Upcoming Events

Mon Oct 05 @ 6:05AM - 07:15AM
PT Net - Jim, KI4HQO, ncs
Mon Oct 05 @ 8:00PM - 08:30PM
10 Meter Sideband Net (N1LN ncs)
Tue Oct 06 @ 6:05AM - 07:15AM
PT Net - Rhett, KE4HIH, ncs
Tue Oct 06 @ 6:00PM - 08:30PM
DFMA Meeting
Tue Oct 06 @ 7:00PM - 08:30PM
A Look at the Internal Workings of AGM VRLA Batteries; Insights on How to Achieve Maximum Battery Life
Wed Oct 07 @ 6:05AM - 07:15AM
PT Net - Rhett, KE4HIH, 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 in 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+ 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. The DurHamFest was held in the Little River Community Complex for the last few years and expect to be there again.  Dealers sell new and used equipment, books, and parts. "Tailgaters" also offer much used equipment. Besides the buying, selling, and trading, door prizes and fellowship with old and new friends make this a really fun event.

Oct 6 Program: A Look at the Internal Workings of AGM VRLA Batteries - Get Maximum Battery Life Print E-mail
Written by KU4GC   
Thursday, 01 October 2015 10:36

Tuesday's program will be "A Look at the Internal Workings of AGM VRLA Batteries; Insights on How to Achieve Maximum Battery Life" by Dan Eddleman, KR4UB.

Dan reports: “This presentation will take a very brief look at the internal construction differences and the gas recombination process that allows VRLA batteries to be sealed, common failure mechanisms, and new charging practices that have been implemented by the major UPS manufacturers to achieve up to 50% longer life. The new charging methods would be easily for a ham to implement.”

Dan is a long time member of both OCRA and the DFMA.  He has also served as the OCRA Repeater Manger and OCRA Treasurer for many years.  In recent years he has been on the DFMA Board and is currently the DFMA Secretary.   Earlier this year Dan presented a program on the use of the antenna modelling program EZNEC.

Last Updated on Thursday, 01 October 2015 10:45
Jim Harp, WD4CEY, sk Print E-mail
Written by KU4GC   
Monday, 07 September 2015 14:04

Charlie, NC4CD, sent along the following obituary.  Jim was last a DFMA member in 2012 but moved to Southern Pines.

PINEHURST James Robert Harp. 71, of Southern Pines, NC, passed away on September 2, 2015, at his home in Southern Pines.
Jim was born on August 18, 1944, in Chickamauga. GA, to the late James and Gertrude Harp. Jim graduated from Lafayette High School and received his bachelor's degree from University of Georgia. He worked as a salesman for Lehigh Cement Company for over 30 years. He loved playing golf and spending time with family and friends.
Jim is survived by his wife of 48 years, Wendy Hollister Wheeler Harp, his son, Chris and wife Nanci; his granddaughter, Hollister; his sister, Zetta DeWeese; and his niece, Marilyn Novak.
Jim was preceded in death by his grand daughter, Nora Paige Harp.
A visitation will be held on Sunday, September 6, 2015, from 3 to 6 p.m. at Chris and Nanci's house located at 20 Kingswood Circle, Pinehurst. 
In lieu of flowers, memorial donations can be made in Jim’s memory to Moore Humane Society located at 5355 NC. Hwy 22, Carthage, NC 28327 or at www.moorehumane.org.
Boles Funeral Home of Southern Pines is serving the family.

Last Updated on Monday, 07 September 2015 14:19
Sep 1 Program: The Viper System and Police Work Print E-mail
Written by KD4YJZ   
Wednesday, 26 August 2015 09:16

The program for the September 1, 2015 DFMA monthly meeting is a presentation by Jonathan Daniel from the Orange County Sheriff's Office. His talk will include Community Police Work and the Viper Network. He will be discussing what will be going on in the future with this topic.
- Karen, KD4YJZ

Last Updated on Tuesday, 01 September 2015 21:48
RS-UV3 Kind-of techie YouTube video Print E-mail
Written by KZ1X   
Thursday, 20 August 2015 18:36

For those who are interested in the much-discussed HobbyPCB RS-UV3 tri band FM transceiver module, there is a recent video showing how the hardware is truly 'repeater grade.'

This demonstration represents remarkably good RF design engineering at this price point.

Nuance of the technical aspects may not be fully apparent to all, but most folks will quickly envision from this short video how well the RS-UV3 will perform in non-repeater applications.

Using a pair of RS-UV3 Radio Shields as a full duplex voice repeater

Steve, KZ1X

Last Updated on Thursday, 20 August 2015 18:49
Gene Beaver, W4PVI, sk Print E-mail
Written by ku4gc   
Thursday, 06 August 2015 13:50

Charlie, NC4CD, forwarded the following obituary for Gene, W4PVI, and noted  that he was a former DFMA member  The picture is from QRZ.com.  (Check out Gene's QRZ entry if you are curious about what he is driving.)

ALABAMA — Gene Whitmore Beaver, 86, of Summerdale, Alabama passed away Thursday, July 16, 2015, surrounded by loved ones.

Mr. Beaver was preceded in death by his daughter, Bonnie Lynn Beaver; his parents, Kermit and Elizabeth Thompson Beaver; and his wife's parents, Tyree and Blanche Jones.

He is survived by his wife of 62 years, Dorothy “Dottie;” daughter, Jeannie Martin and son-in-law,  Lloyd of Granbury, Texas; daughter, Terri Hanson and son-in-law Bob of Sandy, Utah; grandchildren, Eric, Taylor, Danielle, Zach and Bridget; brother, Kermit; sisters, Betsy Yarbrough and Beverly Smith-Petersen; and many other relatives and friends.

Gene loved his family. He served his country for 21 years in the United States Navy and continued his love of adventure for the remainder of his life: RVing to all 50 states, flying power parachutes and ultralights, off-roading, water skiing and competing in pickleball and pool.

A celebration of life memorial service will be held at the Marlow UMC on Wednesday, July 22, 2015, at 2 p.m. A burial service in Barrancas National Cemetery in Pensacola, Florida will be July 27, 2015 at 1:15 p.m.


Last Updated on Thursday, 20 August 2015 18:44

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