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. >>>>>> >>>>> >>>>> >>>> >>> >> >
