May 8, 2013:
More FM Exciters in the Shop for Repair
May 4, 2013:
in Superior, Wisconsin
April 25, 2013:
Combiner Configured and Tuned
April 17, 2013:
Listener Reports from Norway and Finland
April 10, 2013:
World Article on FM Exciter Repairs
April 1, 2013:
March 26, 2013:
On/Off Swiches for a Continental FM Transmitter
March 7, 2013:
Manual Audio Switchers
February 14, 2013:
20 Watt AM Transmitter Repaired and Modified
January 16, 2013:
Scope Is a Tool for All Seasons" Article Published in Radio World
December 31, 2012:
Year End Review
December 29, 2012:
New Telephone Interface for Digital and IP Phones
December 27, 2012:
New RF Amplifier for Continental 802A FM Exciter
December 13, 2012:
Andy Bursaw has a New Job
December 5, 2012:
Del Dayton stopped by
November 21, 2012:
Avoid Hall of Shame article Published in Radio World
October 11, 2012:
Mark appeared on Internet Television...Again!
October 10, 2012:
Installing Connectors article Published in Radio World
October 9-11, 2012:
Wisconsin Broadcasters' Clinic
October 2, 2012:
Dan Zimmerman stopped by at M. W. Persons
September 6, 2012:
Visiting Roger Utnehmer at WBDK Radio
August 28, 2012:
Three Continental Exciters in the Shop
August 27, 2012:
Continental 802A&B RF Amplifier Upgrade
August 20, 2012:
Hum and Buzz in STL Preamplifier
August 17, 2012:
Silicon Valley 500 Watt RF Amplifier Repair
August 10 & 12, 2012:
Visiting Clients in Southern Minnesota
August 1, 2012:
Continental IPA Modified
July 26, 2012:
Visit to the WHBY AM
July 20, 2012:
Building Cooling article Published in Radio World
July 20, 2012:
Rick Keefer picked up a Rebuilt Transmitter
July 11, 2012:
SST-30 FM Exciter Repair
July 10, 2012:
Old Stock Tubes
June 21, 2012:
Dinner with Jim
Zastrow and an SBE Meeting
June 20, 2012:
Keep That Transmitter Building Cool article
published in Radio World Magazine
May 30, 2012:
FM Transmitter picked up for
May 26, 2012:
Watt RF Preamplifier Updated
May 9, 2012:
Where Have All the Engineers Gone? article
published in Radio World Magazine
May 7, 2012:
Frequency agility made
easier on a CCA FM Exciter
May 5, 2012:
Duluth, Minnesota, Hamfest
May 3, 2012:
Electronics AM5E transmitter cooling system improvement.
April 28, 2012:
Harris MW-1A PA
module repair page updated.
April 24, 2012:
FM exciter from Hong
Kong repaired here.
April 23, 2012:
replaced in Broadcast Electronics FX-30 FM Exciter.
April 13-20, 2012:
attended the National Association of Broadcasters annual convention in Las
April 12, 2012:
Mark celebrated his
65th birthday, but is still a working guy.
April 1, 2012:
Cycles per Second to Hertz Conversion explained.
March 16, 2012:
Just unpacked an FM exciter from a station in Florida. Then
four more exciters arrived from a client in California. That makes five
waiting for repair bench time.
March 14, 2012:
Living Through Tower Welding"
article published in Radio World Magazine.
February 25, 2012:
Offerdahl paid a visit bringing equipment for repair
February 23, 2012:
Engineer Marv Olson stopped in to visit
February 22, 2012:
stopped by to pick up uninterruptible power supplies
February 16, 2012:
WMIN 1010 AM Sauk Rapids, MN, heard in Finland
February 8, 2012:
A visit from Steve and Barb Gretsch
February 1, 2012: "FM
Exciter Modifications and Repairs" article published in Radio World Magazine.
January 23, 2012: New devices for remote broadcast telephones via cellular.
Tips section of Max-ZII page
December 12, 2011: Christmas
November 1, 2011: Long distance radio reception reports for
KQDS from a
listener in Finland.
October 19, 2011: "Rebuild
That Relic of an AM Transmitter" article published in Radio World Magazine.
October 17, 2011: John and Nina Heltemes visit from Faribault,
October 6, 2011: Doug Thompson, radio broadcast
engineer, stopped by to visit.
October 5, 2011: "Hey,
What's his at 1300 KHz?" article published in Radio World Magazine.
September 27, 2011: Dan
Hatfield of WJRF Radio stopped by to visit.
September 1, 2011: "How
Did That Wireless Tower Get There?" article published in Radio World
3, 2011: Mark is interviewed again at TWIT TV.
August 1, 2011: Change of Business
July 11, 2011: KEYL Radio gets
a new transmitter.
June 25, 2011: 540 WXYG Radio
officially goes on the air.
June 19, 2011: Repairs and
updates to a Harris MX-15 FM Exciter.
June 15, 2011: "A
Mod Solves Transmitter Troubles" article published in Radio World
June 3, 2011: More
custom-built equipment shipping from M. W. Persons.
May 19, 2011: Visit to KLOH
Radio in Pipestone, Minnesota.
May 13, 2011: A Water Tower
With No Adverse Effect article in Radio World.
May 13, 2011: Visit to KLQP
Radio in Madison, Minnesota.
May 7, 2011: Hamfest in
May 4, 2011: New 25 KW FM
transmitter installed at KBOT Radio.
April 1, 2011: Negative
March 23, 2011: All-Station
Audio Take-Over article published in Radio World
23, 2011: Mark interview on TWiT Television
March 14, 2011: Tower vs. Tower article published in Radio World
March 3, 2011: New studio room at KJOE Radio.
February 9, 2011: Listener reports from Europe of
local AM stations
January 26, 2011: Interview on TWiT Television
January 12, 2011: What's in YOUR Toolbox article in Radio World
January 4, 2011: Tower light replacement in winter
December 31, 2010: Year end review
December 1, 2010: Blower motor replacement
December 1, 2010: He's the Man in the Van article in Radio World
October 26-28, 2010: Broadcasters Clinic in Madison, WI.
October 15, 2010: Power generator maintenance article in Radio
September 24, 2010: New transmitter at KBUN Radio.
September 21, 2010: High voltage transformer repair.
September 16, 2010: Continuing
September 8, 2010: Tyranny of Power article in Radio World.
August 23, 2010: New transmitter installed at WBHR Radio.
August 21, 2010: Chris Serani stopped by.
August 9, 2010: New
transmitter installed at KLTF Radio.
July 16, 2010: Boyd
Bremner retired from KKIN Radio.
July 1, 2010: 1900 MHz
Interference article written for Radio World Magazine.
May 21, 2010: Midwest
Radio in Green Bay, WI.
April 10-15, 2010: NAB Convention.
March 29, 2010: WXYG Radio
January 25, 2010: CCA FM Transmitter trouble.
January 22, 2010: Allen
January 22, 2010: Jon and Joan Larson visit.
January 18, 2010: A Nautel AM transmitter to work on.
January 8, 2010: Snow in Minnesota.
December 22, 2009: Visit from Shane Toven.
December 21, 2009: A Gates BC-1G Transmitter to retune.
December 17, 2009: Tour of Hughes Technologies.
November 20, 2009: Pass/reject filter for WJON Radio.
November 19, 2009: Michael Bovey stopped by.
November 10, 2009: Emergency replacement of a power transformer.
October 31, 2009: Stu and Jane Muck came to visit.
October 2, 2009: Jim
September 21, 2009: Garrett
Wollman stopped by.
August 31, 2009: Engine
noise in GMC van radio.
August 21, 2009: KNSP
Radio gets a new transmitter.
July 20, 2009: A
Collins 820E-1A Transmitter work on.
July 7, 2009: RF
June 21, 2009: HD
June 13, 2009: Vietnam
21, 2009: RF
radiation and SBE meeting.
May 7, 2009: Arbitron
April 1, 2009: April Fools Stories.
January 29, 2009: KYCK in Crookston, MN,
gets a new main transmitter.
January 20, 2009: Talked to SBE Chapter 17 about spectrum analyzers.
December 29, 2008: Transmitter retuned and installed at KMSU.
December 19, 2008: KFAI in Minneapolis, MN, goes IBOC.
December 9, 2008: WPPI is now WMIN Radio and on the air.
December 5, 2008: New spectrum
analyzer added to test equipment list.
June 7, 2008: Visit with Clif Groth in Madison, WI.
April 29, 2008: Coil Crushed in Detuning Network.
February 8, 2008: Tour of Broadcast Electronics
in Quincy, IL.
February 5, 2008: HD
Radio Class in Quincy, IL.
September 14, 2007: FMeXtra
tested at WHMH Radio in Sauk Rapids, MN.
September 5, 2007:
Detuning another AM re-radiator.
March 9, 2007: FM Antenna repaired at KSUM.
December 14, 2007: New
Station built at Blackduck, MN.
15, 2007: Relay Box for satellite receivers.
September 7, 2006: New Tech-Tips
section on this Web site.
August 8, 2006: Newly revised and
expanded Used Equipment section on this Web site.
April 29, 2006: Mark spoke before
the Minnesota News Network.
Paula is interviewed for Her Voice Magazine
2005: A limited quantity of new Zercom Broadcast Products
has become available.
2005: New 1 KW AM RF Switch.
2005: Mark gave a speech to the Lakes
Country Computer Club.
2004: Now in stock, a large selection of new and used
oil-filled capacitors, dummy loads, and RF switches.
February 24, 2004: New Deluxe EAS
Multi-Station Relay Panel. Details
November 17, 2003: Wind
generator tower detuning project at KLOH Radio in Pipestone, MN.
2003: Mohawk Military Reunion
January 10, 2003:
Water tower detuning project at KBUN Radio in Bemidji, MN.
Rhythm of the Rails "Old Tyme Radio Hour."
September 11, 2002:
AM Expanded Band article in Radio World Magazine written by Mark Persons
May 8, 2002: FM antenna article in Radio
World Magazine written by Mark Persons
Beta testing of Windows XP. Details
Radio World article by Mark Persons.
June 13, 2001:
A tornado takes down tower at Brainerd and knocks out
power to the city for 25 1/2 hours.
May, 2001, Mark Persons became a Certified Broadcast Networking
Technologist with the Society of
Broadcast Engineers. He is qualified and certified to plan, build,
modify, and maintain computer networking systems.
March 12, 2001: New Minnesota Contractor
Radio Systems now available from M. W. Persons and Associates.
2000: KQWB-AM Changes
A bit of ancient