Josh:

Amateur operators, besides talking world wide on HF frequencies, have 
primary allocations in various slots in the spectrum.  Besides 440 
(UHF) there is 144 MHz (2 meter VHF), and 220 MHz (VHF).  2 meter and 
70 cm repeaters are common in the ham world.  What happens is an 
operator is able to talk to the repeater on the input frequency, and 
the equipment transmits on another frequency.  So, low powered hand 
held devices (or mobile devices) can talk a great distance with low 
power, THROUGH the repeater instead of station-to-station, which 
would be simplex.  The repeater equipment we are using has a built-in 
cavity so the same coax and antenna can be used for transmit and 
receive at the same time.  There is a 6MHz separation between 
transmit and receive frequencies.

Mike

At 12:29 PM 10/27/2009, you wrote:
>Can you please explain "2 meter ham gear"?
>
>Josh Luthman
>Office: 937-552-2340
>Direct: 937-552-2343
>1100 Wayne St
>Suite 1337
>Troy, OH 45373
>
>"When you have eliminated the impossible, that which remains, however
>improbable, must be the truth."
>--- Sir Arthur Conan Doyle
>
>
>On Tue, Oct 27, 2009 at 10:37 AM, Kurt Fankhauser <k...@wavelinc.com> wrote:
>
> > In my experiences with 2 meter ham gear that is around Ethernet there is a
> > lot of interference from the Ethernet to the ham guys stuff. I've never
> > seen
> > the ham guys cause interference though to any wifi gear.
> >
> > Ham guys are a whole different breed of folk and depending on how these
> > ones
> > your talking to are they may be an invaluable asset to you or they may be
> > your worst nightmare. The ones around my area are the later and anyone that
> > gets involved with them end up regretting it later down the road.
> >
> > Just my 2 cents,
> >
> > Kurt Fankhauser
> > WAVELINC
> > P.O. Box 126
> > Bucyrus, OH 44820
> > 419-562-6405
> > www.wavelinc.com
> >
> >
> > -----Original Message-----
> > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On
> > Behalf Of Mike
> > Sent: Tuesday, October 27, 2009 9:17 AM
> > To: WISPA General List
> > Subject: [WISPA] Amateur repeater on a wisp tower -- gotchas?
> >
> > Wispers:
> >
> > I have a 180' tower sitting high on a hill above the county seat.  It
> > has a mix of 5.8 and 2.4 radios and sectors/dishes.  We want to
> > install an amateur repeater on the tower, initially at 70 cm (440MHz
> > UHF), and eventually a 2 m (144MHz VHF) radio.  The dual band antenna
> > feed point will be at 120'.  It is 17' long.  There is no microwave
> > equipment below 160'.
> >
> > I don't think there will be any issues with interference either way,
> > but thought I'd tap into the wealth of knowledge here to see if any
> > of you has any experience doing anything like this on your towers.
> >
> > Is there any mixing at uhf (or VHF) going on in the microwave radio
> > cards?  I can't find specs that even speak of intermediate
> > frequencies.  Gotchas?  Hints?  Comments?
> >
> > Thanks!
> >
> > Mike G
> >
> > At 06:38 PM 10/26/2009, you wrote:
> > >My 24 hours is expiring and I don't want to pull this unit down.
> > >Mikrotik's site wants me to authorize my credit card, a process I've
> > >begun but my credit card company won't post the transaction for a few
> > >days. Can anyone sell me a level 4 license for an x86 machine now?
> > >
> > >Thanks!
> > >Greg
> > >
> > >
> >
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