Zaxcom TRXFB3 Transceiver
Zaxcom TRXFB3 Transceiver Card Slot
Zaxcom TRXFB3 Transceiver Side
Zaxcom TRXFB3 Transceiver Top
Zaxcom TRXFB3 Transceiver
Zaxcom TRXFB3 Transceiver Card Slot
Zaxcom TRXFB3 Transceiver Side
Zaxcom TRXFB3 Transceiver Top

Zaxcom TRXFB3 Transceiver


£2,130.25inc VAT

  • Digital Modulation – 100% digital modulation for superior audio quality
  • Encrypted Audio – keeps transmitted audio private
  • Internal Recording – records timecoded audio files
  • Timecode – built-in timecode reader and generator

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Zaxcom TRXFB3 Transceiver

The Zaxcom TRXFB3 Transceiver is a wide-band transmitter featuring the new Zaxcom High Density (ZHD) Modulation. It’s packed full of features we invented to make your life on set the best it can be – built-in recording with timecode, ZaxNet remote control – so there’s never a need to get near talent – and crystal clear 100% digital transmission that rivals a hard wire.

It’s a reincarnation of a feature we had to bring back by popular demand. This single body pack transmits audio via UHF and receives an IFB audio feed received over ZaxNet’s 2.4 GHz signal at the same time. It replaces the need for talent to wear both a wireless microphone pack and an IFB receiver.


  • Digital Modulation – 100% digital modulation for superior audio quality
  • Encrypted Audio – keeps transmitted audio private
  • Intermodulation Resistant – removes unwanted spurious emissions for a cleaner signal
  • Internal Backup Recording – capture quality back-up audio even in the most hostile RF environment
  • Internal Recording – records timecoded audio files
  • MARF – highly reliable lossless recording format
  • Neverclip – gives you an incredible dynamic range without clipping your audio
  • Timecode – built-in timecode reader and generator
  • Zaxnet – provides wireless timecode, ZaxNet audio and remote control between Zaxcom products
  • ZaxNet QC Audio – quality control confidence monitoring without returning to your cart
  • ZHD Modulation – a 50 KHz wide signal spaced as close as 100 KHz apart with outstanding transmission distance


There’s also a key at the top of the transceiver that’s user programmable. Currently it can be assigned as a push to mute or a push to talk key. If you’d like it to be something else, just call the factory and we can most likely program the key to meet your specific needs.

Frequency Range

The TRXFB3.5 covers blocks 20 through 23 (512-614MHz) and the TRXFB3.6 covers blocks 23 through 26 (596 – 698 MHz). It’s lightweight and durable, housed in a high strength, impact resistant nylon polymer casing. The FB3 has NeverClip™ for an incredible dynamic range and also utilizes Zaxcom’s battery saving feature PowerRoll™. PowerRoll™ automatically adjusts the transmitter output power based on the record status as sent via ZaxNet boosting the output power level up to 100 mW while rolling and powering down to 50 mW while on standby.

The FB3 works with ZaxNet, Zaxcom’s 2.4-GHz RF network that distributes remote control commands, timecode and IFB audio. With ZaxNet, one can remotely control transmitter settings such as gain, frequency channel selection, transport controls and output power levels. When paired with an IFB100/200 and Deva or Fusion the units can also replay audio via a timecode reference giving production sound mixers the ability to replay and remix audio, creating a virtual multi-track playback and re-record system.

The FB3 also sends a Quality Control audio signal over ZaxNet so when micing someone you don’t have to go to the cart to hear how it sounds. Now you can use an ERX to listen to the mic right on the spot.

ZHD transmission and spacing…

ZHD Modulation allows up to 10 channels of wireless to be operated in only 1 MHz of spectrum space. Channel spacing will vary based on the receiver you pair it with. The wireless signal is only 50 KHz wide and can be spaced as close as 100 KHz channel to channel allowing up to sixty channels of ZHD wireless in a single 6 MHz American television channel. The new modulation is ultra efficient resulting in incredible transmission range.

The ZHD transmitters are capable of running existing mono Zaxcom modulations maintaining compatibility with all currently produced Zaxcom receivers. ZHD modulation conforms to all currently proposed FCC regulations for spectrally efficient wireless transmission.

The FB3 paired with any Zaxcom wireless receivers in Mono or XR Modes can be spaced as close as 400 KHz channel to channel
The FB3 paired with any Zaxcom QRX235, QRX200 or QRX212 in ZHD 96 mode can used in dual mode and be spaced as close as 400 KHz channel to channel
The FB3 paired with any Zaxcom QRX235, QRX200 or QRX212 in ZHD 48 mode can used in single mode and be spaced as close as 200 KHz channel to channel (300 KHz recommended)

Zaxcom Digital Recording Wireless Transmitters are protected under patent #’s: 7,711,443, 7,929,902, 9,094,636 B1, 8,835,814 B2 & 8,842,854

Visit Zaxcom – Zaxcom

    • RF Modulation: Proprietary Digital Method
    • TRXLA3.5 RF Frequency Range: 512 – 614 MHz
    • TRXLA3.6 RF Frequency Range: 596 – 698 MHz
    • RF Frequency Step: 100 KHz
    • RF Bandwidth in ZHD 48 Mode: 50 KHz
    • RF Bandwidth in ZHD 96 Mode: 100 KHz
    • RF Bandwidth in XR Mode: 200 KHz
    • Channel Separation in ZHD 48 Mode: as close as 100 KHz (receiver dependent)
    • Channel Separation in ZHD 96 Mode: as close as 200 KHz (receiver dependent)
    • Channel Separation in XR Mode: 400 KHz
    • Antenna Connector: 50 Ω SSMA Female
    • Emission Designator: 180 KV2E, 100 KV2E, 50 KV2E
    • FCC Part: 74.861


    • Dynamic Range: 126 dB (Stereo model 106 dB)
    • Distortion: 0.002%
    • Frequency Response: Mode 0: 20 Hz to 16 kHz / T & M Mode 0.2 Hz to 16 kHz
    • High Pass Filter: Off or 30 to 220 Hz, Steps: 10 (6 dB Per Octave)
    • Mic Power: 3.3 VDC
    • Mic Connector: 3-Pin Micro LEMO
    • Input Range: -60 to -30 dBu
    • Mic Impedance: 6.8 k Ω


    • Clock Accuracy: 1.54 PPM (1 Frame Out in 6 Hours)
    • Timecode Type: SMPTE
    • Timecode Frame-Rates: 23.98, 24, 25, 29.97NDF, 29.97DF, 30NDF, 30DF


    • Media: MicroSD Card (Flash Memory)
    • File Format: .ZAX
    • Recording Time: Up to 216 hours on a 16GB card (using XD or ZHD modulation)


    • RF Frequency Range: 2.403 to 2.475 GHz
    • RF Modulation: Digital Spread Spectrum
    • RF Frequency Step: 0.001 GHz (1 MHz)
    • RF Bandwidth: 1 MHz
    • Channel Separation: 2 MHz
    • Sensitivity: -96 dBm


    • System Group Delay: 10 ms
    • Dynamic Range: 96 dB
    • Distortion: 0.01%
    • Frequency Response: 60 Hz to 12 kHz
    • Output Connector: 1/8” Stereo (3.5 mm)
    • Compatible HP Impedance: 32 to 200 ohms


    • Weight: 3.7 oz without Battery
    • Dimensions (H x W x D): 3.5″ x 2.4″ x .65″
    • Display: Graphic OLED


    • Power Output: 25 / 50 / 100 mW – Software Selectable
    • Battery Life: Up to 7 Hours with 2 Lithium AA at 100mW

Zaxcom TRXFB3 Manual


All orders are delivered via next day tracked carrier. When placing an order please provide a suitable e-mail address and mobile number.

On despatch you will receive a notification from our carriers DPD along with updates right up to the point of delivery.

On the day of delivery you will get an accurate 1 hour time window for the items arrival.

You’ll even be able to contact your driver and track his progress!

Track your parcel here: DPD Tracking

Delivery Rates

We deliver Worldwide!
Can’t see your country in the list below? Don’t worry, let us know and we’ll add it!

Country Delivery Cost Ex vat
UK Mainland £6.66 – Next Day Courier
UK Mainland £2.46 – Royal Mail 2-3 Days
Austria £20
Belgium £15
Bosnia £65
Bulgaria £35
Croatia £30
Czech Republic £25
Denmark £20
Estonia £30
Finland £30
France £15
Germany £15
Greece £35
Hungary £30
Iceland £65
Italy £25
Jersey £25
Latvia £35
Lithuania £35
Luxembourg £15
Netherlands £15
Norway £65
Poland £30
Portugal £30
Republic of Ireland £25
Romania £35
Serbia £65
Slovakia £25
Slovenia £25
Spain £25
Sweden £65
Switzerland £50

Returns Policy:

Not happy with your purchase?
Don’t worry, you can return goods ordered from us at any time within 14 working days of receipt for a full refund or for an exchange for a different product. Before returning any items, notify us so we know what to expect.
All we ask is that you return the items to us in the same condition that we supplied them to you. Please package the items up securely and safely so that they are not damaged during transit. Uuse the original delivery packaging where possible.

We strongly recommend using a recorded or tracked delivery service. Please send the return items to:
Returns, Raycom Ltd, Unit 8 Abbey Court Lane, Abbey Lane, Evesham, WR11 4BY

Returns Terms & Conditions:

Returns of an order for a refund or an exchange:

  • Cost of return – The costs of returning goods to Raycom shall be borne by you, the customer, in all circumstances without exception, unless otherwise agreed upon with Raycom.
  • Loss & damage – Return items must be packed suitably and insured against the event of loss in transit. Raycom Ltd will not be responsible for lost or damaged returned goods. Lost or damaged goods may effect the level of refund on equipment.
  • Delivery costs – The original postage and packaging costs will not be refunded under any circumstances unless agreed with Raycom Ltd
  • Upon receipt of the goods, to Raycom Ltd, and with prior arrangement, we will give you a full refund of the amount paid or an exchange credit as required and agreed

The right to return goods to us will not apply in the following circumstances:

  • in the event that the product has been used, in any way, shape or form, other than limited useage when the goods are unpacked
  • in the case of software, audio or visual products, where the packaging has been unsealed, broken or is incomplete
  • to any products that we have made on special order and or customised specifically for you

The provisions of this clause do not affect your statutory rights. For more information, please see our Terms & Conditions, or should you have a question regarding this policy, please do get in touch.

Cancelling an order:

In accordance with the distance selling regulations, any order with us can be cancelled before we have dispatched your items. In this instance we will refund you in full using the chosen payment method. Terms for our cancellation and returns policy.

If you wish to cancel your order:

  • Notify us by email before we have dispatched the goods to you, or
  • where goods have already been dispatched to you, by returning goods to us in accordance with our returns policy