N5MBM.endoftheinternet.org AKA www.n5mbm.net


Welcome to our little corner of the internet... At the end of the internet!  You have connected to the rack full of servers for N5MBM and our little retirement farmlet in the hills of Chappell Hill near Brenham TX.  I am a retired computer professional and avid electronic hobbyist.  These pages let you peek into my ham shack and see what's cooking!

I tinker with everything!

Our hobbies include much more than just Ham Radio...  Below are a few things we do to feed data to the World Wide Web.

The shack

Below are a list of resources that we provide.


"The Texas Connection" - A network of internet linked repeaters

"Washington County Amateur Radio Club" - A local ham radio club in Brenham, TX. residing on our servers

Chappell Hill TX area Ham Radio FM Voice Repeaters - Local FM repeaters

Washington County Tx area Ham Radio FM Voice Repeaters - Local FM repeaters

Our online Weather station  - Chappell Hill, TX weather 24/7/365

Lightning Tracking Project - Lightning tracking map in real time

The Listening Post - Scanner Streaming Audio Servers

BroadbandHamnetV3 - Wireless networking over Ham radio frequencies

Home Seismometer Project - Almost real time seismometer at my home

ADS-B Flight Radar Monitoring Project - I track airplanes too!

Back Yard Repeaters - My toys in the repeater hut

Email services

About us

Useful Links

Minecraft Server info

Our other hobbies and interests

My Latest Erection - A tower erection Blog

My 1977 Porsche 924 Resto-Mod Project


Chappell Hill Texas area map of LINKED repeaters

Real time map of connected nodes to our repeater system 

^^^^  Listen to the N5MBM nodes with a 20 second delay  ^^^^

For more info, click the links below...

To listen to "almost live" (20 second delay) streaming audio from the N5MBM repeater system -  click here 

N5MBM Chappell Hill VHF/UHF Crossband repeater - Operational again as of 2/14/2014

Chappell Hill, TX. - 6 meters  -  52.35 tx  51.35 rx with DCS 131  - AllStar Node 42413 -   Operational

Chappell Hill, TX. - 2 meters - 145.150 tx 144.55 rx with a tone of 103.5 - AllStar Node 42414Operational

Daniels, TX - 2 meters - 145.250 tx 144.65 rx with a tone of 103.5 - AllStar Node 45442Operational

Chappell Hill, TX. -  1.25 meters - 224.900 tx 223.300 rx with a tone of 103.5 -AllStar Node 42471 - Operational

Chappell Hill, TX. -  70 cm - 441.625 tx  446.625 rx with a tone of 103.5 - AllStar Node 42466 - Operational

Independence, TX - 70 cm - 441.850 tx 446.850 rx with a tone of 123.0 -AllStar Node 45643 - Operational

KF5KXL Industry, TX - 70 cm - 441.675 tx 446.675 rx with a tone of 103.5 -AllStar Node 45442 - Operational

Daniels, TX - 70 cm - 441.300 tx 446.300 rx with a tone of 103.5 -AllStar Node 43035 - Operational

Kruse Village, Brenham, TX - 70 cm - 441.925 tx 446.925 rx with a tone of 123.0 -AllStar Node 45443 - Operational

W5TZ Kenney, TX - 70 cm - 441.800 tx  446.800 rx with a tone of 127.3 - AllStar Node 4078Operational

W0FCM Sealy, TX - 70 cm - 442.025 tx 447.025 rx with a tone of 123.0 -AllStar Node 29695 - Operational

Chappell Hill, TX. -  33 cm - 927.150 tx 902.150 rx with a tone of 103.5 - AllStar Node 42817 Operational

Chappell Hill, TX. - 23cm  - 1287.100 tx 1275.100 rx with a tone of 103.5 - AllStar Node 45645Under Construction

N5FRT / WB5HVH Fayette County, TX. - 2 meters - 145.270 tx 144.670 rx with a tone of 114.8 - Echolink Node 455276 Operational

Click here to see the "Real-Time" Supermon status of our linked repeater system

Common Sense Rules for using the Chappell Hill area Repeaters

Weekly Net Schedule



Status update: 05/21/2017

Everything is all back up and working like it should!

Status update: 05/10/2017

Almost all of our repeaters are all back up! I had a problem with 441.625 and need to swap out radios and the Xband repeater died.  But everything else is back up and running!  The 145.15 repeater and the 441.300 repeater should work better than ever now that the antennas are up at 100 ft.


Status update: 05/07/2017

Our repeaters are all down at the moment due to the tower and antennas being worked on.  We should be back on-line before the end of the week!  The networked system is still up and running, only the RF portion of the system is off the air at this time.

The tower is being raised to its full height and the system should perform better than ever.

Please be patient with us as we upgrade our facilities.

Status update: 04/25/2017

We found a set of 1.2GHz duplexer cans on eBay!  Now we are feverishly hunting for a suitable antenna to make the 1.2 GHz repeater work!

Several of the local UHF repeaters have changed frequencies to get them off of the "Backyard Repeater" frequencies and onto Coordinated protected frequency pairs.  Please notice that some of them are now on PL123.0!  Please welcome Pam KF5KXL in Industry and the Prairie Hill / Rocky Hill Fire Department repeaters to the mix!

Many thanks to Fred W0FCM for all of his help getting all this stuff working like a champ and James KB5RIR for hosting our ARES hub up in Dallas!

Now actively looking for hams to host additional VHF/UHF LINKED repeater sites in or around the Lake Somerville, Navasota, Waller and Bryan/College station areas. We have the gear, we just need sites to put them at that have full time Internet connections available.

Status update: 03/31/2017

We found an Icom IC-RP-1220 10w 1.2 GHz repeater on eBay!  Now we are feverishly hunting for a set of duplexer cans and a suitable antenna to make it all work!

Status update: 03/21/2017

We changed our 6m repeater setup - we changed from 103.5PL over to DCS 131.  This is Digital Coded Squelch.  Most modern radios have it, although most hams don't use it.  It is on the input and output as DCS 131.  For scanner listeners this won't be an issue, they just leave the tone off the frequency entry.  We made this change to eradicate the howling interference that sometimes comes and goes sporadically and without warning and hangs the system up.  It also makes it impossible to leave our 6m machine in transceive mode on the WIN system!  We are testing this new change and we will see how it goes.  It should solve the interference problem.  Please send any commments or signal reports to N5MBM.

The Quantar 900 MHZ repeater had a PA failure, we repaired it and it is back online as of today at full power!

Status update: 02/25/2017

We installed a new repeater at Kruse Village in Brenham, TX. It is on 441.325 + PL103.5 and it is working quite well!  Range has been measured at about 15 miles.  Not bad for a 5 watt repeater with an antenna mounted at 20 ft. above the ground!  We also revived the W5TZ repeater down in Kenney, TX. and got him back on the air with a whole new repeater.  Both are connected to the Chappell Hill HUB 24/7/365 to facilitate county wide communications.  In other good news, we purchased a new spectrum analyzer with a tracking generator in it!  It makes tuning cavities and filters an absolute breeze...

Status update: 08/21/2016

We revived the Scanner server from a Microsoft induced coma and added the N5MBM repeater system live audio feed to a reflector on RadioReference.com and Broadcastify.com.  Now you can listen to the N5MBM repeater system via a web browser window.  It is "Almost live" as there is a built in 20-45 second delay due to it all being digitized, sent across the internet and processed before being sent to you.  But we have our Amateur radio streaming audio back up now!

Status update: 07/13/2016

We just replaced our 900 MHz repeater with a Motorola Quantar unit!  Now running 75w on a 100 system designed like a tank.  It should give us many years of service!  Along with a new repeater came a new Wacom WP-687-3943 900 MHz Diplexer converted into a duplexer set up for the ham bands too!  Our coverage just got tripled on 900 MHz...

Status update: 02/21/2016

Power increase project complete: We recently carefully increased the power on all systems.  The 6m repeater is now running 100w into the duplexers with an amplifier.  The 2m repeater is now running 100w into the duplexers with an amplifier.  The 220 repeater is now running 25w into the duplexers.  The 440 repeater is now running 45w into the duplexers.  Everything seems to be running clean and all my interference issues have been dealt with.  I am still hunting for amplifiers for 220 and 440 MHz.

The 6m repeater is now being tested by being connected to the WIN system 24 hours a day.  The amplifier is running cool even with a heavy traffic load during certain times of the day.  The 441.300 repeater has now been dedicated to our net schedule, thus leaving the rest of the system open for normal day to day local communications.  This arrangement allows people the chance to talk all over the world on 6m and participate on worldwide nets on 440 AND be able to talk privately, locally without talking to the whole world.

Our 2m/70cm cross band link into Brenham is slowly dying.  Duties are being done by an OLD 1980's vintage Icom dual band mobile rig with cross band repeat built in.  It is now showing its age and becoming deaf and incredibly slow on PL detect.  Probably due to old caps that just can't hold together anymore.  It will soon be replaced by a cross band Motorola radio setup with the same PL tones and also be frequency agile to keep our systems flexibility intact allowing us to quickly change frequencies to link into various repeater systems outside HT range from the Chappell Hill metroplex area.


Status update: 12/25/2015

The transition to an ALL Asterisk controller based system is now complete.  The Arcom has been retired to duty on our 220 repeater only.  The internet connection has been upgraded and is now more reliable.  Lightning protection has been installed.  The 900 MHz repeater is now operational!  New double shielded cables have been swapped out making 98% of our interference issues disappear.  And Santa Claus brought me a new 6m/2m HT and a new tower climbing harness!

Merry Christmas and a Happy New Year!

Status update: 12/13/2015

We are in the middle of upgrading and migrating away from the Arcom RC210 controller to a Asterisk based Linux machine for a multi-port controller to tie all the different repeaters together.  This will add much more flexibility in how we do things and how the world wide web can connect to our repeaters and USE them.  Many many thanks to W0FCM for helping me make this a reality!  We have added AllStar and Echolink to our system and we are in the testing phase.  We have also RE-tuned our 70cm duplexers giving us more range.  We have made some small upgrades recently and will be upgrading the system even more in the near future with upgraded power supplies and MORE POWER!  :)

Status update: 11/04/2015

The tower is finished (to 50 ft. at the present time) and all ports are now active!  (The 100 ft. tower extension project is in the works!)

Status update: 09/03/2015

We are now officially coordinated!  The new 6m repeater is now online!  Antennas have been upgraded, equipment moved and we are prepping for the big tower project.

Status update: 07/04/2015

All repeaters and nodes that should be operational, ARE now operational!  Everything is nominal and back on the air!

STATUS UPDATE: 5/29/2015

As of May 2015 a VERY direct lightning strike has taken out our ATV repeater, the VHF, UHF and cross band repeaters and all the associated feed lines, antennas and power supplies.  We are diligently trying to get things back up and on the air, but it will take some time...


STATUS UPDATE: 4/11/2015

We have been moving and renovating our facilities.  New power feeds, new UPS's, new racks and most importantly, MORE ROOM!  We have been busy adding features!  We have recently upgraded our routers, upgraded our network gear and upgraded multiple servers to better serve nice people like YOU.  Please be patient as some options may not work every time you try them.  We are working on several different facets of our network, servers and radio equipment all  at the same time and chasing bugs down has been like an evil game of whack-a-mole! 



This simple web page of links is under construction.  It  will be edited at random and is in a constant state of being updated...

Until further notice, WCARC repeaters will no longer be able to be accessed directly via this website on the Internet.


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