[NLRS] GPS and RTK

[S. Earl Jarosh]

For those that like to delve into such things (Glen and Doug might find this
interesting), go to 
http://gpspp.sakura.ne.jp/rtklib/rtklib_beagleboard.htm

http://makezine.com/2009/11/12/diy-real-time-kinematic-gps/

S. Earl Jarosh, N0HZ
Cell:  612.868.1313
Off:   763.545.3275
Home:  763.546.7897
Fax:   763.546.7897
earl at jarosh.org

  


-----Original Message-----
From: NLRS [mailto:nlrs-bounces at mailman.qth.net] On Behalf Of Donn, WA2VOI
Sent: Thursday, June 12, 2014 11:01 PM
To: Arliss; nlrs at mailman.qth.net
Subject: Re: [NLRS] GPS and RTK



Before making any decision, I suggest you need more information as to
exactly which RTK systems they are planning on using.  Are they looking at
using your tower to improve the range of an unlicensed (i.e., 869/900MHz,
1/0.5w
transmitter) or a licensed 460MHz business-band system (20 W or more) ?  How
much operating do you do/expect to do on 432MHz ?  432 EME ?  440 MHz FM ?
If a lot, maybe you should politely refuse.  (Especially for EME !)  On
902/903, again, you might need a bit more information.  Where in the band,
exactly, is the TX operating.  Far enough away that a filter will solve the
possible overload problem.

Also, what is the time usage of the system ?  I'm guessing that its use is
for field work; does that mean or imply spring (planting) daytime hours,
mid-season (weed control) daytime, and fall harvest time.  Can it be turned
off when "not in use ?"  If so, who controls the on-off ?

Will the good will generated by the useage of you tower be worth whatever
"problems" they system will cause ?  Or, put another way, will the ill-will
cause by saying NO without really good reasons be worth the enhanced
operating conditions ?

Either way, good luck !

73 Donn
WA2VOI/0

----- Original Message -----
From: "Arliss" <w7xu at w7xu.com>
To: <nlrs at mailman.qth.net>
Sent: Friday, June 13, 2014 3:10 AM
Subject: [NLRS] GPS and RTK


>
>
> Hi,
>
> A couple of my farmer neighbors have asked me if I would allow placement
of an 
> RTK transmitter on one of my towers.  I'm wondering if anyone here has had
any 
> experience with this and/or has any knowledge regarding the potential for 
> interference to my ham station.  At this point, I'm not even sure what 
> frequency the RTK unit operates on.
>
> Thanks & 73,
>
> Arliss  W7XU
> ______________________________________________________________
> NLRS mailing list
> Home: http://mailman.qth.net/mailman/listinfo/nlrs
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:NLRS at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html 

______________________________________________________________
NLRS mailing list
Home: http://mailman.qth.net/mailman/listinfo/nlrs
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:NLRS at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html