Yep...protect your fade margin Jaime Solorza On Apr 8, 2015 7:56 PM, "Mike Hammett" <[email protected]> wrote:
> Every db counts... > > > > ----- > Mike Hammett > Intelligent Computing Solutions > http://www.ics-il.com > > <https://www.facebook.com/ICSIL> > <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> > <https://www.linkedin.com/company/intelligent-computing-solutions> > <https://twitter.com/ICSIL> > > ------------------------------ > *From: *"Josh Luthman" <[email protected]> > *To: *[email protected] > *Sent: *Tuesday, April 7, 2015 1:20:03 PM > *Subject: *Re: [AFMUG] Quick antenna question > > 6db??? Omg!!! Use the 400! > > Josh Luthman > Office: 937-552-2340 > Direct: 937-552-2343 > 1100 Wayne St > Suite 1337 > Troy, OH 45373 > On Apr 7, 2015 2:18 PM, "Mathew Howard" <[email protected]> wrote: > >> It looks like there'd be about 6db of loss on 20' of LMR195 vs. 2.2db on >> LMR400... that's actually not as bad as I thought. Personally, I'd go with >> at least LMR240 for that long of a run. >> >> On Tue, Apr 7, 2015 at 1:06 PM, Josh Luthman <[email protected] >> > wrote: >> >>> For the AN50s I always did LMR400 because that's what was there. It was >>> never more than 3 meters (9 feet). >>> >>> For every other radio it's generally what's included. The biggest I can >>> think of is the brand we can't say here - might be heavy duty LMR195, >>> though. >>> >>> >>> Josh Luthman >>> Office: 937-552-2340 >>> Direct: 937-552-2343 >>> 1100 Wayne St >>> Suite 1337 >>> Troy, OH 45373 >>> >>> On Tue, Apr 7, 2015 at 2:01 PM, Glen Waldrop <[email protected]> >>> wrote: >>> >>>> I might do that. >>>> >>>> Is that what you use for less than 20ft? >>>> >>>> LMR400 has less loss, but I think at that length all the loss is going >>>> to be the connectors anyway. >>>> >>>> 400 is a bit stiff. >>>> >>>> >>>> >>>> ----- Original Message ----- >>>> *From:* Josh Luthman <[email protected]> >>>> *To:* [email protected] >>>> *Sent:* Tuesday, April 07, 2015 12:58 PM >>>> *Subject:* Re: [AFMUG] Quick antenna question >>>> >>>> For <20 feet you could just use 195, I don't think you get any much >>>> difference at 5 GHz. >>>> >>>> >>>> Josh Luthman >>>> Office: 937-552-2340 >>>> Direct: 937-552-2343 >>>> 1100 Wayne St >>>> Suite 1337 >>>> Troy, OH 45373 >>>> >>>> On Tue, Apr 7, 2015 at 1:56 PM, Glen Waldrop <[email protected]> >>>> wrote: >>>> >>>>> We seal ours as well. >>>>> >>>>> I recrimped most of the premade cables I purchased after I got a batch >>>>> where the ends just came off. Assemble the equipment on the ground for >>>>> testing, go to line the antenna up for a test shot, notice no signal, the >>>>> coax is laying on the ground. >>>>> >>>>> I didn't take the end off, just hit it again with the crimpers from >>>>> each direction. >>>>> >>>>> That has made me a bit gun shy about LMR400, especially after it >>>>> happened on a tower. >>>>> >>>>> >>>>> >>>>> ----- Original Message ----- >>>>> *From:* Josh Luthman <[email protected]> >>>>> *To:* [email protected] >>>>> *Sent:* Tuesday, April 07, 2015 12:49 PM >>>>> *Subject:* Re: [AFMUG] Quick antenna question >>>>> >>>>> Nearly all of my coax is preterminated. It's all a) Streakwave or b) >>>>> included with the antenna. I can't recall if we've ever had a problem >>>>> with >>>>> any of it, but we always use coax seal. >>>>> >>>>> >>>>> Josh Luthman >>>>> Office: 937-552-2340 >>>>> Direct: 937-552-2343 >>>>> 1100 Wayne St >>>>> Suite 1337 >>>>> Troy, OH 45373 >>>>> >>>>> On Tue, Apr 7, 2015 at 1:34 PM, Glen Waldrop <[email protected]> >>>>> wrote: >>>>> >>>>>> 15dBi omni and ~15 to 20ft LMR400. >>>>>> >>>>>> Lightning blew the door off the power box on the ground, fried the >>>>>> mini PCI cards, but the RB600 still worked, just no data across the >>>>>> ethernet port. >>>>>> >>>>>> The unit was hit in 09, was replaced and the antenna and coax have >>>>>> been in service the whole time. I never replaced it as I thought the >>>>>> hinky >>>>>> rx signal was just misreported, a 24Mbps link @ -88 shouldn't happen. Rx >>>>>> signal quality has finally gone down to match the actual numbers now, so >>>>>> I >>>>>> think something in the antenna was damaged. >>>>>> >>>>>> The problem I have here is quality cables. I've gone through around >>>>>> 50 that were replaced by Streakwave. They had a bad batch. Made me quite >>>>>> shy to replace what appears to be a good cable with one that might just >>>>>> quit like some others have. >>>>>> >>>>>> I made this one in late 08. >>>>>> >>>>>> >>>>>> >>>>>> ----- Original Message ----- >>>>>> *From:* Jaime Solorza <[email protected]> >>>>>> *To:* Animal Farm <[email protected]> >>>>>> *Sent:* Tuesday, April 07, 2015 12:12 PM >>>>>> *Subject:* Re: [AFMUG] Quick antenna question >>>>>> >>>>>> more info ...what kind of antenna? how much RF cable and what kind >>>>>> is it? what do connectors look like ? >>>>>> >>>>>> Jaime Solorza >>>>>> Wireless Systems Architect >>>>>> 915-861-1390 >>>>>> >>>>>> On Tue, Apr 7, 2015 at 11:09 AM, Glen Waldrop <[email protected] >>>>>> > wrote: >>>>>> >>>>>>> I had a tower hit by lightning. The antenna appeared to survive, >>>>>>> so I replaced electronics and let it go. >>>>>>> >>>>>>> The system reports low rx signal, 20dB worse than expected, but got >>>>>>> the speeds I expected, so originally I thought the signal was just being >>>>>>> misreported by the new equipment. It has degraded now, so we're working >>>>>>> on >>>>>>> it this afternoon. >>>>>>> >>>>>>> I'm replacing the antenna, but what are the odds that the coax is >>>>>>> damaged as well? >>>>>>> >>>>>>> I've got spare, probably going to send it up with the climber anyway. >>>>>>> >>>>>> >>>>>> >>>>> >>>> >>> >> >
