Field Marshall UHF for use with GPS



Add the long range direction finding to your Marshall GPS Kit

Building on the success of the original Field Marshall UHF design, the next generation still retains the features customers loved on the first UHF receiver such as the tiny yagi antenna, compact and portable form factor, and superior range over VHF based receivers. But the 2015 model offers several additional improvements such as temperature compensation (no need to retune when chasing a far off signal as the temperature changes), improved pin point accuracy for searches up to the last few feet, and even better sound quality. It also has a new distinctive color scheme, which identifies our UHF equipment line going forward.

Each receiver still comes with a field holster, but it's very small shape and size makes it a "pocket receiver" capable of being slipped into your Hawking bag or section of your Pineo Hawking Vest.

FM UHF 100: $695 (434 MHz)
FM UHF 500: $895 (Frequencies 434 or 433MHz)


Since this receiver doesn't rely on crystals to determine the frequencies it can cover, we're were able to give it much more capacity. An all-digital circuit allows the same receiver to pick many frequencies in the 433 or 434 MHz bands. 

Coverage is continuous from .000-499 on either 434 or 433 MHz, allowing many transmitter combinations.

A broadened, smoothed tuning mechanism means that tuning into the signal is a pleasure and much faster than before.

Tuning with the new tune knob is broad and is protected from accidental contact so it's not easily bumped off your tune setting when getting in and out of the vehicle.

Higher Sensitivity: With the new digital receiver board inside the Field Marshall, we've improved sensitivity by another 3dB,

The actual sound of the receiver has been improved through the elimination of harsh harmonics and distortion, making it easier to track weak signals and far more pleasant to listen to.

Three red LEDs illuminate the entire control panel for better clarity in the dark without compromising your night vision.

We have taken the quick release handle to new hights with our new ergonomic handle design.  Now even more comforatable and easy to grasp.

As great as it is to have a handle on long walks or when holding the receiver out the window, there's times when it's better without it. Greater portability and reduced size is achieved without the handle on a third axis.

So, how to have it both ways?

Answer: The Quick-release handle. Now, you can choose when to use it and when to put it away in another pocket. Even though it's tight and secure with its bracket mount, it takes only seconds to remove it using the thumb wheel screw-on design.

Those who've now used it, love it.

Hold the receiver down waist high and you have two speakers facing up at you. Hold it up high for better reception and you still have a speaker facing down at you. By incorporating three speakers, the sound on the 2007 Field Marshall has been increased in volume.

And yet it's also quiet where it needs to be: A new narrow-band filtering system is employed rejects noise better without reducing your signal, so you hear the signal more clearly with less distracting background noise, even for the weakest signals.

More importantly, it has improved the sound's omni-directionality which means the volume doesn't change as you rotate the receiver, a definite problem in other receivers that leads to erroneous perception of the signal strength in certain directions.

Nearby transmitters on other channels sometimes cause interference to your reception, but this receiver has special circuits to minimize the effect.

The improved rejection of noise near power lines means you can hear weak signals better and increase your range.

Better Range Estimation: The range settings (Medium and Near) have been adjusted so that you know it's time to start walking. You can therefore switch between these in most situations to get a better idea of how far from you the bird or dog really is.

Electronics are housed in a robust case machined from a solid block of aircraft aluminum.

Purposely made for heavy use outdoors, this tracking receiver is designed to give you more years of trouble free operation through the widest range of temperatures, travel and weather than any other. Sealed connectors, mylar speakers, overlapping seams all make this receiver the most durable design now on the market.

In addition to all the performance improvements made to the FM1000, Marshall Radio engineers redesigned and shrunk receiver board to about 20% less total area, with everything fitting inside the case much more efficiently leaving and no wasted space. We then asked our external design team to "vacuum pack" the case down to the absolute minimum required, with no wasted airspace on the inside, no needless bulk on the outside. The result is a smaller overall receiver.

With the handle removed, the slimmed down design fits even better in your hand. Designing the outer case to be hand-held required we make additional changes, like a larger radius on all corners, and counter-sinking the earphone and power jacks to make them flush with the surface of the case, all of which just makes it feel more like an over-sized iPod in your hand.

Turns out the case is much more stout and rugged than even the previous generation Marshall receivers.

It's also designed to use six AAA batteries, cheaper to replace, and easier to change.

We kept the same, field proven, collapsible, three-element directional antenna design for maximum directionality. It's a full gain yagi when deployed, but now it collapses to an even smaller size. We reduced the size of the brackets, the sliding booms and eliminated the need for cables, cable savers and big springs found on the previous generations. Also rugged solid rods are now used for the elements instead of hollow tubes.  The latest Marshall UHF yagi antenna also elinates the moving connection found on most yagi antennas available, using our new fixed "Beta Match" bracket system, our engineers were able to significantly reduce the height of the new antenna as well as simplify its operation with few moving parts.

Improving the shielding on the case also means an improvement in how the antenna works for you. It's simple now to track up to within inches of a transmitter lost in the grass with the same pin-point directionality you get at a distance. The full-size three element yagi gives the best range and directionality of any antenna, and reduces the "back lobe" which sometimes fools people into tracking 180 degrees backward, in the wrong direction.

Using newest generation electronic components and creative packaging allows us to fit a lot into a small space.

And, our committment to using aluminum alloys which have the maximum strength to weight ratios makes this receiver as light and strong as technically possible.

A key mechanical design breakthrough of all Marshall receivers is the collapsible yagi antenna. The full-sized three element antenna (shown above right) can be reduced in size by half when fully closed.

When collapsed down into its stowaway position, and put into its hoslter (included with every new receiver), the new Field Marshall makes a small and compact piece of equipment to take with you into the field.

Q & A

What are the advantages of the different frequency bands?

This is a topic of much debate among telemetry users. First and foremost, frequency bands should be selected based on what frequencies are legal for use in your country. In some countries, multiple bands are available for radio telemetry use. In those areas, the user may select the band that offers the best combination of performance, antenna size, and range. Generally speaking, a lower frequency offers better signal propagation (longer range) and better diffraction over hills and obstacles, while higher frequencies allow for smaller aerials and antennas (nice when hiking through dense woods or operating from within a vehicle). The small differences in frequency within a band have little effect on performance,  i.e. 216.005 will perform the same as 216.795.  In some areas, one band may be contain more background noise than another band. Bands with the least background noise provide the best range.

What batteries are best to use?

For general use, Alkaline AAA batteries are the most cost effective and provide good battery life. They are commonly available as well. Lithium AAA batteries offer the best performance in cold weather, are the lightest, and last the longest (but cost significantly more). Rechargeable batteries (such as NiCad or NiMH) should not be used as they do not provide sufficient and consistent voltage to operate the receiver effectively.

Always use name brand batteries (like Energizer or Duracell) with a comprehensive warranty, in case there is ever an accident with the actual batteries inside your receiver.

Can the frequency range of my Field Marshall be reprogrammed be changed?

A lower capacity Field Marshall can be upgraded to include more channels (for example a Field Marshall 100 can be upgraded to a 800, 1000, or 4000), but the band must reamain the same (i.e. a 216 MHz cannot be changed to a 173 MHz).

Can I hook it up to an cartop (Omni) antenna?

Yes, the Field Marshall easily excepts input from an external antenna, simply remove the coaxial cable from the receiver body, and plug in the coaxial cable from your external antenna. The Field Marshall uses a ‘SMB’ connector, most omni antennas use the larger ‘BNC’ connector. A simple adapter (included with the purchase of an omni from Marshall Radio) can be used to connect other manufacturers antennas to your Marshall Receiver.

Can this receiver pick up my existing transmitters?

Yes, as long as the frequency range of your transmitters lies within the coverage of your Field Marshall receiver.

We have a problem in our area in that people think you're carrying a gun.

The Field Marshall comes standard with a quick release handle. Removing the handle and grasping the receiver case directly helps prevent the receiver from being mistaken for a weapon. However, the sight of a stranger walking through a neighborhood or farmyard holding and sweeping a beeping device with antennas is sure to arouse concerns if you do not explain to spectators what you are doing.

I don't see any place on the website to order replacement parts.

A small packet of common parts, like an axtra cable, thumbscrews, etc are provided with your new receiver. Also, replacement parts are just a phone call away, and we'll send out what you need.

What are the regulations for using the 433/434MHz band in the United States and Canada?

The use of the 433 (or UHF) band in the USA & Canada requires the user to apply for a Ham Radio License (easily attainable by paying a small fee and passing a written test). Once done, the user is now a legal ‘station’ and is able to use the quiet UHF band and at much higher power levels. To legally use telemetry on this band, your transmitter must broadcast your station ID (Ham Radio Call Sign) once every ten minutes in Morse Code (a feature exclusive to Marshall transmitters). You simply provide us with your Call Sign and we'll include it in each of your UHF transmitters.

How do you handle repairs when the receiver is out of Warranty?

If you receiver requires repair outside of the warranty period, it can be returned to Marshall Radio (or through your local distributor) for repairs at reasonable cost to you. You will be notified with the results of our testing and evaluation as to your options and their costs.




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Price with discount $695.00
Sales price $695.00
Sales price without tax $695.00