M. W. Persons and Associates, Inc.

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Radio Broadcast Technical Consulting and Sales
10032 Island Drive, Brainerd, MN  56401

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Back to Used (Experienced) Equipment

If you have a question, e-mail us.

 Quantity
Available
DC Ammeter Analog Meter Movements Price
 Each
1 Burlington Model 741 DC meter.  Part number 55972 3.  F.S.=1 MA.  4-1/4" wide x 4" high.  Needs 2-3/4" or larger hole in the panel it will mount on.  Used, but in good condition.  Needs some cleanup to restore it to its original glory.  Photo $30.00
1 Emico 0-500 m.a. DC  meter.  1-15/16" wide x 13" high.  Needs 1-13/16" x 3/4" hole in a panel it will mount on.   New and in good condition.  Photo $20.00
1 Hoyt 0-1 DC Amperes meter.  4-1/2" wide x 4" high.  Needs 2-13/16" or larger hole in the panel it will mount on.  Often found in Elcom Bauer transmitters.  Used, but it good operating condition.  Photo of similar meter. $30.00
1 Hoyt 0-1.5 DC Amperes meter.  4-1/2" wide x 4" high.  Needs 2-13/16" or larger hole in the panel it will mount on.  Often found in Elcom Bauer transmitters.  Used, but it good operating condition.  Photo  $30.00
1 Hoyt 0-6 DC Amperes meter.  4-1/2" wide x 4" high.  Needs 2-13/16" or larger hole in the panel it will mount on.  Often found in Elcom Bauer transmitters.  Used, but it good operating condition.  Photo of similar meter. $30.00
1 International -50 to 0 to +50 u.a. DC meter  Needs 1-1/2" hole for panel mounting.   Used, but in good operating condition.  Photo $30.00
1 Modutec 0 - 1 m.a. DC meter  Has 0 - 1 Antenna Amperes scale.  Needs 2-5/8"" hole for panel mounting.  3-3/4" wide x 2-7/8" high.  Used, but in good operating condition. $20.00
1 Modutec 0 - 10 m.a. DC meter  Needs 2-5/8"" hole for panel mounting.  3-3/4" wide x 2-7/8" high.  Used, but in good operating condition. $20.00
1 Simpson Model 29.  0-1.0 DC Amperes.  Often used in Gates BC-1 series of AM transmitters.  10 m.a. full scale.  Needs an external shunt, not supplied, to read correctly.  3-1/4" wide x 3-1/4" high.  Needs 2-3/4" or larger hole for panel mounting.   Used, but it good operating condition.  Photo $40.00
1 Simpson SK525-447-3  05777.  0-200 DC Microampere meter. 4-1/2" wide x 2-7/8" high.  Needs 2-1/8" or larger hole for panel mounting.   Used, but it very good condition.  Photo of similar unit $30.00
1 Simpson SK525-447-3  3-705337.  0-1 DC Milliampere meter. 4-1/2" wide x 2-7/8" high.  Needs 2-1/8" or larger hole for panel mounting.   Used, but it very good condition.  Photo $30.00
1 RCA 29772 0-3 amperes DC.  Black face and housing and RCA logo on front.  Used in RCA transmitters.  4" wide x 4-1/8" high.  Needs 3-3/4" or larger hole in the panel it will mount on.  Used, but it good operating condition.  Photo $40.00
2 RCA Dwg 990152-155/TBS GX-372 0-5 DC Amperes.  Analog meter with black face, commonly used in RCA transmitters.  4-7/16" wide x 4" high.  Needs 2-11/16" or larger hole in the panel it will mount on.  Used, but it good operating condition.  Photo of similar meter $40.00
1 Weston 1941 DC 0-800 MA.  Analog meter with black face, commonly used in RCA transmitters.  4-7/16" wide x 4" high.  Needs 2-11/16" or larger hole in the panel it will mount on.  Used, but it good operating condition.  Photo $40.00
3 Weston 1941 0-2 DC Amperes.  Analog meter with black face, commonly used in RCA transmitters.  4-7/16" wide x 4" high.  Needs 2-11/16" or larger hole in the panel it will mount on.  Used, but it good operating condition.  Photo $40.00
 Quantity
Available
DC Voltmeter Analog Meter Movements Price
 Each
1 Hoyt 0-10 Kilovolts DC meter.  4-1/2" wide x 4" high.  Needs 2-13/16" or larger hole in the panel it will mount on.  Often found in Elcom Bauer transmitters.  Used, but it good operating condition.  Photo of similar meter.  0-1 m.a. movement.  An external meter multiplier, not supplied, is needed to make it read correctly. $30.00
1 Modutec meter with 0 to 10 KV DC scale.  3-5/8" x 2-7/8".  Needs a 2-5/8" hole to mount in.  0-1 m.a. full scale.  Used, but it good operating condition.  $25.00
1 Sparta/Elcom-Bauer 0-5 KVDC meter.  Must use an external multiplier, not supplied. $30.00
1 Weston 1941 0-3 KV.  FS = 1MA.  Analog meter with black face, commonly used in RCA transmitters.  4-7/16" wide x 4" high.  Needs 2-11/16" or larger hole in the panel it will mount on.  An external meter multiplier, not supplied, is needed to make it read correctly.  Used, but it good operating condition.  Photo of similar meter $40.00
4 Weston 1941 0-8 KV.  FS = 1MA.  Analog meter with black face, commonly used in RCA transmitters.  4-7/16" wide x 4" high.  Needs 2-11/16" or larger hole in the panel it will mount on.  An external meter multiplier, not supplied, is needed to make it read correctly.  Used, but it good operating condition.  Photo of similar meter $40.00
 Quantity
Available
Miscellaneous Analog Meter Movements Price
 Each
1 Burlington Model 741 DC meter.  Part number 55972 3.  F.S.=1 MA.  4-1/4" wide x 4" high.  Needs 2-3/4" or larger hole in the panel it will mount on.  Used, but in good condition.  Needs some cleanup to restore it to its original glory.  Photo $30.00
1 Emico Signal Level meter with a 0-10 scale.  0-1 m.a. DC movement.  1-15/16" wide x 13" high.  Needs 1-13/16" x 3/4" hole in a panel it will mount on.   New and in good condition.  Photo of similar meter. $20.00
1 Hoyt 0-5 and 0-25 multi-meter.  4-1/2" wide x 4" high.  Needs 2-13/16" or larger hole in the panel it will mount on.  Often found in Elcom Bauer transmitters.  Used, but it good operating condition.  Photo of similar meter.  0-1 m.a. movement. $30.00
1 Hoyt 0-100 meter.  4-1/2" wide x 4" high.  Needs 2-13/16" or larger hole in the panel it will mount on.  Often found in Elcom Bauer transmitters.  Used, but it good operating condition.  Photo of similar meter.  0-1 m.a. movement. $30.00
1 Hoyt Standing Wave Ratio meter.  4-1/2" wide x 4" high.  Needs 2-13/16" or larger hole in the panel it will mount on.  Often found in Elcom Bauer transmitters.  Used, but it good operating condition.  Photo of similar meter.  0-125% Power on one scale and 1-50 SWR on the other scale.  This is a DC meter movement. $30.00
1 Hoyt 2026/D-5481 0-300 Volts AC meter.  2-3/4" wide x 2-3/8" high.  Needs 2-1/8" or larger hole in the panel it will mount on.  Often found in Elcom Bauer transmitters.  Used, but it good operating condition.  Photo of similar, but larger, meter.   $25.00
1 JBT Instruments 34-F Frequency Meter. Reads 55 to 65 Hz via vibrating reeds.  Runs on 100 to 150 VAC.  3-1/4" round.  Needs 2-11/16" or larger hole for panel mounting.   Used, but in good operating condition.  Photo $35.00
1 Potomac Instruments analog meter, phase angle, for a Potomac AM-19 AM Antenna Monitor.  Dwg. no. B-20061.  100ua DC.  Good working condition.  $75.00
1 Potomac Instruments analog meter, loop current, for a Potomac AM-19 AM Antenna Monitor.  Dwg. no. B-1001-2.  100ua DC.  The movement is in good working condition, but the plastic front glass is fogged. $25.00
4 Potomac Instruments metal bezels for panel mounting the above Potomac analog or digital phase and loop meters. $15.00
2 RCA Dwg 993064-7 0-130% Power with VSWR scale.  FS = 20 u.a.  Analog meter with black face, commonly used in RCA transmitters.  4-7/16" wide x 4" high.  Needs 2-11/16" or larger hole in the panel it will mount on.  Used, but it good operating condition.  Photo of similar meter $40.00
1 RCA Dwg 993064-5 Multimeter.  0-30, 0-100, and 0-300 scales.  FS = 1 VDC.  Analog meter with black face, commonly used in RCA transmitters.  4-7/16" wide x 4" high.  Needs 2-13/16" or larger hole in the panel it will mount on.  Used, but it good operating condition.  Photo of similar meter $40.00
2 Weston 1936T 0-130% Power with VSWR scale.  FS = 20 u.a.  Analog meter with black face, commonly used in RCA transmitters.  3-1/2" wide x 2-7/8" high.  Needs 2-11/16" or larger hole in the panel it will mount on.  Photo $40.00
4 Weston 1946 0-130% Power with VSWR scale.  FS = 20 u.a.  Analog meter with black face, commonly used in RCA transmitters.  4-7/16" wide x 4" high.  Needs 2-11/16" or larger hole in the panel it will mount on.    Used, but it good operating condition.  Photo of similar meter $40.00
 Quantity
Available
Modulation Meter Movements Price
 Each
1 Modutec Percent Modulation meter movement typically used in a Harris MX-15 or MS-15 FM Exciter.  Harris part number 632-0962-000.  3" wide x 2-1/4" high.  Needs 2-1/8" or larger hole for panel mounting.  This is a DC movement with 1 m.a. full scale.    New, but has a "% UV Absorption" scale.  In order to use it in a Harris exciter, remove the meter scale from a defective meter and put that scale on this meter.   $145.00
1 Triplett 420-G 0-133% analog Modulation meter.  4-1/2" wide x 4" high.  Needs 2-3/4" or larger hole in the panel it will mount on.  Used, but it good operating condition.  Photo  Bezel not included.  It is $10.00 extra. $40.00
1 Weston 2041  0-133% Modulation meter.  FS = 1 MA DC.  4-1/2" wide x 4" high.  Needs 2-3/4" or larger hole in the panel it will mount on.  Photo $40.00
 Quantity
Available
Audio VU (Volume Unit) Meter Movements Price
 Each
1 Ideal Precision Meter Company Model 325P VU meter. Also known as a Soundolier 65-92009.  -20 to +3 dB on the top scale and 0-100% on the bottom scale.  Comes complete with an internal bridge rectifier to connect to an audio line.  3-7/16" wide x 2-15/16" high.  Needs 2-11/16" or larger hole for panel mounting.   New/unused in the original box.  Photo $40.00
2 Modutec VU meter. -20 to +3 on top scale and 0-100 on bottom scale.  2-1/4" wide x 1-3/4" high.  Needs 1-1/2" hole for panel mounting and has four mounting bolts.  Used, but it good operating condition.  Photo of front    Photo of rear  One meter has a white background and the other has a tan/yellow background on the scale.  The white one omes complete with a bridge rectifier for metering an audio line.  The tan/yellow one is a 200 u.a. DC movement and does not have a rectifier.  Specify which one at the time of sale. $30.00
1 Mura PM-705  VU meter.  -20 to +3 dB on the top scale and 0-100% on the bottom scale.  Comes complete with a bridge rectifier to connect to an audio line.  3-5/16" wide x 2-3/8" high.  Needs 1-5/16" or larger hole for panel mounting.   Used, but it good operating condition..  Photo $30.00
. Quantity
Available

FM Wattmeters and Line Sections  

.Price
 Each
2 Bendix 518.079 Directional Coupler for 5 Watts VHF.  Can be adjusted for higher or lower power levels.  Has two BNC connectors and two 1N21 diodes.  Has forward and reflected DC outputs to go to DC meters, not supplied.  Leads on metering outputs are 12" or more long.  Used, but in good condition. $30.00
2 Bendix 518.080 Directional Coupler for 10 Watts VHF.  Can be adjusted for higher or lower power levels.  Has two BNC connectors and two 1N21 diodes.  Has forward and reflected DC outputs to go to DC meters, not supplied.  Leads on metering outputs are 12" or more long.  Used, but in good condition. $30.00
2 Bird model 48/RCA MI-19196 L/H  0-.35 KW & 0-1.5 KW Meter in case for wattmeter system.  Has 100 ua meter movement.  Photo of a very similar meter Used, but in good condition. $100.00
1 Bird model 48/RCA MI-27396 L/H  0-10 KW Meter in case for wattmeter system.  Has 100 ua meter movement.  Photo of a very similar meter  Used, but in good condition. $100.00
1 Bird model 48/RCA MI-19193 L/H  0-25 KW Meter in case for wattmeter system.  Has 100 ua meter movement.  Photo of this meter  Used, but in good condition. $100.00
1 Bird 5 Watt element 100 - 250 MHz.  Used, but in good condition. $40.00
1 Bird 100 Watt element 400 - 1000 MHz.  Used, but in good condition. $40.00
1 Bird 1.5 KW element 108-216 MHz.  Used, but in good condition. $50.00
1 Bird 7.5 KW element (5000B1) 54-108 MHz.  Used, but in good condition. $60.00
1 Bird 7.5 KW element 108-216 MHz.  Used, but in good condition. $50.00
1 Coaxial Dynamics 82314 10 KW element  Used, but in good condition. $50.00
1 CCA Forward/Reflected (directional Coupler) meter sample line section with sockets for 1N21B detector diodes.  3-1/8" EIA input and output connections with one captured inner connector and RF-58/U coaxial cable sample lines.  Same as used on Harris FM transmitters.  Used, but in good condition. $250.00
2 CMC Connecticut Microwave Corporation 210021 Directional Coupler for 5 Watts VHF.  Can be adjusted for higher or lower power levels.  Has two BNC connectors and two 1N21 diodes.  Has forward and reflected DC outputs to go to DC meters, not supplied.  Leads on metering outputs are 12" or more long.  Used, but in good condition. $30.00
2 CMC Connecticut Microwave Corporation 210022 Directional Coupler for 10 Watts VHF.  Can be adjusted for higher or lower power levels.  Has two BNC connectors and two 1N21 diodes.  Has forward and reflected DC outputs to go to DC meters, not supplied.  Leads on metering outputs are 12" or more long.  Used, but in good condition. $30.00
1 Microwave Devices, Inc.  (Made by Bendix) 442A96 Directional Coupler/7 inch long line section with 3-1/8" EIA flanges at each end.  Labeled 8 KW forward and 2 KW reflected.  Has sockets for 1N21B or similar cartridge microwave diodes.  The diodes and connectors are not included although they are available at a reasonable price from us.  RF samples are converted to DC samples with the diodes.  Typically used on Collins 830 and similar FM transmitters.  Good condition. $60.00
1 Microwave Devices, Inc.  (Made by Bendix) 442E4 Directional Coupler/7" long line section with 3-1/8" EIA flanges at each end.  Labeled 24 KW forward and 8 KW reflected.  Has sockets for 1N21B or similar cartridge microwave diodes. 
The diodes and connectors are not included although they are available at a reasonable price from us.  RF samples are converted to DC samples with the diodes.  Typically used on Collins 830 and similar FM transmitters.  Good condition.
$60.00
1 Microwave Devices/Bendix 573.35 through-line RF sample for 400 Watts VHF with 1N21 diode.  Has two N connectors and DC metering output.  Used, but in good condition. $30.00
. Quantity
Available

Delta AM Ammeters

Price
 Each

1 Delta TCA-10-EXM4 meter movement for use as an external meter to a TCA-10-EXR antenna ammeter.  Has a mirrored scale for better accuracy.  This meter is one of the original meter types that is no longer available today.  4" wide meter scale, 100 u.a. meter movement.  Outside dimensions are 5" wide x 4-3/16" high.  Requires a round hole in a panel or box to be 2-3/4" diameter.     Used, but in excellent operating condition and very good physical appearance.  $200.00
. Quantity
Available

AM Thermocouple RF Ammeters

Price
 Each

1 0-20 Ampere Weston 308 RF Ammeter for AM.  Expanded scale to easily read 5 to 17.5 Amperes.  Measures 3" square and mounts in a 2-13/16" diameter hole.   Working and in good condition. $220.00
. Quantity
Available

Miscellaneous

Price
 Each

1 Gates M-6112 Remote Antenna Current Sensing Unit with RF Remote Pickup Loop.  Used to provide about 5 VDC for remote metering of AM RF current.  Typically installed near an RF ammeter in an AM antenna coupling network or near a common point ammeter in a phasor system.  Complete with sample loop and instruction manual.  Used, but in good operating condition.  $80.00
1 Kintronic Labs RM-1A Remote Antenna Current Sensing Unit with RM-12TL 12-turn RF Remote Pickup Loop.  Used to provide about 5 VDC for remote metering of AM RF current.  Typically installed near an RF ammeter in an AM antenna coupling network or near a common point ammeter in a phasor system.  Complete with sample loop and instruction manual.  Used, but in good operating condition.  $150.00
1 Moseley RFK-1 RF Voltage Sampling Kit.  Used to provide about 5 VDC for remote metering of AM RF voltage/current.  Typically installed near an RF ammeter in an AM antenna coupling network or near a common point ammeter in a phasor system.  This is improved over the original design.  Complete with instruction manual.  Used, but in good operating condition.  $50.00
1 Green fiberglass mount for a meter.  4-3/4" x 4-3/4".  Has 2-3/4" diameter meter hole.  The one on the right in the photo. $10.00
1 Black insulating mount for a meter.  Typically found in RCA transmitters.  5" wide x 4-3/16".  Has 3-13/16" diameter meter hole.  The one on the left in the photo. $10.00

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page last edited 10/13/2014