Is using fiber-optic cable out of the question?

Greg

On Jan 9, 2009, at 11:28 AM, Marlon K. Schafer wrote:

> Thanks Mike,
>
> The change to 10 meg half doesn't help.  In fact, most devices won't  
> connect
> at all then.
>
> The worst part is that the most expensive gear is most effected by  
> this!  ug
>
> I have installed ferrite beads that do indeed help.  Apryl can get  
> you the
> contact info and part number.  509.982.2181
>
> The shielded cable from Shierene just came in.  And I have  
> permission to
> move to the other side of the building.  When the snow melts and the  
> ground
> firms up I'll rebuild the entire site.  The radio station has a new
> transmitter since I first went into the site and another tenant  
> recently
> left.  I have more location options now than I did before.
>
> Yesterday I did some testing with a Fluke DTX.  It's a crazy meter.   
> Checks
> just about everything.  As it well should for $7000.  Know what it  
> doesn't
> check very well though?  Inductive RF.  grrrrr  There is one test that
> showed some problems though.  It's called an inductive pulse.   
> Readings at
> another tower I have (and the tech support guy at Fluke) were 0.   
> This tower
> had a reading of nearly 3000!!!!!  Fluke is supposed to find out  
> what an
> acceptable level would be and send that info to me.  I've not heard  
> from
> them yet though.  The tech's guess was around 30mV.
>
> I did think it strange that when I tested my cable with a volt meter  
> (one
> end to ground, the other to the connectors on the cat5) I was  
> picking up 2
> to 3 volts on each pin.  That pretty well seems to line up with the  
> 3000mV
> reading from the fluke!
>
> This site has always been a source of grief for me.  Must less  
> reliable than
> nearly any other I have, no matter what equipment is used.  I always  
> thought
> it was due to all of the other operators in the area (one's been  
> fined by
> the FCC for using illegal amps etc.) doing silly things.  Though  
> nothing
> THAT bad has ever showed up on my analyzer.  I always thought it was
> something that only the customer end could see (couldn't find that  
> on the
> analyzer either though).  Maybe my problem has always been the radio  
> station
> stuff.  Wouldn't that be great?  FINALLY, a network reliable enough  
> to allow
> me to take a vacation.  grin
>
> laters,
> marlon
>
> ----- Original Message -----
> From: "Mike Cowan" <ispwireless-li...@wirelessconnections.net>
> To: <isp-wirel...@isp-wireless.com>
> Sent: Friday, January 09, 2009 1:40 AM
> Subject: RE: [isp-wireless] FM radio station site strangeness
>
>
> Hi Marlon,
>
> It looks like you are on your way to solving this.  To get by until  
> then you
> might want to try locking the Ethernet side to 10MB 1/2 duplex.  FM  
> radio
> runs around 100mhz at high power levels, well so does a 100MB Ethernet
> connection, it communicates at 10mhz.  10MB 1/2 runs at 66mhz I  
> believe.
> Fixing it is really black magic however.  Sometimes grounding helps,
> sometimes it is better without.  Many have placed the cable in  
> conduit, with
> mixed success.  I would be very interested if the ferits help, we  
> have tried
> a few with inconclusive results, but have not found a quality unit  
> to test
> with either.
>
> Mike
>
> Mike Cowan
> Wireless Connections
> A Division of ACC
> 166 Milan Ave
> Norwalk, OH 44857
> 419-660-6100
> 419-706-7348 Cell
> 419-668-4077 Fax
> mi...@wirelessconnections.net
> www.wirelessconnections.net
>
> -----Original Message-----
> From: Marlon K. Schafer [mailto:o...@odessaoffice.com]
> Sent: Wednesday, January 07, 2009 10:47 AM
> To: isp-wirel...@isp-wireless.com
> Cc: isp-wirel...@isp-wireless.com
> Subject: [isp-wireless] FM radio station site strangeness
>
> Hi All,
>
> I think we finally have this all figured out.  Now I just have to  
> figure out
>
> how to fix it.
>
>
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