Dan Sessler
Sept 29, 1945 – Aug 5, 2020

It is with our deepest sorrow that we share with you the passing of our friend and supporter, Dan Sessler.

A private service will be held graveside with his immediate family.

John Daniel Sessler, (well known as Dan) was born September 29, 1945 to Herbert Lewis and Nettie Vivian (King) Sessler in Beckley, West Virginia. He graduated from Beckley College with an Associate’s Degree.

Dan became the chief engineer and GM of a local AM/FM radio station. He later became the transmitter supervisor of the local educational TV station. He then started a company called Professional Electronics. After resolving the company he co-owned the AM/FM station WCIR. From there Dan accepted a major sales position for the nationally recognized company Harris Corporation where he traveled with great expertise in the broadcast industry. Upon retiring from Harris Corporation in 2009 he continued his love for the Radio/TV business by purchasing RF Specialties of Texas.

Dan was a 40 year member of the National Association of Broadcasters, Southern Broadcast Engineers and Texas Association of Broadcasters. During his continued pursuit of his career working for his business, RF Specialties of Texas, he gained much political interest in local politics as a member of his local city council.

Dan, a highly respected broadcast engineer enjoyed over 45 years doing what he loved most acquiring many exceptional awards being recognized nationally.

In his free time, Dan enjoyed an array of hobbies: being a private pilot, scuba diving, photography, HAMM radio operating, electronics, snow skiing, family genealogy and learning history.

Dan was united in marriage September 17, 1982 to Cindy Smith in Beckley. He was preceded in death by his parents, Herbert and Nettie Sessler.

Those left behind to cherish his memory are his wife of 38 years, Cindy Sessler of Rhome; his daughters, Jonette Danielle Phegley and husband Brian of Fort Worth, and Jelayne Michelle Sessler of Rhome; his son, John Daniel “J.D.” Sessler II of Rhome; his granddaughters, Addison Danielle Phegley and Chandler Elizabeth Phegley of Fort Worth; his grandson, West Alexander Phegley of Fort Worth; his sisters, Patty J. Priddy and Mary Lou Short; numerous nieces, nephews, and a host of friends.

 The family respectfully ask that if you wish to send cards that you please send them to the office and they will be passed along to her and her family per their request. That address is

RF Specialties of TX

PO BOX 1010

Newark, TX 76071

We appreciate your thoughts and prayers for the family during this difficult time. 


You are invited to attend our August SBE Chapter 56 Meeting! 


Broadcast Measurement and Analysis

You are invited to attend the next SBE Chapter 56 meeting on  Wednesday, August 26 at 12:00 Noon.  The meeting will be held virtually using the Zoom Conference Application.  The discussion will be hosted by Spencer Slack with Copper Mountain Technologies. 

Copper Mountain Technologies develops innovative RF test and measurement solutions for engineers worldwide. Their development and production teams create solutions that enable RF and Microwave engineers to extend their reach through access to Test and Measurement gear  at affordable prices.  Copper Mountain Technologies is based in Indianapolis, IN, with sales offices in Singapore, London, and Miami.

Spencer Slack joined the Copper Mountain Technologies team in October of 2019 as the South Central US territory Sales Manager. Spencer has over 27 years of experience in metrology based service and hardware industries. He started his career spending 6 years in the United States Air Force as a PMEL (precision measurement equipment laboratory) technician. Spencer gained a wealth of calibration experience in many disciplines to include DC low frequency, RF microwave, physical dimensional linear measurements, radiation detection devices, temperature, pressure, torque, and jet engine test cell calibrations for F15, F16 and C130 aircraft. After being honorably discharged from the Air Force in 1997 Spencer went on to work for a number of 3rd party calibration labs and metrology self-maintainers in the south central US and those include Davis/Inotek, GE Instrument services division, BBA aviation/Dallas Airmotive and EVANS Analytical Group which was responsible for all the calibration at all US Freescale/Motorola sites in the US .

It was at EAG that Spencer discovered his passion for sales and began to sell calibration service contracts and move out of the calibration laboratory. Spencer then went on to very successful sales careers for companies like Alltite as a national sales manager selling service contracts and hardware into the high torque and bolting markets, Spencer then went to work for Mensor who is an industry leading manufacturer in metrology grade pressure instrumentation. Spencer was the west coast regional sales manager at Mensor and managed a group of 4 rep companies and 2 distribution partners. Spencer moved on from Mensor to go to work at Keysight Technologies as the south central US services sales manager before finally getting to Copper Mountain Technologies family in October of 2019.

Spencer grew up in Dallas TX and now has a home based office in Wimberley TX right between Austin and San Antonio. He enjoys spending as much time as possible with his beautiful family, and he and his family are active in the local church and community. Spencer is an avid fan of just about every sport known to man and he enjoys playing golf and fishing if and when he has any free time at all.

SBE members, guests and other interested industry professionals are invited to attend.

We hope you can join us!




SBE Chapter 56 Officers

Don Dobbs – Chapter Chairman
Jim Mertins – Vice Chairman
Brett Gilbert – Secretary
Richard Hardy – Treasurer