd guess its a 1296 antenna.  Its would also be
shorter than the ones I have (33 elelement): if its the last director, its
larger in diameter, hence fewer elements.

Again,
73 Donn
WA2VOI/0

>-----Original Message-----
>From: Donn Baker [mailto:[email protected]]
>Sent: Wednesday, December 03, 2003 7:33 AM
>To: Scott; Northern Lights Radio Socie; Microwave List
>Subject: [Mw] Re: [NLRS] Help me identify these antenna bands
>
>
>'Morning Scott.
>The yagi looks like a Tonna (F9T ?) 1296 antenna... and appears to be
>missing the reflector element.  A workable reflector could be made by
>making it 5% longer than the driven element.  The difficult 
>part is coming
>up with a standoff to mount it on.  It won't be perfect, but 
>the antenna
>will work.  Treat the standoffs carefully... they were the 
>weak point of
>that antenna.
>
>The loop is one element of a loop yagi... but I can't figure out what
>frequency its for.  The loopers are 1-lamda loops (driven element), and
>that measures about 7.8" for the one in the picture.  THAT doesn't fall
>anywhere near a ham band... I make it to be about 1500 MHz.  
>BUT, its NOT
>the driven element... if its the reflector, its 5% too big, 
>which brings it
>up to maybe 1600 MHz; If its a director (the last one ?) the 
>its maybe 7%
>too small, and in that case it should be around 1450 MHz.  
>Bottom line...
>don't know.  The antenna can be swept, and resonance 
>determined from that.
>
>Good luck
>73 Donn
>WA2VOI/0
>
>At 12:05 03-12-03 -0000, Scott wrote:
>>Got 2 antennas thrown in with a recent purchase.  I need help 
>to positively
>>identify these antennas.  I believe maybe 1296 and 2304?  Go 
>to my website
>>at http://corbenflyer.tripod.com and take the menu link to 
>"My Ham Radio
>>Page (N0EDV).  Below the pictures of the antennas is a link 
>to send me email
>>(makes it very easy to reply!)
>>
>>Thanks!!
>>
>>Scott N0EDV
>>Gotta Fly or Gonna Die
>>http://corbenflyer.tripod.com
>>Building RV-4
>>
>>
>>_______________________________________________
>>NLRS mailing list
>>[email protected]
>>http://mailman.qth.net/mailman/listinfo/nlrs
>>
>>
>
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