Marshall Radio Systems Comparison Chart

Product Specifications:

Field Marshall 1000
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Field Marshall 4000
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Number of Bands

Single Band

Choose One of the following: 216, 217,218,219

Four Bands

Choose One of the following: 216, 217,218 , 219

# Of Channels

1,000 1,000 per band

Number of Dogs Tracked (Simultaneously)

Up to 1,000 Dogs Up to 4,000 Dogs


 2 - 12 Miles*  2 - 12 Miles*

Attenuator Switch

Near  / Medium / Far
Near / Medium / Far

Dimensions of Receiver Case

6.9" x 2.8" x 1.3"

L x W x H

6.9" x 2.8" x 1.3"

L x W x H


Built In Built In

Package Contents

Field Marshall Receiver & Manual Field Marshall Receiver & Manual

Battery Type

6 AAA Alkaline or Lithium
6 AAA Alkaline or Lithium


2 years on mechanical  and moving parts, 5 years on all electronics 2 years on mechanical  and moving parts, 5 years on all electronics

Return Policy

14 Days 14 Days


Marshall Radio System Receives will work with most quality tracking collar brands

Marshall Radio System tracking equipment is made in the USA

Attenuator Switch - This switch is used to adjust the sensitivity of the unit and should be used when tracking dogs in a near or far setting.

Range - When manufacturers state the range of a dog tracking collar they are referring the the distance the collar can be detected over a flat and unobstructed terrain. These distances are quoted with under ideal circumstances; a clear line of sight and a fully charged transmitter. Range can be reduced with differences in terrain or a weak collar. However, all the dog tracking collars we carry are engineered to work in the toughest terrains without dramatically compromising or weakening the signal.

Radio Bands / Radio Frequencies - All Dog tracking collar systems operate on one or more different bands. Some models are capable of handling a single band while others are capable of tracking collars on multiple bands. The FCC has approved the following bands for North America - 216, 217, 218, 219, and 220 mhz. Each band is then divided into a thousand different frequencies from XXX.000 to XXX.999. If your dog tracking collar system is capable of tracking multiple collars on a single band (for example the 217 band) be sure you order collars with a large enough frequency gap to avoid overlapping. Depending on the receiver you choose you will be able to track from 1 to 1000 dogs.

Channels -  Channels refer to the number of tracking settings on a receiver.  The more channels the more dogs the unit can track .  Receivers with a set number of channels usually spread the bandwidth across the channels in increments of 10 kHz. .  Example: If a unit has 2 channels it means there are two settings on the receiver which can simultaneous track two dogs.