Bench Repairs:

 

MP&A has a workbench with a comprehensive set of audio and RF test and measurement equipment at hand, plus an extensive inventory of ICs, transistors, passive components, and special hardware needed to repair, retune, align, and calibrate many types of broadcast equipment. STLs, RPUs, remote controls, audio processing, even audio consoles can be made as good as new in our facility. We repair most manufacturers' equipment, including Moseley, TFT, Marti, QEI, Inovonics, Orban, CRL, Burk, Gentner, and many others. We can usually beat the manufacturer's prices and turnaround times, plus we give each piece of equipment that passes through our shop our close personal attention.

 

Our favorite types of gear to repair:

Although we repair many types of broadcast equipment, we consider ourselves experts with several particular pieces of gear.  These include (but aren't limited to):

  • Potomac AM-19 antenna monitors.  MP&A probably repairs more of these than any other single type of gear.  We have developed several retrofit parts for these units, including replacements for the original mercury-wetted reed relays, updated power supply capacitor kits which use modern capacitor types, LED indicator lamp replacements, and replacements for the original termination resistors, which are no longer available from Potomac.  We stock a complete set of parts for these monitors.
  • Harris MW-1, MW-5, MW-10, SX-1, SX-2.5 & SX-5 transmitters.  We maintain a complete MW-1 transmitter in stock in working condition as a test bed, plus a large stock of replacement modules and parts for these units, including many hard-to-find ICs and transistors.  We have selected and tested upgraded transistor types--much more robust than the originals--for use on MW-1 RF/PA modules, and can rebuild/upgrade any MW-series transmitter module and most of those from an SX-series unit in our shop quickly and reliably.
  • Orban audio processing units: We rebuild a number of Optimod audio processors every year, and stock hard-to-find ICs and many other parts for most Orban gear.  Our firm is one of only three firms listed on the Orban website as having the factory's blessing to repair and rebuild their older gear.
  • FM RF power amplifier "bricks".  MP&A has a complete test setup for these 250-1000W units, including a frequency-agile exciter to generate drive, 12V, 28V, and 48V high-current power supplies, and several large dummy loads.  We can repair units made by MMD, Delta, SVPA, Continental, BE and others.  In fact, MP&A can repair just about any older unit whose RF devices are still available, or we can often update your brick to use modern "pallet amplifier" modules, available off-the-shelf.


Those are just our favorites.  In addition, we repair many types of gear:

  • STL transmitters & receivers
  • Remote pickup units
  • FM exciters & transmitters
  • AM & FM solid-state RF power amplifiers & modules
  • AM & FM modulation monitors
  • AM, FM, TV, and recording studio audio processing, analog and digital
  • Transmitter remote control equipment
  • Telephone hybrids
  • Audio consoles
  • Many other types of gear, too: if you can ship it to us, we can almost certainly fix it!

 

Partial list of gear on our workbench:

  • Audio Precision Portable One Dual Domain analog/didigtal audio test set
  • HP 54111D 1 GHz digital oscilloscope
  • HP 3455 6-digit multimeter
  • HP 3336 precision frequency synthesizer
  • HP 8901B modulation analyzer
  • HP 8754B network analyzer
  • Anritsu MS420B network/spectrum analyzer
  • Racal-Dana 1992 3 GHz precision frequency counter
  • Tektronix 492P spectrum analyzer w/tracking generator
  • Tektronix DA4084 audio distortion analyzer
  • Tektronix PS-280 triple power supply
  • Motorola R2200B communications service monitor
  • Wavetek 288 synthesized function generator

 

As you can see, we have a diverse set of first-class test gear--enough to ferret out just about any failure in any piece of broadcast equipment. Let us use all this cool gear to put your gear back in first-class shape. Call for a quote--we have fixed prices for most common types of gear, so repairing your blown equipment won't "blow" your budget, too.  The extremely difficult we do routinely; the impossible just takes a bit longer, is all.