GB DMR Repeater Status

[kc9uhi]

9 Oct 2017
This repeater has been replaced by the experimental system. Info in a new thread.
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Posts here will reflect status of the GB DMR Repeater

4 Oct 2015
--repeater programmed to permanent frequency, 442.075 +5
--new duplexer installed
--linked up to DMR-MARC Tri-State Network (WI, NorthEast IL, NorthWest IN)


14Mar2017
--new TriState talkgroup layout

TS1 TG8 -- TriState
TS2 TG13 -- WorldWide English
TS2 TG3 -- North America
TS2 TG9 -- Talk (linked reflector)

More info on talkgroups -- http://tristatedmr.org/talkgroups.html

[kc9uhi]

9 Jan 2016

-Repeater programmed to coordinated frequency of 442.83125 +5
-duplexer retuned

[kb9mwr]

"Coordinated" is probably the wrong word.

As usual looks like someone likely dropped the ball and didn't follow through again:
http://www.wi-repeaters.org/directories/DirByCity.txt

But whatever, as this doesn't impact end user use.

[kc9uhi]

As of 24feb2016 15:32CST it's listed on the "Under Construction" page -- http://www.wi-repeaters.org/directories ... Const.html

Important to note that the listed ColorCode is incorrect; CC1 is actually in use.

[kb9mwr]

Same old song and dance routine from some other person who will remain nameless.

[kb9mwr]

Is there some sort of web based stats for the N9DKH DMR repeater? Like who is using it locally? Locally hosted other other.

I haven't see anything since we collected to the bullshit network on your ARS-E state thing at:
http://qth.kc9uhi.net:14680/

Or can we somehow get our crap to export to this:
http://dmr.darc.de/dmr-rptr.php#USA

[kc9uhi]

Scroll down the dmr.darc.de page and click on "N9DKH"-- direct link http://dmr.darc.de/dmr-log.php?n=30&repeater=N9DKH

[kc9uhi]

As of 25 Mar 2016, repeater on coordinated color code of 6

[kb9mwr]

The Green Bay DMR recently had a PA failure and was not showing any output power (other than exciter). Chad and I swapped the RF boards from the respective TX and RX radios and we have power again. Apparently these (XPR8300/8400) are kind of sensitive when it comes to long term survival with no-so perfect SWRs. After further analysis, we have a 1.8:1 SWR at the site, so I have disabled the repeater. Chad is going to try and track down a circulator. I'll will try and do a more comprehensive analysis of he antenna system this weekend or early next week.

[kc9uhi]

Repeater is back online.

Realigned and tuned repeater, current output is 44w.

Prior to work, took a bunch of measurements. Full system vswr was 2.04:1 on TX, 2.25:1 on RX. Afterwards, about 1.7:1 on TX/RX.

Discovered duplexer was a bit off on the RX side. Had been 87dB TX->RX isolation with 1.9dB insertion loss on RX and 1.4dB insertion loss on TX. After tuning got 100dB isolation TX->RX and 0.93dB insertion loss on RX and 1.4dB insertion loss on TX.


-- Pre-adjustment measurements --
RX thru feedline, antenna -- 1.13:1 VSWR


TX thru feedlilne, antenna -- 1.31:1 VSWR


RX thru cable, duplexer, diplexer, feedline, antenna -- 2.25:1 VSWR


TX thru cable, duplexer, diplexer, feedline, antenna -- 2.04:1 VSWR


Duplexer high side notch (reject tx) -- 86.92dB isolation



-- Post-adjustment measurements on duplexer --

Duplexer high side notch (reject tx) -- 100.02dB isolation


Duplxer high side pass (pass rx) -- 0.93dB insertion loss



See all the measurement pictures -- http://project.kc9uhi.net/forum_pics/gb_dmr_sweeps/