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DFMA Repeaters

Hillsborough
147.225+ PL:82.5
224.260 -
443.1375+ DMR

TV Hill
145.450 - PL:82.5
444.100+ PL:82.5

VA Hospital
444.450+ PL:100.0

[more repeater info]

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Upcoming Events

Tue Mar 28 @ 6:05AM - 07:15AM
PT Net - Stephen, WA1USS, ncs
Wed Mar 29 @ 6:05AM - 07:15AM
PT Net - Rhett, KE4HIH, ncs
Thu Mar 30 @ 6:05AM - 07:15AM
PT Net - Bob, W4RWC, ncs
Thu Mar 30 @ 8:00PM - 09:00PM
DFMA&ARES Net, KK4EIB ncs
Fri Mar 31 @ 6:05AM - 07:15AM
PT Net - Bob, W4RWC, ncs
Fri Mar 31 @ 8:30PM - 09:30PM
6m FM Net, K4WCV, ncs
Welcome to the Durham FM Association

The Durham FM Association is a group of friendly amateur radio operators interested in all aspects of amateur radio service. Members from Durham, Chapel Hill, Raleigh, and surrounding areas of North Carolina enjoy operating through VHF and UHF repeaters sponsored and maintained by the club.

Currently the club operates FM voice repeaters on 145.450-, 147.225+, 224.260-, 444.100+ PL:100.0 and 444.450+ MHz (the plus and minus indicating standard offsets on the respective bands).

We normally meet on the 1st Tuesday of the month (see Calendar) with Dinner (optional) at 6:00pm and the business meeting and program at 7:00pm.  We are meeting at Bullock's BBQ, on 3330 Quebec Drive in Durham. [click for map] (For more info on each meeting, check the Calendar entry.)

Our club runs a great hamfest toward the end of May each year. This year DurHamFest was at a new location!  Set just off I85 in Durham, it was in the Durham Public Schools Staff Development Center at 2107 Hillandale Road Durham, NC 27705. Dealers sell new and used equipment, books, and parts in an air-conditioned facility.  Outside, "tailgaters" also offer a wide variety of used, lightly used and some new equipment and supplies. Besides the buying, selling, and trading, door prizes and fellowship with old and new friends make this a really fun event. (Click on the DurHamFest tab above for more information.)


 
VA Repeater Back Up - PL Required Print E-mail
Written by NC4CD   
Tuesday, 21 February 2017 14:58

On Monday, February 6, the DFMA 444.450 repeater went back on the air at the Durham VA Hospital!

The new VA repeater is just a basic 440 MHz. repeater (a Kenwood TKR-850 just like the repeaters at Hillsborough and TV Hill). It does not have the 100 watt PA like we have at the other repeater sites. Also, there is no autopatch.

The repeater antenna is on the tower on the roof of the VA. The repeater has a simple controller which provides a few voice ID messages, timers, courtesy tones, and control via a separate receiver if the repeater should fail and need to be shut off.

There is one new feature on the 444.450 repeater. It requires users to send a PL tone of 100.0 Hz to access the repeater. No 100 Hz tone, no repeater! It’s time to program all your radios to encode 100.0 Hz on your 449.450 transmitter. It’s ok to get out the manuals for the radios to remember how to change the programming of your radios. While you are programming all your radios, go ahead and program PL encode of 82.5 Hz for the 147.825-147.225 repeater at Hillsborough and both the 144.85-145.45 and 449.1-444.1 repeaters at TV Hill. We have not turned on PL decode at Hillsborough and TV Hill but we will be doing so in the near future. While these three repeaters are carrier access, it will not be a problem if you have the 82.5 PL encode programmed on those memories.

When you get the PL tones programmed in your radios, the only thing remaining to do is to pick up the mike and talk on the repeaters.

If you click on the last line of the "DFMA Repeaters" entry at the left margin of this page, you can get a compact summary of the DFMA repeater info and more repeater stuff.



Last Updated on Tuesday, 21 February 2017 15:07
 
Feb 7 Program: Durham's Emergency Communications System Print E-mail
Written by KW4KZ   
Thursday, 02 February 2017 10:21

Speaker:  Marshall Sherard, KE4ZNR
Topic:  Emergency communications system for Durham and how it interfaces with adjacent community emergency systems.

The Communications Maintenance Division of Durham Emergency Communications maintains approximately 4000 radios, four tower sites and four 911 centers. We also provide 24/7 emergency support for the 24 channel Motorola P25 7.13 800MHz emergency public safety radio system. We also provide installation and repair of City radios and other electronic equipment (which includes lights, sirens, computers, and cameras) and also provide radio repairs and installations for most of the County agencies.

Bio:  Marshall works as a Radio Systems Engineer within Communications Maintenance for the city of Durham, NC and is active in Radioreference.com, Carolinasfirepage.com and all around scanner/shortwave radio buff!

North Carolina/South Carolina Forum Moderator: Radioreference.com

North Carolina/South Carolina Database Administrator: Radioreference.com

National Dispatcher [714] for CFP at Carolinasfirepage.com

Central North Carolina Public Safety Communications Consultant

 

 
The Classic Exchange is Coming Print E-mail
Written by WQ8U   
Saturday, 07 January 2017 23:23

The classic Exchange (CX) is a forty one year old contest / on-air celebration of the great commercial, kit and home brew rigs of the past. Scoring is important but sharing the experience again of operating and working those rigs of decades ago is a real payoff. CX is open to everyone however modern rigs have a scoring disadvantage - but they can still work the "great ones."

The CW session is Jan 29th and Jan 31st.
The AM/SSB/FM session is Feb 19th and Feb 21st.

Full details are at:
CLASSIC EXCHANGE - Winter 2017
(Note that the two weekends straddle Superbowl weekend.)

Last Updated on Monday, 09 January 2017 19:46
 
OCRA Meeting & VE Testing CANCELED due to weather Print E-mail
Written by W4SAR   
Friday, 06 January 2017 21:34

Hi All-

Due to the winter storm now starting to affect our area through the weekend, the Orange County EOC will be activating tonight , and at minimum will be active through Sunday. The monthly OCRA meeting, as well as the exam session will be cancelled. Elections for club officers and board members will be postponed until the February meeting.

I had contacted the EOC this morning, asking them to contact me as soon as possible if they believe the training room would be active use or on standby due to events. I received the response just a few minutes ago, and stated they felt it best that we make alternate arrangements as it is not clear when the EOC will stand down.I decided on a cancellation instead of a change in venue as travel conditions on Monday may still be unsettled

Thank you all for your understanding. Get the word out and stay safe.

Dave Snyder, W4SAR

Last Updated on Friday, 06 January 2017 21:46
 
Jan 3 Program: A Raspberry Pi, NOAA Weather Station Print E-mail
Written by KW4KZ   
Friday, 23 December 2016 22:14

The speaker for the January club meeting will be Jim, KE4ROH with a presentation on a Raspberry Pi, NOAA Weather Station.  He provided the following background info.

Abstract: Alert the office, school, city, or your family to the tornado warning for their specific area. Automatically initiate a pre-recorded announcement or activate an alarm to encourage everyone to take shelter – but only if the alert affects the area. This information is available via the internet, but the internet might fail in the event of a serious storm. Redundancy via the weather band provides additional certainty that the message is received correctly. This open-source project takes us through python coding, GitHub, continuous integration, integration of messages from different sources with different specificity, and testing of a device that should carry out its primary function perhaps annually. The finished product will be suitable for offices, schools, and outdoor alerting.

Bio: From the country’s hot spot for tornadoes per-capita, Huntsville, Alabama, Jim brings together an understanding of the severity of tornadoes and concern for fellow Red Hatters’ safety as a Safety Warden into a nighttime coding gig to create the ultimate tornado warning device.

 
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