Hi Ken, I think you dont have any choice to use many N male connectors to do some test.
The most critical cable is between the antenna T and the Reject can connector. Maybe you have a mismatch in your coupling loops, it is very important to respect the same coupling on each cavity to conserve your 50 Ohms? The typical insertion for the C2037 (3 Pass and 1 Reject) is 3.2dB total loss and if your reject is mistune a little bit you will have bad results and a lot on attenuation in you system. Maybe this can you help 73 Eric _____ De : Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] De la part de vo1ken_2000 Envoyé : 30 janvier, 2008 10:39 À : Repeater-Builder@yahoogroups.com Objet : [Repeater-Builder] Re: VHF Multi-coupler harness question Thanks Eric, The harness is factory with 2 crimp T's and 2 crimp 90deg N Males. Between feed through T's: Coax centre conductor is 11.25" (12.75" connector centre pin tip to tip) and .75" Short. Between the T's and Can connectors: Coax centre conductor is 3" (4 3/4" connector center pin tip to tip) and 1" Short. To make up a new harness (and not having access to new crimp T's) can the T's be connected to the cans directly or does the feed through connections be 4" either side? Just thinking 2 N-male connectors Vs. 6. Many thanks for your help on this. Ken --- In Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com> yahoogroups.com, "Eric Vincent" <[EMAIL PROTECTED]> wrote: > > Hi, > > The length of cable for low split 138-145MHz C2037 multi coupler is: > > > > 4'' between reject and T FFF UG28A/U > > 4'' between first pass and T FFF UG28A/U > > 12'' between feed through T and Antenna T > > 24'' between the other pass > > > > The length of cable is only for cable without connectors. Use RG- 214 is the > best on this thing. > > > > 73' and good work. > > Eric VE2VXT > > > > > > > > > > > > > > _____ > > De : Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com> yahoogroups.com > [mailto:Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com> yahoogroups.com] De la part de vo1ken_2000 > Envoyé : 28 janvier, 2008 20:56 > À : Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com> yahoogroups.com > Objet : [Repeater-Builder] VHF Multi-coupler harness question > > > > I've been experimenting with a Sinclair 4 cavity C-Series VHF Multi- > Coupler however have high loss between the antenna connector and the > feed through connector. > X > | > | > - Connector to antenna > | > - Band-Pass Cans to 144.390 Tx/Rx > | > - Feedthrough connector to next multi-coupler > | > - Band Re-ject 144.390 > > The ex-commercial multi-coupler was factory tuned for 155MHz and I'm > trying to rework it down to APRS (144.390) > > Can anyone point me to where I can find the formula to make up a new > 4 connector cable? > > Any help would be greatly appreciated. > > Thanks > Ken >
