Re: [Repeater-Builder] Re: Band Pass Duplexer Tuning

On 2/22/07, fxbuilder <[EMAIL PROTECTED]> wrote: > I didn't have a load on the 3rd port when I tuned it. I only have 1 > dummy load. I can add an antenna to the 3rd port though I know that > would less than ideal but better than nothing I suppose. I have found > some schematics for the pads and

[Repeater-Builder] Re: Band Pass Duplexer Tuning

ned internally to pass a frequency only on one side of the notch. > > 73 > Gary K4FMX > > > -Original Message- > > From: Repeater-Builder@yahoogroups.com [mailto:Repeater- > > [EMAIL PROTECTED] On Behalf Of fxbuilder > > Sent: Tuesday, February 20, 2007 9:49

RE: [Repeater-Builder] Re: Band Pass Duplexer Tuning

Gary K4FMX > -Original Message- > From: Repeater-Builder@yahoogroups.com [mailto:Repeater- > [EMAIL PROTECTED] On Behalf Of fxbuilder > Sent: Tuesday, February 20, 2007 9:49 AM > To: Repeater-Builder@yahoogroups.com > Subject: [Repeater-Builder] Re: Band Pass Duplexer Tu

Re: [Repeater-Builder] Re: Band Pass Duplexer Tuning

At 06:49 AM 2/20/2007, you wrote: >Ok... So I've tuned this duplexer as a notch device. Put a 2 watt >handheld into a dummy load and watt meter (not in that order mind you) >and it seems to reject the corresponding frequencies. My question now >is... Why did my swr jump from 1:1.3 to 1:3. Do I nee

[Repeater-Builder] Re: Band Pass Duplexer Tuning

rs are fixed. The cavities will tune but the loss > goes. > > 73 > Gary K4FMX > > > -Original Message- > > From: Repeater-Builder@yahoogroups.com [mailto:Repeater- > > [EMAIL PROTECTED] On Behalf Of fxbuilder > > Sent: Friday, February 16, 2007 5:09 P

RE: [Repeater-Builder] Re: Band Pass Duplexer Tuning

. 73 Gary K4FMX > -Original Message- > From: Repeater-Builder@yahoogroups.com [mailto:Repeater- > [EMAIL PROTECTED] On Behalf Of fxbuilder > Sent: Friday, February 16, 2007 5:09 PM > To: Repeater-Builder@yahoogroups.com > Subject: [Repeater-Builder] Re: Band Pass Dupl

Re: [Repeater-Builder] Re: Band Pass Duplexer Tuning

At 02:09 PM 2/16/2007, you wrote: >I emailed the place I bought it from and that is what I was told. >Band Pass. No caps on it for notch tuning as on celwave. Am I missing >something here? <---As Skipp pointed out, most the so-called "mobile duplexers" are notch only. You have a make and model #

Re: [Repeater-Builder] Re: Band Pass Duplexer Tuning

At 02:14 PM 2/16/2007, you wrote: Yes, this is a flat pack. The place I bought it from told me it was a band pass. Thanks Scott, I'll try your method. Craig

[Repeater-Builder] Re: Band Pass Duplexer Tuning

Yes, this is a flat pack. The place I bought it from told me it was a band pass. Thanks Scott, I'll try your method. Craig --- In Repeater-Builder@yahoogroups.com, "Scott" <[EMAIL PROTECTED]> wrote: > > If you are talking about a "flat pak" duplexer, they are easy. > > Hook a receiver (or s

[Repeater-Builder] Re: Band Pass Duplexer Tuning

If you are talking about a "flat pak" duplexer, they are easy. Hook a receiver (or scope) to the "high" side and set the monitor frequency to the "low" frequency. Inject the "high" freqency into the antenna port. Tune for the deepest null. Then hook the monitor to the "low" side set for the "hi

[Repeater-Builder] Re: Band Pass Duplexer Tuning

I emailed the place I bought it from and that is what I was told. Band Pass. No caps on it for notch tuning as on celwave. Am I missing something here? Craig --- In Repeater-Builder@yahoogroups.com, Ken Arck <[EMAIL PROTECTED]> wrote: > > At 01:53 PM 2/16/2007, you wrote: > > >There is a gre

[Repeater-Builder] Re: Band Pass Duplexer Tuning

Yes there is... but it's really big even for UHF. Phelps Dodge Made one and I've seen a number of odd ball units around with Harris labels on them. Normally the "smaller" mobile duplexer are notch-pass (aka notch-notch). But everything is possible... and probably tried at least once. cheers,