+1
Inquiring minds.
bp
<part15sbs{at}gmail{dot}com>
On 11/7/2016 8:47 PM, Sean Heskett wrote:
If you are in a congested RF environment why on earth would you waste
the spectrum on a B11? It only does 256QAM
On Mon, Nov 7, 2016 at 6:42 PM Mike Hammett <[email protected]
<mailto:[email protected]>> wrote:
*nods* I asked about going from a 3' to a 6' SHP dish, no go.
That said, I've got a couple paths in HFT central where I can
still do B11s. :-)
-----
Mike Hammett
Intelligent Computing Solutions <http://www.ics-il.com/>
<https://www.facebook.com/ICSIL><https://plus.google.com/+IntelligentComputingSolutionsDeKalb><https://www.linkedin.com/company/intelligent-computing-solutions><https://twitter.com/ICSIL>
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<https://www.facebook.com/mdwestix><https://www.linkedin.com/company/midwest-internet-exchange><https://twitter.com/mdwestix>
The Brothers WISP <http://www.thebrotherswisp.com/>
<https://www.facebook.com/thebrotherswisp>
<https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg>
------------------------------------------------------------------------
*From: *"George Skorup" <[email protected] <mailto:[email protected]>>
*To: *[email protected] <mailto:[email protected]>
*Sent: *Monday, November 7, 2016 7:39:31 PM
*Subject: *Re: [AFMUG] Class A and B antennas
My finger clicked send before my brain.
Interestingly, a RadioWaves HP2-11 has 60dB f/b ratio and is a Cat
B. While a HP3-11 has 62dB f/b and is Cat A. The VHLP800-11 has
59dB f/b and is Cat A while being only 3" smaller in actual
diameter vs the HP3-11 (35.5" for a "2.5" foot antenna, vs a 38.4"
3 foot). But a bit weaker f/b ratio than a HP2. Both are shrouded.
I don't get it. I think there may be something else like main lobe
beamwidth, too.
The problem with all this Cat A vs B stuff is it really doesn't
matter anymore in congested areas. I had Liz look for a 56MHz
channel on a path. She said nope. I said, OK, what about changing
the 2' end to a 3'. She still said nope. Polarity, antenna size,
etc., nothing mattered. Out of channels is out of channels. Good
luck with those funky B11's.
On 11/7/2016 7:09 PM, Mike Hammett wrote:
Yes. Not a size requirement, just a suppression requirement.
It's just what size of antennas normally meet those requirements.
-----
Mike Hammett
Intelligent Computing Solutions <http://www.ics-il.com/>
<https://www.facebook.com/ICSIL><https://plus.google.com/+IntelligentComputingSolutionsDeKalb><https://www.linkedin.com/company/intelligent-computing-solutions><https://twitter.com/ICSIL>
Midwest Internet Exchange <http://www.midwest-ix.com/>
<https://www.facebook.com/mdwestix><https://www.linkedin.com/company/midwest-internet-exchange><https://twitter.com/mdwestix>
The Brothers WISP <http://www.thebrotherswisp.com/>
<https://www.facebook.com/thebrotherswisp>
<https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg>
------------------------------------------------------------------------
*From: *"George Skorup" <[email protected]>
<mailto:[email protected]>
*To: *[email protected] <mailto:[email protected]>
*Sent: *Monday, November 7, 2016 7:08:11 PM
*Subject: *Re: [AFMUG] Class A and B antennas
IIRC, the classes are about front to back radio and sidelobe
suppression.
On 11/7/2016 6:45 PM, Mike Hammett wrote:
2.6' in 11 GHz. I forget who.
-----
Mike Hammett
Intelligent Computing Solutions <http://www.ics-il.com/>
<https://www.facebook.com/ICSIL><https://plus.google.com/+IntelligentComputingSolutionsDeKalb><https://www.linkedin.com/company/intelligent-computing-solutions><https://twitter.com/ICSIL>
Midwest Internet Exchange <http://www.midwest-ix.com/>
<https://www.facebook.com/mdwestix><https://www.linkedin.com/company/midwest-internet-exchange><https://twitter.com/mdwestix>
The Brothers WISP <http://www.thebrotherswisp.com/>
<https://www.facebook.com/thebrotherswisp>
<https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg>
------------------------------------------------------------------------
*From: *"SmarterBroadband" <[email protected]>
<mailto:[email protected]>
*To: *[email protected] <mailto:[email protected]>
*Sent: *Monday, November 7, 2016 6:34:03 PM
*Subject: *[AFMUG] Class A and B antennas
Does anyone make a 2 foot Class A antenna for 11 GHz? Or
is 3 foot the minimum.
Does anyone make a 1 foot Class A antenna for 18 GHz? Or
is 2 foot the minimum.
Is there a minimum distance for a 11 GHz link?
Thanks
Adam
