Typically not a good idea. Always turn off radios and ESPECIALLY amps when working on antennas.
Kevin Summers KISTech Internet Services Inc. www.kistech.com > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Rudolph Worrell > Sent: Friday, October 17, 2003 1:48 PM > To: [EMAIL PROTECTED] > Subject: RE: [smartBridges] [smart Bridges] Amps! > > > Now I am scared. I worked on my sector last night for about 6 > hours and at > times I stood in front of the antenna while powered up. > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Kevin Summers > Sent: Friday, October 17, 2003 10:26 AM > To: [EMAIL PROTECTED] > Subject: RE: [smartBridges] Amps! > > > > Just don't start complaining about the > squirrels with two tails... :-) > > There are several things to consider when using > AMPs. > > 1. AGC is the best way to go. That way you know > exactly how much power is available at the output > of the AMP. The TT AMPs are nice because you can > put anything from 1db, to 100db into it and you > will always get the rated power out of the AMP. > > 2. Never use an AMP with an Omni. It just sprays > signal everywhere and you get multipath out the > ... > > 3. Always put the AMP at the top. A short pigtail > to the antenna. That's it. If you put the AMP at > the bottom you are just amplifying the noise on > the coax along with your signal and it wont help > you any. > > 4. Less is more. A 1 watt AMP is useful if you > are setting up a 50 mile point to point link. > Otherwise just put a 19db grid on it and tie a > bag of microwave popcorn on a stick and hold it > in front of the antenna for an hour for a tasty > treat. :-) A 250mW AMP with a 14db sector has > proven to be about the best combination for us > in this heavily congested RF environment. With > an AGC AMP we're putting 24db out, then 2db > loss for the pigtail to the antenna, then a 14.5 > db 90 degree sector. With that combination we've > been able to link up with a customer at just over > 16.5 miles. > > 5. Resist the urge to put an amp on a customer > end. It just makes a mess of the RF in the area. > > 6. Even though you are running an uncertified system, > be very aware that you need to stay as close as possible > to the legal limit, if not just a hair under it. All it > takes is a phone call from a HAM that has the equipment > to measure how much power you are putting out of your > sector antenna and you'll have to fix it or be shut down. > > Yes, we aren't running certified, but we aren't running > over powered either. (we tried it and it didn't work well > anyway) It's best to do everything you can to keep the > noise floor down. AMPs are great, when used with a little > planning. > > Kevin Summers > KISTech Internet Services Inc. > www.kistech.com > > > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] Behalf Of Rudolph Worrell > > Sent: Friday, October 17, 2003 3:56 AM > > To: [EMAIL PROTECTED] > > Subject: RE: [smartBridges] Amps! > > > > > > It is not compliant but certified that is why this is in a test > > environment. > > > > It turns out that unless there is a large cable run or low > radio power the > > amp is going to put you over the FCC limit. I basically wanted > to see how > > an amp would help me increase my range. And as far as I have > > seen so far it > > does not help me increase my range and still be abiding by the law. > > > > Perhaps a point to point link from the forest is where this 1 > > Watt amp would > > help. > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] Behalf Of Gino Villarini > > Sent: Thursday, October 16, 2003 11:17 PM > > To: [EMAIL PROTECTED] > > Subject: RE: [smartBridges] Amps! > > > > > > yes... > > > > but, I see FCC with 2 eyes... one is certified equipment and > the other is > > complaint equipment... > > > > the appo + amp + 12 bd omni is neither > > Gino > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] Behalf Of Bill Flood > > Sent: Friday, October 17, 2003 12:20 AM > > To: [EMAIL PROTECTED] > > Subject: RE: [smartBridges] Amps! > > > > > > Gino, > > > > Isn't any amp in violation of the FCC code Part 15?? Unless of > course it > > has been certified with the FCC as a combined unit. > > > > Bill > > > > > > At 11:08 PM 10/16/2003 -0400, you wrote: > > >you know your over legal limits with that amp - antenna combo right? > > > > > >Gino > > > > > >-----Original Message----- > > >From: [EMAIL PROTECTED] > > >[mailto:[EMAIL PROTECTED] Behalf Of Stuart Pierce > > >Sent: Thursday, October 16, 2003 10:24 PM > > >To: [EMAIL PROTECTED] > > >Subject: RE: [smartBridges] Amps! > > > > > > > > >a 12db omni, wow. > > > > > >---------- Original Message ---------------------------------- > > >From: "Pascal Losier" <[EMAIL PROTECTED]> > > >Reply-To: [EMAIL PROTECTED] > > >Date: Thu, 16 Oct 2003 23:08:15 -0300 > > > > > > >You are listenning a 35 miles radius all around....... Hope > your in the > > > >wood. > > > >-----Original Message----- > > > >From: [EMAIL PROTECTED] > > > >[mailto:[EMAIL PROTECTED] On Behalf Of Rudolph Worrell > > > >Sent: Thursday, October 16, 2003 10:52 PM > > > >To: [EMAIL PROTECTED] > > > >Subject: [smartBridges] Amps! > > > > > > > > > > > >I have a question for anyone who is using or used an am > > before. Do they > > > >work well with your SB equipment? > > > > > > > >I have a 1 watt amp on an a 12 dBi Omni connected to an > APPO. I wanted > > > >to see if it would boost my signal substantially. Well it did > > for a few > > > >hours and now all my LQ's are jumping from 0% - 90%. Any clue? > > > > > > > >I spoke to the manufacturer and he told me that I must set > the SB AP to > > > >10dBm and that is all I can do or else I could fry the amp. > Well SB AP > > > >only goes down to 11.5dBm. > > > > > > > >I think I am getting a lot of noise from that AMP on the > receiving side > > > >because the the signal strength is great but the LQ sucks. > > > > > > > > > > > > > > > > > > >--- > > >[This E-mail scanned for viruses by Declude Virus By Avolve.net] > > > > > >----------ANNOUNCEMENT---------- > > >Don't forget to register for WISPCON IV > > >http://www.wispcon.info/us/wispcon-iv/wispcon-iv.htm > > > > > >The PART-15.ORG smartBridges Discussion List > > >To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe > > >smartBridges <yournickname> > > >To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe > > >smartBridges) > > >Archives: http://archives.part-15.org > > > > > >----------ANNOUNCEMENT---------- > > >Don't forget to register for WISPCON IV > > >http://www.wispcon.info/us/wispcon-iv/wispcon-iv.htm > > > > > >The PART-15.ORG smartBridges Discussion List > > >To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe > > >smartBridges <yournickname> > > >To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe > > >smartBridges) > > >Archives: http://archives.part-15.org > > > > Bill Flood > > AirRunner Networks LLC --- We make the web fast! > > If you get tired of the wait call 715-443-3700! > > www.airrun.net > > > > ----------ANNOUNCEMENT---------- > > Don't forget to register for WISPCON IV > > http://www.wispcon.info/us/wispcon-iv/wispcon-iv.htm > > > > The PART-15.ORG smartBridges Discussion List > > To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe > > smartBridges <yournickname> > > To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe > > smartBridges) > > Archives: http://archives.part-15.org > > > > ----------ANNOUNCEMENT---------- > > Don't forget to register for WISPCON IV > > http://www.wispcon.info/us/wispcon-iv/wispcon-iv.htm > > > > The PART-15.ORG smartBridges Discussion List > > To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe > > smartBridges <yournickname> > > To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe > > smartBridges) > > Archives: http://archives.part-15.org > > > > ----------ANNOUNCEMENT---------- > > Don't forget to register for WISPCON IV > > http://www.wispcon.info/us/wispcon-iv/wispcon-iv.htm > > > > The PART-15.ORG smartBridges Discussion List > > To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe > > smartBridges <yournickname> > > To Remove: mailto:[EMAIL PROTECTED] (in the body type > > unsubscribe smartBridges) > > Archives: http://archives.part-15.org > > ----------ANNOUNCEMENT---------- > Don't forget to register for WISPCON IV > http://www.wispcon.info/us/wispcon-iv/wispcon-iv.htm > > The PART-15.ORG smartBridges Discussion List > To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe > smartBridges <yournickname> > To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe > smartBridges) > Archives: http://archives.part-15.org > > ----------ANNOUNCEMENT---------- > Don't forget to register for WISPCON IV > http://www.wispcon.info/us/wispcon-iv/wispcon-iv.htm > > The PART-15.ORG smartBridges Discussion List > To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe > smartBridges <yournickname> > To Remove: mailto:[EMAIL PROTECTED] (in the body type > unsubscribe smartBridges) > Archives: http://archives.part-15.org ----------ANNOUNCEMENT---------- Don't forget to register for WISPCON IV http://www.wispcon.info/us/wispcon-iv/wispcon-iv.htm The PART-15.ORG smartBridges Discussion List To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe smartBridges <yournickname> To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe smartBridges) Archives: http://archives.part-15.org
