[Mw] Re: [NLRS] Help me identify these antenna bands
Baker, Donn B
[email protected]
Wed, 3 Dec 2003 10:00:26 -0600
You're right, of course, Geoff. The GOES weather satellite transmits =
(WEFAX ?) on 1691. I think there is also an LPY available for the =
hydrogen-alpha radio astronomy frequency (1460 MHz). Never thought of =
those.
=20
73 Donn
WA2VOI/0
-----Original Message-----
From: Krauss, Geoffrey H [mailto:[email protected]]
Sent: Wednesday, December 03, 2003 9:01 AM
To: Baker, Donn B; Scott; Northern Lights Radio Socie; Microwave List
Subject: RE: [Mw] Re: [NLRS] Help me identify these antenna bands
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-----=20
From: Baker, Donn B [ mailto:[email protected]]=20
Sent: Wednesday, December 03, 2003 9:16 AM=20
To: Scott; Northern Lights Radio Socie; Microwave List=20
Subject: RE: [Mw] Re: [NLRS] Help me identify these antenna bands=20
Hi again,=20
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=20
Reflector ~4.5" ~3" ~1.75"=20
Last=20
director ~3.625" ~2.25" ~1.25"=20
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,=20
73 Donn=20
WA2VOI/0=20
>-----Original Message-----=20
>From: Donn Baker [ mailto:[email protected]]=20
>Sent: Wednesday, December 03, 2003 7:33 AM=20
>To: Scott; Northern Lights Radio Socie; Microwave List=20
>Subject: [Mw] Re: [NLRS] Help me identify these antenna bands=20
>=20
>=20
>'Morning Scott.=20
>The yagi looks like a Tonna (F9T ?) 1296 antenna... and appears to be=20
>missing the reflector element. A workable reflector could be made by=20
>making it 5% longer than the driven element. The difficult=20
>part is coming=20
>up with a standoff to mount it on. It won't be perfect, but=20
>the antenna=20
>will work. Treat the standoffs carefully... they were the=20
>weak point of=20
>that antenna.=20
>=20
>The loop is one element of a loop yagi... but I can't figure out what=20
>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. =20
>BUT, its NOT=20
>the driven element... if its the reflector, its 5% too big,=20
>which brings it=20
>up to maybe 1600 MHz; If its a director (the last one ?) the=20
>its maybe 7%=20
>too small, and in that case it should be around 1450 MHz. =20
>Bottom line...=20
>don't know. The antenna can be swept, and resonance=20
>determined from that.=20
>=20
>Good luck=20
>73 Donn=20
>WA2VOI/0=20
>=20
>At 12:05 03-12-03 -0000, Scott wrote:=20
>>Got 2 antennas thrown in with a recent purchase. I need help=20
>to positively=20
>>identify these antennas. I believe maybe 1296 and 2304? Go=20
>to my website=20
>>at http://corbenflyer.tripod.com and take the menu link to=20
>"My Ham Radio=20
>>Page (N0EDV). Below the pictures of the antennas is a link=20
>to send me email=20
>>(makes it very easy to reply!)=20
>>=20
>>Thanks!!=20
>>=20
>>Scott N0EDV=20
>>Gotta Fly or Gonna Die=20
>> http://corbenflyer.tripod.com=20
>>Building RV-4=20
>>=20
>>=20
>>_______________________________________________=20
>>NLRS mailing list=20
>>[email protected]=20
>> http://mailman.qth.net/mailman/listinfo/nlrs=20
>>=20
>>=20
>=20
>_______________________________________________=20
>Microwave mailing list=20
>[email protected]=20
> http://mbs.valinet.com/mailman/listinfo/microwave=20
>=20
_______________________________________________=20
Microwave mailing list=20
[email protected]=20
http://mbs.valinet.com/mailman/listinfo/microwave=20
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