That is correct. Water standing in your tower leg will end up rusting the inside of the legs but that seems to be less an issue than splitting after a freeze. The galv on a R25G type tower is not a very high quality as they are price sensitive. When exposed to harsher conditions they will rust. If you need a better, stronger tower consider the small Trylon solid rod STG or Sabre light weight tubular towers like the 1200 or 1800 TLWD.
On Mon, Jun 15, 2015 at 6:07 AM, Paul McCall <pa...@pdmnet.net> wrote: > We drill a tiny hole so water doesn’t build up in the leg. > > > > So I am clear though, you are saying the legs split when they fill up with > water AND then freeze? > > > > Paul > > > > *From:* Af [mailto:af-boun...@afmug.com] *On Behalf Of *Lewis Bergman > *Sent:* Sunday, June 14, 2015 11:32 PM > *To:* af@afmug.com > *Subject:* Re: [AFMUG] Do you want to see this stuff here? > > > > They burst just above ground or wherever the waterline is. Split is more > like it. Seen it several times. You have to make sure the legs can drain. > > On Jun 14, 2015 10:08 PM, "Paul McCall" <pa...@pdmnet.net> wrote: > > How/where do they burst apart? > > > > *From:* Af [mailto:af-boun...@afmug.com] *On Behalf Of *Colin Stanners > *Sent:* Sunday, June 14, 2015 10:49 PM > *To:* af@afmug.com > *Subject:* Re: [AFMUG] Do you want to see this stuff here? > > > > I've seen a few tube towers - including a very nice one - bursting apart > due to the customers putting the base right into concrete and not leaving a > way for the water to drip out the bottom. > > On Jun 14, 2015 9:18 PM, "Adam Moffett" <dmmoff...@gmail.com> wrote: > > This might not be a concern in Florida or Texas, but if you do it that way > in the north, the legs may burst due to filling with water and then > freezing. > > Tushar, > > > > We buy Rohn 25G, with a landed cost of about $ 130 per section. Figure $ > 80 in concrete (probably a little high) and we stick 3 ft. of the first > section in the ground. We do the first piece (dig hole, pour cement) in > about 2 hours times 2 people (on average) then come back in a day after > cement hardens and we stack the other pieces (sometimes 20 ft. at a time, > sometimes 30 feet at a time, but figure another 3 hours on site times 2 > guys. That includes bracketing to the house. However, that part is a big > variable though because of home construction. You shouldn’t just attach to > an eve without beefing the eve up. Rohn also makes various size stand offs > that can go to the side of the house. > > > > So, about 10 hours of labor on averages, and probably $ 650 to $ 750 in > materials for a tower of 37 feet. If your highest attachment point is high > enough and solid, you can stack another 10 foot section > > > > There are some variables in there, but that should give you a decent > estimate. > > > > *From:* Af [mailto:af-boun...@afmug.com <af-boun...@afmug.com>] *On > Behalf Of *Tushar Patel > *Sent:* Sunday, June 14, 2015 6:09 PM > *To:* af@afmug.com > *Subject:* Re: [AFMUG] Do you want to see this stuff here? > > > > I guess we should also look at the tower install too. What is the rough > cost to install 40 feet, Rohn 25? > > Tushar > > > > > On Jun 14, 2015, at 12:02 PM, Paul McCall <pa...@pdmnet.net> wrote: > > Its mostly financial considerations… we do whatever we can (payments, > etc.) to push them that direction. It just makes the most sense. > > > > Paul > > > > *From:* Af [mailto:af-boun...@afmug.com <af-boun...@afmug.com>] *On > Behalf Of *Ken Hohhof > *Sent:* Sunday, June 14, 2015 1:00 PM > *To:* af@afmug.com > *Subject:* Re: [AFMUG] Do you want to see this stuff here? > > > > I don’t understand why customers don’t blink an eye signing 2 year > contracts on cellphones and satellite service, but resist investing in a > Rohn tower which is an asset with about a 30 year life and also gives them > a place to mount things like an OTA TV antenna, security cameras, etc. Not > sure if they think it’s ugly, or just don’t make financial decisions for > the long term. > > > > > > *From:* Paul McCall <pa...@pdmnet.net> > > *Sent:* Sunday, June 14, 2015 11:34 AM > > *To:* af@afmug.com > > *Subject:* Re: [AFMUG] Do you want to see this stuff here? > > > > I don’t know comparatively Tushar. We have found that 50mph winds for an > afternoon is all it takes to bend them. > > > > Being on the ocean, we also see them corrode rather quickly. 2 different > brands of poles and within 2 years they are almost unusual, parts break > trying to loosen them to lower them etc. They just don’t last and then > whose responsibility is it to replace them. The customer doesn’t want to > pay twice that’s for sure. The other problem is fine tuning… east/west is > OK, but up/down angle of a dish is a PIA. 320 CPEs are not as bad on a > pole for tuning, but the other issues really hurt us. We would rather try > talking the customer into a Rohn 25 40 feet or a bit more depending on > highest building attachment point so that we are not guyed. Even if we do > that at parts / labor cost, its much better long term, and easy to service > the radio. MOST of the time, we are able to sell that at a $ 500 REAL > profit, and a win-win for all > > > > *From:* Af [mailto:af-boun...@afmug.com <af-boun...@afmug.com>] *On > Behalf Of *Tushar Patel > *Sent:* Sunday, June 14, 2015 9:43 AM > *To:* af@afmug.com > *Subject:* Re: [AFMUG] Do you want to see this stuff here? > > > > I agree it is hard to service. Most of the time we have two people to > install but one person to service, some time two. But how is it be > different in Florida than Texas? > > > > We get enough windstorms, we deal with pole bent etc too. > > Tushar > > > > > On Jun 14, 2015, at 7:22 AM, Paul McCall <pa...@pdmnet.net> wrote: > > Push up poles in Florida is a nightmare waiting to happen. We learned > that the hard way. Even with guy wires. And, a pain to service. Kinda > fits your description of NLOS customers below. > > > > *From:* Af [mailto:af-boun...@afmug.com <af-boun...@afmug.com>] *On > Behalf Of *Tushar Patel > *Sent:* Saturday, June 13, 2015 11:52 PM > *To:* af@afmug.com > *Subject:* Re: [AFMUG] Do you want to see this stuff here? > > > > Your point on sector efficiency is the reason we no longer like NLOS > installs. *Yes you may gain few customer with little less effort but in > long run it hurts.* We try to install 40 to 50 feet push-up poles and get > better line of sight. > > Tushar > > > > > On Jun 13, 2015, at 10:44 PM, George Skorup <geo...@cbcast.com> wrote: > > That's great that it works. I'm sure the Telrad stuff and other gear > like it is excellent. For me, it's too expensive. Every way I run the > numbers, I'm looking at 16-18 months for break-even. And that's not > including all of the extra stuff required for a large scale deployment. > > If I can't get 25-30 users per sector, the site is too small to deploy it. > If I'm running a bunch of NLOS customers (which we would since we're about > 55% 900MHz), lots of low modulation users really sucks for sector capacity. > And those NLOS shots, like Ken says, will they continue to work? When the > trees are soaked, covered in ice, etc., does it go to shit and I have to > listen to customers bitching because they were getting 20+Mbps and now get > <5Mbps? Which again is a hit on sector efficiency. > > On 6/13/2015 8:48 PM, Ken Hohhof wrote: > > One thing I experienced with 3.65 GHz WiMAX was an install that turned > out to work only because of signal bouncing off the tall tree leaves, and > stopped working in November when the leaves went away. We should have been > suspicious when aligning for best signal actually had the CPE pointed up at > about a 30 degree angle. > > > > I have seen something similar with 900 MHz. > > > > > > *From:* TJ Trout <t...@voltbb.com> > > *Sent:* Saturday, June 13, 2015 8:15 PM > > *To:* af@afmug.com > > *Subject:* Re: [AFMUG] Do you want to see this stuff here? > > > > How does LTE penetrate hills? This is the second or third "through a hill" > story in the last week? > > > > On Sat, Jun 13, 2015 at 3:50 PM, Patrick Leary <patrick.le...@telrad.com> > wrote: > > RSRP, it is a measurement. It is a truer number than RSSI, which is only > an estimate (so I'm told). As Ken said, basically add 30 to get an idea of > the RSSI value. > > > > *Sent from my Verizon Wireless 4G LTE DROID* > > On Jun 13, 2015 5:36 PM, Mathew Howard <mhoward...@gmail.com> wrote: > > Yeah... something like that. Notice that is -108 CINR, not RSSI, like the > numbers we're all used to. > > > > On Sat, Jun 13, 2015 at 4:27 PM, Ken Hohhof <af...@kwisp.com> wrote: > > I think Patrick said to add 30 dB to Telrad signal numbers because they > were “per subcarrier” or something? > > > > *From:* Colin Stanners <cstann...@gmail.com> > > *Sent:* Saturday, June 13, 2015 4:17 PM > > *To:* af@afmug.com > > *Subject:* Re: [AFMUG] Do you want to see this stuff here? > > > > Patrick, I haven't been following Telrad but that's too incredible - I > can't see how -108, which is below the noise floor for any reasonable > channel bandwidth (20mhz+?) could get any reasonable speed, much less > those. > > > > On Sat, Jun 13, 2015 at 3:57 PM, Patrick Leary <patrick.le...@telrad.com> > wrote: > > Should I resist sharing this sort of thing? If it's out of line, let me > know Chuck. > > <mime-attachment.png> > > > > -----Original Message----- > From: telrad-boun...@wispa.org [mailto:telrad-boun...@wispa.org] On > Behalf Of Steve Discher > Sent: Friday, June 12, 2015 7:51 PM > To: tel...@wispa.org > Subject: [Telrad] Another Telrad success story > > > > Not to flood the list with these but Zirkel is having great results. > > > > > > > > > ************************************************************************************ > > This footnote confirms that this email message has been scanned by PineApp > Mail-SeCure for the presence of malicious code, vandals & computer viruses. > > > ************************************************************************************ > > > > > > > > > > > > > ************************************************************************************ > This footnote confirms that this email message has been scanned by > PineApp Mail-SeCure for the presence of malicious code, vandals & computer > viruses. > > ************************************************************************************ > > > > > > > > > > ************************************************************************************ > This footnote confirms that this email message has been scanned by > PineApp Mail-SeCure for the presence of malicious code, vandals & computer > viruses. > > ************************************************************************************ > > > > > > > ************************************************************************************ > This footnote confirms that this email message has been scanned by > PineApp Mail-SeCure for the presence of malicious code, vandals & computer > viruses. > > ************************************************************************************ > > > > > > >
