HAMDig

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This repeater has been replaced by the experimental system.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

9 Jan 2016

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

"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.

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.

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

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

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

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

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.

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/