Awesome :) In our experience here where we own both the amateur and wireless network equipment. The best luck we've had was to use two separate metal enclosures, one for the ham, one for the network gear and ensure everything is bonded together. Initially we had issues as well with ethernet ports throwing spurs in the VHF band. All of the CAT5 was swapped to shielded CAT5 and the entire networking radio was encased in a metal subenclosure with the drain wire connected at the entry point. Knocked out all of the interference we were dealing with. Also, removed all of our spans of LMR400 going up the tower and replaced with Andrew LDF4 for the ham antenna; LMR400 has no business in duplex operation used with ham repeaters. Oh well, hard lesson learned about a decade ago.
444.750+ /147.080+ PL100.0 if you're in the Boise, Idaho area... On Tue, Oct 27, 2009 at 11:55 AM, Mike <m...@aweiowa.com> wrote: > Yes the split is 5, my fingers typed 6. The repeater frequency is > 444.000 with a standard 5 MHz offset to 449.000. The tone will be > 114.8. So, if you are ever driving down Hwy 30 between Cedar Rapids > and Marshalltown, you are welcome to use it; it is an open repeater. > > > > At 12:42 PM 10/27/2009, you wrote: > >Depends on the band... For UHF 440 MHz, the split is usually 5 MHz (same > as > >LMR in the UHF band). For VHF 144 MHz, the split in the US is 600 KHz > (0.600 > >MHz). > > > >Typical voice channel bandwidth is under 20 KHz for wideband and less than > >12.5 KHz for narrowband operation... A far cry from the 5 and 10 MHz > >channels of 802.11x operation :) > > > >On Tue, Oct 27, 2009 at 11:39 AM, Mike <m...@aweiowa.com> wrote: > > > > > 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. 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