RangeMaster 1 W Professional Grade FM Transmitter Adjustable from 0.1 W

Starting at: $199.95

The RangeMaster 1 W FM Transmitter with Adjustable Mode Wattage is perfect for broadcasting music, audio, or voice wirelessly through the FM radio band to any FM receivers in its path.  The RangeMaster is perfect for the control-freak!  Not only does this FM Transmitter effortlessly accomplish your mission of an affordable, short-range, whole house stereo music transmitter...the RangeMaster takes control to a whole new level by giving you the ability to effortlessly toggle the ouput power from a robust 1 Watt all the way down to 0.1 W!!!  Every application for FM Transmission is different--there is no such thing as a one size fits all transmitter...until now!  The RangeMaster's adjustability can be deemed as nothing less than absolute brilliance! Like its big brother the 20 W RangeStud and its little brother the 500 mW RangeStar, the RangeMaster FM Transmitter is powerpacked with components that absolutely dominate anything in its class! The RangeMaster broadcasts in either stereo or monaural (MONO) to any style of FM receiver rather than having to be faced with this FM transmitter's alternatives--the tedious and expensive task of not only having to run speaker cable throughout your home or business but to also have to cut holes, or having to employ Wi-Fi based broadcasting models requiring expensive WiFi receivers, headsets, and controls. The difference is that the RangeMaster allows you to dictate precisely how far your signal can go with just a couple turns of the control dial! The RangeMaster not only touts that it has adjustable modulation output levels, it BACKS UP THE CLAIM!!! Couple the RangeMaster 1 Watt Adjustable FM Transmitter and PLL technology with Economy Upgrade, RangeBooster Quarter Wave 1.0, RangeBooster Professional Grade Quarter Wave 2.0, or RangeMax Professional Grade 5/8 Wave Antenna to extend your RangeMaster's range and clarity.  This transmitter has had DAGCO customers report broadcast ranges of up to 3 miles with our deep discount 1 Watt Bundle Deals! This transmitter is perfect for amateurs and professionals alike!!! Whatever you deem yourself, true wireless music dominance cannot be attained without the RangeMaster FM Transmitter! Assembly is so easy that even children can accomplish the task. Within 5 minutes of setup you could have your MP3 collection, your satellite music, Christmas music synchronized to Christmas lights, reaching everywhere in your house, everywhere on your property, and even to the cars on the road.  Weighing in at 1 lb. 4 ounces (569 grams), measuring in at 4 3/4" x 6 1/4" x 2 1/4" (122mm x 140mm x 54mm),and with up to 1.5 W of output power (with upgraded power supply), So what are the uses of the RangeMaster 1 W FM Transmitter?

Open-air broadcasting/communication: Car Shows, Fairs, Carnivals, Firework Shows, Concerts, Outdoor Events (Fishing, Marathons, Walkathons, Motorsports)

Portable broadcasting: Sporting Events, Weddings, Music DJs

Drive-by Broadcasting: Christmas Displays, Mobile Billboards, Home/Real Estate Sales, Scenic/Historical Informative Tours

Permanent broadcasting: Churches (Hearing Disabled/Multi-Bilingual Communication, Remote Listening Solutions), Homes (broadcast your music throughout your whole house/whole yard--for real!), Businesses/Schools (communicate across long ranges, communicate/market to your customers in the parking lot)

* Transmit range can be greatly affected by Antenna Tuning and Environmental Factors.


DAGCO's RangeStar is backed by a 10 day no hassle money back guarantee, 30 day upgrade policy, and 90 day exchange policy.


1-RangeMaster 1.0 W Adjustable to 0.1 W FM Transmitter

1-12V 2 A Power Supply with USA-style Outlet Power Cable

1-7 1/2" Rubber Ducky Whip Antenna (Tuned to 98.00 MHz)

1-Instruction Manual 


Power Output:0 to 1,000 mW ±10%

FM Transmitter Frequencies:

Tuning Step:


76.0 - 108.0 MHz

±100 KHz (0.1 MHz)

76.0, 76.1...98.0...98.1...107.9, 108.0

Maximum Deviation

±75 KHz

Operation Time:True 24 / 7 / 365
Stability of Frequency:±0ppm (-10℃~+50℃) Stable PLL Technology

Frequency Response:


50 - 15,000 Hz

Default 50µs (Optional 75 µs)

Audio Input Level:-15 dBV (Max -30 dBV)
MIC Input Level-15 dBV (Max -45dBV)
Stereo Separation:<30 dB S/N: >50 dB
Parasitic AM:<0.2%

Antenna Connector:

SMA type
Output Impedance:50 ohm
Audio Input Connector:3.5mm headphone connector
Mic Input Connector:3.5mm headphone connector
Tuning Design:Stable PLL Technology
Size of Transmitter Unit:L:140mm, W:122mm, H:54mm (6 1/4" x 4 3/4" x 2 1/4")
Weight of Transmitter Unit:569 grams (1 lb 4 oz)
Transmission Signal:FM Stereo or FM MONO (User Adjustable)

Need the RangeMaster Instruction Manual?  Click here to Browse.


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  • Model: SDA-01A

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This product was added to our catalog on Friday 08 October, 2010.

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