tighten it til the sleeve pops off, cuss, put a new end on and tighten it just a little less.
There is probably a torque rating On Wed, Feb 3, 2016 at 12:41 PM, Chuck McCown <ch...@wbmfg.com> wrote: > Compressing the rubber gasket. > > *From:* Ken Hohhof <af...@kwisp.com> > *Sent:* Wednesday, February 03, 2016 11:38 AM > *To:* af@afmug.com > *Subject:* Re: [AFMUG] weird problem > > How tight is “fully tight”? > > I was taught hand tightened or equivalent, rather than put a wrench on it > and crank it until it bottoms out. Is that wrong? SMA connectors seem to > have a more pronounced stop when they’re tight. > > > *From:* Chuck McCown <ch...@wbmfg.com> > *Sent:* Wednesday, February 03, 2016 12:35 PM > *To:* af@afmug.com > *Subject:* Re: [AFMUG] weird problem > > Yeah, it is interesting to watch a N connector on a network analyzer set > for return loss/VSWR/reflection coefficient. > It gets better with every turn and keeps on improving right up to the last > bit of movement. Anything less than fully tight is causing a problem. > > *From:* Sean Heskett <af...@zirkel.us> > *Sent:* Wednesday, February 03, 2016 11:30 AM > *To:* af@afmug.com > *Subject:* Re: [AFMUG] weird problem > > 3/4 of a turn on an N connector is a lot. You were probably loosing a lot > of RF out that port. > > > On Wednesday, February 3, 2016, Dan Petermann <d...@wyoming.com> wrote: > >> We have two 11GHz links on the same freqs. One V and one H pol. These are >> dual links, 2 - 40Mhz channels. The radios are Dragonwave, one Quantum and >> the other a Horizion Duo. >> >> We had to replace the IDU of the Quantum with a DUO and put the link into >> DUO compatibility mode. >> >> After replacing the IDU, we started having issues on the other link. The >> RX levels of one freq dropped by 9dBm, the equalizer stress jumped to 150 >> (should be under 100), and the link would only run at 32QAM. >> >> This morning I moved the IDU up 1 RU (it was sitting directly onto of the >> other IDU) and tightened the coax by 3/4 of a turn. Gained 9dB, lowered >> equalizer stress by 50, and now running at 256QAM. >> >> I check the IF freqs and they were separated by 200MHz. >> >> I’m curious, does anyone have an idea why this happened? > > -- If you only see yourself as part of the team but you don't see your team as part of yourself you have already failed as part of the team.
