July 7, 2010:  Hey Mark, Good to see your article in Radio World this morning!  I thought I was the only one that ever had second harmonic problems.  (540 in Carmel Valley with 1080 in Santa Cruz, California).  Thank God we had a good engineer!  Jerry in Lake San Marcos, California.

July 6, 2010:  I enjoy working on transmitters when things make sense.  I learned how the Harris HT-5 FM Transmitter output connection was made with this most recent repair.  The manual was no help and Harris really wasn’t either.  Thanks for YOUR help.  It made all the difference!  Marv in Austin, MN.

July 1, 2010:  Hi Mark, great article in the last Radio World Magazine.  Interesting.  Steve from Winona, MN.

June 23, 2010:  I took the opportunity to peruse your Web site. I always find excellent Tech Tips there!  Thanks for an excellent resource.  I especially liked the AM noise/GMC van piece.  Del in Eau Claire, Wisconsin.

May 8, 2010:  Mark was the best dressed engineer at the NAB convention in Las Vegas!   Jim in Fosston, MN.

March 1, 2010:  Thanks for the information and information on Revox and tip the Mark.  Best regards, Paul

February 10, 2010:  Mark & Paula:  Thank you for the great Web site and for the equipment manual that you sent me.  You provided very fast service and I expected to get a reproduced manual, but you sent me an original in excellent condition.  I just purchased two 820E/F1 transmitters and the manual will be very important to me.  Jim KB1MIW in Newport, VT.

February 3, 2010:  Hello Paula & Mark:  I came across your website and really enjoyed the categories, especially the 'Thoughts' section.  It's nice knowing there are others who enjoy American accomplishments and technology.  Leland NC9K, Iron Belt, WI.

January 24, 2010:  Hi: I was just looking around the Internet looking for large variable capacitors for a link-coupled tuner and I found you Web page.  It is the nicest web page I have ever seen!  Very nice!  I have spent some time exploring and learning.   John in New London, MN.

January 13, 2010:  Mark, you helped me to no end in repairing my ReVox A-77 Tape Recorder.  You are a wealth of information and a wealth of hard to get parts.  Thanks for being there.  Jacob from Sylvan Lake, MI.

January 1, 2010:  You are a good man and you have a nice Web site.  Ed from Scarsdale, NY.

September 1, 2009:  I love the cow story.  Maynard from Madison, MN.

August 24, 2009:  From M. W. Persons to customer:  The Moseley PCL-606 STL receiver problem turned out to be a bad variable capacitor in the first oscillator module.  I have seen this before so I replaced all three capacitors like that in the module.  Good thing you sent the transmitter here too as it was off frequency a bit.  All is well now and the system should ship from here on Monday.  Customer: I don't call you "The Wizard" for nothing!  Bill in Rochester, MN.

July 13, 2009: Sent the cow story around to radio station employees -- thought you'd like to know we think you're udderly amazing!  Chris Grams, Manager of WYRQ Radio. 

April 15, 2009:  Hey Mark, got the Harris HT-10FM Transmitter up and running yesterday with the modules you repaired.  Works great.  Thanks for all your help.  Keith in Marshall, MN.

April 8, 2009: It's a cool site.  Rita from New Mexico.

February 1, 2009:  I bought a Zercom Max-Z Remote Broadcast Telephone around 1989, and absolutely loved it.  If the unit were a car, I would have "driven" it the equivalent of about 300,000 miles.  Minor league sports can be incredibly tough on equipment, and both the Max and the Max-ZII have been outstanding.   Used the Max-ZII for an entire hockey season a year or so ago, and that's brutal stuff, with set up and tear down before and after every game.  Despite needing repair, I've had the units now for 10 years, most of that time doing two sports (70 or so hockey games and 140 baseball games per year).  It's been remarkably good.  Thanks again!  Bob in Oakland California.

December 30, 2008:  Thank you folks for the fast service and careful packing of the RCA modulation monitor.  It arrived right on time and is already in service.  I'm very pleased.  Thanks again.  Howard in Spokane Valley, Washington State.

November 23, 2008: Saw your Web site including the WPPI project. Looks like a first class install.  Fabulous site.  David in Ely, MN.

August 27, 2008:  Just wanted to thank you for the great website information and pictures of WPPI Radio and also the original WVAL Radio ITA transmitter.  Drew in Apple Valley, MN.

May 5, 2008:  Hi Mark,  Thanks for the "heads up" on the honey-comb filter.  I'll make sure to hit that on my upcoming tube change.  Extending the shaft on the PA bias control was pretty slick, along with how you implemented the overload relays. David Halperin at El Paso, TX. (RE: http://mwpersons.com/tech-tips/FM/Continental-updates.htm)

March 10, 2008:  Mark, thanks for your info on hooking up the phone/amplifier!  That was just what I was looking for!  Royce.

March 7, 2008:  Great site, my complements. I shall return.  Larry Toombs.

February 26, 2008:  By the way, nice website.  I've been reading it on and off all morning (slow day at the insurance factory).  Have to take a break, it's stirring up the broadcaster in me.  George Brand in Grayling, MI.  Ham call WA8SCO.

March 8, 2007:  I like your website. It contains a lot of information.  Kind regards, Dennis in Holland.

January 31, 2007:  "Thanks Paula. I got the box today from UPS, just in time to replace the missing power supply and knob on the used Zercom Max-Z unit. I sent it out with our second team for a girls basketball broadcast. It's working fine.  I'm glad you are still providing service and support for the Max-Z's as they are still the best thing out there for those of us who are on a budget and can't afford the new codec systems."

We are Southwestern Ohio Public Radio (WSWO-LP 97.7).  Being an LPFM on a thin budget, I don't see us going to Comrex units anytime soon, so we are doing our sports via cell phone or land lines using the Max-Z.  They are easy for our volunteer announcers to set up and operate even though they may not be very familiar with broadcast technology.  Zack Riepenhoff.

November 16, 2006:  I love your website. You seem like nice folks.  Richard Dalbec

August 23, 2006:  Your web site, by the way, is very well done.  My compliments.  73,  Ken K4SVX.

July 28, 2006: Your website is very professional and user friendly.  73 de Chuck Milton W4MIL  Palm Coast, FL.

April 10, 2006: I like your website!!!  Steve Gretsch KLFD Radio in Litchfield, MN.  http://klfd1410.com

October 9, 2005:  Mark and Paula, not quite sure how I found your website, but the past 45 minutes have been a treat...what a wonderful pictorial recognition of your many wonderful and loyal customers.  Congrats on your new home. It's obvious...it's a center point of your lives.  May our paths cross sometime soon...would love to tell a few stories, and hear a lot more.  Dean Sorenson.

March 28, 2005:  I looked up your web site.  Very impressive.  Say hi to Josie the cat for me!  Phil Hayden, Minneapolis, MN.