[HamWAN PSDR] PSDR Digest, Vol 28, Issue 6

Marc Lacy kd7ryy at msn.com
Mon Mar 9 09:55:40 PDT 2015


Are these mods posted somewhere?

73 marc kd7ryy

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Subject: PSDR Digest, Vol 28, Issue 6

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Today's Topics:

   1. Re: VOTE: 900MHz service experiment (Bryan Fields)


Message: 1
Date: Fri, 06 Mar 2015 15:45:32 -0500
From: Bryan Fields <Bryan at bryanfields.net>
To: Bart Kus <me at bartk.us>, Puget Sound Data Ring <psdr at hamwan.org>
Subject: Re: [HamWAN PSDR] VOTE: 900MHz service experiment
Message-ID: <54FA11EC.8080905 at bryanfields.net>
Content-Type: text/plain; charset="utf-8"

On 3/6/15 2:05 PM, Bryan Fields wrote:
> Bart, they are only viable as second hand items. It was the first gen 
> wisp gear circa 2002, And they can't give the away on eBay. 2mhz 
> channel and gfsk modulation, about 1.6 mbit/s. Gfsk can use a class c amp too....

They are all over, ebay has them for 15 dollars.


These can be converted to AU's (AP's) with a simple jumper mod, and even set to 1mhz bandwidth too if need be.  They put out 27 dBm which is quite good for
900 mhz.  With a small outdoor box you have a nice mast mount AP.

I've attached a system manual on them if you're interested.

> I can see if I have a contact for OAL when i get home. I can't stress 
> enough how H pol will make a difference for you, or at least did for me.


I was paying $500 for the commercial version of this, it was about 10dbi at 900mhz.  They came in a 4' long 12" PVC pipe radome that accepted a 1.5" pipe at the end.

Couple this with a M2 17dbi client antenna and you get some nice range.
Bryan Fields

727-409-1194 - Voice
727-214-2508 - Fax
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