Yes I have to add a tee for the bottom half. The entire antenna is one complete unit 4-folded dipoles. Maybe I assumed and thought all the phasing harness's were already there as I can see where the splits are on the coax.
It is a VHF system. I am measuring from out of the duplexers up the LMR-400 cable and not at the top. --- In [email protected], "'Jeff DePolo'" <[EMAIL PROTECTED]> wrote: > > > Yes, I was using the Top Half of a 4-element antenna. I have > > now added the 3-Way connector and now have the entire antenna > > connected. > > I have noticed it has cleaned up the receive on week stations > > but, it seems to have dropped a little in the signal. > > > > System was just re-tuned, duplexers and radios. It's a > > Motorola MSR-2000 Canadian 40 Watt version. When I add the > > duplexers and the top half of the antenna I get 25 Watts out. > > When I add the second half I get 10 Watts out. Measuring > > the wattage just after the duplexers. > > This doesn't make sense. The transmitter output shouldn't be changing. > It sounds to me like when the second set of bays was connected it wasn't > done with a proper matching/phasing harness, but rather just by "teeing" > the two halfs together. This would throw the match off (a 2:1 VSWR > mismatch best-case), which results in a detuning effect at the duplexer > which makes its insertion loss go up, which is why you're seeing less > TPO. Have you measured the reflected power at the antenna both before > and after adding the second set of bays (or if you can't measure at the > antenna, measure at the output of the duplexer and tell us what kind/how > long your feedline is and we can back-calculate from that). > > Also, what band is this repeater on? > > --- Jeff > > -- > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006 > > > > -- > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006 > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
